SECURITIES AND EXCHANGE COMMISSION
WASHINGTON, D.C. 20549

FORM N-1A

REGISTRATION STATEMENT (NO. 33-64845) UNDER
THE SECURITIES ACT OF 1933

POST-EFFECTIVE AMENDMENT NO. 36

AND

REGISTRATION STATEMENT UNDER THE INVESTMENT COMPANY
ACT OF 1940

AMENDMENT NO. 38

VANGUARD WHITEHALL FUNDS
(EXACT NAME OF REGISTRANT AS SPECIFIED IN DECLARATION OF TRUST

P.O. BOX 2600, VALLEY FORGE, PA 19482
(ADDRESS OF PRINCIPAL EXECUTIVE OFFICE)

REGISTRANT'S TELEPHONE NUMBER (610) 669-1000

HEIDI STAM, ESQUIRE
P.O. BOX 876
VALLEY FORGE, PA 19482

IT IS PROPOSED THAT THIS FILING BECOME EFFECTIVE:
ON FEBRUARY 22, 2008, PURSUANT TO PARAGRAPH (B) OF RULE 485.




VANGUARD/(R)/ SELECTED VALUE FUND

> PROSPECTUS

INVESTOR SHARES

February 22, 2008


[SHIP LOGO][VANGUARD/(R)/ LOGO]


This prospectus contains financial data for the Fund through the fiscal year ended October 31, 2007.

NEITHER THE SECURITIES AND EXCHANGE COMMISSION NOR ANY STATE SECURITIES COMMISSION HAS APPROVED OR DISAPPROVED OF THESE SECURITIES OR PASSED UPON THE ACCURACY OR ADEQUACY OF THIS PROSPECTUS. ANY REPRESENTATION TO THE CONTRARY IS A CRIMINAL OFFENSE.


CONTENTS

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Fund Profile 1 Investing With Vanguard 20
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More on the Fund 5 Purchasing Shares 20
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 The Fund and Vanguard 11 Redeeming Shares 23
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 Investment Advisors 12 Exchanging Shares 27
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 Dividends, Capital Gains, and 14 Frequent-Trading Limits 27
 Taxes
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 Share Price 17 Other Rules You Should Know 29
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Financial Highlights 18 Fund and Account Updates 33
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 Contacting Vanguard 35
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 Glossary of Investment Terms 37
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WHY READING THIS PROSPECTUS IS IMPORTANT
This prospectus explains the investment objective, policies, strategies, and risks associated with the Fund. To highlight terms and concepts important to mutual fund investors, we have provided Plain Talk/(R)/ explanations along the way. Reading the prospectus will help you decide whether the Fund is the right investment for you. We suggest that you keep this prospectus for future reference.


FUND PROFILE

INVESTMENT OBJECTIVE
The Fund seeks to provide long-term capital appreciation and income.

PRIMARY INVESTMENT STRATEGIES

The Fund invests mainly in the stocks of medium-size U.S. companies, choosing stocks considered by an advisor to be undervalued. Undervalued stocks are generally those that are out of favor with investors and are trading at prices that the advisor believes are below-average in relation to such measures as earnings and book value. These stocks often have above-average dividend yields. The Fund uses multiple investment advisors.

PRIMARY RISKS
An investment in the Fund could lose money over short or even long periods. You should expect the Fund's share price and total return to fluctuate within a wide range, like the fluctuations of the overall stock market. The Fund's performance could be hurt by:

. Stock market risk, which is the chance that stock prices overall will decline. Stock markets tend to move in cycles, with periods of rising prices and periods of falling prices.

. Investment style risk, which is the chance that returns from mid-capitalization value stocks will trail returns from the overall stock market. Historically, mid-cap stocks have been more volatile in price than the large-cap stocks that dominate the overall market, and they often perform quite differently.

. Manager risk, which is the chance that poor security selection will cause the Fund to underperform relevant benchmarks or other funds with a similar investment objective.

. Asset concentration risk, which is the chance that the Fund's performance may be hurt disproportionately by the poor performance of relatively few stocks.

PERFORMANCE/RISK INFORMATION
The following bar chart and table are intended to help you understand the risks of investing in the Fund. The bar chart shows how the performance of the Fund has varied from one calendar year to another over the periods shown. The table shows how the average annual total returns compare with those of a relevant market index. Keep in mind that the Fund's past performance (before and after taxes) does not indicate how the Fund will perform in the future.

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ANNUAL TOTAL RETURNS

BAR CHART
[-30% to 45%]

 1998 -11.77%
 1999 -2.72%
 2000 17.45%
 2001 14.99%
 2002 -9.79%
 2003 35.21%
 2004 20.38%
 2005 10.67%
 2006 19.11%
 2007 -0.23%
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During the periods shown in the bar chart, the highest return for a calendar quarter was 19.05% (quarter ended June 30, 2003), and the lowest return for a quarter was -27.23% (quarter ended September 30, 1998).

AVERAGE ANNUAL TOTAL RETURNS FOR PERIODS ENDED DECEMBER 31, 2007
 1 Year 5 Years 10 Years
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VANGUARD SELECTED VALUE FUND

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Return Before Taxes -0.23% 16.44% 8.39%
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Return After Taxes on Distributions -1.85 15.46 7.52
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Return After Taxes on Distributions and Sale of 1.43 14.30 7.03
Fund Shares
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RUSSELL MIDCAP VALUE INDEX
(reflects no deduction for fees, expenses,
or taxes) -1.42% 17.92% 10.18%
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NOTE ON AFTER-TAX RETURNS. Actual after-tax returns depend on your tax situation and may differ from those shown in the preceding table. When after-tax returns are calculated, it is assumed that the shareholder was in the highest federal marginal income tax bracket at the time of each distribution of income or capital gains or upon redemption. State and local income taxes are not reflected in the calculations. Please note that after-tax returns are not relevant for a shareholder who holds fund shares in a tax-deferred account, such as an individual retirement account or a 401(k) plan. Also, figures captioned Return After Taxes on Distributions and Sale of Fund Shares will be higher than other figures for the same period if a capital loss occurs upon redemption and results in an assumed tax deduction for the shareholder.

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FEES AND EXPENSES

The following table describes the fees and expenses you may pay if you buy and hold shares of the Fund. As is the case with all mutual funds, transaction costs incurred by the Fund for buying and selling securities are not reflected in the table. However, these costs are reflected in the investment performance figures included in this prospectus. The expenses shown under Annual Fund Operating Expenses are based on those incurred in the fiscal year ended October 31, 2007.

SHAREHOLDER FEES
(Fees paid directly from your investment)

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Sales Charge (Load) Imposed on Purchases None
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Purchase Fee None
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Sales Charge (Load) Imposed on Reinvested Dividends None
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Redemption Fee 1%/1/
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Account Service Fee (for fund account balances below $10,000) $20/Year/2/
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ANNUAL FUND OPERATING EXPENSES
(Expenses deducted from the Fund's assets)

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Management Expenses 0.40%
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12b-1 Distribution Fee None
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Other Expenses 0.02%
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Total Annual Fund Operating Expenses 0.42%
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1 The 1% fee applies to shares redeemed within one year of purchase by selling or by exchanging to another fund, or if your shares are redeemed because your Fund account balance falls below the minimum initial investment for any reason, including market fluctuation. The fee is withheld from redemption proceeds and retained by the Fund. Shares held for one year or more are not subject to the 1% fee.
2 If applicable, the account service fee will be collected by redeeming fund shares in the amount of $20.

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The following example is intended to help you compare the cost of investing in the Fund with the cost of investing in other mutual funds. It illustrates the hypothetical expenses that you would incur over various periods if you invest $10,000 in the Fund's shares. This example assumes that the Fund provides a return of 5% a year and that operating expenses remain the same. The results apply whether or not you redeem your investment at the end of the given period.

1 Year 3 Years 5 Years 10 Years
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$43 $135 $235 $530
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THIS EXAMPLE SHOULD NOT BE CONSIDERED TO REPRESENT ACTUAL EXPENSES OR PERFORMANCE FROM THE PAST OR FOR THE FUTURE. ACTUAL FUTURE EXPENSES MAY BE HIGHER OR LOWER THAN THOSE SHOWN.


PLAIN TALK ABOUT FUND EXPENSES

All mutual funds have operating expenses. These expenses, which are deducted from a fund's gross income, are expressed as a percentage of the net assets of the fund. Vanguard Selected Value Fund's expense ratio in fiscal year 2007 was 0.42%, or $4.20 per $1,000 of average net assets. The average mid-cap value fund had expenses in 2006 of 1.45%, or $14.50 per $1,000 of average net assets (derived from data provided by Lipper Inc., which reports on the mutual fund industry). Management expenses, which are one part of operating expenses, include investment advisory fees as well as other costs of managing a fund--such as account maintenance, reporting, accounting, legal, and other administrative expenses.


PLAIN TALK ABOUT COSTS OF INVESTING

Costs are an important consideration in choosing a mutual fund. That's because you, as a shareholder, pay the costs of operating a fund, plus any transaction costs incurred when the fund buys or sells securities. These costs can erode a substantial portion of the gross income or the capital appreciation a fund achieves. Even seemingly small differences in expenses can, over time, have a dramatic effect on a fund's performance.

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Additional Information
As of October 31, 2007
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Net Assets $5 billion
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Investment Advisors .Barrow, Hanley, Mewhinney & Strauss, Inc., Dallas, Tex.,
 since inception

 . Donald Smith & Co., Inc., New York, N.Y., since 2005
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Dividends and Capital Gains Distributed annually in December
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Suitable for IRAs Yes
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Inception Date February 15, 1996
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Minimum Initial Investment $25,000
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Newspaper Abbreviation SelValu
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Vanguard Fund Number 934
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CUSIP Number 921946109
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Ticker Symbol VASVX
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MORE ON THE FUND

This prospectus describes the primary risks you would face as a Fund shareholder. It is important to keep in mind one of the main axioms of investing: The higher the risk of losing money, the higher the potential reward. The reverse, also, is generally true: The lower the risk, the lower the potential reward. As you consider an investment in any mutual fund, you should take into account your personal tolerance for fluctuations in the securities markets. Look for this FLAG LOGO symbol throughout the prospectus. It is used to mark detailed information about the more significant risks that you would confront as a Fund shareholder.

The following sections explain the primary investment strategies and policies that the Fund uses in pursuit of its objective. The Fund's board of trustees, which oversees the Fund's management, may change investment strategies or policies in the interest of shareholders without a shareholder vote, unless those strategies or policies are designated as fundamental.

MARKET EXPOSURE
The Fund invests mainly in common stocks of mid-cap companies that are considered to have low prices in relation to their corporate earnings and book value. These stocks often have above-average dividend yields.

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FLAG LOGO
THE FUND IS SUBJECT TO STOCK MARKET RISK, WHICH IS THE CHANCE THAT STOCK PRICES OVERALL WILL DECLINE. STOCK MARKETS TEND TO MOVE IN CYCLES, WITH PERIODS OF RISING PRICES AND PERIODS OF FALLING PRICES.

To illustrate the volatility of stock prices, the following table shows the best, worst, and average annual total returns for the U.S. stock market over various periods as measured by the Standard & Poor's 500 Index, a widely used barometer of market activity. (Total returns consist of dividend income plus change in market price.) Note that the returns shown do not include the costs of buying and selling stocks or other expenses that a real-world investment portfolio would incur.

U.S. STOCK MARKET RETURNS
(1926-2007)

 1 Year 5 Years 10 Years 20 Years
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Best 54.2% 28.6% 19.9% 17.8%
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Worst -43.1 -12.4 -0.8 3.1
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Average 12.2 10.4 11.1 11.4
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The table covers all of the 1-, 5-, 10-, and 20-year periods from 1926 through 2007. You can see, for example, that although the average return on common stocks for all of the 5-year periods was 10.4%, average returns for individual 5-year periods ranged from -12.4% (from 1928 through 1932) to 28.6% (from 1995 through 1999). These average returns reflect past performance of common stocks; you should not regard them as an indication of future performance of either the stock market as a whole or the Fund in particular.

Stocks of publicly traded companies and funds that invest in stocks are often classified according to market value, or market capitalization. These classifications typically include small-cap, mid-cap, and large-cap. It's important to understand that, for both companies and stock funds, market-capitalization ranges change over time. Also, interpretations of size vary, and there are no "official" definitions of small-, mid-, and large-cap, even among Vanguard fund advisors. The asset-weighted median market capitalization of the Fund as of October 31, 2007, was $6.1 billion.

FLAG LOGO
THE FUND IS SUBJECT TO INVESTMENT STYLE RISK, WHICH IS THE CHANCE THAT RETURNS FROM MID-CAPITALIZATION VALUE STOCKS WILL TRAIL RETURNS FROM THE OVERALL STOCK MARKET. HISTORICALLY, MID-CAP STOCKS HAVE BEEN MORE VOLATILE IN PRICE THAN THE LARGE-CAP STOCKS THAT DOMINATE THE OVERALL MARKET, AND THEY OFTEN PERFORM QUITE DIFFERENTLY.

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PLAIN TALK ABOUT GROWTH FUNDS AND VALUE FUNDS

Growth investing and value investing are two styles employed by stock-fund managers. Growth funds generally focus on stocks of companies believed to have above-average potential for growth in revenue, earnings, cash flow, or other similar criteria. These stocks typically have low dividend yields and above-average prices in relation to such measures as earnings and book value. Value funds typically emphasize stocks whose prices are below average in relation to those measures; these stocks often have above-average dividend yields. Growth and value stocks have historically produced similar long-term returns, though each category has periods when it outperforms the other.

SECURITY SELECTION
The Fund uses multiple investment advisors. Each advisor independently selects and maintains a portfolio of common stocks for the Fund.

These advisors employ active investment management methods, which means that securities are bought and sold according to the advisors' evaluations of companies and their financial prospects, the prices of the securities, and the stock market and the economy in general. Each advisor will sell a security when it is no longer as attractive as an alternative investment.

Each advisor uses a different process to select securities for its portion of the Fund's assets.

Barrow, Hanley, Mewhinney & Strauss, Inc. (Barrow, Hanley), which manages approximately 76% of the Fund's assets, seeks out medium-size companies that it considers to be undervalued, choosing them on the basis of extensive research and discussions with company management. According to Barrow, Hanley, a company is undervalued if its earnings potential is not reflected in its share price. Barrow, Hanley looks for individual stocks that reflect these value characteristics: price/earnings and price/book value ratios below those of the market, as well as dividend yields above those of the market. Barrow, Hanley holds an undervalued stock until the advisor believes the stock's price reflects the company's underlying value.

Donald Smith & Co., Inc. (Donald Smith & Co.), which manages approximately 22% of the Fund's assets, employs a strictly bottom-up investment approach that seeks out stocks of out-of-favor companies selling at discounts to tangible book value. Donald Smith & Co. looks for companies in the bottom decile of price-to-tangible-book value ratios that have positive outlooks for earnings potential over the next two to four years. Donald Smith & Co. employs traditional fundamental research techniques with the objective of determining the extent of earnings a company's asset base can generate.

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The Vanguard Group (Vanguard) manages a small portion, approximately 2%, of the Fund's assets to facilitate cash flows to and from the Fund's advisors. Vanguard typically invests its portion of the Fund's assets in stock index futures and/or shares of exchange-traded funds (ETFs). For more details, see "Other Investment Policies and Risks."

FLAG LOGO
BECAUSE THE FUND TENDS TO INVEST A HIGH PERCENTAGE OF ASSETS IN ITS TEN LARGEST HOLDINGS, THE FUND IS SUBJECT TO ASSET CONCENTRATION RISK, WHICH IS THE CHANCE THAT THE FUND'S PERFORMANCE MAY BE HURT DISPROPORTIONATELY BY THE POOR

PERFORMANCE OF RELATIVELY FEW STOCKS.

The Fund is generally managed without regard to tax ramifications.

FLAG LOGO
THE FUND IS SUBJECT TO MANAGER RISK, WHICH IS THE CHANCE THAT POOR SECURITY SELECTION WILL CAUSE THE FUND TO UNDERPERFORM RELEVANT BENCHMARKS OR OTHER

FUNDS WITH A SIMILAR INVESTMENT OBJECTIVE.

OTHER INVESTMENT POLICIES AND RISKS
Besides investing in U.S. mid-cap value stocks, the Fund may make other kinds of investments to achieve its objective.

Although the Fund typically does not make significant investments in foreign securities, it reserves the right to invest up to 25% of its assets this way. To the extent that it owns foreign securities, the Fund is subject to country risk and currency risk. Country risk is the chance that world events--such as political upheaval, financial troubles, or natural disasters--will adversely affect the value of securities issued by companies in foreign countries. In addition, the prices of foreign stocks and the prices of U.S. stocks have, at times, moved in opposite directions. Currency risk is the chance that the value of a foreign investment, measured in U.S. dollars, will decrease because of unfavorable changes in currency exchange rates.

The Fund may invest, to a limited extent, in derivatives. Generally speaking, a derivative is a financial contract whose value is based on the value of a financial asset (such as a stock, bond, or currency), a physical asset (such as gold), or a market index (such as the S&P 500 Index). The Fund will not use derivatives for speculation or for the purpose of leveraging (magnifying) investment returns.

The Fund may enter into forward foreign currency exchange contracts, which are types of derivative contracts. A forward foreign currency exchange contract is an agreement to buy or sell a country's currency at a specific price on a specific date, usually 30, 60, or 90 days in the future. In other words, the contract guarantees an exchange rate on a given date. Managers of funds that invest in foreign securities can use these contracts to guard against sudden, unfavorable changes in the U.S. dollar/foreign currency

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exchange rates. These contracts, however, will not prevent the Fund's securities from falling in value during foreign market downswings.

Vanguard typically invests a small portion of the Fund's assets in stock index futures and/or shares of exchange-traded funds (ETFs), including ETF Shares issued by Vanguard stock index funds. Stock index futures and ETFs provide returns similar to those of common stocks. Vanguard may purchase futures or ETFs when doing so will reduce the Fund's transaction costs or add value because the instruments are favorably priced. Vanguard receives no additional revenue from investing Fund assets in ETF Shares of other Vanguard funds. Fund assets invested in ETF Shares are excluded when allocating to the Fund its share of the costs of Vanguard operations.

CASH MANAGEMENT

The Fund's daily cash balance may be invested in one or more Vanguard CMT Funds, which are very low-cost money market funds. When investing in a Vanguard CMT Fund, the Fund bears its proportionate share of the at-cost expenses of the CMT Fund in which it invests.

TEMPORARY INVESTMENT MEASURES

The Fund may temporarily depart from its normal investment policies and strategies when doing so is believed to be in the Fund's best interest, so long as the alternative is consistent with the Fund's investment objective. For instance, the Fund may invest beyond the normal limits in derivatives or ETFs that are consistent with the Fund's objective when those instruments are more favorably priced or provide needed liquidity, as might be the case when the Fund is transitioning assets from one advisor to another or receives large cash flows that it cannot prudently invest immediately.

In addition, the Fund may take temporary defensive positions that are inconsistent with its normal investment policies and strategies--for instance, by allocating substantial assets to cash, commercial paper, or other less volatile instruments--in response to adverse or unusual market, economic, political, or other conditions. In doing so, the Fund may succeed in avoiding losses but may otherwise fail to achieve its investment objective.

REDEMPTION AND ACCOUNT SERVICE FEES
The Fund charges a 1% fee on shares that are redeemed before they have been held for one year. The fee applies if your shares are redeemed by selling or by exchanging to another Vanguard fund, or if your shares are redeemed because your Fund account balance falls below the minimum initial investment for any reason, including market fluctuation.

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Unlike a sales charge or a load paid to a broker or a fund management company, the redemption fee is paid directly to the Fund to offset the costs of buying and selling securities. The fee is designed to ensure that short-term investors pay their share of the Fund's transaction costs and that long-term investors do not subsidize the activities of short-term traders.

An account service fee of $20 per year applies to certain fund accounts whose balances are less than $10,000.

See the FUND PROFILE and INVESTING WITH VANGUARD for more information about fees.

FREQUENT TRADING OR MARKET-TIMING
BACKGROUND. Some investors try to profit from strategies involving frequent trading of mutual fund shares, such as market-timing. For funds holding foreign securities, investors may try to take advantage of an anticipated difference between the price of the fund's shares and price movements in overseas markets, a practice also known as time-zone arbitrage. Investors also may try to engage in frequent trading of funds holding investments such as small-cap stocks and high-yield bonds. As money is shifted into and out of a fund by a shareholder engaging in frequent trading, a fund incurs costs for buying and selling securities, resulting in increased brokerage and administrative costs. These costs are borne by all fund shareholders, including the long-term investors who do not generate the costs. In addition, frequent trading may interfere with an advisor's ability to efficiently manage the fund.

POLICIES TO ADDRESS FREQUENT TRADING. The Vanguard funds (other than money market funds, short-term bond funds, and Vanguard ETF(TM) Shares) do not knowingly accommodate frequent trading. The board of trustees of each Vanguard fund has adopted policies and procedures reasonably designed to detect and discourage frequent trading and, in some cases, to compensate the fund for the costs associated with it. Although there is no assurance that Vanguard will be able to detect or prevent frequent trading or market-timing in all circumstances, the following policies have been adopted to address these issues:

. Each Vanguard fund reserves the right to reject any purchase request--including exchanges from other Vanguard funds--without notice and regardless of size. For example, a purchase request could be rejected if Vanguard determines that such purchase may negatively affect a fund's operation or performance or because of a history of frequent trading by the investor.

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. Each Vanguard fund (other than money market funds, short-term bond funds, and ETF Shares) generally prohibits, except as otherwise noted in the INVESTING WITH VANGUARD section, an investor's purchases or exchanges into a fund account for 60 calendar days after the investor has redeemed or exchanged out of that fund account.

. Certain Vanguard funds charge shareholders purchase and/or redemption fees on transactions.

See the INVESTING WITH VANGUARD section of this prospectus for further details on Vanguard's transaction policies.

Each fund (other than money market funds), in determining its net asset value, will, when appropriate, use fair-value pricing, as described in the SHARE PRICE section. Fair-value pricing may reduce or eliminate the profitability of certain frequent-trading strategies.

DO NOT INVEST WITH VANGUARD IF YOU ARE A MARKET-TIMER.

TURNOVER RATE

Although the Fund normally seeks to invest for the long term, it may sell securities regardless of how long they have been held. The Financial Highlights section of this prospectus shows historical turnover rates for the Fund. A turnover rate of 100%, for example, would mean that the Fund had sold and replaced securities valued at 100% of its net assets within a one-year period. The average turnover rate for mid-cap value funds was approximately 77%, as reported by Morningstar, Inc., on October 31, 2007.


PLAIN TALK ABOUT TURNOVER RATE

Before investing in a mutual fund, you should review its turnover rate. This gives an indication of how transaction costs, which are not included in the fund's expense ratio, could affect the fund's future returns. In general, the greater the volume of buying and selling by the fund, the greater the impact that brokerage commissions and other transaction costs will have on its return. Also, funds with high turnover rates may be more likely to generate capital gains that must be distributed to shareholders as taxable income.

THE FUND AND VANGUARD

The Fund is a member of The Vanguard Group, a family of 37 investment companies with more than 150 funds holding assets in excess of $1.2 trillion. All of the funds that are members of The Vanguard Group share in the expenses associated with administrative services and business operations, such as personnel, office space, equipment, and advertising.

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Vanguard also provides marketing services to the funds. Although shareholders do not pay sales commissions or 12b-1 distribution fees, each fund (or in the case of a fund with multiple share classes, each share class of the fund) pays its allocated share of The Vanguard Group's marketing costs.


PLAIN TALK ABOUT VANGUARD'S UNIQUE CORPORATE STRUCTURE

The Vanguard Group is truly a MUTUAL mutual fund company. It is owned jointly by the funds it oversees and thus indirectly by the shareholders in those funds. Most other mutual funds are operated by management companies that may be owned by one person, by a group of individuals, or by investors who own the management company's stock. The management fees charged by these companies include a profit component over and above the companies' cost of providing services. By contrast, Vanguard provides services to its member funds on an at-cost basis, with no profit component, which helps to keep the funds' expenses low.

INVESTMENT ADVISORS

The Fund uses a multimanager approach. Each advisor independently manages its assigned portion of the Fund's assets, subject to the supervision and oversight of Vanguard and the board of trustees. The Fund's board of trustees designates the proportion of the Fund assets to be managed by each advisor and may change these proportions at any time.

. Barrow, Hanley, Mewhinney & Strauss, Inc., 2200 Ross Avenue, 31st Floor, Dallas, TX 75201, is an investment advisory firm founded in 1979. Barrow, Hanley is a subsidiary of Old Mutual Asset Managers (US) LLC, which is a subsidiary of Old Mutual plc. As of October 31, 2007, the firm managed approximately $72 billion in assets.

. Donald Smith & Co., Inc., 152 West 57th Street, 22nd Floor, New York, NY 10019, is an investment advisory firm that was founded as Home Portfolio Advisors in 1975 and renamed Donald Smith & Co., Inc., in 1984. As of October 31, 2007, Donald Smith & Co. managed approximately $4.6 billion in assets.

Each advisor's fee is paid quarterly and is based on certain annual percentage rates applied to the average daily net assets managed by the advisor for each quarter. In addition, the quarterly fees paid to each advisor are increased or decreased based on the advisor's performance compared with that of a benchmark index. For these purposes, the cumulative total return of the Barrow, Hanley portion of the Fund over a trailing 36-month period is compared with that of the Russell Midcap Value Index over the same period, and the cumulative total return of the Donald Smith & Co. portion of

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the Fund over a trailing 60-month period is compared with that of the Morgan Stanley Capital International US Investable Market 2500 Index over the same period.

For the fiscal year ended October 31, 2007, the advisory fee represented an effective annual rate of 0.22% of the Fund's average net assets before a performance-based decrease of 0.02%.

Under the terms of an SEC exemption, the Fund's board of trustees may, without prior approval from shareholders, change the terms of an advisory agreement or hire a new investment advisor--either as a replacement for an existing advisor or as an additional advisor. Any significant change in the Fund's advisory arrangements will be communicated to shareholders in writing. In addition, as the Fund's sponsor and overall manager, The Vanguard Group may provide investment advisory services to the Fund, on an at-cost basis, at any time. Vanguard may also recommend to the board of trustees that an advisor be hired, terminated, or replaced, or that the terms of an existing advisory agreement be revised.

For a discussion of why the board of trustees approved the Fund's investment advisory agreements, see the most recent semiannual report to shareholders covering the fiscal period ended April 30.

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PLAIN TALK ABOUT THE FUND'S PORTFOLIO MANAGERS

The managers primarily responsible for the day-to-day management of the Fund are:

JAMES P. BARROW, Founding Partner of Barrow, Hanley. He has managed investment portfolios since 1963; has been with Barrow, Hanley since 1979; and has co-managed a portion of the Fund since 1999. Education: B.S., University of South Carolina.

MARK GIAMBRONE, Fund Manager at Barrow, Hanley. He has managed investment portfolios for Barrow, Hanley since 1998 and has co-managed a portion of the Fund since 2002. Education: B.S., Indiana University; M.B.A., University of Chicago.

DONALD G. SMITH, Chief Investment Officer of Donald Smith & Co. He has worked in investment management since 1968; has been with the investment advisory firm that was founded as Home Portfolio Advisors and renamed Donald Smith & Co., Inc., since 1980; and has co-managed a portion of the Fund since 2005. Education: B.S., University of Illinois; M.B.A., Harvard University; J.D.,
UCLA.

RICHARD L. GREENBERG, CFA, Senior Portfolio Manager of Donald Smith & Co. He has worked in investment management since 1981; has been with the investment advisory firm that was founded as Home Portfolio Advisors and renamed Donald Smith & Co., Inc., since 1981; and has co-managed a portion of the Fund with Mr. Smith since 2005. Education: B.S., SUNY Binghamton; M.B.A., University of Pennsylvania.

The Statement of Additional Information provides information about each portfolio manager's compensation, other accounts under management, and ownership of securities in the Fund.

DIVIDENDS, CAPITAL GAINS, AND TAXES

FUND DISTRIBUTIONS
The Fund distributes to shareholders virtually all of its net income (interest and dividends, less expenses) as well as any net capital gains realized from the sale of its holdings. Distributions generally occur annually in December. You can receive distributions of income or capital gains in cash, or you can have them automatically reinvested in more shares of the Fund.

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PLAIN TALK ABOUT DISTRIBUTIONS

As a shareholder, you are entitled to your portion of a fund's income from interest and dividends as well as gains from the sale of investments. Income consists of both the dividends that the fund earns from any stock holdings and the interest it receives from any money market and bond investments. Capital gains are realized whenever the fund sells securities for higher prices than it paid for them. These capital gains are either short-term or long-term, depending on whether the fund held the securities for one year or less or for more than one year. You receive the fund's earnings as either a dividend or capital gains distribution.

BASIC TAX POINTS
Vanguard will send you a statement each year showing the tax status of all your distributions. In addition, investors in taxable accounts should be aware of the following basic tax points:

. Distributions are taxable to you for federal income tax purposes, whether or not you reinvest these amounts in additional Fund shares.

. Distributions declared in December--if paid to you by the end of January--are taxable for federal income tax purposes as if received in December.

. Any dividend and short-term capital gains distributions that you receive are taxable to you as ordinary income for federal income tax purposes. If you are an individual and meet certain holding-period requirements with respect to your Fund shares, you may be eligible for reduced federal tax rates on "qualified dividend income," if any, distributed by the Fund.

. Any distributions of net long-term capital gains are taxable to you as long-term capital gains for federal income tax purposes, no matter how long you've owned shares in the Fund.

. Capital gains distributions may vary considerably from year to year as a result of the Fund's normal investment activities and cash flows.

. A sale or exchange of Fund shares is a taxable event. This means that you may have a capital gain to report as income, or a capital loss to report as a deduction, when you complete your federal income tax return.

. Dividend and capital gains distributions that you receive, as well as your gains or losses from any sale or exchange of Fund shares, may be subject to state and local income taxes.

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PLAIN TALK ABOUT "BUYING A DIVIDEND"

Unless you are investing through a tax-deferred retirement account (such as an IRA), you should consider avoiding a purchase of fund shares shortly before the fund makes a distribution, because doing so can cost you money in taxes. This is known as "buying a dividend." For example: On December 15, you invest $5,000, buying 250 shares for $20 each. If the fund pays a distribution of $1 per share on December 16, its share price will drop to $19 (not counting market change). You still have only $5,000 (250 shares x $19 = $4,750 in share value, plus 250 shares x $1 = $250 in distributions), but you owe tax on the $250 distribution you received--even if you reinvest it in more shares. To avoid "buying a dividend," check a fund's distribution schedule before you invest.

GENERAL INFORMATION
BACKUP WITHHOLDING. By law, Vanguard must withhold 28% of any taxable distributions or redemptions from your account if you do not:

. Provide us with your correct taxpayer identification number;

. Certify that the taxpayer identification number is correct; and

. Confirm that you are not subject to backup withholding.

Similarly, Vanguard must withhold taxes from your account if the IRS instructs us to do so.

FOREIGN INVESTORS. Vanguard funds generally are not sold outside the United States, except to certain qualified investors. If you reside outside the United States, please consult our website at www.vanguard.com and review "Non-U.S. investors." Foreign investors should be aware that U.S. withholding and estate taxes may apply to any investments in Vanguard funds.

INVALID ADDRESSES. If a dividend or capital gains distribution check mailed to your address of record is returned as undeliverable, Vanguard will automatically reinvest all future distributions until you provide us with a valid mailing address.

TAX CONSEQUENCES. This prospectus provides general tax information only. If you are investing through a tax-deferred retirement account, such as an IRA, special tax rules apply. Please consult your tax advisor for detailed information about a fund's tax consequences for you.

16

SHARE PRICE

The Fund's share price, called its net asset value, or NAV, is calculated each business day as of the close of regular trading on the New York Stock Exchange, generally 4 p.m., Eastern time. NAV per share is computed by dividing the net assets of the Fund by the number of Fund shares outstanding. On holidays or other days when the Exchange is closed, the NAV is not calculated, and the Fund does not transact purchase or redemption requests. However, on those days the value of the Fund's assets may be affected to the extent that the Fund holds foreign securities that trade on foreign markets that are open.

Stocks held by a Vanguard fund are valued at their market value when reliable market quotations are readily available. Certain short-term debt instruments used to manage a fund's cash are valued on the basis of amortized cost. The values of any foreign securities held by a fund are converted into U.S. dollars using an exchange rate obtained from an independent third party. The values of any mutual fund shares held by a fund are based on the NAVs of the shares. The values of any ETF or closed-end fund shares held by a fund are based on the market value of the shares.

When reliable market quotations are not readily available, securities are priced at their fair value (the amount that the owner might reasonably expect to receive upon the current sale of a security). A fund also will use fair-value pricing if the value of a security it holds has been materially affected by events occurring before the fund's pricing time but after the close of the primary markets or exchanges on which the security is traded. This most commonly occurs with foreign securities, which may trade on foreign exchanges that close many hours before the fund's pricing time. Intervening events might be company-specific (e.g., earnings report, merger announcement); country-specific (e.g., natural disaster, economic or political news, act of terrorism, interest rate change); or global. Intervening events include price movements in U.S. markets that are deemed to affect the value of foreign securities. Fair-value pricing may be used for domestic securities--for example, if (1) trading in a security is halted and does not resume before the fund's pricing time or if a security does not trade in the course of a day, and (2) the fund holds enough of the security that its price could affect the fund's NAV.

Fair-value prices are determined by Vanguard according to procedures adopted by the board of trustees. When fair-value pricing is employed, the prices of securities used by a fund to calculate its NAV may differ from quoted or published prices for the same securities.

Vanguard fund share prices can be found daily in the mutual fund listings of most major newspapers under various "Vanguard" headings.

17

FINANCIAL HIGHLIGHTS

The following financial highlights table is intended to help you understand the Fund's financial performance for the periods shown, and certain information reflects financial results for a single Fund share. The total returns in the table represent the rate that an investor would have earned or lost each period on an investment in the Fund (assuming reinvestment of all distributions). This information has been derived from the financial statements audited by PricewaterhouseCoopers LLP, an independent registered public accounting firm, whose report--along with the Fund's financial statements--is included in the Fund's most recent annual report to shareholders. To receive a free copy of the latest annual or semiannual report, you may access a report online at www.vanguard.com, or you may contact Vanguard by telephone or by mail.


PLAIN TALK ABOUT HOW TO READ THE FINANCIAL HIGHLIGHTS TABLE

The Fund began fiscal year 2007 with a net asset value (price) of $21.38 per share. During the year, the Fund earned $0.40 per share from investment income (interest and dividends) and $1.70 per share from investments that had appreciated in value or that were sold for higher prices than the Fund paid for them.

Shareholders received $1.37 per share in the form of dividend and capital gains distributions. A portion of each year's distributions may come from the prior year's income or capital gains.

The share price at the end of the year was $22.11, reflecting earnings of $2.10 per share and distributions of $1.37 per share. This was an increase of $0.73 per share (from $21.38 at the beginning of the year to $22.11 at the end of the year). For a shareholder who reinvested the distributions in the purchase of more shares, the total return was 10.15% for the year.

As of October 31, 2007, the Fund had approximately $5 billion in net assets. For the year, the expense ratio was 0.42% ($4.20 per $1,000 of net assets), and the net investment income amounted to 1.74% of its average net assets. The Fund sold and replaced securities valued at 33% of its net assets.

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SELECTED VALUE FUND
 Year Ended October 31,
 -------------------------------------------------------------------------------------
 2007 2006 2005 2004 2003
-----------------------------------------------------------------------------------------------------------------------------------
NET ASSET VALUE, BEGINNING OF PERIOD $21.38 $18.99 $16.76 $14.10 $11.27
-----------------------------------------------------------------------------------------------------------------------------------
INVESTMENT OPERATIONS
-----------------------------------------------------------------------------------------------------------------------------------
Net Investment Income .40 .35 .30 .26 .25
-----------------------------------------------------------------------------------------------------------------------------------
Net Realized and Unrealized Gain (Loss) 1.70 3.18 2.19 2.66 2.82
on Investments/1/
-----------------------------------------------------------------------------------------------------------------------------------
Total from Investment Operations 2.10 3.53 2.49 2.92 3.07
-----------------------------------------------------------------------------------------------------------------------------------
Distributions
-----------------------------------------------------------------------------------------------------------------------------------
Dividends from Net Investment Income (.32) (.29) (.26) (.26) (.24)
-----------------------------------------------------------------------------------------------------------------------------------
Distributions from Realized Capital Gains (1.05) (.85) -- -- --
-----------------------------------------------------------------------------------------------------------------------------------
Total Distributions (1.37) (1.14) (.26) (.26) (.24)
-----------------------------------------------------------------------------------------------------------------------------------
NET ASSET VALUE, END OF PERIOD $22.11 $21.38 $18.99 $16.76 $14.10
-----------------------------------------------------------------------------------------------------------------------------------
TOTAL RETURN/2/ 10.15% 19.38% 14.96% 20.94% 27.74%

-----------------------------------------------------------------------------------------------------------------------------------
RATIOS/SUPPLEMENTAL DATA
-----------------------------------------------------------------------------------------------------------------------------------
Net Assets, End of Period (Millions) $4,991 $4,326 $3,707 $1,925 $1,265
-----------------------------------------------------------------------------------------------------------------------------------
Ratio of Total Expenses to Average Net 0.42% 0.45% 0.51% 0.60% 0.78%
Assets/3/
-----------------------------------------------------------------------------------------------------------------------------------
Ratio of Net Investment Income to Average 1.74% 1.75% 1.81% 1.78% 2.05%
Net Assets
-----------------------------------------------------------------------------------------------------------------------------------
Turnover Rate 33% 37% 28% 35% 40%
-----------------------------------------------------------------------------------------------------------------------------------
1 Includes increases from redemption fees of $0.01, $0.01, $0.01, $0.01, and $0.01.
2 Total returns do not reflect the 1% fee assessed on redemptions after March 23, 2005, of shares held for less than one year, or
 the 1% fee assessed until March 23, 2005, on shares purchased on or after August 7, 2001, and held for less than five years; or
 the account service fee that may be applicable to certain accounts with balances below $10,000.
3 Includes performance-based investment advisory fee increases (decreases) of (0.02%), (0.05%), (0.02%), 0.01%,
 and 0.11%.

19

INVESTING WITH VANGUARD

This section of the prospectus explains the basics of doing business with Vanguard. Be sure to carefully read each topic that pertains to your relationship with Vanguard. Vanguard reserves the right to change the following policies, without prior notice to shareholders. Please call or check online for current information.

Each fund you hold in an account is a separate "fund account." For example, if you hold three funds in a nonretirement account titled in your own name, two funds in a nonretirement account titled jointly with your spouse, and one fund in an individual retirement account, you have six fund accounts--and this is true even if you hold the same fund in multiple accounts.

PURCHASING SHARES

Vanguard reserves the right, without prior notice, to increase or decrease the minimum amount required to open or maintain a fund account, or to add to an existing fund account.

Investment minimums may differ for certain categories of investors.

ACCOUNT MINIMUMS
TO OPEN AND MAINTAIN AN ACCOUNT. $25,000.

TO ADD TO AN EXISTING ACCOUNT. $50 by Automatic Investment Plan; $100 by check, exchange, wire, or electronic bank transfer (other than Automatic Investment Plan).

HOW TO INITIATE A PURCHASE REQUEST
Be sure to check Exchanging Shares, Frequent-Trading Limits, and Other Rules You Should Know before placing your purchase request.

ONLINE. You may open certain types of accounts, request an electronic bank transfer, and make an exchange (using the proceeds from the redemption of shares from one Vanguard fund to simultaneously purchase shares of a different Vanguard fund) through our website at www.vanguard.com if you are a registered user.

BY TELEPHONE. You may call Vanguard to begin the account registration process or request that the account-opening forms be sent to you. You may also request a purchase of shares by wire, by electronic bank transfer, or by an exchange. See Contacting Vanguard.

BY MAIL. You may send your account registration form and check to open a new fund account at Vanguard. To add to an existing fund account, you may send your check with an Invest-by-Mail form (from your account statement) or with a deposit slip (available online). You may also send a written request to Vanguard to add to a fund account or to make an exchange. For a list of Vanguard addresses, see Contacting Vanguard.

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HOW TO PAY FOR A PURCHASE
BY ELECTRONIC BANK TRANSFER. You may purchase shares of a Vanguard fund through an electronic transfer of money held in a designated bank account. To establish the electronic bank transfer option on an account, you must designate a bank account online, complete a special form, or fill out the appropriate section of your account registration form. After the option is set up on your account, you can purchase shares by electronic bank transfer on a regular schedule (Automatic Investment Plan) or whenever you wish. Your purchase request can be initiated online, by telephone, or by mail.

BY WIRE. Wiring instructions vary for different types of purchases. Please call Vanguard for instructions and policies on purchasing shares by wire. See Contacting Vanguard.

BY CHECK. You may send a check to make initial or additional purchases to your fund account. Also see How to Initiate a Purchase Request: By mail. Make your check payable to Vanguard and include the appropriate fund number (e.g., Vanguard--934). See Contacting Vanguard.

BY EXCHANGE. You may purchase shares of a Vanguard fund using the proceeds from the simultaneous redemption of shares from another Vanguard fund. You may initiate an exchange online (if you are a registered user of Vanguard.com), by telephone, or by mail. See Exchanging Shares.

TRADE DATE

The trade date for any purchase request received in good order will depend on the day and time Vanguard receives your request, the manner in which you are paying, and the type of fund you are purchasing. Your purchase will be executed using the fund's NAV as calculated on the trade date. NAVs are calculated only on days the New York Stock Exchange (NYSE) is open for trading (a business day).

For purchases by CHECK into all funds other than money market funds, and for PURCHASES BY EXCHANGES or WIRE into all funds: If the purchase request is received by Vanguard on a business day before the close of regular trading on the NYSE (generally 4 p.m., Eastern time), the trade date will be the same day. If the purchase request is received on a business day after the close of regular trading on the NYSE, or on a nonbusiness day, the trade date will be the next business day.

For purchases by CHECK into money market funds: If the purchase request is received by Vanguard on a business day before the close of regular trading on the NYSE (generally 4 p.m., Eastern time), the trade date will be the next business day. If the purchase request is received on a business day after the close of regular trading on the NYSE, or on a nonbusiness day, the trade date will be the second business day following the day Vanguard receives the purchase request. Because money market instruments must be purchased with federal funds and it takes a money market

21

mutual fund one business day to convert check proceeds into federal funds, the trade date will be one business day later than for other funds.

For purchases by electronic bank transfer using an Automatic Investment Plan:
Your trade date generally will be one business day before the date you designated for withdrawal from your bank account.

For purchases by electronic bank transfer not using an Automatic Investment Plan: If the purchase request is received by Vanguard on a business day before 10 p.m., Eastern time, the trade date will be the next business day. If the purchase request is received on a business day after 10 p.m., Eastern time, or on a nonbusiness day, the trade date will be the second business day following the day Vanguard receives the request.

If your purchase request is not accurate and complete, it may be rejected. See Other Rules You Should Know--Good Order.

For further information about purchase transactions, consult our website at www.vanguard.com or see Contacting Vanguard.

OTHER PURCHASE RULES YOU SHOULD KNOW

CHECK PURCHASES. All purchase checks must be written in U.S. dollars and must be drawn on a U.S. bank. Vanguard does not accept cash, traveler's checks, or money orders. In addition, Vanguard may refuse "starter checks" and checks that are not made payable to Vanguard.

NEW ACCOUNTS. We are required by law to obtain from you certain personal information that we will use to verify your identity. If you do not provide the information, we may not be able to open your account. If we are unable to verify your identity, Vanguard reserves the right, without prior notice, to close your account or take such other steps as we deem reasonable.

REFUSED OR REJECTED PURCHASE REQUESTS. Vanguard reserves the right to stop selling fund shares or to reject any purchase request at any time and without prior notice, including, but not limited to, purchases requested by exchange from another Vanguard fund. This also includes the right to reject any purchase request because of a history of frequent trading by the investor or because the purchase may negatively affect a fund's operation or performance.

LARGE PURCHASES. Please call Vanguard before attempting to invest a large dollar amount.

NO CANCELLATIONS. Vanguard will not accept your request to cancel any purchase request once processing has begun. Please be careful when placing a purchase request.

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REDEEMING SHARES

HOW TO INITIATE A REDEMPTION REQUEST
Be sure to check Exchanging Shares, Frequent-Trading Limits, and Other Rules You Should Know before placing your redemption request.

ONLINE. You may redeem shares, request an electronic bank transfer, and make an exchange (the purchase of shares of one Vanguard fund using the proceeds of a simultaneous redemption from another Vanguard fund) through our website at www.vanguard.com if you are a registered user.

BY TELEPHONE. You may call Vanguard to request a redemption of shares by wire, by electronic bank transfer, by check, or by an exchange. See Contacting Vanguard.

BY MAIL. You may send a written request to Vanguard to redeem from a fund account or to make an exchange. See Contacting Vanguard.

HOW TO RECEIVE REDEMPTION PROCEEDS

BY ELECTRONIC BANK TRANSFER. You may have the proceeds of a fund redemption sent directly to a designated bank account. To establish the electronic bank transfer option, you must designate a bank account online, complete a special form, or fill out the appropriate section of your account registration form. After the option is set up on your account, you can redeem shares by electronic bank transfer on a regular schedule (Automatic Withdrawal Plan--$50 minimum) or whenever you wish ($100 minimum). Your transaction can be initiated online, by telephone, or by mail.

BY WIRE. When redeeming from a money market fund or a bond fund, you may instruct Vanguard to wire your redemption proceeds ($1,000 minimum) to a previously designated bank account. Wire redemptions generally are not available for Vanguard's balanced or stock funds. The wire redemption option is not automatic; you must designate a bank account online, complete a special form, or fill out the appropriate section of your account registration form. Vanguard charges a $5 fee for wire redemptions under $5,000.

BY EXCHANGE. You may have the proceeds of a Vanguard fund redemption invested directly in shares of another Vanguard fund. You may initiate an exchange online (if you are a registered user of Vanguard.com), by telephone, or by mail.

BY CHECK. If you have not chosen another redemption method, Vanguard will mail you a redemption check, normally within two business days of your trade date.

TRADE DATE
The trade date for any redemption request received in good order will depend on the day and time Vanguard receives your request and the manner in which you are

23

redeeming. Your redemption will be executed using the fund's NAV as calculated on the trade date. NAVs are calculated only on days that the NYSE is open for trading (a business day.)

For redemptions by CHECK, EXCHANGE, OR WIRE: If the redemption request is received by Vanguard on a business day before the close of regular trading on the NYSE (generally 4 p.m., Eastern time), the trade date will be the same day. If the redemption request is received on a business day after the close of regular trading on the NYSE, or on a nonbusiness day, the trade date will be the next business day.

. Note on timing of wire redemptions from money market funds: For telephone requests received by Vanguard on a business day before 10:45 a.m., Eastern time (2 p.m., Eastern time, for Vanguard Prime Money Market Fund), the redemption proceeds will leave Vanguard by the close of business the same day. For telephone requests received by Vanguard on a business day after those cut-off times, or on a nonbusiness day, and for all requests other than by telephone, the redemption proceeds will leave Vanguard by the close of business on the next business day.

. Note on timing of wire redemptions from bond funds: For requests received by Vanguard on a business day before the close of regular trading on the NYSE (generally 4 p.m., Eastern time), the redemption proceeds will leave Vanguard by the close of business on the next business day. For requests received by Vanguard on a business day after the close of regular trading on the NYSE, or on a nonbusiness day, the redemption proceeds will leave Vanguard by the close of business on the second business day after Vanguard receives the request.

For redemptions by electronic bank transfer using an AUTOMATIC WITHDRAWAL PLAN:
Your trade date generally will be the date you designated for withdrawal of funds (redemption of shares) from your Vanguard account. Proceeds of redeemed shares generally will be credited to your designated bank account two business days after your trade date. If the trade date you designated for withdrawal falls on a weekend, holiday, or other nonbusiness day, your trade date will be the previous business day.

For redemptions by ELECTRONIC BANK TRANSFER not using an Automatic Withdrawal Plan: If the redemption request is received by Vanguard on a business day before the close of regular trading on the NYSE (generally 4 p.m., Eastern time), the trade date generally will be the same day. If the redemption request is received on a business day after the close of regular trading on the NYSE, or on a nonbusiness day, the trade date will be the next business day.

If your redemption request is not accurate and complete, it may be rejected. See Other Rules You Should Know--Good Order.

For further information about redemption transactions, consult our website at www.vanguard.com or see Contacting Vanguard.

24

REDEMPTION FEES

The Fund charges a 1% fee on shares redeemed within one year of purchase by selling or by exchanging to another fund, or if your shares are redeemed because your Fund account balance falls below the minimum initial investment for any reason, including market fluctuation. The fee is withheld from redemption proceeds and is paid directly to the Fund. Shares held for one year or more are not subject to the 1% fee.

In an effort to reduce or eliminate the redemption fees you pay, if you redeem less than your full investment in the Fund, we will first redeem those shares not subject to the fee, followed by those shares you have held the longest.

For Vanguard fund accounts (including participants in employer-sponsored defined contribution plans that are served by Vanguard Small Business Services), redemption fees will not apply to the following:

. Redemptions of shares purchased with reinvested dividend and capital gains distributions.

. Share transfers, rollovers, or re-registrations within the same fund.

. Conversions of shares from one share class to another in the same fund.

. Redemptions of shares to pay fund or account fees.

. Redemptions of shares to remove excess shareholder contributions to an IRA.

. Section 529 college savings plans.

. For a one-year period, shares rolled over to an IRA held at Vanguard from a retirement plan for which Vanguard serves as recordkeeper (except for Vanguard Small Business Services retirement plans).

. Distributions by shareholders age 701/2 or older from the following:

. Traditional IRAs.

. Inherited IRAs (traditional and Roth).

. Rollover IRAs.

. SEP-IRAs.

. SIMPLE IRAs.

. Section 403(b)(7) plans served by the Vanguard Small Business Services Department.

. Vanguard Retirement Plans for which Vanguard Fiduciary Trust Company serves as trustee.

25

For participants in employer-sponsored defined contribution plans (other than those served by the Vanguard Small Business Services Department), in addition to the exclusions previously listed, redemption fees will not apply to the following:

. Exchanges of shares purchased with participant payroll or employer contributions.

. Distributions, loans, and in-service withdrawals from a plan.

. Redemptions or transfers of shares as part of a plan termination or at the direction of the plan.

. Direct rollovers into IRAs.

Redemption fees will apply to shares exchanged out of a fund within the fund's redemption-fee period into which fund the shares had previously been exchanged, rolled over, or transferred by a participant.

If Vanguard does not serve as recordkeeper for your plan, redemption fees may be applied differently. Please read your recordkeeper's plan materials carefully to learn of any other rules or fees that may apply. Also see Frequent-Trading Limits--Accounts Held by Intermediaries for information about the assessment of redemption fees by intermediaries.

OTHER REDEMPTION RULES YOU SHOULD KNOW
DOCUMENTATION FOR CERTAIN ACCOUNTS. Special documentation may be required to redeem from certain types of accounts, such as trust, corporate, nonprofit, or retirement accounts. Please call us before attempting to redeem from these types of accounts.

POTENTIALLY DISRUPTIVE REDEMPTIONS. Vanguard reserves the right to pay all or part of a redemption in kind--that is, in the form of securities--if we reasonably believe that a cash redemption would negatively affect the fund's operation or performance or that the shareholder may be engaged in market-timing or frequent trading. Under these circumstances, Vanguard also reserves the right to delay payment of the redemption proceeds for up to seven calendar days. By calling us before you attempt to redeem a large dollar amount, you may avoid in-kind or delayed payment of your redemption. Please see Frequent-Trading Limits for information about Vanguard's policies to limit frequent trading.

RECENTLY PURCHASED SHARES. Although you can redeem shares at any time, proceeds may not be made available to you until the fund collects payment for your purchase. This may take up to ten calendar days for shares purchased by check or by electronic bank transfer. If you have written a check on a fund with checkwriting privileges, that check may be rejected if your fund account does not have a sufficient available balance.

26

SHARE CERTIFICATES. If you hold shares in certificates, those shares cannot be redeemed or exchanged until you return the certificates (unsigned) to Vanguard by registered mail. For the correct address, see Contacting Vanguard.

ADDRESS CHANGE. If you change your address online or by telephone, there may be a 15-day restriction on your ability to make online and telephone redemptions. You can request a redemption in writing at any time. Confirmations of address changes are sent to both the old and new addresses.

PAYMENT TO A DIFFERENT PERSON OR ADDRESS. At your request, we can make your redemption check payable to a different person or send it to a different address. However, this requires the written consent of all registered account owners and may require a signature guarantee. You can obtain a signature guarantee from most commercial and savings banks, credit unions, trust companies, or member firms of a U.S. stock exchange. A notary public cannot provide a signature guarantee.

NO CANCELLATIONS. Vanguard will not accept your request to cancel any redemption request once processing has begun. Please be careful when placing a redemption request.

EMERGENCY CIRCUMSTANCES. Vanguard funds can postpone payment of redemption proceeds for up to seven calendar days. In addition, Vanguard funds can suspend redemptions and/or postpone payments of redemption proceeds beyond seven calendar days at times when the NYSE is closed or during emergency circumstances, as determined by the SEC.

EXCHANGING SHARES

An exchange occurs when you use the proceeds from the redemption of shares of one Vanguard fund to simultaneously purchase shares of a different Vanguard fund. You can make exchange requests online (if you are a registered user of Vanguard.com), by telephone, or by mail. See Purchasing Shares and Redeeming Shares.

If the NYSE is open for regular trading (a business day) at the time an exchange request is received in good order, the trade date will generally be the same day. See Other Rules You Should Know--Good Order for additional information on all transaction requests.

Please note that Vanguard reserves the right, without prior notice, to revise or terminate the exchange privilege, limit the amount of any exchange, or reject an exchange, at any time, for any reason.

FREQUENT-TRADING LIMITS

Because excessive transactions can disrupt management of a fund and increase the fund's costs for all shareholders, Vanguard places certain limits on frequent trading in

27

the Vanguard funds. Each Vanguard fund (other than money market funds, short-term bond funds, and ETF Shares) limits an investor's purchases or exchanges into a fund account for 60 calendar days after the investor has redeemed or exchanged out of that fund account.

For Vanguard Retirement Investment Program pooled plans, the policy applies to exchanges made by participants online or by phone.

The policy does not apply to the following:

. Purchases of shares with reinvested dividend or capital gains distributions.

. Transactions through Vanguard's Automatic Investment Plan, Automatic Exchange Service, Direct Deposit Service, Automatic Withdrawal Plan, Required Minimum Distribution Service, and Vanguard Small Business Online/(R)/.

. Redemptions of shares to pay fund or account fees.

. Transaction requests submitted by mail to Vanguard from shareholders who hold their accounts directly with Vanguard. (Wire transactions and transaction requests submitted by fax are not mail transactions and are subject to the policy.)

. Transfers and re-registrations of shares within the same fund.

. Purchases of shares by asset transfer or direct rollover.

. Conversions of shares from one share class to another in the same fund.

. Checkwriting redemptions.

. Section 529 college savings plans.

. Certain approved institutional portfolios and asset allocation programs, as well as trades made by Vanguard funds that invest in other Vanguard funds. (Please note that shareholders of Vanguard's funds of funds are subject to the policy.)

For participants in employer-sponsored defined contribution plans that are not served by Vanguard Small Business Services, the frequent-trading policy does not apply to:

. Purchases of shares with participant payroll or employer contributions or loan repayments.

. Purchases of shares with reinvested dividend or capital gains distributions.

. Distributions, loans, and in-service withdrawals from a plan.

. Redemptions of shares as part of a plan termination or at the direction of the plan.

. Automated transactions executed during the first six months of a participant's enrollment in the Vanguard Managed Account Program.

. Redemptions of shares to pay fund or account fees.

. Share or asset transfers or rollovers.

. Re-registrations of shares.

28

. Conversions of shares from one share class to another in the same fund.

. Exchange requests submitted by mail to Vanguard. (Exchange requests submitted by fax or wire are not mail requests and remain subject to the policy.)

ACCOUNTS HELD BY INSTITUTIONS (OTHER THAN DEFINED CONTRIBUTION PLANS) Vanguard will systematically monitor for frequent trading in institutional clients' accounts. If we detect suspicious trading activity, we will investigate and take appropriate action, which may include applying to a client's accounts the 60-day policy previously described, prohibiting a client's purchases of fund shares, and/or eliminating the client's exchange privilege.

ACCOUNTS HELD BY INTERMEDIARIES

When intermediaries establish accounts in Vanguard funds for their clients, we cannot always monitor the trading activity of the individual clients. However, we review trading activity at the omnibus level, and if we detect suspicious activity, we will investigate and take appropriate action. If necessary, Vanguard may prohibit additional purchases of fund shares by an intermediary or by certain of the intermediary's clients. Intermediaries may also monitor their clients' trading activities in the Vanguard funds.

For those Vanguard funds that charge purchase or redemption fees, intermediaries will be asked to assess purchase and redemption fees on shareholder and participant accounts and remit these fees to the funds. The application of purchase and redemption fees and frequent-trading policies may vary among intermediaries. There are no assurances that Vanguard will successfully identify all intermediaries or that intermediaries will properly assess purchase and redemption fees or administer frequent-trading policies. If you invest with Vanguard through an intermediary, please read that firm's materials carefully to learn of any other rules or fees that may apply.

OTHER RULES YOU SHOULD KNOW

PROSPECTUS AND SHAREHOLDER REPORT MAILINGS
Vanguard attempts to eliminate the unnecessary expense of duplicate mailings by sending just one prospectus and/or report when two or more shareholders have the same last name and address. You may request individual prospectuses and reports by contacting our Client Services Department in writing, by telephone, or by e-mail.

VANGUARD.COM
REGISTRATION. If you are a registered user of Vanguard.com, you can use your personal computer to review your account holdings; to buy, sell, or exchange shares of most

29

Vanguard funds; and to perform most other transactions. You must register for this service online.

ELECTRONIC DELIVERY. Vanguard can deliver your account statements, transaction confirmations, and fund financial reports electronically. If you are a registered user of Vanguard.com, you can consent to the electronic delivery of these documents by logging on and changing your mailing preference under "My Profile." You can revoke your electronic consent at any time, and we will begin to send paper copies of these documents within 30 days of receiving your notice.

TELEPHONE TRANSACTIONS
AUTOMATIC. When we set up your account, we'll automatically enable you to do business with us by telephone, unless you instruct us otherwise in writing.

TELE-ACCOUNT/(R)/. To conduct account transactions through Vanguard's automated telephone service, you must first obtain a Personal Identification Number (PIN). Call Tele-Account at 800-662-6273 to obtain a PIN, and allow seven days after requesting the PIN before using this service.

PROOF OF A CALLER'S AUTHORITY. We reserve the right to refuse a telephone request if the caller is unable to provide the requested information or if we reasonably believe that the caller is not an individual authorized to act on the account. Before we allow a caller to act on an account, we may request the following information:

. Authorization to act on the account (as the account owner or by legal documentation or other means).

. Account registration and address.

. Fund name and account number, if applicable.

. Other information relating to the caller, the account holder, or the account.

SUBJECT TO REVISION. For any or all shareholders, we reserve the right, at any time and without prior notice, to revise, suspend, or terminate the privilege to transact or communicate with Vanguard by telephone.

GOOD ORDER
We reserve the right to reject any transaction instructions that are not in "good order." Good order generally means that your instructions include:

. The fund name and account number.

. The amount of the transaction (stated in dollars, shares, or percentage).

Written instructions also must include:

. Signatures of all registered owners.

30

. Signature guarantees, if required for the type of transaction. (Call Vanguard for specific signature-guarantee requirements.)

. Any supporting documentation that may be required.

The requirements vary among types of accounts and transactions.

Vanguard reserves the right, without prior notice, to revise the requirements for good order.

FUTURE TRADE-DATE REQUESTS

Vanguard does not accept requests to hold a purchase, redemption, or exchange transaction for a future date. All such requests will receive trade dates as previously described in Purchasing Shares and Redeeming Shares. Vanguard reserves the right to return future-dated purchase checks.

ACCOUNTS WITH MORE THAN ONE OWNER
If an account has more than one owner or authorized person, Vanguard will accept telephone or online instructions from any one owner or authorized person.

RESPONSIBILITY FOR FRAUD

Vanguard will not be responsible for any account losses because of fraud if we reasonably believe that the person transacting business on an account is authorized to do so. Please take precautions to protect yourself from fraud. Keep your account information private, and immediately review any account statements that we provide to you. It is important that you contact Vanguard immediately about any transactions you believe to be unauthorized.

UNCASHED CHECKS
Please cash your distribution or redemption checks promptly. Vanguard will not pay interest on uncashed checks.

UNUSUAL CIRCUMSTANCES
If you experience difficulty contacting Vanguard online, by telephone, or by Tele-Account, you can send us your transaction request by regular or express mail. See Contacting Vanguard for addresses.

INVESTING WITH VANGUARD THROUGH OTHER FIRMS

You may purchase or sell shares of most Vanguard funds through a financial intermediary, such as a bank, broker, or investment advisor. Please consult your financial intermediary to determine which, if any, shares are available through that firm and to learn about other rules that may apply.

31

Please see Frequent-Trading Limits--Accounts Held by Intermediaries for information about the assessment of redemption fees and monitoring of frequent trading for accounts held by intermediaries.

ACCOUNT SERVICE FEE
For most shareholders, Vanguard deducts a $20 account service fee from all fund accounts that have a balance below $10,000 for any reason, including market fluctuation. The account service fee applies to both retirement and nonretirement fund accounts. The fee will be assessed on fund accounts in all Vanguard funds, regardless of a fund's minimum investment amount. The account service fee, which will be collected by redeeming fund shares in the amount of $20, will be deducted from a fund account only once per calendar year.

If you register on Vanguard.com and elect to receive electronic delivery of statements, reports, and other materials for all of your fund accounts, the account service fee for balances below $10,000 will not be charged, so long as that election remains in effect.

The account service fee also does not apply to the following:

. Money market sweep accounts held through Vanguard Brokerage Services/(R)/.

. Accounts held through intermediaries.

. Accounts held by Voyager, Voyager Select, and Flagship clients. Membership is based on total household assets held at Vanguard, with a minimum of $100,000 to qualify for Vanguard Voyager Services/TM/, $500,000 for Vanguard Voyager Select Services/TM/, and $1 million for Vanguard Flagship Services/TM/. Vanguard determines membership by aggregating assets of all eligible accounts held by the investor and immediate family members who reside at the same address. Aggregate assets include investments in Vanguard mutual funds, Vanguard ETFs/TM/, annuities through Vanguard, the Vanguard 529 Plan, certain small-business accounts, and employer-sponsored retirement plans for which Vanguard provides recordkeeping services.

. Participant accounts in employer-sponsored defined contribution plans (other than those served by the Vanguard Small Business Services Department, which are subject to various fee structures). Please consult your enrollment materials for the rules that apply to your account.

. Section 529 college savings plans.

LOW-BALANCE ACCOUNTS

The Fund reserves the right, without prior notice, to liquidate any investment-only retirement-plan fund account or any nonretirement fund account whose balance falls below the minimum initial investment for any reason, including market fluctuation.

32

Shares redeemed in accordance with this policy will be subject to applicable redemption fees.

RIGHT TO CHANGE POLICIES

In addition to the rights expressly stated elsewhere in this prospectus, Vanguard reserves the right to (1) alter, add, or discontinue any conditions of purchase (including eligibility requirements), redemption, exchange, service, or privilege at any time without prior notice; (2) accept initial purchases by telephone; (3) freeze any account and/or suspend account services when Vanguard has received reasonable notice of a dispute regarding the assets in an account, including notice of a dispute between the registered or beneficial account owners or when we reasonably believe a fraudulent transaction may occur or has occurred; (4) temporarily freeze any account and/or suspend account services upon initial notification to Vanguard of the death of the shareholder until Vanguard receives required documentation in good order; (5) alter, impose, discontinue, or waive any redemption fee, account service fee, or other fees charged to a group of shareholders; and (6) redeem an account, without the owner's permission to do so, in cases of threatening conduct or suspicious, fraudulent, or illegal activity. Changes may affect any or all investors. These actions will be taken when, at the sole discretion of Vanguard management, we reasonably believe they are deemed to be in the best interest of a fund.

FUND AND ACCOUNT UPDATES

CONFIRMATION STATEMENTS

We will send (or provide online, whichever you prefer) a confirmation of your trade date and the amount of your transaction when you buy, sell, or exchange shares. However, we will not send confirmations reflecting only checkwriting redemptions or the reinvestment of dividends or capital gains distributions. For any month in which you had a checkwriting redemption, a Checkwriting Activity Statement will be sent to you itemizing the checkwriting redemptions for that month. Promptly review each confirmation statement that we provide to you by mail or online. It is important that you contact Vanguard immediately with any questions you may have about any transaction reflected on a confirmation statement, or Vanguard will consider the transaction properly processed.

PORTFOLIO SUMMARIES

We will send (or provide online, whichever you prefer) quarterly portfolio summaries to help you keep track of your accounts throughout the year. Each summary shows the market value of your account at the close of the statement period, as well as all distributions, purchases, redemptions, exchanges, and transfers for the current calendar year. Promptly review each summary that we provide to you by mail or

33

online. It is important that you contact Vanguard immediately with any questions you may have about any transaction reflected on the summary, or Vanguard will consider the transaction properly processed.

TAX STATEMENTS
For most taxable accounts, we will send annual tax statements to assist you in preparing your income tax returns. These statements, which are generally mailed in January, will report the previous year's dividend and capital gains distributions, proceeds from the sale of shares, and distributions from IRAs and other retirement plans. These statements can be viewed online.

AVERAGE-COST REVIEW STATEMENTS

For most taxable accounts, average-cost review statements will accompany annual 1099B tax forms. These tax forms show the average cost of shares that you redeemed during the previous calendar year, using the average-cost single-category method, which is one of the methods established by the IRS.

ANNUAL AND SEMIANNUAL REPORTS
We will send (or provide online, whichever you prefer) financial reports about Vanguard Selected Value Fund twice a year, in June and December. These comprehensive reports include overviews of the financial markets and provide the following specific Fund information:

. Performance assessments and comparisons with industry benchmarks.

. Reports from the advisors.

. Financial statements with listings of Fund holdings.

PORTFOLIO HOLDINGS
We generally post on our website at www.vanguard.com, in the HOLDINGS section of the Fund's Profile page, a detailed list of the securities held by the Fund (under PORTFOLIO HOLDINGS), as of the most recent calendar-quarter-end. This list is generally updated within 30 days after the end of each calendar quarter. Vanguard may exclude any portion of these portfolio holdings from publication when deemed in the best interest of the Fund. We also generally post the ten largest stock portfolio holdings of the Fund and the percentage of the Fund's total assets that each of these holdings represents, as of the most recent calendar-quarter-end. This list is generally updated within 15 calendar days after the end of each calendar quarter. Please consult the Fund's Statement of Additional Information or our website for a description of the policies and procedures that govern disclosure of the Fund's portfolio holdings.

34

CONTACTING VANGUARD

WEB
---------------------------------------------------------------------------------------------------------------
Vanguard.com For the most complete source of Vanguard news
24 hours a day, 7 days a week For fund, account, and service information
 For most account transactions
 For literature requests
---------------------------------------------------------------------------------------------------------------

PHONE
---------------------------------------------------------------------------------------------------------------
Vanguard Tele-Account/(R)/ 800-662-6273 For automated fund and account information
(ON-BOARD) For exchange transactions (subject to limitations)
 Toll-free, 24 hours a day, 7 days a week
---------------------------------------------------------------------------------------------------------------
Investor Information 800-662-7447 (SHIP) For fund and service information
(Text telephone for people with hearing For literature requests
impairment at 800-952-3335) Business hours only: Monday-Friday, 8 a.m. to 10 p.m.,
 Eastern time; Saturday, 9 a.m. to 4 p.m., Eastern time
---------------------------------------------------------------------------------------------------------------
Client Services 800-662-2739 (CREW) For account information
(Text telephone for people with hearing For most account transactions
impairment at 800-749-7273) Business hours only: Monday-Friday, 8 a.m. to 10 p.m.,
 Eastern time; Saturday, 9 a.m. to 4 p.m., Eastern time
---------------------------------------------------------------------------------------------------------------
Institutional Division For information and services for large institutional investors
888-809-8102 Business hours only: Monday-Friday, 8:30 a.m. to 9 p.m.,
 Eastern time
---------------------------------------------------------------------------------------------------------------
Intermediary Sales Support For information and services for financial intermediaries
800-997-2798 including broker-dealers, trust institutions, insurance
 companies, and financial advisors
 Business hours only: Monday-Friday, 8:30 a.m. to 7 p.m.,
 Eastern time
---------------------------------------------------------------------------------------------------------------

35

VANGUARD ADDRESSES

Please be sure to use the correct address, depending on your method of delivery. Use of an incorrect address could delay the processing of your transaction.

REGULAR MAIL (INDIVIDUALS) The Vanguard Group
 P.O. Box 1110
 Valley Forge, PA 19482-1110
----------------------------------------------------------------------
REGULAR MAIL (INSTITUTIONS) The Vanguard Group
 P.O. Box 2900
 Valley Forge, PA 19482-2900
----------------------------------------------------------------------
REGISTERED, EXPRESS, OR OVERNIGHT The Vanguard Group
 455 Devon Park Drive
 Wayne, PA 19087-1815
----------------------------------------------------------------------

FUND NUMBER
Please use the specific fund number when contacting us:


Vanguard Selected Value Fund 934

Vanguard, Vanguard.com, Connect with Vanguard, Plain Talk, Vanguard Tele-Account, Tele-Account, Vanguard ETF, Vanguard ETFs, Vanguard Small Business Online, Vanguard Brokerage Services, Vanguard Voyager Services, Voyager, Vanguard Voyager Select Services, Voyager Select, Vanguard Flagship Services, Flagship, and the ship logo are trademarks of The Vanguard Group, Inc. All other marks are the exclusive property of their respective owners.

36

GLOSSARY OF INVESTMENT TERMS

CAPITAL GAINS DISTRIBUTION. Payment to mutual fund shareholders of gains realized on securities that a fund has sold at a profit, minus any realized losses.

CASH INVESTMENTS. Cash deposits, short-term bank deposits, and money market instruments that include U.S. Treasury bills and notes, bank certificates of deposit (CDs), repurchase agreements, commercial paper, and banker's acceptances.

COMMON STOCK. A security representing ownership rights in a corporation. A stockholder is entitled to share in the company's profits, some of which may be paid out as dividends.

DIVIDEND DISTRIBUTION. Payment to mutual fund shareholders of income from interest or dividends generated by a fund's investments.

EXPENSE RATIO. The percentage of a fund's average net assets used to pay its expenses during a fiscal year. The expense ratio includes management expenses--such as advisory fees, account maintenance, reporting, accounting, legal, and other administrative expenses--and any 12b-1 distribution fees. It does not include the transaction costs of buying and selling portfolio securities.

GROWTH FUND. A mutual fund that emphasizes stocks of companies believed to have above-average potential for growth in revenue, earnings, cash flow, or other similar criteria. These stocks typically have low dividend yields and above-average prices in relation to such measures as earnings and book value.

INCEPTION DATE. The date on which the assets of a fund (or one of its share classes) are first invested in accordance with the fund's investment objective. For funds with a subscription period, the inception date is the day after that period ends. Investment performance is measured from the inception date.

INVESTMENT ADVISOR. An organization that is responsible for making the day-to-day decisions regarding a fund's investments.

MEDIAN MARKET CAP. An indicator of the size of companies in which a fund invests; the midpoint of market capitalization (market price x shares outstanding) of a fund's stocks, weighted by the proportion of the fund's assets invested in each stock. Stocks representing half of the fund's assets have market capitalizations above the median, and the rest are below it.

MUTUAL FUND. An investment company that pools the money of many people and invests it in a variety of securities in an effort to achieve a specific objective over time.

NET ASSET VALUE (NAV). The market value of a mutual fund's total assets, minus liabilities, divided by the number of shares outstanding. The value of a single share is also called its share value or share price.

37

PRINCIPAL. The face value of a debt instrument or the amount of money put into an investment.

SECURITIES. Stocks, bonds, money market instruments, and other investment vehicles.

TOTAL RETURN. A percentage change, over a specified time period, in a mutual fund's net asset value, assuming the reinvestment of all distributions of dividends and
capital gains.

VALUE FUND. A mutual fund that emphasizes stocks whose prices typically are below average in relation to such measures as earnings and book value. These stocks often have above-average dividend yields.

VOLATILITY. The fluctuations in value of a mutual fund or other security. The greater a fund's volatility, the wider the fluctuations in its returns.

YIELD. Income (interest or dividends) earned by an investment, expressed as a percentage of the investment's price.

38

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[SHIP LOGO][VANGUARD/(R)/ LOGO]

P.O. Box 2600
Valley Forge, PA 19482-2600

CONNECT WITH VANGUARD/(R)/ > www.vanguard.com

FOR MORE INFORMATION
If you would like more information about Vanguard Selected Value Fund, the following documents are available free upon request:

ANNUAL/SEMIANNUAL REPORTS TO SHAREHOLDERS
Additional information about the Fund's investments is available in the Fund's annual and semiannual reports to shareholders. In the annual report, you will find a discussion of the market conditions and investment strategies that significantly affected the Fund's performance during its last fiscal year.

STATEMENT OF ADDITIONAL INFORMATION (SAI)
The SAI provides more detailed information about the Fund.

The current annual and semiannual reports and the SAI are incorporated by reference into (and are thus legally a part of) this prospectus.

To receive a free copy of the latest annual or semiannual report or the SAI, or to request additional information about the Fund or other Vanguard funds, please visit www.vanguard.com or contact us as follows:

The Vanguard Group
Investor Information Department
P.O. Box 2600
Valley Forge, PA 19482-2600
Telephone: 800-662-7447 (SHIP)
Text telephone for people with hearing impairment: 800-952-3335

If you are a current Vanguard shareholder and would like information about your account, account transactions, and/or account statements, please call:

Client Services Department
Telephone: 800-662-2739 (CREW)
Text telephone for people with hearing impairment: 800-749-7273

INFORMATION PROVIDED BY THE SECURITIES AND EXCHANGE COMMISSION (SEC) You can review and copy information about the Fund (including the SAI) at the SEC's Public Reference Room in Washington, DC. To find out more about this public service, call the SEC at 202-551-8090. Reports and other information about the Fund are also available in the EDGAR database on the SEC's Internet site at www.sec.gov, or you can receive copies of this information, for a fee, by electronic request at the following e-mail address: publicinfo@sec.gov, or by writing the Public Reference Section, Securities and Exchange Commission, Washington, DC 20549-0102.

Fund's Investment Company Act file number:
811-07443

(C) 2008 The Vanguard Group, Inc. All rights reserved. Vanguard Marketing Corporation, Distributor.

P934 022008


VANGUARD/(R)/ SELECTED VALUE FUND

> PROSPECTUS

FOR PARTICIPANTS

February 22, 2008


[SHIP LOGO][VANGUARD/(R)/ LOGO]


This prospectus contains financial data for the Fund through the fiscal year ended October 31, 2007.

NEITHER THE SECURITIES AND EXCHANGE COMMISSION NOR ANY STATE SECURITIES COMMISSION HAS APPROVED OR DISAPPROVED OF THESE SECURITIES OR PASSED UPON THE ACCURACY OR ADEQUACY OF THIS PROSPECTUS. ANY REPRESENTATION TO THE CONTRARY IS A CRIMINAL OFFENSE.


CONTENTS

-------------------------------------------------------------------------------
Fund Profile 1 Financial Highlights 15
-------------------------------------------------------------------------------
More on the Fund 5 Investing With Vanguard 18
-------------------------------------------------------------------------------
 The Fund and Vanguard 11 Accessing Fund Information by Computer 22
-------------------------------------------------------------------------------
 Investment Advisors 11 Glossary of Investment Terms 23
-------------------------------------------------------------------------------
 Dividends, Capital 13
 Gains, and Taxes
-------------------------------------------------------------------------------
 Share Price 14
-------------------------------------------------------------------------------

WHY READING THIS PROSPECTUS IS IMPORTANT
This prospectus explains the investment objective, policies, strategies, and risks associated with the Fund. To highlight terms and concepts important to mutual fund investors, we have provided Plain Talk/(R)/ explanations along the way. Reading the prospectus will help you decide whether the Fund is the right investment for you. We suggest that you keep this prospectus for future reference.

This prospectus is intended for participants in employer-sponsored retirement or savings plans. Another version--for investors who would like to open a personal investment account--can be obtained by calling Vanguard at 800-662-7447.


FUND PROFILE

INVESTMENT OBJECTIVE
The Fund seeks to provide long-term capital appreciation and income.

PRIMARY INVESTMENT STRATEGIES

The Fund invests mainly in the stocks of medium-size U.S. companies, choosing stocks considered by an advisor to be undervalued. Undervalued stocks are generally those that are out of favor with investors and are trading at prices that the advisor believes are below-average in relation to such measures as earnings and book value. These stocks often have above-average dividend yields. The Fund uses multiple investment advisors.

PRIMARY RISKS
An investment in the Fund could lose money over short or even long periods. You should expect the Fund's share price and total return to fluctuate within a wide range, like the fluctuations of the overall stock market. The Fund's performance could be hurt by:

. Stock market risk, which is the chance that stock prices overall will decline. Stock markets tend to move in cycles, with periods of rising prices and periods of falling prices.

. Investment style risk, which is the chance that returns from mid-capitalization value stocks will trail returns from the overall stock market. Historically, mid-cap stocks have been more volatile in price than the large-cap stocks that dominate the overall market, and they often perform quite differently.

. Manager risk, which is the chance that poor security selection will cause the Fund to underperform relevant benchmarks or other funds with a similar investment objective.

. Asset concentration risk, which is the chance that the Fund's performance may be hurt disproportionately by the poor performance of relatively few stocks.

PERFORMANCE/RISK INFORMATION
The following bar chart and table are intended to help you understand the risks of investing in the Fund. The bar chart shows how the performance of the Fund has varied from one calendar year to another over the periods shown. The table shows how the average annual total returns compare with those of a relevant market index. Keep in mind that the Fund's past performance does not indicate how the Fund will perform in the future.

1

ANNUAL TOTAL RETURNS

BAR CHART
[-30% to 45%]

 1998 -11.77%
 1999 -2.72%
 2000 17.45%
 2001 14.99%
 2002 -9.79%
 2003 35.21%
 2004 20.38%
 2005 10.67%
 2006 19.11%
 2007 -0.23%
------------------------------------------------------------

During the periods shown in the bar chart, the highest return for a calendar quarter was 19.05% (quarter ended June 30, 2003), and the lowest return for a quarter was -27.23% (quarter ended September 30, 1998).

AVERAGE ANNUAL TOTAL RETURNS FOR PERIODS ENDED DECEMBER 31, 2007

 1 Year 5 Years 10 Years
---------------------------------------------------------------------------
Vanguard Selected Value Fund -0.23% 16.44% 8.39%
---------------------------------------------------------------------------
RUSSELL MIDCAP VALUE INDEX -1.42% 17.92% 10.18%
(reflects no deduction for fees or expenses)
---------------------------------------------------------------------------

FEES AND EXPENSES

The following table describes the fees and expenses you may pay if you buy and hold shares of the Fund. As is the case with all mutual funds, transaction costs incurred by the Fund for buying and selling securities are not reflected in the table. However, these costs are reflected in the investment performance figures included in this prospectus. The expenses shown under Annual Fund Operating Expenses are based on those incurred in the fiscal year ended October 31, 2007.

2

SHAREHOLDER FEES
(Fees paid directly from your investment)

--------------------------------------------------------------------------------
Sales Charge (Load) Imposed on Purchases None
--------------------------------------------------------------------------------
Purchase Fee None
--------------------------------------------------------------------------------
Sales Charge (Load) Imposed on Reinvested Dividends None
--------------------------------------------------------------------------------
Redemption Fee 1%/1/
--------------------------------------------------------------------------------

ANNUAL FUND OPERATING EXPENSES
(Expenses deducted from the Fund's assets)

--------------------------------------------------------------------------------
Management Expenses 0.40%
--------------------------------------------------------------------------------
12b-1 Distribution Fee None
--------------------------------------------------------------------------------
Other Expenses 0.02%
--------------------------------------------------------------------------------
Total Annual Fund Operating Expenses 0.42%
--------------------------------------------------------------------------------

1 The 1% fee applies to shares redeemed within one year of purchase by selling or by exchanging to another fund. The fee is withheld from redemption proceeds and retained by the Fund. Shares held for one year or more are not subject to the 1% fee.

The following example is intended to help you compare the cost of investing in the Fund with the cost of investing in other mutual funds. It illustrates the hypothetical expenses that you would incur over various periods if you invest $10,000 in the Fund's shares. This example assumes that the Fund provides a return of 5% a year and that operating expenses remain the same. The results apply whether or not you redeem your investment at the end of the given period.

1 Year 3 Years 5 Years 10 Years
---------------------------------------------------------------------
$43 $135 $235 $530
---------------------------------------------------------------------

THIS EXAMPLE SHOULD NOT BE CONSIDERED TO REPRESENT ACTUAL EXPENSES OR PERFORMANCE FROM THE PAST OR FOR THE FUTURE. ACTUAL FUTURE EXPENSES MAY BE HIGHER OR LOWER THAN THOSE SHOWN.

3


PLAIN TALK ABOUT FUND EXPENSES

All mutual funds have operating expenses. These expenses, which are deducted from a fund's gross income, are expressed as a percentage of the net assets of the fund. Vanguard Selected Value Fund's expense ratio in fiscal year 2007 was 0.42%, or $4.20 per $1,000 of average net assets. The average mid-cap value fund had expenses in 2006 of 1.45%, or $14.50 per $1,000 of average net assets (derived from data provided by Lipper Inc., which reports on the mutual fund industry). Management expenses, which are one part of operating expenses, include investment advisory fees as well as other costs of managing a fund--such as account maintenance, reporting, accounting, legal, and other administrative expenses.


PLAIN TALK ABOUT COSTS OF INVESTING

Costs are an important consideration in choosing a mutual fund. That's because you, as a shareholder, pay the costs of operating a fund, plus any transaction costs incurred when the fund buys or sells securities. These costs can erode a substantial portion of the gross income or the capital appreciation a fund achieves. Even seemingly small differences in expenses can, over time, have a dramatic effect on a fund's performance.

Additional Information
As of October 31, 2007
--------------------------------------------------------------------------------------------
Net Assets (all share classes) $5 billion
--------------------------------------------------------------------------------------------
Investment Advisor .Barrow, Hanley, Mewhinney & Strauss, Inc., Dallas, Tex.,
 since inception

 . Donald Smith & Co., Inc., New York, N.Y., since 2005
--------------------------------------------------------------------------------------------
Dividends and Capital Gains Distributed annually in December
--------------------------------------------------------------------------------------------
Inception Date February 15, 1996
--------------------------------------------------------------------------------------------
Newspaper Abbreviation SelValu
--------------------------------------------------------------------------------------------
Vanguard Fund Number 934
--------------------------------------------------------------------------------------------
CUSIP Number 921946109
--------------------------------------------------------------------------------------------
Ticker Symbol VASVX
--------------------------------------------------------------------------------------------

4

MORE ON THE FUND

This prospectus describes the primary risks you would face as a Fund shareholder. It is important to keep in mind one of the main axioms of investing: The higher the risk of losing money, the higher the potential reward. The reverse, also, is generally true: The lower the risk, the lower the potential reward. As you consider an investment in any mutual fund, you should take into account your personal tolerance for fluctuations in the securities markets. Look for this FLAG LOGO symbol throughout the prospectus. It is used to mark detailed information about the more significant risks that you would confront as a Fund shareholder.

The following sections explain the primary investment strategies and policies that the Fund uses in pursuit of its objective. The Fund's board of trustees, which oversees the Fund's management, may change investment strategies or policies in the interest of shareholders without a shareholder vote, unless those strategies or policies are designated as fundamental.

MARKET EXPOSURE
The Fund invests mainly in common stocks of mid-cap companies that are considered to have low prices in relation to their corporate earnings and book value. These stocks often have above-average dividend yields.

FLAG LOGO
THE FUND IS SUBJECT TO STOCK MARKET RISK, WHICH IS THE CHANCE THAT STOCK PRICES OVERALL WILL DECLINE. STOCK MARKETS TEND TO MOVE IN CYCLES, WITH PERIODS OF RISING PRICES AND PERIODS OF FALLING PRICES.

To illustrate the volatility of stock prices, the following table shows the best, worst, and average annual total returns for the U.S. stock market over various periods as measured by the Standard & Poor's 500 Index, a widely used barometer of market activity. (Total returns consist of dividend income plus change in market price.) Note that the returns shown do not include the costs of buying and selling stocks or other expenses that a real-world investment portfolio would incur.

U.S. STOCK MARKET RETURNS
(1926-2007)

 1 Year 5 Years 10 Years 20 Years
-----------------------------------------------------------------------------
Best 54.2% 28.6% 19.9% 17.8%
-----------------------------------------------------------------------------
Worst -43.1 -12.4 -0.8 3.1
-----------------------------------------------------------------------------
Average 12.2 10.4 11.1 11.4
-----------------------------------------------------------------------------

The table covers all of the 1-, 5-, 10-, and 20-year periods from 1926 through 2007. You can see, for example, that although the average return on common stocks for all of the 5-year periods was 10.4%, average returns for individual 5-year periods ranged from -12.4% (from 1928 through 1932) to 28.6% (from 1995 through 1999). These average

5

returns reflect past performance of common stocks; you should not regard them as an indication of future performance of either the stock market as a whole or the Fund in particular.

Stocks of publicly traded companies and funds that invest in stocks are often classified according to market value, or market capitalization. These classifications typically include small-cap, mid-cap, and large-cap. It's important to understand that, for both companies and stock funds, market-capitalization ranges change over time. Also, interpretations of size vary, and there are no "official" definitions of small-, mid-, and large-cap, even among Vanguard fund advisors. The asset-weighted median market capitalization of the Fund as of October 31, 2007, was $6.1 billion.

FLAG LOGO
THE FUND IS SUBJECT TO INVESTMENT STYLE RISK, WHICH IS THE CHANCE THAT RETURNS FROM MID-CAPITALIZATION VALUE STOCKS WILL TRAIL RETURNS FROM THE OVERALL STOCK MARKET. HISTORICALLY, MID-CAP STOCKS HAVE BEEN MORE VOLATILE IN PRICE THAN THE LARGE-CAP STOCKS THAT DOMINATE THE OVERALL MARKET, AND THEY OFTEN PERFORM QUITE DIFFERENTLY.


PLAIN TALK ABOUT GROWTH FUNDS AND VALUE FUNDS

Growth investing and value investing are two styles employed by stock-fund managers. Growth funds generally focus on stocks of companies believed to have above-average potential for growth in revenue, earnings, cash flow, or other similar criteria. These stocks typically have low dividend yields and above-average prices in relation to such measures as earnings and book value. Value funds typically emphasize stocks whose prices are below average in relation to those measures; these stocks often have above-average dividend yields. Growth and value stocks have historically produced similar long-term returns, though each category has periods when it outperforms the other.

SECURITY SELECTION
The Fund uses multiple investment advisors. Each advisor independently selects and maintains a portfolio of common stocks for the Fund.

These advisors employ active investment management methods, which means that securities are bought and sold according to the advisors' evaluations of companies and their financial prospects, the prices of the securities, and the stock market and the economy in general. Each advisor will sell a security when it is no longer as attractive as an alternative investment.

Each advisor uses a different process to select securities for its portion of the Fund's assets.

6

Barrow, Hanley, Mewhinney & Strauss, Inc. (Barrow, Hanley), which manages approximately 76% of the Fund's assets, seeks out medium-size companies that it considers to be undervalued, choosing them on the basis of extensive research and discussions with company management. According to Barrow, Hanley, a company is undervalued if its earnings potential is not reflected in its share price. Barrow, Hanley looks for individual stocks that reflect these value characteristics: price/earnings and price/book value ratios below those of the market, as well as dividend yields above those of the market. Barrow, Hanley holds an undervalued stock until the advisor believes the stock's price reflects the company's underlying value.

Donald Smith & Co., Inc. (Donald Smith & Co.), which manages approximately 22% of the Fund's assets, employs a strictly bottom-up investment approach that seeks out stocks of out-of-favor companies selling at discounts to tangible book value. Donald Smith & Co. looks for companies in the bottom decile of price-to-tangible-book value ratios that have positive outlooks for earnings potential over the next two to four years. Donald Smith & Co. employs traditional fundamental research techniques with the objective of determining the extent of earnings a company's asset base can generate.

The Vanguard Group (Vanguard) manages a small portion, approximately 2%, of the Fund's assets to facilitate cash flows to and from the Fund's advisors. Vanguard typically invests its portion of the Fund's assets in stock index futures and/or shares of exchange-traded funds (ETFs). For more details, see "Other Investment Policies and Risks."

FLAG LOGO
BECAUSE THE FUND TENDS TO INVEST A HIGH PERCENTAGE OF ASSETS IN ITS TEN LARGEST HOLDINGS, THE FUND IS SUBJECT TO ASSET CONCENTRATION RISK, WHICH IS THE CHANCE THAT THE FUND'S PERFORMANCE MAY BE HURT DISPROPORTIONATELY BY THE POOR

PERFORMANCE OF RELATIVELY FEW STOCKS.

The Fund is generally managed without regard to tax ramifications.

FLAG LOGO
THE FUND IS SUBJECT TO MANAGER RISK, WHICH IS THE CHANCE THAT POOR SECURITY SELECTION WILL CAUSE THE FUND TO UNDERPERFORM RELEVANT BENCHMARKS OR OTHER

FUNDS WITH A SIMILAR INVESTMENT OBJECTIVE.

OTHER INVESTMENT POLICIES AND RISKS
Besides investing in U.S. mid-cap value stocks, the Fund may make other kinds of investments to achieve its objective.

Although the Fund typically does not make significant investments in foreign securities, it reserves the right to invest up to 25% of its assets this way. To the extent that it owns foreign securities, the Fund is subject to country risk and currency risk. Country risk is the chance that world events--such as political upheaval, financial

7

troubles, or natural disasters--will adversely affect the value of securities issued by companies in foreign countries. In addition, the prices of foreign stocks and the prices of U.S. stocks have, at times, moved in opposite directions. Currency risk is the chance that the value of a foreign investment, measured in U.S. dollars, will decrease because of unfavorable changes in currency exchange rates.

The Fund may invest, to a limited extent, in derivatives. Generally speaking, a derivative is a financial contract whose value is based on the value of a financial asset (such as a stock, bond, or currency), a physical asset (such as gold), or a market index (such as the S&P 500 Index). The Fund will not use derivatives for speculation or for the purpose of leveraging (magnifying) investment returns.

The Fund may enter into forward foreign currency exchange contracts, which are types of derivative contracts. A forward foreign currency exchange contract is an agreement to buy or sell a country's currency at a specific price on a specific date, usually 30, 60, or 90 days in the future. In other words, the contract guarantees an exchange rate on a given date. Managers of funds that invest in foreign securities can use these contracts to guard against sudden, unfavorable changes in the U.S. dollar/foreign currency exchange rates. These contracts, however, will not prevent the Fund's securities from falling in value during foreign market downswings.

Vanguard typically invests a small portion of the Fund's assets in stock index futures and/or shares of exchange-traded funds (ETFs), including ETF Shares issued by Vanguard stock index funds. Stock index futures and ETFs provide returns similar to those of common stocks. Vanguard may purchase futures or ETFs when doing so will reduce the Fund's transaction costs or add value because the instruments are favorably priced. Vanguard receives no additional revenue from investing Fund assets in ETF Shares of other Vanguard funds. Fund assets invested in ETF Shares are excluded when allocating to the Fund its share of the costs of Vanguard operations.

CASH MANAGEMENT

The Fund's daily cash balance may be invested in one or more Vanguard CMT Funds, which are very low-cost money market funds. When investing in a Vanguard CMT Fund, the Fund bears its proportionate share of the at-cost expenses of the CMT Fund in which it invests.

TEMPORARY INVESTMENT MEASURES

The Fund may temporarily depart from its normal investment policies and strategies when doing so is believed to be in the Fund's best interest, so long as the alternative is consistent with the Fund's investment objective. For instance, the Fund may invest beyond the normal limits in derivatives or ETFs that are consistent with the Fund's objective when those instruments are more favorably priced or provide needed

8

liquidity, as might be the case when the Fund is transitioning assets from one advisor to another or receives large cash flows that it cannot prudently invest immediately.

In addition, the Fund may take temporary defensive positions that are inconsistent with its normal investment policies and strategies--for instance, by allocating substantial assets to cash, commercial paper, or other less volatile instruments--in response to adverse or unusual market, economic, political, or other conditions. In doing so, the Fund may succeed in avoiding losses but may otherwise fail to achieve its investment objective.

REDEMPTION FEE
The Fund charges a redemption fee. Participants who exchange shares into a fund that charges a redemption fee will be subject to the redemption fee if they subsequently exchange those shares out of the fund within the fund's redemption-fee period.

When shares are exchanged out of the Fund, Vanguard first exchanges shares that are exempt from redemption fees (such as shares purchased with reinvested dividend or capital gains distributions and shares purchased with plan participant payroll or employer contributions). Shares a participant has held the longest will be redeemed next.

Unlike a sales charge or a load paid to a broker or a fund management company, the redemption fee is paid directly to the Fund to offset the costs of buying and selling securities. The fee is designed to ensure that short-term investors pay their share of the Fund's transaction costs and that long-term investors do not subsidize the activities of short-term traders.

See the FUND PROFILE and INVESTING WITH VANGUARD for more information about fees.

FREQUENT TRADING OR MARKET-TIMING
BACKGROUND. Some investors try to profit from strategies involving frequent trading of mutual fund shares, such as market-timing. For funds holding foreign securities, investors may try to take advantage of an anticipated difference between the price of the fund's shares and price movements in overseas markets, a practice also known as time-zone arbitrage. Investors also may try to engage in frequent trading of funds holding investments such as small-cap stocks and high-yield bonds. As money is shifted into and out of a fund by a shareholder engaging in frequent trading, a fund incurs costs for buying and selling securities, resulting in increased brokerage and administrative costs. These costs are borne by all fund shareholders, including the long-term investors who do not generate the costs. In addition, frequent trading may interfere with an advisor's ability to efficiently manage the fund.

POLICIES TO ADDRESS FREQUENT TRADING. The Vanguard funds (other than money market funds, short-term bond funds, and Vanguard ETF/ TM/ Shares) do not knowingly accommodate frequent trading. The board of trustees of each Vanguard fund has

9

adopted policies and procedures reasonably designed to detect and discourage frequent trading and, in some cases, to compensate the fund for the costs associated with it. Although there is no assurance that Vanguard will be able to detect or prevent frequent trading or market-timing in all circumstances, the following policies have been adopted to address these issues:

. Each Vanguard fund reserves the right to reject any purchase request--including exchanges from other Vanguard funds--without notice and regardless of size. For example, a purchase request could be rejected if Vanguard determines that such purchase may negatively affect a fund's operation or performance or because of a history of frequent trading by the investor.

. Each Vanguard fund (other than money market funds, short-term bond funds, and ETF Shares) generally prohibits, except as otherwise noted in the INVESTING WITH VANGUARD section, a participant from exchanging into a fund account for 60 calendar days after the participant exchanged out of that fund account.

. Certain Vanguard funds charge shareholders purchase and/or redemption fees on transactions.

See the INVESTING WITH VANGUARD section of this prospectus for further details on Vanguard's transaction policies.

Each fund (other than money market funds), in determining its net asset value, will, when appropriate, use fair-value pricing, as described in the Share Price section. Fair-value pricing may reduce or eliminate the profitability of certain frequent-trading strategies.

DO NOT INVEST WITH VANGUARD IF YOU ARE A MARKET-TIMER.

TURNOVER RATE

Although the Fund normally seeks to invest for the long term, it may sell securities regardless of how long they have been held. The Financial Highlights section of this prospectus shows historical turnover rates for the Fund. A turnover rate of 100%, for example, would mean that the Fund had sold and replaced securities valued at 100% of its net assets within a one-year period. The average turnover rate for mid-cap value funds was approximately 77%, as reported by Morningstar, Inc., on October 31, 2007.

10


PLAIN TALK ABOUT TURNOVER RATE

Before investing in a mutual fund, you should review its turnover rate. This gives an indication of how transaction costs, which are not included in the fund's expense ratio, could affect the fund's future returns. In general, the greater the volume of buying and selling by the fund, the greater the impact that brokerage commissions and other transaction costs will have on its return. Also, funds with high turnover rates may be more likely to generate capital gains that must be distributed to shareholders as taxable income.

THE FUND AND VANGUARD

The Fund is a member of The Vanguard Group, a family of 37 investment companies with more than 150 funds holding assets in excess of $1.2 trillion. All of the funds that are members of The Vanguard Group share in the expenses associated with administrative services and business operations, such as personnel, office space, equipment, and advertising.

Vanguard also provides marketing services to the funds. Although shareholders do not pay sales commissions or 12b-1 distribution fees, each fund (or in the case of a fund with multiple share classes, each share class of the fund) pays its allocated share of The Vanguard Group's marketing costs.


PLAIN TALK ABOUT VANGUARD'S UNIQUE CORPORATE STRUCTURE

The Vanguard Group is truly a MUTUAL mutual fund company. It is owned jointly by the funds it oversees and thus indirectly by the shareholders in those funds. Most other mutual funds are operated by management companies that may be owned by one person, by a group of individuals, or by investors who own the management company's stock. The management fees charged by these companies include a profit component over and above the companies' cost of providing services. By contrast, Vanguard provides services to its member funds on an at-cost basis, with no profit component, which helps to keep the funds' expenses low.

INVESTMENT ADVISORS

The Fund uses a multimanager approach. Each advisor independently manages its assigned portion of the Fund's assets, subject to the supervision and oversight of Vanguard and the board of trustees. The Fund's board of trustees designates the

11

proportion of the Fund assets to be managed by each advisor and may change these proportions at any time.

. Barrow, Hanley, Mewhinney & Strauss, Inc., 2200 Ross Avenue, 31st Floor, Dallas, TX 75201, is an investment advisory firm founded in 1979. Barrow, Hanley is a subsidiary of Old Mutual Asset Managers (US) LLC, which is a subsidiary of Old Mutual plc. As of October 31, 2007, the firm managed approximately $72 billion in assets.

. Donald Smith & Co., Inc., 152 West 57th Street, 22nd Floor, New York, NY 10019, is an investment advisory firm that was founded as Home Portfolio Advisors in 1975 and renamed Donald Smith & Co., Inc., in 1984. As of October 31, 2007, Donald Smith & Co. managed approximately $4.6 billion in assets.

Each advisor's fee is paid quarterly and is based on certain annual percentage rates applied to the average daily net assets managed by the advisor for each quarter. In addition, the quarterly fees paid to each advisor are increased or decreased based on the advisor's performance compared with that of a benchmark index. For these purposes, the cumulative total return of the Barrow, Hanley portion of the Fund over a trailing 36-month period is compared with that of the Russell Midcap Value Index over the same period, and the cumulative total return of the Donald Smith & Co. portion of the Fund over a trailing 60-month period is compared with that of the Morgan Stanley Capital International US Investable Market 2500 Index over the same period.

For the fiscal year ended October 31, 2007, the advisory fee represented an effective annual rate of 0.22% of the Fund's average net assets before a performance-based decrease of 0.02%.

Under the terms of an SEC exemption, the Fund's board of trustees may, without prior approval from shareholders, change the terms of an advisory agreement or hire a new investment advisor--either as a replacement for an existing advisor or as an additional advisor. Any significant change in the Fund's advisory arrangements will be communicated to shareholders in writing. In addition, as the Fund's sponsor and overall manager, The Vanguard Group may provide investment advisory services to the Fund, on an at-cost basis, at any time. Vanguard may also recommend to the board of trustees that an advisor be hired, terminated, or replaced, or that the terms of an existing advisory agreement be revised.

For a discussion of why the board of trustees approved the Fund's investment advisory agreements, see the most recent semiannual report to shareholders covering the fiscal period ended April 30.

12


PLAIN TALK ABOUT THE FUND'S PORTFOLIO MANAGERS

The managers primarily responsible for the day-to-day management of the Fund are:

JAMES P. BARROW, Founding Partner of Barrow, Hanley. He has managed investment portfolios since 1963; has been with Barrow, Hanley since 1979; and has co-managed a portion of the Fund since 1999. Education: B.S., University of South Carolina.

MARK GIAMBRONE, Fund Manager at Barrow, Hanley. He has managed investment portfolios for Barrow, Hanley since 1998 and has co-managed a portion of the Fund with since 2002. Education: B.S., Indiana University; M.B.A., University of Chicago.

DONALD G. SMITH, Chief Investment Officer of Donald Smith & Co. He has worked in investment management since 1968; has been with the investment advisory firm that was founded as Home Portfolio Advisors and renamed Donald Smith & Co., Inc., since 1980; and has co-managed a portion of the Fund since 2005. Education: B.S., University of Illinois; M.B.A., Harvard University; J.D.,
UCLA.

RICHARD L. GREENBERG, CFA, Senior Portfolio Manager of Donald Smith & Co. He has worked in investment management since 1981; has been with the investment advisory firm that was founded as Home Portfolio Advisors and renamed Donald Smith & Co., Inc., since 1981; and has co-managed a portion of the Fund with Mr. Smith since 2005. Education: B.S., SUNY Binghamton; M.B.A., University of Pennsylvania.

The Statement of Additional Information provides information about each portfolio manager's compensation, other accounts under management, and ownership of securities in the Fund.

DIVIDENDS, CAPITAL GAINS, AND TAXES

The Fund distributes to shareholders virtually all of its net income (interest and dividends, less expenses) as well as any net capital gains realized from the sale of its holdings. Distributions generally occur annually in December.

Your distributions will be reinvested in additional Fund shares and accumulate on a tax-deferred basis if you are investing through an employer-sponsored retirement or savings plan. You will not owe taxes on these distributions until you begin withdrawals from the plan. You should consult your plan administrator, your plan's Summary Plan Description, or your tax advisor about the tax consequences of plan withdrawals.

13


PLAIN TALK ABOUT DISTRIBUTIONS

As a shareholder, you are entitled to your portion of a fund's income from interest and dividends as well as gains from the sale of investments. Income consists of both the dividends that the fund earns from any stock holdings and the interest it receives from any money market and bond investments. Capital gains are realized whenever the fund sells securities for higher prices than it paid for them. These capital gains are either short-term or long-term, depending on whether the fund held the securities for one year or less or for more than one year. You receive the fund's earnings as either a dividend or capital gains distribution.

SHARE PRICE

The Fund's share price, called its net asset value, or NAV, is calculated each business day as of the close of regular trading on the New York Stock Exchange, generally 4 p.m., Eastern time. NAV per share is computed by dividing the net assets of the Fund by the number of Fund shares outstanding. On holidays or other days when the Exchange is closed, the NAV is not calculated, and the Fund does not transact purchase or redemption requests. However, on those days the value of the Fund's assets may be affected to the extent that the Fund holds foreign securities that trade on foreign markets that are open.

Stocks held by a Vanguard fund are valued at their market value when reliable market quotations are readily available. Certain short-term debt instruments used to manage a fund's cash are valued on the basis of amortized cost. The values of any foreign securities held by a fund are converted into U.S. dollars using an exchange rate obtained from an independent third party. The values of any mutual fund shares held by a fund are based on the NAVs of the shares. The values of any ETF or closed-end fund shares held by a fund are based on the market value of the shares.

When reliable market quotations are not readily available, securities are priced at their fair value (the amount that the owner might reasonably expect to receive upon the current sale of a security). A fund also will use fair-value pricing if the value of a security it holds has been materially affected by events occurring before the fund's pricing time but after the close of the primary markets or exchanges on which the security is traded. This most commonly occurs with foreign securities, which may trade on foreign exchanges that close many hours before the fund's pricing time. Intervening events might be company-specific (e.g., earnings report, merger announcement); country-specific (e.g., natural disaster, economic or political news, act of terrorism, interest rate change); or global. Intervening events include price movements in U.S. markets that are deemed to affect the value of foreign securities. Fair-value pricing may be used for domestic securities--for example, if (1) trading in a

14

security is halted and does not resume before the fund's pricing time or if a security does not trade in the course of a day, and (2) the fund holds enough of the security that its price could affect the fund's NAV.

Fair-value prices are determined by Vanguard according to procedures adopted by the board of trustees. When fair-value pricing is employed, the prices of securities used by a fund to calculate its NAV may differ from quoted or published prices for the same securities.

Vanguard fund share prices can be found daily in the mutual fund listings of most major newspapers under various "Vanguard" headings.

FINANCIAL HIGHLIGHTS

The following financial highlights table is intended to help you understand the Fund's financial performance for the periods shown, and certain information reflects financial results for a single Fund share. The total returns in the table represent the rate that an investor would have earned or lost each period on an investment in the Fund (assuming reinvestment of all distributions). This information has been derived from the financial statements audited by PricewaterhouseCoopers LLP, an independent registered public accounting firm, whose report--along with the Fund's financial statements--is included in the Fund's most recent annual report to shareholders. To receive a free copy of the latest annual or semiannual report, you may access a report online at www.vanguard.com, or you may contact Vanguard by telephone or by mail.

15


PLAIN TALK ABOUT HOW TO READ THE FINANCIAL HIGHLIGHTS TABLE

The Fund began fiscal year 2007 with a net asset value (price) of $21.38 per share. During the year, the Fund earned $0.40 per share from investment income (interest and dividends) and $1.70 per share from investments that had appreciated in value or that were sold for higher prices than the Fund paid for them.

Shareholders received $1.37 per share in the form of dividend and capital gains distributions. A portion of each year's distributions may come from the prior year's income or capital gains.

The share price at the end of the year was $22.11, reflecting earnings of $2.10 per share and distributions of $1.37 per share. This was an increase of $0.73 per share (from $21.38 at the beginning of the year to $22.11 at the end of the year). For a shareholder who reinvested the distributions in the purchase of more shares, the total return was 10.15% for the year.

As of October 31, 2007, the Fund had approximately $5 billion in net assets. For the year, the expense ratio was 0.42% ($4.20 per $1,000 of net assets), and the net investment income amounted to 1.74% of its average net assets. The Fund sold and replaced securities valued at 33% of its net assets.

16

SELECTED VALUE FUND
 Year Ended October 31,
 -------------------------------------------------------------------------------------
 2007 2006 2005 2004 2003
-----------------------------------------------------------------------------------------------------------------------------------
NET ASSET VALUE, BEGINNING OF PERIOD $21.38 $18.99 $16.76 $14.10 $11.27
-----------------------------------------------------------------------------------------------------------------------------------
INVESTMENT OPERATIONS
-----------------------------------------------------------------------------------------------------------------------------------
Net Investment Income .40 .35 .30 .26 .25
-----------------------------------------------------------------------------------------------------------------------------------
Net Realized and Unrealized Gain (Loss) 1.70 3.18 2.19 2.66 2.82
on Investments/1/
-----------------------------------------------------------------------------------------------------------------------------------
Total from Investment Operations 2.10 3.53 2.49 2.92 3.07
-----------------------------------------------------------------------------------------------------------------------------------
DISTRIBUTIONS
-----------------------------------------------------------------------------------------------------------------------------------
Dividends from Net Investment Income (.32) (.29) (.26) (.26) (.24)
-----------------------------------------------------------------------------------------------------------------------------------
Distributions from Realized Capital Gains (1.05) (.85) -- -- --
-----------------------------------------------------------------------------------------------------------------------------------
Total Distributions (1.37) (1.14) (.26) (.26) (.24)
-----------------------------------------------------------------------------------------------------------------------------------
NET ASSET VALUE, END OF PERIOD $22.11 $21.38 $18.99 $16.76 $14.10
-----------------------------------------------------------------------------------------------------------------------------------

TOTAL RETURN/2/ 10.15% 19.38% 14.96% 20.94% 27.74%
-----------------------------------------------------------------------------------------------------------------------------------
RATIOS/SUPPLEMENTAL DATA
-----------------------------------------------------------------------------------------------------------------------------------
Net Assets, End of Period (Millions) $4,991 $4,326 $3,707 $1,925 $1,265
-----------------------------------------------------------------------------------------------------------------------------------
Ratio of Total Expenses to Average Net 0.42% 0.45% 0.51% 0.60% 0.78%
Assets/3/
-----------------------------------------------------------------------------------------------------------------------------------
Ratio of Net Investment Income to Average 1.74% 1.75% 1.81% 1.78% 2.05%
Net Assets
-----------------------------------------------------------------------------------------------------------------------------------
Turnover Rate 33% 37% 28% 35% 40%
-----------------------------------------------------------------------------------------------------------------------------------
1 Includes increases from redemption fees of $0.01, $0.01, $0.01, $0.01, and $0.01.
2 Total returns do not reflect the 1% fee assessed on redemptions after March 23, 2005, of shares held for less than one year, or
 the 1% fee assessed until March 23, 2005, on shares purchased on or after August 7, 2001, and held for less than five years.
3 Includes performance-based investment advisory fee increases (decreases) of (0.02%), (0.05%), (0.02%), 0.01%,
 and 0.11%.

17

INVESTING WITH VANGUARD

The Fund is an investment option in your retirement or savings plan. Your plan administrator or your employee benefits office can provide you with detailed information on how to participate in your plan and how to elect the Fund as an investment option.

. If you have any questions about the Fund or Vanguard, including those about the Fund's investment objective, strategies, or risks, contact Vanguard's Participant Access Center, toll-free, at 800-523-1188.

. If you have questions about your account, contact your plan administrator or the organization that provides recordkeeping services for your plan.

. Be sure to carefully read each topic that pertains to your transactions with Vanguard.

. Vanguard reserves the right to change these policies without prior notice to shareholders.

INVESTMENT OPTIONS AND ALLOCATIONS
Your plan's specific provisions may allow you to change your investment selections, the amount of your contributions, or how your contributions are allocated among the investment choices available to you. Contact your plan administrator or employee benefits office for more details.

TRANSACTIONS
Contribution, exchange, or redemption requests must be in good order. Good order means that your request includes complete information on your contribution, exchange, or redemption, and that Vanguard has received the appropriate assets.

In all cases, your transaction will be based on the Fund's next-determined NAV after Vanguard receives your request (or, in the case of new contributions, the next-determined NAV after Vanguard receives the order from your plan administrator). As long as this request is received before the close of trading on the New York Stock Exchange, generally 4 p.m., Eastern time, you will receive that day's NAV. This is known as your trade date.

REDEMPTION FEES
Redemption fees apply to shares exchanged out of a fund into which they were exchanged, rolled over, or transferred by the participant within the fund's redemption-fee period. The fee is withheld from redemption proceeds and is retained by the fund. Shares held longer than the redemption-fee holding period are not subject to the fee.

After exchanging shares that are exempt from redemption fees, shares you have held the longest will be exchanged first.

For retirement plan participants, redemption fees do not apply to the following:

18

. Exchanges of shares purchased with participant payroll or employer contributions.

. Exchanges of shares purchased with reinvested dividend and capital gains distributions.

. Distributions, loans, and in-service withdrawals from a plan.

. Redemptions or transfers of shares as part of a plan termination or at the direction of the plan.

. Direct rollovers into IRAs.

. Conversions of shares from one share class to another in the same fund.

. Redemptions of shares to pay fund or account fees.

. Re-registrations of shares in the same fund.

EXCHANGES
The exchange privilege (your ability to redeem shares from one fund to purchase shares of another fund) may be available to you through your plan. Although we make every effort to maintain the exchange privilege, Vanguard reserves the right to revise or terminate this privilege, limit the amount of an exchange, or reject any exchange, at any time, without notice. Because excessive exchanges can disrupt the management of the Vanguard funds and increase their transaction costs, Vanguard places certain limits on the exchange privilege.

If you are exchanging out of any Vanguard fund (other than money market funds and short-term bond funds), the following policy applies, regardless of the dollar amount:

You must wait 60 days before exchanging back into the fund. The 60-day clock restarts after every exchange out of the fund.

The policy does not apply to the following:

. Exchange requests submitted by mail to Vanguard. (Exchange requests submitted by fax or wire are not mail requests and remain subject to the policy.)

. Purchases of shares with participant payroll or employer contributions or loan repayments.

. Purchases of shares with reinvested dividend or capital gains distributions.

. Distributions, loans, and in-service withdrawals from a plan.

. Redemptions of shares as part of a plan termination or at the direction of the plan.

. Redemptions of shares to pay fund or account fees.

. Share or asset transfers or rollovers.

. Re-registrations of shares within the same fund.

. Conversions of shares from one share class to another in the same fund.

19

. Automated transactions executed during the first six months of a participant's enrollment in the Vanguard Managed Account Program.

Before making an exchange to or from another fund available in your plan, consider the following:

. Certain investment options, particularly funds made up of company stock or investment contracts, may be subject to unique restrictions.

. Be sure to read that fund's prospectus. Contact Vanguard's Participant Access Center, toll-free, at 800-523-1188 for a copy.

. Vanguard can accept exchanges only as permitted by your plan. Contact your plan administrator for details on other exchange policies that apply to your plan.

PLANS FOR WHICH VANGUARD DOES NOT SERVE AS RECORDKEEPER: If Vanguard does not serve as recordkeeper for your plan, your plan's recordkeeper will establish accounts in Vanguard funds. In such accounts, we cannot always monitor the trading activity of individual clients. However, we review trading activity at the omnibus level, and if we detect suspicious activity, we will investigate and take appropriate action. If necessary, Vanguard may prohibit additional purchases of fund shares by an intermediary or by certain of the intermediary's clients. Intermediaries may also monitor participants' trading activity in the Vanguard funds.

For those Vanguard funds that charge purchase or redemption fees, intermediaries that establish accounts in the Vanguard funds will be asked to assess purchase and redemption fees on participant accounts and remit these fees to the funds. The application of purchase and redemption fees and frequent-trading policies may vary among intermediaries. There are no assurances that Vanguard will successfully identify all intermediaries or that intermediaries will properly assess purchase and redemption fees or administer frequent-trading policies. If a firm other than Vanguard serves as recordkeeper for your plan, please read that firm's materials carefully to learn of any other rules or fees that may apply.

20

PORTFOLIO HOLDINGS

We generally post on our website at www.vanguard.com, in the Holdings section of the Fund's Profile page, a detailed list of the securities held by the Fund (under Portfolio Holdings), as of the most recent calendar-quarter-end. This list is generally updated within 30 days after the end of each calendar quarter. Vanguard may exclude any portion of these portfolio holdings from publication when deemed in the best interest of the Fund. We also generally post the ten largest stock portfolio holdings of the Fund and the percentage of the Fund's total assets that each of these holdings represents, as of the most recent calendar-quarter-end. This list is generally updated within 15 calendar days after the end of each calendar quarter. Please consult the Fund's Statement of Additional Information or our website for a description of the policies and procedures that govern disclosure of the Fund's portfolio holdings.

21

ACCESSING FUND INFORMATION BY COMPUTER

VANGUARD ON THE WORLD WIDE WEB WWW.VANGUARD.COM
Use your personal computer to visit Vanguard's education-oriented website, which provides timely news and information about Vanguard funds and services; the online Education Center that offers a variety of mutual fund classes; and easy-to-use, interactive tools to help you create your own investment and retirement strategies.

Vanguard, Connect with Vanguard, Plain Talk, Vanguard ETF, and the ship logo are trademarks of The Vanguard Group, Inc. All other marks are the exclusive property of their respective owners.

22

GLOSSARY OF INVESTMENT TERMS

CAPITAL GAINS DISTRIBUTION. Payment to mutual fund shareholders of gains realized on securities that a fund has sold at a profit, minus any realized losses.

CASH INVESTMENTS. Cash deposits, short-term bank deposits, and money market instruments that include U.S. Treasury bills and notes, bank certificates of deposit (CDs), repurchase agreements, commercial paper, and banker's acceptances.

COMMON STOCK. A security representing ownership rights in a corporation. A stockholder is entitled to share in the company's profits, some of which may be paid out as dividends.

DIVIDEND DISTRIBUTION. Payment to mutual fund shareholders of income from interest or dividends generated by a fund's investments.

EXPENSE RATIO. The percentage of a fund's average net assets used to pay its expenses during a fiscal year. The expense ratio includes management expenses--such as advisory fees, account maintenance, reporting, accounting, legal, and other administrative expenses--and any 12b-1 distribution fees. It does not include the transaction costs of buying and selling portfolio securities.

GROWTH FUND. A mutual fund that emphasizes stocks of companies believed to have above-average potential for growth in revenue, earnings, cash flow, or other similar criteria. These stocks typically have low dividend yields and above-average prices in relation to such measures as earnings and book value.

INCEPTION DATE. The date on which the assets of a fund (or one of its share classes) are first invested in accordance with the fund's investment objective. For funds with a subscription period, the inception date is the day after that period ends. Investment performance is measured from the inception date.

INVESTMENT ADVISOR. An organization that is responsible for making the day-to-day decisions regarding a fund's investments.

MEDIAN MARKET CAP. An indicator of the size of companies in which a fund invests; the midpoint of market capitalization (market price x shares outstanding) of a fund's stocks, weighted by the proportion of the fund's assets invested in each stock. Stocks representing half of the fund's assets have market capitalizations above the median, and the rest are below it.

MUTUAL FUND. An investment company that pools the money of many people and invests it in a variety of securities in an effort to achieve a specific objective over time.

Net Asset Value (NAV). The market value of a mutual fund's total assets, minus liabilities, divided by the number of shares outstanding. The value of a single share is also called its share value or share price.

23

PRINCIPAL. The face value of a debt instrument or the amount of money put into an investment.

SECURITIES. Stocks, bonds, money market instruments, and other investment vehicles.

TOTAL RETURN. A percentage change, over a specified time period, in a mutual fund's net asset value, assuming the reinvestment of all distributions of dividends and
capital gains.

VALUE FUND. A mutual fund that emphasizes stocks whose prices typically are below average in relation to such measures as earnings and book value. These stocks often have above-average dividend yields.

VOLATILITY. The fluctuations in value of a mutual fund or other security. The greater a fund's volatility, the wider the fluctuations in its returns.

YIELD. Income (interest or dividends) earned by an investment, expressed as a percentage of the investment's price.

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[SHIP LOGO][VANGUARD/(R)/ LOGO]

Institutional Division
P.O. Box 2900
Valley Forge, PA 19482-2900

CONNECT WITH VANGUARD/(R)/ > www.vanguard.com

FOR MORE INFORMATION
If you would like more information about Vanguard Selected Value Fund, the following documents are available free upon request:

ANNUAL/SEMIANNUAL REPORTS TO SHAREHOLDERS
Additional information about the Fund's investments is available in the Fund's annual and semiannual reports to shareholders. In the annual report, you will find a discussion of the market conditions and investment strategies that significantly affected the Fund's performance during its last fiscal year.

STATEMENT OF ADDITIONAL INFORMATION (SAI)
The SAI provides more detailed information about the Fund.

The current annual and semiannual reports and the SAI are incorporated by reference into (and are thus legally a part of) this prospectus.

To receive a free copy of the latest annual or semiannual report or the SAI, or to request additional information about the Fund or other Vanguard funds, please visit www.vanguard.com or contact us as follows:

The Vanguard Group
Participant Access Center
P.O. Box 2900
Valley Forge, PA 19482-2900
Telephone: 800-523-1188
Text telephone for people with hearing impairment: 800-749-7273

INFORMATION PROVIDED BY THE SECURITIES AND EXCHANGE COMMISSION (SEC) You can review and copy information about the Fund (including the SAI) at the SEC's Public Reference Room in Washington, DC. To find out more about this public service, call the SEC at 202-551-8090. Reports and other information about the Fund are also available in the EDGAR database on the SEC's Internet site at www.sec.gov, or you can receive copies of this information, for a fee, by electronic request at the following e-mail address: publicinfo@sec.gov, or by writing the Public Reference Section, Securities and Exchange Commission, Washington, DC 20549-0102.

Fund's Investment Company Act file number: 811-07443

(C) 2008 The Vanguard Group, Inc. All rights reserved. Vanguard Marketing Corporation, Distributor.

I934 022008


VANGUARD/(R)/ MID-CAP GROWTH FUND

> PROSPECTUS

INVESTOR SHARES

February 22, 2008


[SHIP LOGO][VANGUARD/(R)/ LOGO]


This prospectus contains financial data for the Fund through the fiscal year ended October 31, 2007.

NEITHER THE SECURITIES AND EXCHANGE COMMISSION NOR ANY STATE SECURITIES COMMISSION HAS APPROVED OR DISAPPROVED OF THESE SECURITIES OR PASSED UPON THE ACCURACY OR ADEQUACY OF THIS PROSPECTUS. ANY REPRESENTATION TO THE CONTRARY IS A CRIMINAL OFFENSE.


CONTENTS

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Fund Profile 1 Investing With Vanguard 20
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More on the Fund 5 Purchasing Shares 20
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 The Fund and Vanguard 11 Redeeming Shares 23
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 Investment Advisors 11 Exchanging Shares 26
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 Dividends, Capital Gains, and 14 Frequent-Trading Limits 26
 Taxes
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 Share Price 16 Other Rules You Should Know 28
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Financial Highlights 17 Fund and Account Updates 32
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 Contacting Vanguard 34
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 Glossary of Investment Terms 36
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WHY READING THIS PROSPECTUS IS IMPORTANT
This prospectus explains the investment objective, policies, strategies, and risks associated with the Fund. To highlight terms and concepts important to mutual fund investors, we have provided Plain Talk/(R)/ explanations along the way. Reading the prospectus will help you decide whether the Fund is the right investment for you. We suggest that you keep this prospectus for future reference.


FUND PROFILE

INVESTMENT OBJECTIVE
The Fund seeks to provide long-term capital appreciation.

PRIMARY INVESTMENT STRATEGIES

The Fund invests at least 80% of its assets in common stocks of medium-size companies. In selecting investments, each advisor invests in those medium-size companies that it believes have the best prospects for future growth. The Fund uses multiple investment advisors.

PRIMARY RISKS
An investment in the Fund could lose money over short or even long periods. You should expect the Fund's share price and total return to fluctuate within a wide range, like the fluctuations of the overall stock market. The Fund's performance could be hurt by:

. Stock market risk, which is the chance that stock prices overall will decline. Stock markets tend to move in cycles, with periods of rising prices and periods of falling prices.

. Investment style risk, which is the chance that returns from mid-capitalization growth stocks will trail returns from the overall stock market. Historically, mid-cap stocks have been more volatile in price than the large-cap stocks that dominate the overall market, and they often perform quite differently. Mid-cap stocks tend to have greater volatility than large-cap stocks because, among other things, medium-size companies are more sensitive to changing economic conditions.

. Manager risk, which is the chance that poor security selection will cause the Fund to underperform relevant benchmarks or other funds with a similar investment objective.

PERFORMANCE/RISK INFORMATION
The following bar chart and table are intended to help you understand the risks of investing in the Fund.* The bar chart shows how the performance of the Fund has varied from one calendar year to another over the periods shown. The table shows how the average annual total returns compare with those of a relevant market index. Keep in mind that the Fund's past performance (before and after taxes) does not indicate how the Fund will perform in the future.

* Prior to June 29, 2002, Vanguard Mid-Cap Growth Fund was organized as Provident Investment Counsel Mid Cap Fund A (PIC Fund) and was sponsored by Provident Investment Counsel, Inc. A reorganization brought the Fund into The Vanguard Group; the investment objective, risks, and policies of the Fund remain substantially similar.

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ANNUAL TOTAL RETURNS/1/

BAR CHART
 [-60% to 120%]

 1998 26.30%
 1999 83.33%
 2000 12.96%
 2001 -25.37%
 2002 -28.54%
 2003 42.81%
 2004 11.38%
 2005 9.13%
 2006 12.72%
 2007 14.69%
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1 Return figures do not reflect the 5.75% maximum sales charge imposed on purchases of shares of the PIC Fund prior to its reorganization into the Fund on June 29, 2002. If the charge were reflected, returns would be less than those shown.

During the periods shown in the bar chart, the highest return for a calendar quarter was 56.66% (quarter ended December 31, 1999), and the lowest return for a quarter was -30.22% (quarter ended September 30, 2001).

AVERAGE ANNUAL TOTAL RETURNS FOR PERIODS ENDED DECEMBER 31, 2007
 1 Year 5 Years 10 Years
------------------------------------------------------------------------------------------------
VANGUARD MID-CAP GROWTH FUND/1/
------------------------------------------------------------------------------------------------
Return Before Taxes 14.69% 17.55% 12.09%
------------------------------------------------------------------------------------------------
Return After Taxes on Distributions 13.05 16.69 10.56
Distributions
------------------------------------------------------------------------------------------------
Return After Taxes on Distributions and
Sale of Fund Shares 10.16 15.28 10.06
------------------------------------------------------------------------------------------------
RUSSELL MIDCAP GROWTH INDEX
(reflects no deduction for fees, expenses,
or taxes) 11.43% 17.90% 7.59%
------------------------------------------------------------------------------------------------
1 Return figures do not reflect the 5.75% maximum sales charge imposed on
 purchases of shares of the PIC Fund prior to its reorganization into the Fund
 on June 29, 2002. If the charge were reflected, returns would be less than
 those shown.

Note on after-tax returns. Actual after-tax returns depend on your tax situation and may differ from those shown in the preceding table. When after-tax returns are calculated, it is assumed that the shareholder was in the highest federal marginal income tax bracket at the time of each distribution of income or capital gains or upon redemption. State and local income taxes are not reflected in the calculations. Please note that after-tax returns are not relevant for a shareholder who holds fund shares in a tax-deferred account, such as an individual retirement account or a 401(k) plan. Also, figures captioned Return After Taxes on Distributions and Sale of Fund Shares will be higher than other figures for the same period if a capital loss occurs upon redemption and results in an assumed tax deduction for the shareholder.

2

FEES AND EXPENSES

The following table describes the fees and expenses you may pay if you buy and hold shares of the Fund. As is the case with all mutual funds, transaction costs incurred by the Fund for buying and selling securities are not reflected in the table. However, these costs are reflected in the investment performance figures included in this prospectus. The expenses shown under Annual Fund Operating Expenses are based on those incurred in the fiscal year ended October 31, 2007.

SHAREHOLDER FEES
(Fees paid directly from your investment)

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Sales Charge (Load) Imposed on Purchases None
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Purchase Fee None
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Sales Charge (Load) Imposed on Reinvested Dividends None
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Redemption Fee None
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Account Service Fee (for fund account balances below $10,000) $20/Year/1/
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ANNUAL FUND OPERATING EXPENSES
(Expenses deducted from the Fund's assets)

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Management Expenses 0.53%
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12b-1 Distribution Fee None
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Other Expenses 0.03%
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Total Annual Fund Operating Expenses 0.56%
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1 If applicable, the account service fee will be collected by redeeming fund shares in the amount of $20.

The following example is intended to help you compare the cost of investing in the Fund with the cost of investing in other mutual funds. It illustrates the hypothetical expenses that you would incur over various periods if you invest $10,000 in the Fund's shares. This example assumes that the Fund provides a return of 5% a year and that operating expenses remain the same. The results apply whether or not you redeem your investment at the end of the given period.

1 Year 3 Years 5 Years 10 Years
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$57 $179 $313 $701
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THIS EXAMPLE SHOULD NOT BE CONSIDERED TO REPRESENT ACTUAL EXPENSES OR PERFORMANCE FROM THE PAST OR FOR THE FUTURE. ACTUAL FUTURE EXPENSES MAY BE HIGHER OR LOWER THAN THOSE SHOWN.

3


PLAIN TALK ABOUT FUND EXPENSES

All mutual funds have operating expenses. These expenses, which are deducted from a fund's gross income, are expressed as a percentage of the net assets of the fund. Vanguard Mid-Cap Growth Fund's expense ratio in fiscal year 2007 was 0.56%, or $5.60 per $1,000 of average net assets. The average mid-cap growth fund had expenses in 2006 of 1.56%, or $15.60 per $1,000 of average net assets (derived from data provided by Lipper Inc., which reports on the mutual fund industry). Management expenses, which are one part of operating expenses, include investment advisory fees as well as other costs of managing a fund--such as account maintenance, reporting, accounting, legal, and other administrative expenses.


PLAIN TALK ABOUT COSTS OF INVESTING

Costs are an important consideration in choosing a mutual fund. That's because you, as a shareholder, pay the costs of operating a fund, plus any transaction costs incurred when the fund buys or sells securities. These costs can erode a substantial portion of the gross income or the capital appreciation a fund achieves. Even seemingly small differences in expenses can, over time, have a dramatic effect on a fund's performance.

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ADDITIONAL INFORMATION

As of October 31, 2007
--------------------------------------------------------------------------------
Net Assets $1.3 billion
--------------------------------------------------------------------------------
Investment Advisors . Chartwell Investment Partners, L.P., Berwyn, Pa.,
 since 2006

 . William Blair & Company, L.L.C., Chicago, Ill.,
 since 2006
--------------------------------------------------------------------------------
Dividends and Capital Distributed annually in December
Gains
--------------------------------------------------------------------------------
Inception Date December 31, 1997
--------------------------------------------------------------------------------
Suitable for IRAs Yes
--------------------------------------------------------------------------------
Minimum Initial $10,000; $3,000 for IRAs and most custodial accounts
Investment for minors
--------------------------------------------------------------------------------
Newspaper Abbreviation MidCpGro
--------------------------------------------------------------------------------
Vanguard Fund Number 301
--------------------------------------------------------------------------------
CUSIP Number 921946307
--------------------------------------------------------------------------------
Ticker Symbol VMGRX
--------------------------------------------------------------------------------

MORE ON THE FUND

This prospectus describes the primary risks you would face as a Fund shareholder. It is important to keep in mind one of the main axioms of investing: The higher the risk of losing money, the higher the potential reward. The reverse, also, is generally true: The lower the risk, the lower the potential reward. As you consider an investment in any mutual fund, you should take into account your personal tolerance for fluctuations in the securities markets. Look for this FLAG LOGO symbol throughout the prospectus. It is used to mark detailed information about the more significant risks that you would confront as a Fund shareholder.

The following sections explain the primary investment strategies and policies that the Fund uses in pursuit of its objective. The Fund's board of trustees, which oversees the Fund's management, may change investment strategies or policies in the interest of shareholders without a shareholder vote, unless those strategies or policies are designated as fundamental. Note that the Fund's investment objective is not fundamental and may be changed without a shareholder vote.

MARKET EXPOSURE

The Fund invests at least 80% of its assets primarily in common stocks of medium-size companies. Market capitalizations are within the capitalization range of the

5

companies included in the Russell Midcap Growth Index ($835 million to $31.1 billion as of October 31, 2007). The Fund may change its 80% policy only upon 60 days' notice to shareholders. Additionally, in selecting investments, each advisor invests in those medium-size companies that it believes have the best prospects for future growth. However, the Fund has the flexibility to invest the balance of its assets in common stocks with other market capitalizations and in other security types.


PLAIN TALK ABOUT GROWTH FUNDS AND VALUE FUNDS

Growth investing and value investing are two styles employed by stock-fund managers. Growth funds generally focus on stocks of companies believed to have above-average potential for growth in revenue, earnings, cash flow, or other similar criteria. These stocks typically have low dividend yields and above-average prices in relation to such measures as earnings and book value. Value funds typically emphasize stocks whose prices are below average in relation to those measures; these stocks often have above-average dividend yields. Growth and value stocks have historically produced similar long-term returns, though each category has periods when it outperforms the other.

FLAG LOGO
THE FUND IS SUBJECT TO INVESTMENT STYLE RISK, WHICH IS THE CHANCE THAT RETURNS FROM MID-CAPITALIZATION GROWTH STOCKS WILL TRAIL RETURNS FROM THE OVERALL STOCK MARKET. HISTORICALLY, MID-CAP STOCKS HAVE BEEN MORE VOLATILE IN PRICE THAN THE LARGE-CAP STOCKS THAT DOMINATE THE OVERALL MARKET, AND THEY OFTEN PERFORM QUITE DIFFERENTLY. MID-CAP STOCKS TEND TO HAVE GREATER VOLATILITY THAN LARGE-CAP STOCKS BECAUSE, AMONG OTHER THINGS, MEDIUM-SIZE COMPANIES ARE MORE SENSITIVE TO CHANGING ECONOMIC CONDITIONS.

Stocks of publicly traded companies and funds that invest in stocks are often classified according to market value, or market capitalization. These classifications typically include small-cap, mid-cap, and large-cap. It's important to understand that, for both companies and stock funds, market-capitalization ranges change over time. Also, interpretations of size vary, and there are no "official" definitions of small-, mid-, and large-cap, even among Vanguard fund advisors. The asset-weighted median market capitalization of the Fund as of October 31, 2007, was $5 billion.

FLAG LOGO
THE FUND IS SUBJECT TO STOCK MARKET RISK, WHICH IS THE CHANCE THAT STOCK PRICES OVERALL WILL DECLINE. STOCK MARKETS TEND TO MOVE IN CYCLES, WITH PERIODS OF RISING PRICES AND PERIODS OF FALLING PRICES.

To illustrate the volatility of stock prices, the following table shows the best, worst, and average annual total returns for the U.S. stock market over various periods as measured by the Standard & Poor's 500 Index, a widely used barometer of market

6

activity. (Total returns consist of dividend income plus change in market price.) Note that the returns shown do not include the costs of buying and selling stocks or other expenses that a real-world investment portfolio would incur.

U.S. STOCK MARKET RETURNS
(1926-2007)

 1 Year 5 Years 10 Years 20 Years
----------------------------------------------------------------
Best 54.2% 28.6% 19.9% 17.8%
----------------------------------------------------------------
Worst -43.1 -12.4 -0.8 3.1
----------------------------------------------------------------
Average 12.2 10.4 11.1 11.4
----------------------------------------------------------------

The table covers all of the 1-, 5-, 10-, and 20-year periods from 1926 through 2007. You can see, for example, that although the average return on common stocks for all of the 5-year periods was 10.4%, average returns for individual 5-year periods ranged from -12.4% (from 1928 through 1932) to 28.6% (from 1995 through 1999). These average returns reflect past performance of common stocks; you should not regard them as an indication of future performance of either the stock market as a whole or the Fund in particular.

SECURITY SELECTION
The Fund uses multiple investment advisors. Each advisor independently selects and maintains a portfolio of common stocks for the Fund.

These advisors employ active investment management methods, which means that securities are bought and sold according to the advisors' evaluations of companies and their financial prospects, the prices of the securities, and the stock market and the economy in general. Each advisor will sell a security when it is no longer as attractive as an alternative investment.

Chartwell Investment Partners (Chartwell), which manages approximately 50% of the Fund's assets, invests in companies that demonstrate strong earnings-per-share growth and have strong competitive positions and products, while serving a meaningful customer base. Chartwell will invest opportunistically when stocks are attractively valued, yet it will concentrate holdings in those companies best positioned for rapid growth, all with an intermediate-term time horizon in mind.

Chartwell's research process is "bottom-up" driven. Chartwell uses analysis to identify companies in the mid-cap range with under appreciated growth potential, trading at attractive absolute and relative valuations. The result is a portfolio of 60 to 70 stocks for Chartwell.

William Blair & Company, L.L.C. (William Blair & Company), which manages approximately 50% of the Fund's assets, employs a fundamental, bottom-up stock

7

selection process based on the market-cap range of the Russell Midcap Growth Index. William Blair & Company provides a concentrated portfolio (approximately 60 stocks) of high-quality growth stocks of companies that the advisor believes have superior, long-term earnings growth potential, combined with a proven and sustainable competitive advantage from market/brand position, technology position, or a unique asset base. William Blair & Company focuses on growth-oriented investing, fundamental research, and the depth of its investment team, which are its key strengths.

The Vanguard Group (Vanguard), manages a small portion of the Fund's assets to facilitate cash flows to and from the Fund's advisors. Vanguard typically invests its portion of the Fund's assets in stock index futures and/or shares of exchange-traded funds. For more details, see "Other Investment Policies and Risks."

The Fund is generally managed without regard to tax ramifications.

FLAG LOGO
THE FUND IS SUBJECT TO MANAGER RISK, WHICH IS THE CHANCE THAT POOR SECURITY SELECTION WILL CAUSE THE FUND TO UNDERPERFORM RELEVANT BENCHMARKS OR OTHER

FUNDS WITH A SIMILAR INVESTMENT OBJECTIVE.

OTHER INVESTMENT POLICIES AND RISKS

Although the Fund typically does not make significant investments in foreign securities, it reserves the right to invest up to 25% of its assets this way. Foreign securities may be traded on U.S. or foreign markets. To the extent that it owns foreign securities, the Fund is subject to country risk and currency risk. Country risk is the chance that world events--such as political upheaval, financial troubles, or natural disasters--will adversely affect the value of securities issued by companies in foreign countries. In addition, the prices of foreign stocks and the prices of U.S. stocks have, at times, moved in opposite directions. Currency risk is the chance that the value of a foreign investment, measured in U.S. dollars, will decrease because of unfavorable changes in currency exchange rates.

The Fund may invest, to a limited extent, in derivatives. Generally speaking, a derivative is a financial contract whose value is based on the value of a financial asset (such as a stock, bond, or currency), a physical asset (such as gold), or a market index (such as the S&P 500 Index). The Fund will not use derivatives for speculation or for the purpose of leveraging (magnifying) investment returns.

The Fund may enter into forward foreign currency exchange contracts, which are types of derivative contracts. A forward foreign currency exchange contract is an agreement to buy or sell a country's currency at a specific price on a specific date, usually 30, 60, or 90 days in the future. In other words, the contract guarantees an exchange rate on a given date. Managers of funds that invest in foreign securities use these contracts to guard against sudden, unfavorable changes in the U.S. dollar/foreign currency exchange

8

rates. These contracts, however, will not prevent the Fund's securities from falling in value during foreign market downswings.

Vanguard typically invests a small portion of the Fund's assets in stock index futures and/or shares of exchange-traded funds (ETFs), including ETF Shares issued by Vanguard stock index funds. Stock index futures and ETFs provide returns similar to those of common stocks. Vanguard may purchase futures or ETFs when doing so will reduce the Fund's transaction costs or add value because the instruments are favorably priced. Vanguard receives no additional revenue from investing Fund assets in ETF Shares of other Vanguard funds. Fund assets invested in ETF Shares are excluded when allocating to the Fund its share of the costs of Vanguard operations.

CASH MANAGEMENT

The Fund's daily cash balance may be invested in one or more Vanguard CMT Funds, which are very low-cost money market funds. When investing in a Vanguard CMT Fund, the Fund bears its proportionate share of the at-cost expenses of the CMT Fund in which it invests.

TEMPORARY INVESTMENT MEASURES

The Fund may temporarily depart from its normal investment policies and strategies when doing so is believed to be in the Fund's best interest, so long as the alternative is consistent with the Fund's investment objective. For instance, the Fund may invest beyond the normal limits in derivatives or ETFs that are consistent with the Fund's objective when those instruments are more favorably priced or provide needed liquidity, as might be the case when the Fund is transitioning assets from one advisor to another or receives large cash flows that it cannot prudently invest immediately.

In addition, the Fund may take temporary defensive positions that are inconsistent with its normal investment policies and strategies--for instance, by allocating substantial assets to cash, commercial paper, or other less volatile instruments--in response to adverse or unusual market, economic, political, or other conditions. In doing so, the Fund may succeed in avoiding losses but may otherwise fail to achieve its investment objective.

FREQUENT TRADING OR MARKET-TIMING
BACKGROUND. Some investors try to profit from strategies involving frequent trading of mutual fund shares, such as market-timing. For funds holding foreign securities, investors may try to take advantage of an anticipated difference between the price of the fund's shares and price movements in overseas markets, a practice also known as time-zone arbitrage. Investors also may try to engage in frequent trading of funds holding investments such as small-cap stocks and high-yield bonds. As money is shifted into and out of a fund by a shareholder engaging in frequent trading, a fund

9

incurs costs for buying and selling securities, resulting in increased brokerage and administrative costs. These costs are borne by all fund shareholders, including the long-term investors who do not generate the costs. In addition, frequent trading may interfere with an advisor's ability to efficiently manage the fund.

POLICIES TO ADDRESS FREQUENT TRADING. The Vanguard funds (other than money market funds, short-term bond funds, and Vanguard ETF(TM) Shares) do not knowingly accommodate frequent trading. The board of trustees of each Vanguard fund has adopted policies and procedures reasonably designed to detect and discourage frequent trading and, in some cases, to compensate the fund for the costs associated with it. Although there is no assurance that Vanguard will be able to detect or prevent frequent trading or market-timing in all circumstances, the following policies have been adopted to address these issues:

. Each Vanguard fund reserves the right to reject any purchase request--including exchanges from other Vanguard funds--without notice and regardless of size. For example, a purchase request could be rejected if Vanguard determines that such purchase may negatively affect a fund's operation or performance or because of a history of frequent trading by the investor.

. Each Vanguard fund (other than money market funds, short-term bond funds, and ETF Shares) generally prohibits, except as otherwise noted in the INVESTING WITH VANGUARD section, an investor's purchases or exchanges into a fund account for 60 calendar days after the investor has redeemed or exchanged out of that fund account.

. Certain Vanguard funds charge shareholders purchase and/or redemption fees on transactions.

See the INVESTING WITH VANGUARD section of this prospectus for further details on Vanguard's transaction policies.

Each fund (other than money market funds), in determining its net asset value, will, when appropriate, use fair-value pricing as described in the SHARE PRICE section. Fair-value pricing may reduce or eliminate the profitability of certain frequent-trading strategies.

DO NOT INVEST WITH VANGUARD IF YOU ARE A MARKET-TIMER.

TURNOVER RATE

Although the Fund normally seeks to invest for the long term, it may sell securities regardless of how long they have been held. The Financial Highlights section of this prospectus shows historical turnover rates for the Fund. A turnover rate of 100%, for example, would mean that the Fund had sold and replaced securities valued at 100% of its net assets within a one-year period. The average turnover rate for mid-cap growth funds was approximately 116%, as reported by Morningstar, Inc., on October 31, 2007.

10


PLAIN TALK ABOUT TURNOVER RATE

Before investing in a mutual fund, you should review its turnover rate. This gives an indication of how transaction costs, which are not included in the fund's expense ratio, could affect the fund's future returns. In general, the greater the volume of buying and selling by the fund, the greater the impact that brokerage commissions and other transaction costs will have on its return. Also, funds with high turnover rates may be more likely to generate capital gains that must be distributed to shareholders as taxable income.

THE FUND AND VANGUARD

The Fund is a member of The Vanguard Group, a family of 37 investment companies with more than 150 funds holding assets in excess of $1.2 trillion. All of the funds that are members of The Vanguard Group share in the expenses associated with administrative services and business operations, such as personnel, office space, equipment, and advertising.

Vanguard also provides marketing services to the funds. Although shareholders do not pay sales commissions or 12b-1 distribution fees, each fund (or in the case of a fund with multiple share classes, each share class of the fund) pays its allocated share of The Vanguard Group's marketing costs.


PLAIN TALK ABOUT VANGUARD'S UNIQUE CORPORATE STRUCTURE

The Vanguard Group is truly a mutual mutual fund company. It is owned jointly by the funds it oversees and thus indirectly by the shareholders in those funds. Most other mutual funds are operated by management companies that may be owned by one person, by a group of individuals, or by investors who own the management company's stock. The management fees charged by these companies include a profit component over and above the companies' cost of providing services. By contrast, Vanguard provides services to its member funds on an at-cost basis, with no profit component, which helps to keep the funds' expenses low.

INVESTMENT ADVISORS

The Fund uses a multimanager approach. Each advisor independently manages its assigned portion of the Fund's assets, subject to the supervision and oversight of Vanguard and the board of trustees. The Fund's board of trustees designates the

11

proportion of Fund assets to be managed by each advisor and may change these proportions at any time.

. Chartwell Investment Partners, L.P., 1235 Westlakes Drive, Suite 400, Berwyn, PA 19312, is an investment advisory firm founded in 1997. As of October 31, 2007, Chartwell managed approximately $6.2 billion in assets.

. William Blair & Company, L.L.C., 222 West Adams Street, Chicago, IL 60606, is an independently owned full-service investment management firm founded in 1935. The firm manages assets for mutual funds, public and private employee benefit plans, foundations, endowments, institutions, and separate accounts. As of October 31, 2007, William Blair & Company managed approximately $49.5 billion in assets.

The Fund pays each of its investment advisors on a quarterly basis. For each advisor, the quarterly fee is based on certain annual percentage rates applied to the average daily net assets managed by the advisor for each quarter. In addition, the quarterly fees paid to each advisor are increased or decreased based on the advisor's performance compared with that of a benchmark index. For these purposes, the cumulative total return of the Chartwell portion of the Fund over a 36-month period, and the William Blair portion of the Fund over a 60-month period, are compared with the cumulative total return of the Russell Midcap Growth Index over the same period.

For the fiscal year ended October 31, 2007, the advisory fee represented an effective annual rate of 0.24% of the Fund's average net assets before a performance-based increase of 0.03%.

Under the terms of an SEC exemption, the Fund's board of trustees may, without prior approval from shareholders, change the terms of an advisory agreement or hire a new investment advisor--either as a replacement for an existing advisor or as an additional advisor. Any significant change in the Fund's advisory arrangements will be communicated to shareholders in writing. In addition, as the Fund's sponsor and overall manager, The Vanguard Group may provide investment advisory services to the Fund, on an at-cost basis, at any time. Vanguard may also recommend to the board of trustees that an advisor be hired, terminated, or replaced, or that the terms of an existing advisory agreement be revised.

For a discussion of why the board of trustees approved the Fund's investment advisory agreements, see the most recent annual report to shareholders covering the fiscal year ended October 31.

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PLAIN TALK ABOUT THE FUND'S PORTFOLIO MANAGERS

The managers primarily responsible for the day-to-day management of the Fund are:

EDWARD N. ANTOIAN, CFA, Managing Partner and one of the Founders of Chartwell in 1997. He has managed equity funds since 1984 and has overseen management of the Chartwell portion of the Fund since 2006. Education: B.S., State University of New York; M.B.A., University of Pennsylvania.

MARK J. CUNNEEN, CPA, Senior Portfolio Manager at Chartwell. He has worked in investment management since 1986; has managed equity funds since 1992; has been with Chartwell since 2003; and has served as senior portfolio manager of the Chartwell portion of the Fund since 2006. Education: B.S., University of Notre Dame; M.B.A., University of Pennsylvania.

HARVEY H. BUNDY, CFA, Principal at William Blair & Company. He has worked in investment management at William Blair & Company since 1968; has managed equity funds since 1998; is a co-manager of William Blair & Company's Mid-Cap Growth Team and also serves on the Small-Mid Cap Growth Team, which he co-founded in 1998; and has co-managed the William Blair & Company portion of the Fund since 2006. Education: A.B., Yale University; M.B.A., Amos Tuck School of Business Administration at Dartmouth.

ROBERT C. LANPHIER, Principal at William Blair & Company. He has worked in investment management at William Blair & Company since 1987; has managed equity funds since 1996; co-founded William Blair & Company's Mid-Cap Growth Team strategy in 1997 and the Small-Mid Cap Growth Team strategy in 1998, and currently serves as a portfolio manager on both strategies; and has co-managed the William Blair & Company portion of the Fund since 2006. Education: B.S., Purdue University; M.B.A., Kellogg School of Management at Northwestern University.

DAVID RICCI, CFA, Principal at William Blair & Company. He has worked in investment management at William Blair & Company since 1994; is a comanager of William Blair & Company's Mid-Cap Growth Team; previously worked for 11 years as an analyst in the Research Department; has managed equity funds since 2005; and has co-managed the William Blair & Company portion of the Fund since 2006. Education: Sc.B., Brown University; M.B.A., Harvard Business School.

The Statement of Additional Information provides information about each portfolio manager's compensation, other accounts under management, and ownership of securities in the Fund.

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DIVIDENDS, CAPITAL GAINS, AND TAXES

FUND DISTRIBUTIONS
The Fund distributes to shareholders virtually all of its net income (interest and dividends, less expenses) as well as any net capital gains realized from the sale of its holdings. Distributions generally occur annually in December. You can receive distributions of income or capital gains in cash, or you can have them automatically reinvested in more shares of the Fund.


PLAIN TALK ABOUT DISTRIBUTIONS

As a shareholder, you are entitled to your portion of a fund's income from interest and dividends as well as gains from the sale of investments. Income consists of both the dividends that the fund earns from any stock holdings and the interest it receives from any money market and bond investments. Capital gains are realized whenever the fund sells securities for higher prices than it paid for them. These capital gains are either short-term or long-term, depending on whether the fund held the securities for one year or less or for more than one year. You receive the fund's earnings as either a dividend or capital gains distribution.

BASIC TAX POINTS
Vanguard will send you a statement each year showing the tax status of all your distributions. In addition, investors in taxable accounts should be aware of the following basic tax points:

. Distributions are taxable to you for federal income tax purposes, whether or not you reinvest these amounts in additional Fund shares.

. Distributions declared in December--if paid to you by the end of January--are taxable for federal income tax purposes as if received in December.

. Any dividend and short-term capital gains distributions that you receive are taxable to you as ordinary income for federal income tax purposes. If you are an individual and meet certain holding-period requirements with respect to your Fund shares, you may be eligible for reduced federal tax rates on "qualified dividend income," if any, distributed by the Fund.

. Any distributions of net long-term capital gains are taxable to you as long-term capital gains for federal income tax purposes, no matter how long you've owned shares in the Fund.

. Capital gains distributions may vary considerably from year to year as a result of the Fund's normal investment activities and cash flows.

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. A sale or exchange of Fund shares is a taxable event. This means that you may have a capital gain to report as income, or a capital loss to report as a deduction, when you complete your federal income tax return.

. Dividend and capital gains distributions that you receive, as well as your gains or losses from any sale or exchange of Fund shares, may be subject to state and local income taxes.


PLAIN TALK ABOUT "BUYING A DIVIDEND"

Unless you are investing through a tax-deferred retirement account (such as an IRA), you should consider avoiding a purchase of fund shares shortly before the fund makes a distribution, because doing so can cost you money in taxes. This is known as "buying a dividend." For example: On December 15, you invest $5,000, buying 250 shares for $20 each. If the fund pays a distribution of $1 per share on December 16, its share price will drop to $19 (not counting market change). You still have only $5,000 (250 shares x $19 = $4,750 in share value, plus 250 shares x $1 = $250 in distributions), but you owe tax on the $250 distribution you received--even if you reinvest it in more shares. To avoid "buying a dividend," check a fund's distribution schedule before you invest.

GENERAL INFORMATION
BACKUP WITHHOLDING. By law, Vanguard must withhold 28% of any taxable distributions or redemptions from your account if you do not:

. Provide us with your correct taxpayer identification number;

. Certify that the taxpayer identification number is correct; and

. Confirm that you are not subject to backup withholding.

Similarly, Vanguard must withhold taxes from your account if the IRS instructs us to do so.

FOREIGN INVESTORS. Vanguard funds generally are not sold outside the United States, except to certain qualified investors. If you reside outside the United States, please consult our website at www.vanguard.com and review "Non-U.S. investors." Foreign investors should be aware that U.S. withholding and estate taxes may apply to any investments in Vanguard funds.

INVALID ADDRESSES. If a dividend or capital gains distribution check mailed to your address of record is returned as undeliverable, Vanguard will automatically reinvest all future distributions until you provide us with a valid mailing address.

15

TAX CONSEQUENCES. This prospectus provides general tax information only. If you are investing through a tax-deferred retirement account, such as an IRA, special tax rules apply. Please consult your tax advisor for detailed information about a fund's tax consequences for you.

SHARE PRICE

The Fund's share price, called its net asset value, or NAV, is calculated each business day as of the close of regular trading on the New York Stock Exchange, generally 4 p.m., Eastern time. NAV per share is computed by dividing the net assets of the Fund by the number of Fund shares outstanding. On holidays or other days when the Exchange is closed, the NAV is not calculated, and the Fund does not transact purchase or redemption requests. However, on those days the value of the Fund's assets may be affected to the extent that the Fund holds foreign securities that trade on foreign markets that are open.

Stocks held by a Vanguard fund are valued at their market value when reliable market quotations are readily available. Certain short-term debt instruments used to manage a fund's cash are valued on the basis of amortized cost. The values of any foreign securities held by a fund are converted into U.S. dollars using an exchange rate obtained from an independent third party. The values of any mutual fund shares held by a fund are based on the NAVs of the shares. The values of any ETF or closed-end fund shares held by a fund are based on the market value of the shares.

When reliable market quotations are not readily available, securities are priced at their fair value (the amount that the owner might reasonably expect to receive upon the current sale of a security). A fund also will use fair-value pricing if the value of a security it holds has been materially affected by events occurring before the fund's pricing time but after the close of the primary markets or exchanges on which the security is traded. This most commonly occurs with foreign securities, which may trade on foreign exchanges that close many hours before the fund's pricing time. Intervening events might be company-specific (e.g., earnings report, merger announcement); country-specific (e.g., natural disaster, economic or political news, act of terrorism, interest rate change); or global. Intervening events include price movements in U.S. markets that are deemed to affect the value of foreign securities. Fair-value pricing may be used for domestic securities--for example, if (1) trading in a security is halted and does not resume before the fund's pricing time or if a security does not trade in the course of a day, and (2) the fund holds enough of the security that its price could affect the fund's NAV.

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Fair-value prices are determined by Vanguard according to procedures adopted by the board of trustees. When fair-value pricing is employed, the prices of securities used by a fund to calculate its NAV may differ from quoted or published prices for the same securities.

Vanguard fund share prices can be found daily in the mutual fund listings of most major newspapers under various "Vanguard" headings.

FINANCIAL HIGHLIGHTS

The following financial highlights table is intended to help you understand the Fund's financial performance for the periods shown, and certain information reflects financial results for a single Fund share. The total returns in the table represent the rate that an investor would have earned or lost each period on an investment in the Fund (assuming reinvestment of all distributions). This information has been derived from the financial statements audited by PricewaterhouseCoopers LLP, an independent registered public accounting firm, whose report--along with the Fund's financial statements--is included in the Fund's most recent annual report to shareholders. To receive a free copy of the latest annual or semiannual report, you may access a report online at www.vanguard.com, or you may contact Vanguard by telephone or by mail.

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PLAIN TALK ABOUT HOW TO READ THE FINANCIAL HIGHLIGHTS TABLE

The Fund began fiscal year 2007 with a net asset value (price) of $19.12 per share. During the year, the Fund earned $0.044 per share from investment income (interest and dividends) and $4.455 per share from investments that had appreciated in value or that were sold for higher prices than the Fund paid for them.

Shareholders received $2.719 per share in the form of dividend and capital gains distributions. A portion of each year's distributions may come from the prior year's income or capital gains.

The share price at the end of the year was $20.90, reflecting earnings of $4.499 per share and distributions of $2.719 per share. This was an increase of $1.78 per share (from $19.12 at the beginning of the year to $20.90 at the end of the year). For a shareholder who reinvested the distributions in the purchase of more shares, the total return was 26.39% for the year.

As of October 31, 2007, the Fund had approximately $1.3 billion in net assets. For the year, the expense ratio was 0.56% ($5.60 per $1,000 of net assets), and the net investment income amounted to 0.27% of its average net assets. The Fund sold and replaced securities valued at 70% of its net assets.

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MID-CAP GROWTH FUND
 Year Ended October 31,
 ------------------------------------------------------------------
 2007 2006 2005 2004 2003
--------------------------------------------------------------------------------------------------------------------------------
NET ASSET VALUE, BEGINNING OF PERIOD $19.12 $16.58 $14.28 $14.22 $10.34
--------------------------------------------------------------------------------------------------------------------------------
INVESTMENT OPERATIONS
--------------------------------------------------------------------------------------------------------------------------------
Net Investment Income (Loss) .044 .055 .00 (.01) (.01)
--------------------------------------------------------------------------------------------------------------------------------
Net Realized and Unrealized Gain (Loss) 4.455 2.490 2.30 .07 3.89
on Investments
--------------------------------------------------------------------------------------------------------------------------------
Total from Investment Operations 4.499 2.545 2.30 .06 3.88
--------------------------------------------------------------------------------------------------------------------------------
DISTRIBUTIONS
--------------------------------------------------------------------------------------------------------------------------------
Dividends from Net Investment Income (.044) (.005) -- -- --
--------------------------------------------------------------------------------------------------------------------------------
Distributions from Realized Capital Gains (2.675) -- -- -- --
--------------------------------------------------------------------------------------------------------------------------------
Total Distributions (2.719) (.005) -- -- --
--------------------------------------------------------------------------------------------------------------------------------
NET ASSET VALUE, END OF PERIOD $20.90 $19.12 $16.58 $14.28 $14.22
--------------------------------------------------------------------------------------------------------------------------------

TOTAL RETURN 26.39% 15.35% 16.11% 0.42% 37.52%
--------------------------------------------------------------------------------------------------------------------------------
RATIOS/SUPPLEMENTAL DATA
--------------------------------------------------------------------------------------------------------------------------------
Net Assets, End of Period (Millions) $1,289 $793 $562 $442 $247
--------------------------------------------------------------------------------------------------------------------------------
Ratio of Total Expenses to Average Net Assets/1/ 0.56% 0.50% 0.44% 0.45% 0.63%
--------------------------------------------------------------------------------------------------------------------------------
Ratio of Net Investment Income (Loss) to Average 0.27% 0.26% 0.01% (0.05%) (0.18%)
Net Assets
--------------------------------------------------------------------------------------------------------------------------------
Turnover Rate 70% 159% 80% 102% 106%
--------------------------------------------------------------------------------------------------------------------------------
1 Includes performance-based investment advisory fee increases (decreases) of 0.03% for 2007, (0.04%) for 2006, (0.09%) for
 2005, (0.05%) for 2004, and (0.06%) for 2003.

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INVESTING WITH VANGUARD

This section of the prospectus explains the basics of doing business with Vanguard. Be sure to carefully read each topic that pertains to your relationship with Vanguard. Vanguard reserves the right to change the following policies, without prior notice to shareholders. Please call or check online for current information.

Each fund you hold in an account is a separate "fund account." For example, if you hold three funds in a nonretirement account titled in your own name, two funds in a nonretirement account titled jointly with your spouse, and one fund in an individual retirement account, you have six fund accounts--and this is true even if you hold the same fund in multiple accounts.

PURCHASING SHARES

Vanguard reserves the right, without prior notice, to increase or decrease the minimum amount required to open or maintain a fund account, or to add to an existing fund account.

Investment minimums may differ for certain categories of investors.

ACCOUNT MINIMUMS
TO OPEN AND MAINTAIN AN ACCOUNT. $10,000 for regular accounts, $3,000 for IRAs and most custodial accounts.

TO ADD TO AN EXISTING ACCOUNT. $50 by Automatic Investment Plan; $100 by check, exchange, wire, or electronic bank transfer (other than Automatic Investment Plan).

HOW TO INITIATE A PURCHASE REQUEST
Be sure to check Exchanging Shares, Frequent-Trading Limits, and Other Rules You Should Know before placing your purchase request.

ONLINE. You may open certain types of accounts, request an electronic bank transfer, and make an exchange (using the proceeds from the redemption of shares from one Vanguard fund to simultaneously purchase shares of a different Vanguard fund) through our website at www.vanguard.com if you are a registered user.

BY TELEPHONE. You may call Vanguard to begin the account registration process or request that the account-opening forms be sent to you. You may also request a purchase of shares by wire, by electronic bank transfer, or by an exchange. See Contacting Vanguard.

BY MAIL. You may send your account registration form and check to open a new fund account at Vanguard. To add to an existing fund account, you may send your check with an Invest-by-Mail form (from your account statement) or with a deposit slip (available

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online). You may also send a written request to Vanguard to add to a fund account or to make an exchange. For a list of Vanguard addresses, see Contacting Vanguard.

HOW TO PAY FOR A PURCHASE
BY ELECTRONIC BANK TRANSFER. You may purchase shares of a Vanguard fund through an electronic transfer of money held in a designated bank account. To establish the electronic bank transfer option on an account, you must designate a bank account online, complete a special form, or fill out the appropriate section of your account registration form. After the option is set up on your account, you can purchase shares by electronic bank transfer on a regular schedule (Automatic Investment Plan) or whenever you wish. Your purchase request can be initiated online, by telephone, or by mail.

BY WIRE. Wiring instructions vary for different types of purchases. Please call Vanguard for instructions and policies on purchasing shares by wire. See Contacting Vanguard.

BY CHECK. You may send a check to make initial or additional purchases to your fund account. Also see How to Initiate a Purchase Request: By mail. Make your check payable to Vanguard and include the appropriate fund number (e.g., Vanguard--301). See Contacting Vanguard.

BY EXCHANGE. You may purchase shares of a Vanguard fund using the proceeds from the simultaneous redemption of shares from another Vanguard fund. You may initiate an exchange online (if you are a registered user of Vanguard.com), by telephone, or by mail. See Exchanging Shares.

TRADE DATE

The trade date for any purchase request received in good order will depend on the day and time Vanguard receives your request, the manner in which you are paying, and the type of fund you are purchasing. Your purchase will be executed using the fund's NAV as calculated on the trade date. NAVs are calculated only on days the New York Stock Exchange (NYSE) is open for trading (a business day).

For purchases by CHECK into all funds other than money market funds, and for PURCHASES BY EXCHANGES or WIRE into all funds: If the purchase request is received by Vanguard on a business day before the close of regular trading on the NYSE (generally 4 p.m., Eastern time), the trade date will be the same day. If the purchase request is received on a business day after the close of regular trading on the NYSE, or on a nonbusiness day, the trade date will be the next business day.

For purchases by CHECK into money market funds: If the purchase request is received by Vanguard on a business day before the close of regular trading on the NYSE (generally 4 p.m., Eastern time), the trade date will be the next business day. If the purchase request is received on a business day after the close of regular trading on the NYSE, or on a nonbusiness day, the trade date will be the second business day

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following the day Vanguard receives the purchase request. Because money market instruments must be purchased with federal funds and it takes a money market mutual fund one business day to convert check proceeds into federal funds, the trade date will be one business day later than for other funds.

For purchases by electronic bank transfer using an AUTOMATIC INVESTMENT PLAN:
Your trade date generally will be one business day before the date you designated for withdrawal from your bank account.

For purchases by ELECTRONIC BANK TRANSFER not using an Automatic Investment Plan: If the purchase request is received by Vanguard on a business day before 10 p.m., Eastern time, the trade date will be the next business day. If the purchase request is received on a business day after 10 p.m., Eastern time, or on a nonbusiness day, the trade date will be the second business day following the day Vanguard receives the request.

If your purchase request is not accurate and complete, it may be rejected. See Other Rules You Should Know--Good Order.

For further information about purchase transactions, consult our website at www.vanguard.com or see Contacting Vanguard

OTHER PURCHASE RULES YOU SHOULD KNOW

CHECK PURCHASES. All purchase checks must be written in U.S. dollars and must be drawn on a U.S. bank. Vanguard does not accept cash, traveler's checks, or money orders. In addition, Vanguard may refuse "starter checks" and checks that are not made payable to Vanguard.

NEW ACCOUNTS. We are required by law to obtain from you certain personal information that we will use to verify your identity. If you do not provide the information, we may not be able to open your account. If we are unable to verify your identity, Vanguard reserves the right, without prior notice, to close your account or take such other steps as we deem reasonable.

REFUSED OR REJECTED PURCHASE REQUESTS. Vanguard reserves the right to stop selling fund shares or to reject any purchase request at any time and without prior notice, including, but not limited to, purchases requested by exchange from another Vanguard fund. This also includes the right to reject any purchase request because of a history of frequent trading by the investor or because the purchase may negatively affect a fund's operation or performance.

LARGE PURCHASES. Please call Vanguard before attempting to invest a large dollar amount.

NO CANCELLATIONS. Vanguard will not accept your request to cancel any purchase request once processing has begun. Please be careful when placing a purchase request.

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REDEEMING SHARES

HOW TO INITIATE A REDEMPTION REQUEST
Be sure to check Exchanging Shares, Frequent-Trading Limits, and Other Rules You Should Know before placing your redemption request.

ONLINE. You may redeem shares, request an electronic bank transfer, and make an exchange (the purchase of shares of one Vanguard fund using the proceeds of a simultaneous redemption from another Vanguard fund) through our website at www.vanguard.com if you are a registered user.

BY TELEPHONE. You may call Vanguard to request a redemption of shares by wire, by electronic bank transfer, by check, or by an exchange. See Contacting Vanguard.

BY MAIL. You may send a written request to Vanguard to redeem from a fund account or to make an exchange. The request must be in good order. See Contacting Vanguard.

HOW TO RECEIVE REDEMPTION PROCEEDS

BY ELECTRONIC BANK TRANSFER. You may have the proceeds of a fund redemption sent directly to a designated bank account. To establish the electronic bank transfer option, you must designate a bank account online, complete a special form, or fill out the appropriate section of your account registration form. After the option is set up on your account, you can then redeem shares by electronic bank transfer on a regular schedule (Automatic Withdrawal Plan--$50 minimum) or whenever you wish ($100 minimum). Your transaction can be initiated online, by telephone, or by mail if your request is in good order.

BY WIRE. When redeeming from a money market fund or a bond fund, you may instruct Vanguard to wire your redemption proceeds ($1,000 minimum) to a previously designated bank account. Wire redemptions generally are not available for Vanguard's balanced or stock funds. The wire redemption option is not automatic; you must designate a bank account online, complete a special form, or fill out the appropriate section of your account registration form. Vanguard charges a $5 fee for wire redemptions under $5,000.

BY EXCHANGE. You may have the proceeds of a Vanguard fund redemption invested directly in shares of another Vanguard fund. You may initiate an exchange online (if you are a registered user of Vanguard.com), by telephone, or by mail.

BY CHECK. If you have not chosen another redemption method, Vanguard will mail you a redemption check, normally within two business days of your trade date.

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TRADE DATE
The trade date for any redemption request received in good order will depend on the day and time Vanguard receives your request and the manner in which you are redeeming. Your redemption will be executed using the fund's NAV as calculated on the trade date. NAVs are calculated only on days that the NYSE is open for trading (a business day.)

For redemptions by CHECK, EXCHANGE, OR WIRE: If the redemption request is received by Vanguard on a business day before the close of regular trading on the NYSE (generally 4 p.m., Eastern time), the trade date will be the same day. If the redemption request is received on a business day after the close of regular trading on the NYSE, or on a nonbusiness day, the trade date will be on the next business day.

. Note on timing of wire redemptions from money market funds: For telephone requests received by Vanguard on a business day before 10:45 a.m., Eastern time (2 p.m., Eastern time, for Vanguard Prime Money Market Fund), the redemption proceeds will leave Vanguard by the close of business the same day. For telephone requests received by Vanguard on a business day after those cut-off times, or on a nonbusiness day, and for all requests other than by telephone, the redemption proceeds will leave Vanguard by the close of business on the next business day.

. Note on timing of wire redemptions from bond funds: For requests received by Vanguard on a business day before the close of regular trading on the NYSE (generally 4 p.m., Eastern time), the redemption proceeds will leave Vanguard by the close of business on the next business day. For requests received by Vanguard on a business day after the close of regular trading on the NYSE, or on a nonbusiness day, the redemption proceeds will leave Vanguard by the close of business on the second business day after Vanguard receives the request.

For redemptions by electronic bank transfer using an AUTOMATIC WITHDRAWAL PLAN:
Your trade date generally will be the date you designated for withdrawal of funds (redemption of shares) from your Vanguard account. Proceeds of redeemed shares generally will be credited to your designated bank account two business days after your trade date. If the trade date you designated for withdrawal falls on a weekend, holiday, or other nonbusiness day, your trade date will be the previous business day.

For redemptions by ELECTRONIC BANK TRANSFER not using an Automatic Withdrawal Plan: If the redemption request is received by Vanguard on a business day before the close of regular trading on the NYSE (generally 4 p.m., Eastern time), the trade date generally will be the same day. If the redemption request is received on a business day after the close of regular trading on the NYSE, or on a nonbusiness day, the trade date will be the next business day.

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If your redemption request is not accurate and complete, it may be rejected. See Other Rules You Should Know--Good Order.

For further information about redemption transactions, consult our website at www.vanguard.com or see Contacting Vanguard.

OTHER REDEMPTION RULES YOU SHOULD KNOW
DOCUMENTATION FOR CERTAIN ACCOUNTS. Special documentation may be required to redeem from certain types of accounts, such as trust, corporate, nonprofit, or retirement accounts. Please call us before attempting to redeem from these types of accounts.

POTENTIALLY DISRUPTIVE REDEMPTIONS. Vanguard reserves the right to pay all or part of a redemption in kind--that is, in the form of securities--if we reasonably believe that a cash redemption would negatively affect the fund's operation or performance or that the shareholder may be engaged in market-timing or frequent trading. Under these circumstances, Vanguard also reserves the right to delay payment of the redemption proceeds for up to seven calendar days. By calling us before you attempt to redeem a large dollar amount, you may avoid in-kind or delayed payment of your redemption. Please see Frequent-Trading Limits for information about Vanguard's policies to limit frequent trading.

RECENTLY PURCHASED SHARES. Although you can redeem shares at any time, proceeds may not be made available to you until the fund collects payment for your purchase. This may take up to ten calendar days for shares purchased by check or by electronic bank transfer. If you have written a check on a fund with checkwriting privileges, that check may be rejected if your fund account does not have a sufficient available balance.

SHARE CERTIFICATES. If share certificates were issued for your fund account, those shares cannot be redeemed, exchanged, or converted until you return the certificates (unsigned) to Vanguard by registered mail. For the correct address, see Contacting Vanguard.

ADDRESS CHANGE. If you change your address online or by telephone, there may be a 15-day restriction on your ability to make online and telephone redemptions. You can request a redemption in writing at any time. Confirmations of address changes are sent to both the old and new addresses.

PAYMENT TO A DIFFERENT PERSON OR ADDRESS. At your request, we can make your redemption check payable to a different person or send it to a different address. However, this requires the written consent of all registered account owners and may require a signature guarantee. You can obtain a signature guarantee from most commercial and savings banks, credit unions, trust companies, or member firms of a U.S. stock exchange. A notary public cannot provide a signature guarantee.

25

NO CANCELLATIONS. Vanguard will not accept your request to cancel any redemption request once processing has begun. Please be careful when placing a redemption request.

EMERGENCY CIRCUMSTANCES. Vanguard funds can postpone payment of redemption proceeds for up to seven calendar days. In addition, Vanguard funds can suspend redemptions and/or postpone payments of redemption proceeds beyond seven calendar days at times when the NYSE is closed or during emergency circumstances, as determined by the SEC.

EXCHANGING SHARES

An exchange occurs when you use the proceeds from the redemption of shares of one Vanguard fund to simultaneously purchase shares of a different Vanguard fund. You can make exchange requests online (if you are a registered user of Vanguard.com), by telephone, or by mail. See Purchasing Shares and Redeeming Shares.

If the NYSE is open for regular trading (a business day) at the time an exchange request is received in good order, the trade date will generally be the same day. See Other Rules You Should Know--Good Order for additional information on all transaction requests.

Please note that Vanguard reserves the right, without prior notice, to revise or terminate the exchange privilege, limit the amount of any exchange, or reject an exchange, at any time, for any reason.

FREQUENT-TRADING LIMITS

Because excessive transactions can disrupt management of a fund and increase the fund's costs for all shareholders, Vanguard places certain limits on frequent trading in the Vanguard funds. Each Vanguard fund (other than money market funds, short-term bond funds, and ETF Shares) limits an investor's purchases or exchanges into a fund account for 60 calendar days after the investor has redeemed or exchanged out of that fund account.

For Vanguard Retirement Investment Program pooled plans, the policy applies to exchanges made by participants online or by phone.

The policy does not apply to the following:

. Purchases of shares with reinvested dividend or capital gains distributions.

. Transactions through Vanguard's Automatic Investment Plan, Automatic Exchange Service, Direct Deposit Service, Automatic Withdrawal Plan, Required Minimum Distribution Service, and Vanguard Small Business Online/(R)/.

. Redemptions of shares to pay fund or account fees.

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. Transaction requests submitted by mail to Vanguard from shareholders who hold their accounts directly with Vanguard. (Wire transactions and transaction requests submitted by fax are not mail transactions and are subject to the policy.)

. Transfers and re-registrations of shares within the same fund.

. Purchases of shares by asset transfer or direct rollover.

. Conversions of shares from one share class to another in the same fund.

. Checkwriting redemptions.

. Section 529 college savings plans.

. Certain approved institutional portfolios and asset allocation programs, as well as trades made by Vanguard funds that invest in other Vanguard funds. (Please note that shareholders of Vanguard's funds of funds are subject to the policy.)

For participants in employer-sponsored defined contribution plans that are not served by Vanguard Small Business Services, the frequent-trading policy does not apply to:

. Purchases of shares with participant payroll or employer contributions or loan repayments.

. Purchases of shares with reinvested dividend or capital gains distributions.

. Distributions, loans, and in-service withdrawals from a plan.

. Redemptions of shares as part of a plan termination or at the direction of the plan.

. Automated transactions executed during the first six months of a participant's enrollment in the Vanguard Managed Account Program.

. Redemptions of shares to pay fund or account fees.

. Share or asset transfers or rollovers.

. Re-registrations of shares.

. Conversions of shares from one share class to another in the same fund.

. Exchange requests submitted by mail to Vanguard. (Exchange requests submitted by fax or wire are not mail requests and remain subject to the policy.)

ACCOUNTS HELD BY INSTITUTIONS (OTHER THAN DEFINED CONTRIBUTION PLANS) Vanguard will systematically monitor for frequent trading in institutional clients' accounts. If we detect suspicious trading activity, we will investigate and take appropriate action, which may include applying to a client's accounts the 60-day policy previously described, prohibiting a client's purchases of fund shares, and/or eliminating the client's exchange privilege.

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ACCOUNTS HELD BY INTERMEDIARIES

When intermediaries establish accounts in Vanguard funds for their clients, we cannot always monitor the trading activity of the individual clients. However, we review trading activity at the omnibus level, and if we detect suspicious activity, we will investigate and take appropriate action. If necessary, Vanguard may prohibit additional purchases of fund shares by an intermediary or by certain of the intermediary's clients. Intermediaries may also monitor their clients' trading activities in the Vanguard funds.

For those Vanguard funds that charge purchase or redemption fees, intermediaries will be asked to assess purchase and redemption fees on shareholder and participant accounts and remit these fees to the funds. The application of purchase and redemption fees and frequent-trading policies may vary among intermediaries. There are no assurances that Vanguard will successfully identify all intermediaries or that intermediaries will properly assess purchase and redemption fees or administer frequent-trading policies. If you invest with Vanguard through an intermediary, please read that firm's materials carefully to learn of any other rules or fees that may apply.

OTHER RULES YOU SHOULD KNOW

PROSPECTUS AND SHAREHOLDER REPORT MAILINGS
Vanguard attempts to eliminate the unnecessary expense of duplicate mailings by sending just one prospectus and/or report when two or more shareholders have the same last name and address. You may request individual prospectuses and reports by contacting our Client Services Department in writing, by telephone, or by e-mail.

VANGUARD.COM
REGISTRATION. If you are a registered user of Vanguard.com, you can use your personal computer to review your account holdings; to buy, sell, or exchange shares of most Vanguard funds; and to perform most other transactions. You must register for this service online.

ELECTRONIC DELIVERY. Vanguard can deliver your account statements, transaction confirmations, and fund financial reports electronically. If you are a registered user of Vanguard.com, you can consent to the electronic delivery of these documents by logging on and changing your mailing preference under "My Profile." You can revoke your electronic consent at any time, and we will begin to send paper copies of these documents within 30 days of receiving your notice.

TELEPHONE TRANSACTIONS
AUTOMATIC. When we set up your account, we'll automatically enable you to do business with us by telephone, unless you instruct us otherwise in writing.

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TELE-ACCOUNT/(R)/. To conduct account transactions through Vanguard's automated telephone service, you must first obtain a Personal Identification Number (PIN). Call Tele-Account at 800-662-6273 to obtain a PIN, and allow seven days after requesting the PIN before using this service.

PROOF OF A CALLER'S AUTHORITY. We reserve the right to refuse a telephone request if the caller is unable to provide the requested information or if we reasonably believe that the caller is not an individual authorized to act on the account. Before we allow a caller to act on an account, we may request the following information:

. Authorization to act on the account (as the account owner or by legal documentation or other means).

. Account registration and address.

. Fund name and account number, if applicable.

. Other information relating to the caller, the account holder, or the account.

SUBJECT TO REVISION. For any or all shareholders, we reserve the right, at any time and without prior notice, to revise, suspend, or terminate the privilege to transact or communicate with Vanguard by telephone.

GOOD ORDER
We reserve the right to reject any transaction instructions that are not in "good order". Good order generally means that your instructions include:

. The fund name and account number.

. The amount of the transaction (stated in dollars, shares, or percentage).

Written instructions also must include:

. Signatures of all registered owners.

. Signature guarantees, if required for the type of transaction. (Call Vanguard for specific signature-guarantee requirements.)

. Any supporting documentation that may be required.

The requirements vary among types of accounts and transactions.

Vanguard reserves the right, without prior notice, to revise the requirements for
good order.

FUTURE TRADE-DATE REQUESTS

Vanguard does not accept requests to hold a purchase, redemption, or exchange transaction for a future date. All such requests will receive trade dates as previously described in Purchasing Shares and Redeeming Shares. Vanguard reserves the right to return future-dated purchase checks.

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ACCOUNTS WITH MORE THAN ONE OWNER
If an account has more than one owner or authorized person, Vanguard will accept telephone or online instructions from any one owner or authorized person.

RESPONSIBILITY FOR FRAUD

Vanguard will not be responsible for any account losses because of fraud if we reasonably believe that the person transacting business on an account is authorized to do so. Please take precautions to protect yourself from fraud. Keep your account information private, and immediately review any account statements that we provide to you. It is important that you contact Vanguard immediately about any transactions you believe to be unauthorized.

UNCASHED CHECKS
Please cash your distribution or redemption checks promptly. Vanguard will not pay interest on uncashed checks.

UNUSUAL CIRCUMSTANCES
If you experience difficulty contacting Vanguard online, by telephone, or by Tele-Account, you can send us your transaction request by regular or express mail. See Contacting Vanguard for addresses.

INVESTING WITH VANGUARD THROUGH OTHER FIRMS

You may purchase or sell shares of most Vanguard funds through a financial intermediary, such as a bank, broker, or investment advisor. Please consult your financial intermediary to determine which, if any, shares are available through that firm and to learn about other rules that may apply.

Please see Frequent-Trading Limits--Accounts Held by Intermediaries for information about the assessment of redemption fees and monitoring of frequent trading for accounts held by intermediaries.

ACCOUNT SERVICE FEE
For most shareholders, Vanguard deducts a $20 account service fee from all fund accounts that have a balance below $10,000 for any reason, including market fluctuation. The account service fee applies to both retirement and nonretirement fund accounts. The fee will be assessed on fund accounts in all Vanguard funds, regardless of a fund's minimum investment amount. The account service fee, which will be collected by redeeming fund shares in the amount of $20, will be deducted from a fund account only once per calendar year.

30

If you register on Vanguard.com and elect to receive electronic delivery of statements, reports, and other materials for all of your fund accounts, the account service fee for balances below $10,000 will not be charged, so long as that election remains in effect.

The account service fee also does not apply to the following:

. Money market sweep accounts held through Vanguard Brokerage Services/(R)/.

. Accounts held through intermediaries.

. Accounts held by Voyager, Voyager Select, and Flagship clients. Membership is based on total household assets held at Vanguard, with a minimum of $100,000 to qualify for Vanguard Voyager Services/TM/, $500,000 for Vanguard Voyager Select Services/TM/, and $1 million for Vanguard Flagship Services/TM/. Vanguard determines membership by aggregating assets of all eligible accounts held by the investor and immediate family members who reside at the same address. Aggregate assets include investments in Vanguard mutual funds, Vanguard ETFs/TM/, annuities through Vanguard, the Vanguard 529 Plan, certain small-business accounts, and employer-sponsored retirement plans for which Vanguard provides recordkeeping services.

. Participant accounts in employer-sponsored defined contribution plans (other than those served by the Vanguard Small Business Services Department, which are subject to various fee structures). Please consult your enrollment materials for the rules that apply to your account.

. Section 529 college savings plans.

LOW-BALANCE ACCOUNTS

The Fund reserves the right, without prior notice, to liquidate any investment-only retirement-plan fund account or any nonretirement fund account whose balance falls below the minimum initial investment for any reason, including market fluctuation. Shares redeemed in accordance with this policy will be subject to applicable redemption fees.

RIGHT TO CHANGE POLICIES

In addition to the rights expressly stated elsewhere in this prospectus, Vanguard reserves the right to (1) alter, add, or discontinue any conditions of purchase (including eligibility requirements), redemption, exchange, service, or privilege at any time without prior notice; (2) accept initial purchases by telephone; (3) freeze any account and/or suspend account services when Vanguard has received reasonable notice of a dispute regarding the assets in an account, including notice of a dispute between the registered or beneficial account owners or when we reasonably believe a fraudulent transaction may occur or has occurred; (4) temporarily freeze any account and/or suspend account services upon initial notification to Vanguard of the death of the

31

shareholder until Vanguard receives required documentation in good order; (5) alter, impose, discontinue, or waive any redemption fee, account service fee, or other fees charged to a group of shareholders; and (6) redeem an account, without the owner's permission to do so, in cases of threatening conduct or suspicious, fraudulent, or illegal activity. Changes may affect any or all investors. These actions will be taken when, at the sole discretion of Vanguard management, we reasonably believe they are deemed to be in the best interest of a fund.

FUND AND ACCOUNT UPDATES

CONFIRMATION STATEMENTS

We will send (or provide online, whichever you prefer) a confirmation of your trade date and the amount of your transaction when you buy, sell, or exchange shares. However, we will not send confirmations reflecting only checkwriting redemptions or the reinvestment of dividends or capital gains distributions. For any month in which you had a checkwriting redemption, a Checkwriting Activity Statement will be sent to you itemizing the checkwriting redemptions for that month. Promptly review each confirmation statement that we provide to you by mail or online. It is important that you contact Vanguard immediately with any questions you may have about any transaction reflected on a confirmation statement, or Vanguard will consider the transaction properly processed.

PORTFOLIO SUMMARIES

We will send (or provide online, whichever you prefer) quarterly portfolio summaries to help you keep track of your accounts throughout the year. Each summary shows the market value of your account at the close of the statement period, as well as all distributions, purchases, redemptions, exchanges, and transfers for the current calendar year. Promptly review each summary that we provide to you by mail or online. It is important that you contact Vanguard immediately with any questions you may have about any transaction reflected on the summary, or Vanguard will consider the transaction properly processed.

TAX STATEMENTS
For most taxable accounts, we will send annual tax statements to assist you in preparing your income tax returns. These statements, which are generally mailed in January, will report the previous year's dividend and capital gains distributions, proceeds from the sale of shares, and distributions from IRAs and other retirement plans. These statements can be viewed online.

32

AVERAGE-COST REVIEW STATEMENTS

For most taxable accounts, average-cost review statements will accompany annual 1099B tax forms. These tax forms show the average cost of shares that you redeemed during the previous calendar year, using the average-cost single-category method, which is one of the methods established by the IRS.

ANNUAL AND SEMIANNUAL REPORTS
We will send (or provide online, whichever you prefer) financial reports about Vanguard Mid-Cap Growth Fund twice a year, in June and December. These comprehensive reports include overviews of the financial markets and provide the following specific Fund information:

. Performance assessments and comparisons with industry benchmarks.

. Reports from the advisors.

. Financial statements with listings of Fund holdings.

PORTFOLIO HOLDINGS
We generally post on our website at www.vanguard.com, in the HOLDINGS section of the Fund's Profile page, a detailed list of the securities held by the Fund (under PORTFOLIO HOLDINGS), as of the most recent calendar-quarter-end. This list is generally updated within 30 days after the end of each calendar quarter. Vanguard may exclude any portion of these portfolio holdings from publication when deemed in the best interest of the Fund. We also generally post the ten largest stock portfolio holdings of the Fund and the percentage of the Fund's total assets that each of these holdings represents, as of the most recent calendar-quarter-end. This list is generally updated within 15 calendar days after the end of each calendar quarter. Please consult the Fund's Statement of Additional Information or our website for a description of the policies and procedures that govern disclosure of the Fund's portfolio holdings.

33

CONTACTING VANGUARD

WEB
---------------------------------------------------------------------------------------------------------------
Vanguard.com For the most complete source of Vanguard news
24 hours a day, 7 days a week For fund, account, and service information
 For most account transactions
 For literature requests
---------------------------------------------------------------------------------------------------------------

PHONE
---------------------------------------------------------------------------------------------------------------
Vanguard Tele-Account/(R)/ 800-662-6273 For automated fund and account information
(ON-BOARD) For exchange transactions (subject to limitations)
 Toll-free, 24 hours a day, 7 days a week
---------------------------------------------------------------------------------------------------------------
Investor Information 800-662-7447 (SHIP) For fund and service information
(Text telephone for people with hearing For literature requests
impairment at 800-952-3335) Business hours only: Monday-Friday, 8 a.m. to 10 p.m.,
 Eastern time; Saturday, 9 a.m. to 4 p.m., Eastern time
---------------------------------------------------------------------------------------------------------------
Client Services 800-662-2739 (CREW) For account information
(Text telephone for people with hearing For most account transactions
impairment at 800-749-7273) Business hours only: Monday-Friday, 8 a.m. to 10 p.m.,
 Eastern time; Saturday, 9 a.m. to 4 p.m., Eastern time
---------------------------------------------------------------------------------------------------------------
Institutional Division For information and services for large institutional investors
888-809-8102 Business hours only: Monday-Friday, 8:30 a.m. to 9 p.m.,
 Eastern time
---------------------------------------------------------------------------------------------------------------
Intermediary Sales Support For information and services for financial intermediaries
800-997-2798 including broker-dealers, trust institutions, insurance
 companies, and financial advisors
 Business hours only: Monday-Friday, 8:30 a.m. to 7 p.m.,
 Eastern time
---------------------------------------------------------------------------------------------------------------

34

VANGUARD ADDRESSES

Please be sure to use the correct address, depending on your method of delivery. Use of an incorrect address could delay the processing of your transaction.

Regular Mail (Individuals) The Vanguard Group
 P.O. Box 1110
 Valley Forge, PA 19482-1110
----------------------------------------------------------------------
Regular Mail (Institutions) The Vanguard Group
 P.O. Box 2900
 Valley Forge, PA 19482-2900
----------------------------------------------------------------------
Registered, Express, or Overnight The Vanguard Group
 455 Devon Park Drive
 Wayne, PA 19087-1815
----------------------------------------------------------------------

FUND NUMBER
Please use the specific fund number when contacting us:


Vanguard Mid-Cap Growth Fund 301

Vanguard, Vanguard.com, Connect with Vanguard, Plain Talk, Vanguard Tele-Account, Tele-Account, Vanguard ETF, Vanguard ETFs, Vanguard Small Business Online, Vanguard Brokerage Services, Vanguard Voyager Services, Voyager, Vanguard Voyager Select Services, Voyager Select, Vanguard Flagship Services, Flagship, and the ship logo are trademarks of The Vanguard Group, Inc. All other marks are the exclusive property of their respective owners.

35

GLOSSARY OF INVESTMENT TERMS

CAPITAL GAINS DISTRIBUTION. Payment to mutual fund shareholders of gains realized on securities that a fund has sold at a profit, minus any realized losses.

CASH INVESTMENTS. Cash deposits, short-term bank deposits, and money market instruments that include U.S. Treasury bills and notes, bank certificates of deposit (CDs), repurchase agreements, commercial paper, and banker's acceptances.

COMMON STOCK. A security representing ownership rights in a corporation. A stockholder is entitled to share in the company's profits, some of which may be paid out as dividends.

DIVIDEND DISTRIBUTION. Payment to mutual fund shareholders of income from interest or dividends generated by a fund's investments.

EXPENSE RATIO. The percentage of a fund's average net assets used to pay its expenses during a fiscal year. The expense ratio includes management expenses--such as advisory fees, account maintenance, reporting, accounting, legal, and other administrative expenses--and any 12b-1 distribution fees. It does not include the transaction costs of buying and selling portfolio securities.

GROWTH FUND. A mutual fund that emphasizes stocks of companies believed to have above-average potential for growth in revenue, earnings, cash flow, or other similar criteria. These stocks typically have low dividend yields and above-average prices in relation to such measures as earnings and book value.

INCEPTION DATE. The date on which the assets of a fund (or one of its share classes) are first invested in accordance with the fund's investment objective. For funds with a subscription period, the inception date is the day after that period ends. Investment performance is measured from the inception date.

INVESTMENT ADVISOR. An organization that is responsible for making the day-to-day decisions regarding a fund's investments.

MEDIAN MARKET CAP. An indicator of the size of companies in which a fund invests; the midpoint of market capitalization (market price x shares outstanding) of a fund's stocks, weighted by the proportion of the fund's assets invested in each stock. Stocks representing half of the fund's assets have market capitalizations above the median, and the rest are below it.

MUTUAL FUND. An investment company that pools the money of many people and invests it in a variety of securities in an effort to achieve a specific objective over time.

NET ASSET VALUE (NAV). The market value of a mutual fund's total assets, minus liabilities, divided by the number of shares outstanding. The value of a single share is also called its share value or share price.

36

PRINCIPAL. The face value of a debt instrument or the amount of money put into an investment.

SECURITIES. Stocks, bonds, money market instruments, and other investment vehicles.

TOTAL RETURN. A percentage change, over a specified time period, in a mutual fund's net asset value, assuming the reinvestment of all distributions of dividends and
capital gains.

VALUE FUND. A mutual fund that emphasizes stocks whose prices typically are below average in relation to such measures as earnings and book value. These stocks often have above-average dividend yields.

VOLATILITY. The fluctuations in value of a mutual fund or other security. The greater a fund's volatility, the wider the fluctuations in its returns.

YIELD. Income (interest or dividends) earned by an investment, expressed as a percentage of the investment's price.

37

[SHIP LOGO][VANGUARD/(R)/ LOGO]

P.O. Box 2600
Valley Forge, PA 19482-2600

CONNECT WITH VANGUARD/(R)/ > www.vanguard.com

FOR MORE INFORMATION
If you would like more information about Vanguard Mid-Cap Growth Fund, the following documents are available free upon request:

ANNUAL/SEMIANNUAL REPORTS TO SHAREHOLDERS
Additional information about the Fund's investments is available in the Fund's annual and semiannual reports to shareholders. In the annual report, you will find a discussion of the market conditions and investment strategies that significantly affected the Fund's performance during its last fiscal year.

STATEMENT OF ADDITIONAL INFORMATION (SAI)
The SAI provides more detailed information about the Fund.

The current annual and semiannual reports and the SAI are incorporated by reference into (and are thus legally a part of) this prospectus.

To receive a free copy of the latest annual or semiannual report or the SAI, or to request additional information about the Fund or other Vanguard funds, please visit www.vanguard.com or contact us as follows:

The Vanguard Group
Investor Information Department
P.O. Box 2600
Valley Forge, PA 19482-2600
Telephone: 800-662-7447 (SHIP)
Text telephone for people with hearing impairment: 800-952-3335

If you are a current Vanguard shareholder and would like information about your account, account transactions, and/or account statements, please call:

Client Services Department
Telephone: 800-662-2739 (CREW)
Text telephone for people with hearing impairment: 800-749-7273

INFORMATION PROVIDED BY THE SECURITIES AND EXCHANGE COMMISSION (SEC) You can review and copy information about the Fund (including the SAI) at the SEC's Public Reference Room in Washington, DC. To find out more about this public service, call the SEC at 202-551-8090. Reports and other information about the Fund are also available in the EDGAR database on the SEC's Internet site at www.sec.gov, or you can receive copies of this information, for a fee, by electronic request at the following e-mail address: publicinfo@sec.gov, or by writing the Public Reference Section, Securities and Exchange Commission, Washington, DC 20549-0102.

Fund's Investment Company Act file number: 811-07443

(C) 2008 The Vanguard Group, Inc. All rights reserved. Vanguard Marketing Corporation, Distributor.

P301 022008


VANGUARD/(R)/ MID-CAP GROWTH FUND

> PROSPECTUS

FOR PARTICIPANTS

February 22, 2008


[SHIP LOGO][VANGUARD/(R)/ LOGO]


This prospectus contains financial data for the Fund through the fiscal year ended October 31, 2007.

NEITHER THE SECURITIES AND EXCHANGE COMMISSION NOR ANY STATE SECURITIES COMMISSION HAS APPROVED OR DISAPPROVED OF THESE SECURITIES OR PASSED UPON THE ACCURACY OR ADEQUACY OF THIS PROSPECTUS. ANY REPRESENTATION TO THE CONTRARY IS A CRIMINAL OFFENSE.


CONTENTS

-------------------------------------------------------------------------------
Fund Profile 1 Financial Highlights 16
-------------------------------------------------------------------------------
More on the Fund 5 Investing With Vanguard 18
-------------------------------------------------------------------------------
 The Fund and Vanguard 10 Accessing Fund Information by Computer 21
-------------------------------------------------------------------------------
 Investment Advisors 11 Glossary of Investment Terms 22
-------------------------------------------------------------------------------
 Dividends, Capital 14
 Gains, and Taxes
-------------------------------------------------------------------------------
 Share Price 15
-------------------------------------------------------------------------------

WHY READING THIS PROSPECTUS IS IMPORTANT
This prospectus explains the investment objective, policies, strategies, and risks associated with the Fund. To highlight terms and concepts important to mutual fund investors, we have provided Plain Talk/(R)/ explanations along the way. Reading the prospectus will help you decide whether the Fund is the right investment for you. We suggest that you keep this prospectus for future reference.

This prospectus is intended for participants in employer-sponsored retirement or savings plans. Another version--for investors who would like to open a personal investment account--can be obtained by calling Vanguard at 800-662-7447.


FUND PROFILE

INVESTMENT OBJECTIVE
The Fund seeks to provide long-term capital appreciation.

PRIMARY INVESTMENT STRATEGIES

The Fund invests at least 80% of its assets in common stocks of medium-size companies. In selecting investments, each advisor invests in those medium-size companies that it believes have the best prospects for future growth. The Fund uses multiple investment advisors.

PRIMARY RISKS
An investment in the Fund could lose money over short or even long periods. You should expect the Fund's share price and total return to fluctuate within a wide range, like the fluctuations of the overall stock market. The Fund's performance could be hurt by:

. Stock market risk, which is the chance that stock prices overall will decline. Stock markets tend to move in cycles, with periods of rising prices and periods of falling prices.

. Investment style risk, which is the chance that returns from mid-capitalization growth stocks will trail returns from the overall stock market. Historically, mid-cap stocks have been more volatile in price than the large-cap stocks that dominate the overall market, and they often perform quite differently. Mid-cap stocks tend to have greater volatility than large-cap stocks because, among other things, medium-size companies are more sensitive to changing economic conditions.

. Manager risk, which is the chance that poor security selection will cause the Fund to underperform relevant benchmarks or other funds with a similar investment objective.

PERFORMANCE/RISK INFORMATION
The following bar chart and table are intended to help you understand the risks of investing in the Fund.* The bar chart shows how the performance of the Fund has varied from one calendar year to another over the periods shown. The table shows how the average annual total returns compare with those of a a relevant market index. Keep in mind that the Fund's past performance does not indicate how the Fund will perform in the future.

* Prior to June 29, 2002, Vanguard Mid-Cap Growth Fund was organized as Provident Investment Counsel Mid Cap Fund A (PIC Fund) and was sponsored by Provident Investment Counsel, Inc. A reorganization brought the Fund into The Vanguard Group; the investment objective, risks, and policies of the Fund remain substantially similar.

1

ANNUAL TOTAL RETURNS/1/

BAR CHART
 [-60% to 120%]

 1998 26.30%
 1999 83.33%
 2000 12.96%
 2001 -25.37%
 2002 -28.54%
 2003 42.81%
 2004 11.38%
 2005 9.13%
 2006 12.72%
 2007 14.69%
-------------------------------------------------------------------------------

1 Return figures do not reflect the 5.75% maximum sales charge imposed on purchases of shares of the PIC Fund prior to its reorganization into the Fund on June 29, 2002. If the charge were reflected, returns would be less than those shown.

During the periods shown in the bar chart, the highest return for a calendar quarter was 56.66% (quarter ended December 31, 1999), and the lowest return for a quarter was -30.22% (quarter ended September 30, 2001).

AVERAGE ANNUAL TOTAL RETURNS FOR PERIODS ENDED DECEMBER 31, 2007

 1 Year 5 Years 10 Years
-------------------------------------------------------------------------------
VANGUARD MID-CAP GROWTH FUND/1/ 14.69% 17.55% 12.09%
--------------------------------------------------------------------------------
RUSSELL MIDCAP GROWTH INDEX
(reflects no deduction
for fees or expenses) 11.43% 17.90% 7.59%
--------------------------------------------------------------------------------

1 Return figures do not reflect the 5.75% maximum sales charge imposed on purchases of shares of the PIC Fund prior to its reorganization into the Fund on June 29, 2002. If the charge were reflected, returns would be less than those shown.

FEES AND EXPENSES

The following table describes the fees and expenses you may pay if you buy and hold shares of the Fund. As is the case with all mutual funds, transaction costs incurred by the Fund for buying and selling securities are not reflected in the table. However, these costs are reflected in the investment performance figures included in this prospectus. The expenses shown under Annual Fund Operating Expenses are based on those incurred in the fiscal year ended October 31, 2007.

2

SHAREHOLDER FEES
(Fees paid directly from your investment)

-------------------------------------------------------------------------
Sales Charge (Load) Imposed on Purchases None
-------------------------------------------------------------------------
Purchase Fee None
-------------------------------------------------------------------------
Sales Charge (Load) Imposed on Reinvested Dividends None
-------------------------------------------------------------------------
Redemption Fee None
-------------------------------------------------------------------------

ANNUAL FUND OPERATING EXPENSES
(Expenses deducted from the Fund's assets)

-------------------------------------------------------------------------
Management Expenses 0.53%
-------------------------------------------------------------------------
12b-1 Distribution Fee None
-------------------------------------------------------------------------
Other Expenses 0.03%
-------------------------------------------------------------------------
Total Annual Fund Operating Expenses 0.56%
-------------------------------------------------------------------------

The following example is intended to help you compare the cost of investing in the Fund with the cost of investing in other mutual funds. It illustrates the hypothetical expenses that you would incur over various periods if you invest $10,000 in the Fund's shares. This example assumes that the Fund provides a return of 5% a year and that operating expenses remain the same. The results apply whether or not you redeem your investment at the end of the given period.

1 Year 3 Years 5 Years 10 Years
-------------------------------------------------------------------------------
$57 $179 $313 $701
-------------------------------------------------------------------------------

THIS EXAMPLE SHOULD NOT BE CONSIDERED TO REPRESENT ACTUAL EXPENSES OR PERFORMANCE FROM THE PAST OR FOR THE FUTURE. ACTUAL FUTURE EXPENSES MAY BE HIGHER OR LOWER THAN THOSE SHOWN.

3


PLAIN TALK ABOUT FUND EXPENSES

All mutual funds have operating expenses. These expenses, which are deducted from a fund's gross income, are expressed as a percentage of the net assets of the fund. Vanguard Mid-Cap Growth Fund's expense ratio in fiscal year 2007 was 0.56%, or $5.60 per $1,000 of average net assets. The average mid-cap growth fund had expenses in 2006 of 1.56%, or $15.60 per $1,000 of average net assets (derived from data provided by Lipper Inc., which reports on the mutual fund industry). Management expenses, which are one part of operating expenses, include investment advisory fees as well as other costs of managing a fund--such as account maintenance, reporting, accounting, legal, and other administrative expenses.


PLAIN TALK ABOUT COSTS OF INVESTING

Costs are an important consideration in choosing a mutual fund. That's because you, as a shareholder, pay the costs of operating a fund, plus any transaction costs incurred when the fund buys or sells securities. These costs can erode a substantial portion of the gross income or the capital appreciation a fund achieves. Even seemingly small differences in expenses can, over time, have a dramatic effect on a fund's performance.

ADDITIONAL INFORMATION

As of October 31, 2007
-------------------------------------------------------------------------------
Net Assets (all share $1.3 billion
classes)
-------------------------------------------------------------------------------
Investment Advisor . Chartwell Investment Partners, L.P., Berwyn, Pa.,
 since 2006

 . William Blair & Company, L.L.C., Chicago, Ill.,
 since 2006
-------------------------------------------------------------------------------
Dividends and Capital Distributed annually in December
Gains
-------------------------------------------------------------------------------
Inception Date December 31, 1997
-------------------------------------------------------------------------------
Newspaper Abbreviation MidCpGro
-------------------------------------------------------------------------------
Vanguard Fund Number 301
-------------------------------------------------------------------------------
CUSIP Number 921946307
-------------------------------------------------------------------------------
Ticker Symbol VMGRX
-------------------------------------------------------------------------------

4

MORE ON THE FUND

This prospectus describes the primary risks you would face as a Fund shareholder. It is important to keep in mind one of the main axioms of investing: The higher the risk of losing money, the higher the potential reward. The reverse, also, is generally true: The lower the risk, the lower the potential reward. As you consider an investment in any mutual fund, you should take into account your personal tolerance for fluctuations in the securities markets. Look for this FLAG LOGO symbol throughout the prospectus. It is used to mark detailed information about the more significant risks that you would confront as a Fund shareholder.

The following sections explain the primary investment strategies and policies that the Fund uses in pursuit of its objective. The Fund's board of trustees, which oversees the Fund's management, may change investment strategies or policies in the interest of shareholders without a shareholder vote, unless those strategies or policies are designated as fundamental. Note that the Fund's investment objective is not fundamental and may be changed without a shareholder vote.

MARKET EXPOSURE

The Fund invests at least 80% of its assets primarily in common stocks of medium-size companies. Market capitalizations are within the capitalization range of the companies included in the Russell Midcap Growth Index ($835 million to $31.1 billion as of October 31, 2007). The Fund may change its 80% policy only upon 60 days' notice to shareholders. Additionally, in selecting investments, each advisor invests in those medium-size companies that it believes have the best prospects for future growth. However, the Fund has the flexibility to invest the balance of its assets in common stocks with other market capitalizations and in other security types.


PLAIN TALK ABOUT GROWTH FUNDS AND VALUE FUNDS

Growth investing and value investing are two styles employed by stock-fund managers. Growth funds generally focus on stocks of companies believed to have above-average potential for growth in revenue, earnings, cash flow, or other similar criteria. These stocks typically have low dividend yields and above-average prices in relation to such measures as earnings and book value. Value funds typically emphasize stocks whose prices are below average in relation to those measures; these stocks often have above-average dividend yields. Growth and value stocks have historically produced similar long-term returns, though each category has periods when it outperforms the other.

5

FLAG LOGO
THE FUND IS SUBJECT TO INVESTMENT STYLE RISK, WHICH IS THE CHANCE THAT RETURNS FROM MID-CAPITALIZATION GROWTH STOCKS WILL TRAIL RETURNS FROM THE OVERALL STOCK MARKET. HISTORICALLY, MID-CAP STOCKS HAVE BEEN MORE VOLATILE IN PRICE THAN THE LARGE-CAP STOCKS THAT DOMINATE THE OVERALL MARKET, AND THEY OFTEN PERFORM QUITE DIFFERENTLY. MID-CAP STOCKS TEND TO HAVE GREATER VOLATILITY THAN LARGE-CAP STOCKS BECAUSE, AMONG OTHER THINGS, MEDIUM-SIZE COMPANIES ARE MORE SENSITIVE TO CHANGING ECONOMIC CONDITIONS.

Stocks of publicly traded companies and funds that invest in stocks are often classified according to market value, or market capitalization. These classifications typically include small-cap, mid-cap, and large-cap. It's important to understand that, for both companies and stock funds, market-capitalization ranges change over time. Also, interpretations of size vary, and there are no "official" definitions of small-, mid-, and large-cap, even among Vanguard fund advisors. The asset-weighted median market capitalization of the Fund as of October 31, 2007, was $5.0 billion.

FLAG LOGO
THE FUND IS SUBJECT TO STOCK MARKET RISK, WHICH IS THE CHANCE THAT STOCK PRICES OVERALL WILL DECLINE. STOCK MARKETS TEND TO MOVE IN CYCLES, WITH PERIODS OF RISING PRICES AND PERIODS OF FALLING PRICES.

To illustrate the volatility of stock prices, the following table shows the best, worst, and average annual total returns for the U.S. stock market over various periods as measured by the Standard & Poor's 500 Index, a widely used barometer of market activity. (Total returns consist of dividend income plus change in market price.) Note that the returns shown do not include the costs of buying and selling stocks or other expenses that a real-world investment portfolio would incur.

U.S. STOCK MARKET RETURNS
(1926-2007)

 1 Year 5 Years 10 Years 20 Years
-------------------------------------------------------------------------
Best 54.2% 28.6% 19.9% 17.8%
-------------------------------------------------------------------------
Worst -43.1 -12.4 -0.8 3.1
-------------------------------------------------------------------------
Average 12.2 10.4 11.1 11.4
-------------------------------------------------------------------------

The table covers all of the 1-, 5-, 10-, and 20-year periods from 1926 through 2007. You can see, for example, that although the average return on common stocks for all of the 5-year periods was 10.4%, average returns for individual 5-year periods ranged from -12.4% (from 1928 through 1932) to 28.6% (from 1995 through 1999). These average returns reflect past performance of common stocks; you should not regard them as an indication of future performance of either the stock market as a whole or the Fund in particular.

6

SECURITY SELECTION
The Fund uses multiple investment advisors. Each advisor independently selects and maintains a portfolio of common stocks for the Fund.

These advisors employ active investment management methods, which means that securities are bought and sold according to the advisors' evaluations of companies and their financial prospects, the prices of the securities, and the stock market and the economy in general. Each advisor will sell a security when it is no longer as attractive as an alternative investment.

Chartwell Investment Partners (Chartwell), which manages approximately 50% of the Fund's assets, invests in companies that demonstrate strong earnings-per-share growth and have strong competitive positions and products, while serving a meaningful customer base. Chartwell will invest opportunistically when stocks are attractively valued, yet it will concentrate holdings in those companies best positioned for rapid growth, all with an intermediate-term time horizon in mind.

Chartwell's research process is "bottom-up" driven. Chartwell uses analysis to identify companies in the mid-cap range with under appreciated growth potential, trading at attractive absolute and relative valuations. The result is a portfolio of 60 to 70 stocks for Chartwell.

William Blair & Company, L.L.C. (William Blair & Company), which manages approximately 50% of the Fund's assets, employs a fundamental, bottom-up stock selection process based on the market-cap range of the Russell Midcap Growth Index. William Blair & Company provides a concentrated portfolio (approximately 60 stocks) of high-quality growth stocks of companies that the advisor believes have superior, long-term earnings growth potential, combined with a proven and sustainable competitive advantage from market/brand position, technology position, or a unique asset base. William Blair & Company focuses on growth-oriented investing, fundamental research, and the depth of its investment team, which are its key strengths.

The Vanguard Group (Vanguard), manages a small portion of the Fund's assets to facilitate cash flows to and from the Fund's advisors. Vanguard typically invests its portion of the Fund's assets in stock index futures and/or shares of exchange-traded funds. For more details, see "Other Investment Policies and Risks."

The Fund is generally managed without regard to tax ramifications.

FLAG LOGO
THE FUND IS SUBJECT TO MANAGER RISK, WHICH IS THE CHANCE THAT POOR SECURITY SELECTION WILL CAUSE THE FUND TO UNDERPERFORM RELEVANT BENCHMARKS OR OTHER

FUNDS WITH A SIMILAR INVESTMENT OBJECTIVE.

7

OTHER INVESTMENT POLICIES AND RISKS

Although the Fund typically does not make significant investments in foreign securities, it reserves the right to invest up to 25% of its assets this way. Foreign securities may be traded on U.S. or foreign markets. To the extent that it owns foreign securities, the Fund is subject to country risk and currency risk. Country risk is the chance that world events--such as political upheaval, financial troubles, or natural disasters--will adversely affect the value of securities issued by companies in foreign countries. In addition, the prices of foreign stocks and the prices of U.S. stocks have, at times, moved in opposite directions. Currency risk is the chance that the value of a foreign investment, measured in U.S. dollars, will decrease because of unfavorable changes in currency exchange rates.

The Fund may invest, to a limited extent, in derivatives. Generally speaking, a derivative is a financial contract whose value is based on the value of a financial asset (such as a stock, bond, or currency), a physical asset (such as gold), or a market index (such as the S&P 500 Index). The Fund will not use derivatives for speculation or for the purpose of leveraging (magnifying) investment returns.

The Fund may enter into forward foreign currency exchange contracts, which are types of derivative contracts. A forward foreign currency exchange contract is an agreement to buy or sell a country's currency at a specific price on a specific date, usually 30, 60, or 90 days in the future. In other words, the contract guarantees an exchange rate on a given date. Managers of funds that invest in foreign securities use these contracts to guard against sudden, unfavorable changes in the U.S. dollar/foreign currency exchange rates. These contracts, however, will not prevent the Fund's securities from falling in value during foreign market downswings.

Vanguard typically invests a small portion of the Fund's assets in stock index futures and/or shares of exchange-traded funds (ETFs), including ETF Shares issued by Vanguard stock index funds. Stock index futures and ETFs provide returns similar to those of common stocks. Vanguard may purchase futures or ETFs when doing so will reduce the Fund's transaction costs or add value because the instruments are favorably priced. Vanguard receives no additional revenue from investing Fund assets in ETF Shares of other Vanguard funds. Fund assets invested in ETF Shares are excluded when allocating to the Fund its share of the costs of Vanguard operations.

CASH MANAGEMENT

The Fund's daily cash balance may be invested in one or more Vanguard CMT Funds, which are very low-cost money market funds. When investing in a Vanguard CMT Fund, the Fund bears its proportionate share of the at-cost expenses of the CMT Fund in which it invests.

8

TEMPORARY INVESTMENT MEASURES

The Fund may temporarily depart from its normal investment policies and strategies when doing so is believed to be in the Fund's best interest, so long as the alternative is consistent with the Fund's investment objective. For instance, the Fund may invest beyond the normal limits in derivatives or ETFs that are consistent with the Fund's objective when those instruments are more favorably priced or provide needed liquidity, as might be the case when the Fund is transitioning assets from one advisor to another or receives large cash flows that it cannot prudently invest immediately.

In addition, the Fund may take temporary defensive positions that are inconsistent with its normal investment policies and strategies--for instance, by allocating substantial assets to cash, commercial paper, or other less volatile instruments--in response to adverse or unusual market, economic, political, or other conditions. In doing so, the Fund may succeed in avoiding losses but may otherwise fail to achieve its investment objective.

FREQUENT TRADING OR MARKET-TIMING
BACKGROUND. Some investors try to profit from strategies involving frequent trading of mutual fund shares, such as market-timing. For funds holding foreign securities, investors may try to take advantage of an anticipated difference between the price of the fund's shares and price movements in overseas markets, a practice also known as time-zone arbitrage. Investors also may try to engage in frequent trading of funds holding investments such as small-cap stocks and high-yield bonds. As money is shifted into and out of a fund by a shareholder engaging in frequent trading, a fund incurs costs for buying and selling securities, resulting in increased brokerage and administrative costs. These costs are borne by all fund shareholders, including the long-term investors who do not generate the costs. In addition, frequent trading may interfere with an advisor's ability to efficiently manage the fund.

POLICIES TO ADDRESS FREQUENT TRADING. The Vanguard funds (other than money market funds, short-term bond funds, and Vanguard ETF/ TM/ Shares) do not knowingly accommodate frequent trading. The board of trustees of each Vanguard fund has adopted policies and procedures reasonably designed to detect and discourage frequent trading and, in some cases, to compensate the fund for the costs associated with it. Although there is no assurance that Vanguard will be able to detect or prevent frequent trading or market-timing in all circumstances, the following policies have been adopted to address these issues:

. Each Vanguard fund reserves the right to reject any purchase request--including exchanges from other Vanguard funds--without notice and regardless of size. For example, a purchase request could be rejected if Vanguard determines that such purchase may negatively affect a fund's operation or performance or because of a history of frequent trading by the investor.

9

. Each Vanguard fund (other than money market funds, short-term bond funds, and ETF Shares) generally prohibits, except as otherwise noted in the INVESTING WITH VANGUARD section, a participant from exchanging into a fund account for 60 calendar days after the participant exchanged out of that fund account.

. Certain Vanguard funds charge shareholders purchase and/or redemption fees on transactions.

See the INVESTING WITH VANGUARD section of this prospectus for further details on Vanguard's transaction policies.

Each fund (other than money market funds), in determining its net asset value, will, when appropriate, use fair-value pricing as described in the Share Price section. Fair-value pricing may reduce or eliminate the profitability of certain frequent-trading strategies.

DO NOT INVEST WITH VANGUARD IF YOU ARE A MARKET-TIMER.

TURNOVER RATE

Although the Fund normally seeks to invest for the long term, it may sell securities regardless of how long they have been held. The Financial Highlights section of this prospectus shows historical turnover rates for the Fund. A turnover rate of 100%, for example, would mean that the Fund had sold and replaced securities valued at 100% of its net assets within a one-year period. The average turnover rate for mid-cap growth funds was approximately 116%, as reported by Morningstar, Inc., on October 31, 2007.


PLAIN TALK ABOUT TURNOVER RATE

Before investing in a mutual fund, you should review its turnover rate. This gives an indication of how transaction costs, which are not included in the fund's expense ratio, could affect the fund's future returns. In general, the greater the volume of buying and selling by the fund, the greater the impact that brokerage commissions and other transaction costs will have on its return. Also, funds with high turnover rates may be more likely to generate capital gains that must be distributed to shareholders as taxable income.

THE FUND AND VANGUARD

The Fund is a member of The Vanguard Group, a family of 37 investment companies with more than 150 funds holding assets in excess of $1.2 trillion. All of the funds that are members of The Vanguard Group share in the expenses associated with administrative services and business operations, such as personnel, office space, equipment, and advertising.

10

Vanguard also provides marketing services to the funds. Although shareholders do not pay sales commissions or 12b-1 distribution fees, each fund (or in the case of a fund with multiple share classes, each share class of the fund) pays its allocated share of The Vanguard Group's marketing costs.


PLAIN TALK ABOUT VANGUARD'S UNIQUE CORPORATE STRUCTURE

The Vanguard Group is truly a MUTUAL mutual fund company. It is owned jointly by the funds it oversees and thus indirectly by the shareholders in those funds. Most other mutual funds are operated by management companies that may be owned by one person, by a group of individuals, or by investors who own the management company's stock. The management fees charged by these companies include a profit component over and above the companies' cost of providing services. By contrast, Vanguard provides services to its member funds on an at-cost basis, with no profit component, which helps to keep the funds' expenses low.

INVESTMENT ADVISORS

The Fund uses a multimanager approach. Each advisor independently manages its assigned portion of the Fund's assets, subject to the supervision and oversight of Vanguard and the board of trustees. The Fund's board of trustees designates the proportion of Fund assets to be managed by each advisor and may change these proportions at any time.

. Chartwell Investment Partners, L.P., 1235 Westlakes Drive, Suite 400, Berwyn, PA 19312 is an investment advisory firm founded in 1997. As of October 31, 2007, Chartwell managed approximately $6.2 billion in assets.

. William Blair & Company, L.L.C., 222 West Adams Street, Chicago, IL 60606, is an independently owned full-service investment management firm founded in 1935. The firm manages assets for mutual funds, public and private employee benefit plans, foundations, endowments, institutions, and separate accounts. As of October 31, 2007, William Blair & Company managed approximately $49.5 billion in assets.

The Fund pays each of its investment advisors on a quarterly basis. For each advisor, the quarterly fee is based on certain annual percentage rates applied to the average daily net assets managed by the advisor for each quarter. In addition, the quarterly fees paid to each advisor are increased or decreased based on the advisor's performance compared with that of a benchmark index. For these purposes, the cumulative total return of the Chartwell portion of the Fund over a 36-month period, and the William Blair portion of the Fund over a 60-month period, are compared with the cumulative total return of the Russell Midcap Growth Index over the same period.

11

For the fiscal year ended October 31, 2007, the advisory fee represented an effective annual rate of 0.24% of the Fund's average net assets before a performance-based increase of 0.03%.

Under the terms of an SEC exemption, the Fund's board of trustees may, without prior approval from shareholders, change the terms of an advisory agreement or hire a new investment advisor--either as a replacement for an existing advisor or as an additional advisor. Any significant change in the Fund's advisory arrangements will be communicated to shareholders in writing. In addition, as the Fund's sponsor and overall manager, The Vanguard Group may provide investment advisory services to the Fund, on an at-cost basis, at any time. Vanguard may also recommend to the board of trustees that an advisor be hired, terminated, or replaced, or that the terms of an existing advisory agreement be revised.

For a discussion of why the board of trustees approved the Fund's investment advisory agreements, see the most recent annual report to shareholders covering the fiscal year ended October 31.

12


PLAIN TALK ABOUT THE FUND'S PORTFOLIO MANAGERS

The managers primarily responsible for the day-to-day management of the Fund are:

EDWARD N. ANTOIAN, CFA, Managing Partner and one of the Founders of Chartwell in 1997. He has managed equity funds since 1984 and has overseen management of the Chartwell portion of the Fund since 2006. Education: B.S., State University of New York; M.B.A., University of Pennsylvania.

MARK J. CUNNEEN, CPA, Senior Portfolio Manager at Chartwell. He has worked in investment management since 1986; has managed equity funds since 1992; has been with Chartwell since 2003; and has served as senior portfolio manager of the Chartwell portion of the Fund since 2006. Education: B.S., University of Notre Dame; M.B.A., University of Pennsylvania.

HARVEY H. BUNDY, CFA, Principal at William Blair & Company. He has worked in investment management at William Blair & Company since 1968; has managed equity funds since 1998; is a co-manager of William Blair & Company's Mid-Cap Growth Team and also serves on the Small-Mid Cap Growth Team, which he cofounded in 1998; and has co-managed the William Blair & Company portion of the Fund since 2006. Education: A.B., Yale University; M.B.A., Amos Tuck School of Business Administration at Dartmouth.

ROBERT C. LANPHIER, Principal at William Blair & Company. He has worked in investment management at William Blair & Company since 1987; has managed equity funds since 1996; co-founded William Blair & Company's Mid-Cap Growth Team strategy in 1997 and the Small-Mid Cap Growth Team strategy in 1998, and currently serves as a portfolio manager on both strategies; and has co-managed the William Blair & Company portion of the Fund since 2006. Education: B.S., Purdue University; M.B.A., Kellogg School of Management at Northwestern University.

DAVID RICCI, CFA, Principal at William Blair & Company. He has worked in investment management at William Blair & Company since 1994; is a co-manager of William Blair & Company's Mid-Cap Growth Team; previously worked for 11 years as an analyst in the Research Department; has managed equity funds since 2005; and has co-managed the William Blair & Company portion of the Fund since 2006. Education: Sc.B., Brown University; M.B.A., Harvard Business School.

The Statement of Additional Information provides information about each portfolio manager's compensation, other accounts under management, and ownership of securities in the Fund.

13

DIVIDENDS, CAPITAL GAINS, AND TAXES

The Fund distributes to shareholders virtually all of its net income (interest and dividends, less expenses) as well as any net capital gains realized from the sale of its holdings. Distributions generally occur annually in December.

Your distributions will be reinvested in additional Fund shares and accumulate on a tax-deferred basis if you are investing through an employer-sponsored retirement or savings plan. You will not owe taxes on these distributions until you begin withdrawals from the plan. You should consult your plan administrator, your plan's Summary Plan Description, or your tax advisor about the tax consequences of plan withdrawals.


PLAIN TALK ABOUT DISTRIBUTIONS

As a shareholder, you are entitled to your portion of a fund's income from interest and dividends as well as gains from the sale of investments. Income consists of both the dividends that the fund earns from any stock holdings and the interest it receives from any money market and bond investments. Capital gains are realized whenever the fund sells securities for higher prices than it paid for them. These capital gains are either short-term or long-term, depending on whether the fund held the securities for one year or less or for more than one year. You receive the fund's earnings as either a dividend or capital gains distribution.

14

SHARE PRICE

The Fund's share price, called its net asset value, or NAV, is calculated each business day as of the close of regular trading on the New York Stock Exchange, generally 4 p.m., Eastern time. NAV per share is computed by dividing the net assets of the Fund by the number of Fund shares outstanding. On holidays or other days when the Exchange is closed, the NAV is not calculated, and the Fund does not transact purchase or redemption requests. However, on those days the value of the Fund's assets may be affected to the extent that the Fund holds foreign securities that trade on foreign markets that are open.

Stocks held by a Vanguard fund are valued at their market value when reliable market quotations are readily available. Certain short-term debt instruments used to manage a fund's cash are valued on the basis of amortized cost. The values of any foreign securities held by a fund are converted into U.S. dollars using an exchange rate obtained from an independent third party. The values of any mutual fund shares held by a fund are based on the NAVs of the shares. The values of any ETF or closed-end fund shares held by a fund are based on the market value of the shares.

When reliable market quotations are not readily available, securities are priced at their fair value (the amount that the owner might reasonably expect to receive upon the current sale of a security). A fund also will use fair-value pricing if the value of a security it holds has been materially affected by events occurring before the fund's pricing time but after the close of the primary markets or exchanges on which the security is traded. This most commonly occurs with foreign securities, which may trade on foreign exchanges that close many hours before the fund's pricing time. Intervening events might be company-specific (e.g., earnings report, merger announcement); country-specific (e.g., natural disaster, economic or political news, act of terrorism, interest rate change); or global. Intervening events include price movements in U.S. markets that are deemed to affect the value of foreign securities. Fair-value pricing may be used for domestic securities--for example, if (1) trading in a security is halted and does not resume before the fund's pricing time or if a security does not trade in the course of a day, and (2) the fund holds enough of the security that its price could affect the fund's NAV.

Fair-value prices are determined by Vanguard according to procedures adopted by the board of trustees. When fair-value pricing is employed, the prices of securities used by a fund to calculate its NAV may differ from quoted or published prices for the same securities.

Vanguard fund share prices can be found daily in the mutual fund listings of most major newspapers under various "Vanguard" headings.

15

FINANCIAL HIGHLIGHTS

The following financial highlights table is intended to help you understand the Fund's financial performance for the periods shown, and certain information reflects financial results for a single Fund share. The total returns in the table represent the rate that an investor would have earned or lost each period on an investment in the Fund (assuming reinvestment of all distributions). This information has been derived from the financial statements audited by PricewaterhouseCoopers LLP, an independent registered public accounting firm, whose report--along with the Fund's financial statements--is included in the Fund's most recent annual report to shareholders. To receive a free copy of the latest annual or semiannual report, you may access a report online at www.vanguard.com, or you may contact Vanguard by telephone or by mail.


PLAIN TALK ABOUT HOW TO READ THE FINANCIAL HIGHLIGHTS TABLE

The Fund began fiscal year 2007 with a net asset value (price) of $19.12 per share. During the year, the Fund earned $0.044 per share from investment income (interest and dividends) and $4.455 per share from investments that had appreciated in value or that were sold for higher prices than the Fund paid for them.

Shareholders received $2.719 per share in the form of dividend and capital gains distributions. A portion of each year's distributions may come from the prior year's income or capital gains.

The share price at the end of the year was $20.90, reflecting earnings of $4.499 per share and distributions of $2.719 per share. This was an increase of $1.78 per share (from $19.12 at the beginning of the year to $20.90 at the end of the year). For a shareholder who reinvested the distributions in the purchase of more shares, the total return was 26.39% for the year.

As of October 31, 2007, the Fund had approximately $1.3 billion in net assets. For the year, the expense ratio was 0.56% ($5.60 per $1,000 of net assets), and the net investment income amounted to 0.27% of its average net assets. The Fund sold and replaced securities valued at 70% of its net assets.

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MID-CAP GROWTH FUND
 Year Ended October 31,
 -------------------------------------------------------------------------
 2007 2006 2005 2004 2003
--------------------------------------------------------------------------------------------------------------------------------
NET ASSET VALUE, BEGINNING OF PERIOD $19.12 $16.58 $14.28 $14.22 $10.34
--------------------------------------------------------------------------------------------------------------------------------
INVESTMENT OPERATIONS
--------------------------------------------------------------------------------------------------------------------------------
Net Investment Income (Loss) .044 .055 .00 (.01) (.01)
--------------------------------------------------------------------------------------------------------------------------------
Net Realized and Unrealized Gain (Loss) 4.455 2.490 2.30 .07 3.89
on Investments
--------------------------------------------------------------------------------------------------------------------------------
Total from Investment Operations 4.499 2.545 2.30 .06 3.88
--------------------------------------------------------------------------------------------------------------------------------
DISTRIBUTIONS
--------------------------------------------------------------------------------------------------------------------------------
Dividends from Net Investment Income (.044) (.005) -- -- --
--------------------------------------------------------------------------------------------------------------------------------
Distributions from Realized Capital Gains (2.675) -- -- -- --
--------------------------------------------------------------------------------------------------------------------------------
Total Distributions (2.719) (.005) -- -- --
--------------------------------------------------------------------------------------------------------------------------------
NET ASSET VALUE, END OF PERIOD $20.90 $19.12 $16.58 $14.28 $14.22
--------------------------------------------------------------------------------------------------------------------------------

TOTAL RETURN 26.39% 15.35% 16.11% 0.42% 37.52%
--------------------------------------------------------------------------------------------------------------------------------
RATIOS/SUPPLEMENTAL DATA
--------------------------------------------------------------------------------------------------------------------------------
Net Assets, End of Period (Millions) $1,289 $793 $562 $442 $247
--------------------------------------------------------------------------------------------------------------------------------
Ratio of Total Expenses to Average Net Assets/1/ 0.56% 0.50% 0.44% 0.45% 0.63%
--------------------------------------------------------------------------------------------------------------------------------
Ratio of Net Investment Income (Loss) to Average 0.27% 0.26% 0.01% (0.05%) (0.18%)
Net Assets
--------------------------------------------------------------------------------------------------------------------------------
Turnover Rate 70% 159% 80% 102% 106%
--------------------------------------------------------------------------------------------------------------------------------
1 Includes performance-based investment advisory fee increases (decreases) of 0.03% for 2007, (0.04%) for 2006, (0.09%) for
 2005, (0.05%) for 2004, and (0.06%) for 2003.

17

INVESTING WITH VANGUARD

The Fund is an investment option in your retirement or savings plan. Your plan administrator or your employee benefits office can provide you with detailed information on how to participate in your plan and how to elect the Fund as an investment option.

. If you have any questions about the Fund or Vanguard, including those about the Fund's investment objective, strategies, or risks, contact Vanguard's Participant Access Center, toll-free, at 800-523-1188.

. If you have questions about your account, contact your plan administrator or the organization that provides recordkeeping services for your plan.

. Be sure to carefully read each topic that pertains to your transactions with Vanguard.

. Vanguard reserves the right to change these policies without prior notice to shareholders.

INVESTMENT OPTIONS AND ALLOCATIONS
Your plan's specific provisions may allow you to change your investment selections, the amount of your contributions, or how your contributions are allocated among the investment choices available to you. Contact your plan administrator or employee benefits office for more details.

TRANSACTIONS
Contribution, exchange, or redemption requests must be in good order. Good order means that your request includes complete information on your contribution, exchange, or redemption, and that Vanguard has received the appropriate assets.

In all cases, your transaction will be based on the Fund's next-determined NAV after Vanguard receives your request (or, in the case of new contributions, the next-determined NAV after Vanguard receives the order from your plan administrator). As long as this request is received before the close of trading on the New York Stock Exchange, generally 4 p.m., Eastern time, you will receive that day's NAV. This is known as your trade date.

EXCHANGES
The exchange privilege (your ability to redeem shares from one fund to purchase shares of another fund) may be available to you through your plan. Although we make every effort to maintain the exchange privilege, Vanguard reserves the right to revise or terminate this privilege, limit the amount of an exchange, or reject any exchange, at any time, without notice. Because excessive exchanges can disrupt the management of the Vanguard funds and increase their transaction costs, Vanguard places certain limits on the exchange privilege.

18

If you are exchanging out of any Vanguard fund (other than money market funds and short-term bond funds), the following policy applies, regardless of the dollar amount:

You must wait 60 days before exchanging back into the fund. The 60-day clock restarts after every exchange out of the fund.

The policy does not apply to the following:

. Exchange requests submitted by mail to Vanguard. (Exchange requests submitted by fax or wire are not mail requests and remain subject to the policy.)

. Purchases of shares with participant payroll or employer contributions or loan repayments.

. Purchases of shares with reinvested dividend or capital gains distributions.

. Distributions, loans, and in-service withdrawals from a plan.

. Redemptions of shares as part of a plan termination or at the direction of the plan.

. Redemptions of shares to pay fund or account fees.

. Share or asset transfers or rollovers.

. Re-registrations of shares within the same fund.

. Conversions of shares from one share class to another in the same fund.

. Automated transactions executed during the first six months of a participant's enrollment in the Vanguard Managed Account Program.

Before making an exchange to or from another fund available in your plan, consider the following:

. Certain investment options, particularly funds made up of company stock or investment contracts, may be subject to unique restrictions.

. Be sure to read that fund's prospectus. Contact Vanguard's Participant Access Center, toll-free, at 800-523-1188 for a copy.

. Vanguard can accept exchanges only as permitted by your plan. Contact your plan administrator for details on other exchange policies that apply to your plan.

PLANS FOR WHICH VANGUARD DOES NOT SERVE AS RECORDKEEPER: If Vanguard does not serve as recordkeeper for your plan, your plan's recordkeeper will establish accounts in Vanguard funds. In such accounts, we cannot always monitor the trading activity of individual clients. However, we review trading activity at the omnibus level, and if we detect suspicious activity, we will investigate and take appropriate action. If necessary, Vanguard may prohibit additional purchases of fund shares by an intermediary or by certain of the intermediary's clients. Intermediaries may also monitor participants' trading activity in the Vanguard funds.

19

For those Vanguard funds that charge purchase or redemption fees, intermediaries that establish accounts in the Vanguard funds will be asked to assess purchase and redemption fees on participant accounts and remit these fees to the funds. The application of purchase and redemption fees and frequent-trading policies may vary among intermediaries. There are no assurances that Vanguard will successfully identify all intermediaries or that intermediaries will properly assess purchase and redemption fees or administer frequent-trading policies. If a firm other than Vanguard serves as recordkeeper for your plan, please read that firm's materials carefully to learn of any other rules or fees that may apply.

PORTFOLIO HOLDINGS

We generally post on our website at www.vanguard.com, in the HOLDINGS section of the Fund's Profile page, a detailed list of the securities held by the Fund (under PORTFOLIO HOLDINGS), as of the most recent calendar-quarter-end. This list is generally updated within 30 days after the end of each calendar quarter. Vanguard may exclude any portion of these portfolio holdings from publication when deemed in the best interest of the Fund. We also generally post the ten largest stock portfolio holdings of the Fund and the percentage of the Fund's total assets that each of these holdings represents, as of the most recent calendar-quarter-end. This list is generally updated within 15 calendar days after the end of each calendar quarter. Please consult the Fund's Statement of Additional Information or our website for a description of the policies and procedures that govern disclosure of the Fund's portfolio holdings.

20

ACCESSING FUND INFORMATION BY COMPUTER

VANGUARD ON THE WORLD WIDE WEB WWW.VANGUARD.COM
Use your personal computer to visit Vanguard's education-oriented website, which provides timely news and information about Vanguard funds and services; the online Education Center that offers a variety of mutual fund classes; and easy-to-use, interactive tools to help you create your own investment and retirement strategies.

Vanguard, Connect with Vanguard, Plain Talk, Vanguard ETF, and the ship logo are trademarks of The Vanguard Group, Inc. All other marks are the exclusive property of their respective owners.

21

GLOSSARY OF INVESTMENT TERMS

CAPITAL GAINS DISTRIBUTION. Payment to mutual fund shareholders of gains realized on securities that a fund has sold at a profit, minus any realized losses.

CASH INVESTMENTS. Cash deposits, short-term bank deposits, and money market instruments that include U.S. Treasury bills and notes, bank certificates of deposit (CDs), repurchase agreements, commercial paper, and banker's acceptances.

COMMON STOCK. A security representing ownership rights in a corporation. A stockholder is entitled to share in the company's profits, some of which may be paid out as dividends.

DIVIDEND DISTRIBUTION. Payment to mutual fund shareholders of income from interest or dividends generated by a fund's investments.

EXPENSE RATIO. The percentage of a fund's average net assets used to pay its expenses during a fiscal year. The expense ratio includes management expenses--such as advisory fees, account maintenance, reporting, accounting, legal, and other administrative expenses--and any 12b-1 distribution fees. It does not include the transaction costs of buying and selling portfolio securities.

GROWTH FUND. A mutual fund that emphasizes stocks of companies believed to have above-average potential for growth in revenue, earnings, cash flow, or other similar criteria. These stocks typically have low dividend yields and above-average prices in relation to such measures as earnings and book value.

INCEPTION DATE. The date on which the assets of a fund (or one of its share classes) are first invested in accordance with the fund's investment objective. For funds with a subscription period, the inception date is the day after that period ends. Investment performance is measured from the inception date.

INVESTMENT ADVISOR. An organization that is responsible for making the day-to-day decisions regarding a fund's investments.

MEDIAN MARKET CAP. An indicator of the size of companies in which a fund invests; the midpoint of market capitalization (market price x shares outstanding) of a fund's stocks, weighted by the proportion of the fund's assets invested in each stock. Stocks representing half of the fund's assets have market capitalizations above the median, and the rest are below it.

MUTUAL FUND. An investment company that pools the money of many people and invests it in a variety of securities in an effort to achieve a specific objective over time.

NET ASSET VALUE (NAV). The market value of a mutual fund's total assets, minus liabilities, divided by the number of shares outstanding. The value of a single share is also called its share value or share price.

22

PRINCIPAL. The face value of a debt instrument or the amount of money put into an investment.

SECURITIES. Stocks, bonds, money market instruments, and other investment vehicles.

TOTAL RETURN. A percentage change, over a specified time period, in a mutual fund's net asset value, assuming the reinvestment of all distributions of dividends and capital gains.

VALUE FUND. A mutual fund that emphasizes stocks whose prices typically are below average in relation to such measures as earnings and book value. These stocks often have above-average dividend yields.

VOLATILITY. The fluctuations in value of a mutual fund or other security. The greater a fund's volatility, the wider the fluctuations in its returns.

YIELD. Income (interest or dividends) earned by an investment, expressed as a percentage of the investment's price.

23

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[SHIP LOGO][VANGUARD/(R)/ LOGO]

Institutional Division
P.O. Box 2900
Valley Forge, PA 19482-2900

CONNECT WITH VANGUARD/(R)/ > www.vanguard.com

FOR MORE INFORMATION
If you would like more information about Vanguard Mid-Cap Growth Fund, the following documents are available free upon request:

ANNUAL/SEMIANNUAL REPORTS TO SHAREHOLDERS
Additional information about the Fund's investments is available in the Fund's annual and semiannual reports to shareholders. In the annual report, you will find a discussion of the market conditions and investment strategies that significantly affected the Fund's performance during its last fiscal year.

STATEMENT OF ADDITIONAL INFORMATION (SAI)
The SAI provides more detailed information about the Fund.

The current annual and semiannual reports and the SAI are incorporated by reference into (and are thus legally a part of) this prospectus.

To receive a free copy of the latest annual or semiannual report or the SAI, or to request additional information about the Fund or other Vanguard funds, please visit www.vanguard.com or contact us as follows:

The Vanguard Group
Participant Access Center
P.O. Box 2900
Valley Forge, PA 19482-2900
Telephone: 800-523-1188
Text telephone for people with hearing impairment: 800-749-7273

INFORMATION PROVIDED BY THE SECURITIES AND EXCHANGE COMMISSION (SEC) You can review and copy information about the Fund (including the SAI) at the SEC's Public Reference Room in Washington, DC. To find out more about this public service, call the SEC at 202-551-8090. Reports and other information about the Fund are also available in the EDGAR database on the SEC's Internet site at www.sec.gov, or you can receive copies of this information, for a fee, by electronic request at the following e-mail address: publicinfo@sec.gov, or by writing the Public Reference Section, Securities and Exchange Commission, Washington, DC 20549-0102.

Fund's Investment Company Act file number: 811-07443

(C) 2008 The Vanguard Group, Inc. All rights reserved. Vanguard Marketing Corporation, Distributor.

I301 022008


VANGUARD/(R)/ INTERNATIONAL EXPLORER/TM/ FUND

> PROSPECTUS

INVESTOR SHARES

February 22, 2008


[SHIP LOGO][VANGUARD/(R)/ LOGO]


This prospectus contains financial data for the Fund through the fiscal year ended October 31, 2007.

NEITHER THE SECURITIES AND EXCHANGE COMMISSION NOR ANY STATE SECURITIES COMMISSION HAS APPROVED OR DISAPPROVED OF THESE SECURITIES OR PASSED UPON THE ACCURACY OR ADEQUACY OF THIS PROSPECTUS. ANY REPRESENTATION TO THE CONTRARY IS A CRIMINAL OFFENSE.


CONTENTS

-------------------------------------------------------------------------------
Fund Profile 1 Investing With Vanguard 22
-------------------------------------------------------------------------------
More on the Fund 6 Purchasing Shares 22
-------------------------------------------------------------------------------
 The Fund and Vanguard 14 Redeeming Shares 25
-------------------------------------------------------------------------------
 Investment Advisor 14 Exchanging Shares 29
-------------------------------------------------------------------------------
 Dividends, Capital Gains, and 15 Frequent-Trading Limits 29
 Taxes
-------------------------------------------------------------------------------
 Share Price 18 Other Rules You Should Know 31
-------------------------------------------------------------------------------
Financial Highlights 19 Fund and Account Updates 35
-------------------------------------------------------------------------------
 Contacting Vanguard 37
-------------------------------------------------------------------------------
 Glossary of Investment Terms 39
-------------------------------------------------------------------------------

WHY READING THIS PROSPECTUS IS IMPORTANT
This prospectus explains the investment objective, policies, strategies, and risks associated with the Fund. To highlight terms and concepts important to mutual fund investors, we have provided Plain Talk/(R)/ explanations along the way. Reading the prospectus will help you decide whether the Fund is the right investment for you. We suggest that you keep this prospectus for future reference.


FUND PROFILE

INVESTMENT OBJECTIVE
The Fund seeks to provide long-term capital appreciation.

PRIMARY INVESTMENT STRATEGIES
The Fund invests primarily in the equity securities of small-capitalization companies located outside the United States that the advisor believes offer the potential for capital appreciation. In doing so, the advisor considers, among other things, whether a company is likely to have above-average earnings growth, whether the company's securities are attractively valued, and whether the company has any proprietary advantages.

PRIMARY RISKS
An investment in the Fund could lose money over short or even long periods. You should expect the Fund's share price and total return to fluctuate within a wide range, like the fluctuations of the overall stock market. The Fund's performance could be hurt by:

. Stock market risk, which is the chance that stock prices overall will decline. Stock markets tend to move in cycles, with periods of rising prices and periods of falling prices. In addition, investments in foreign stock markets can be riskier than U.S. stock investments. The prices of foreign stocks and the prices of U.S. stocks have, at times, moved in opposite directions.

. Country/regional risk, which is the chance that world events--such as political upheaval, financial troubles, or natural disasters will adversely affect the value of securities issued by companies in certain foreign countries or regions. Because the Fund may invest a large portion of its assets in securities of companies located in any one country or region, its performance may be hurt disproportionately by the poor performance of its investments in that area. Country/regional risk is especially high in emerging markets.

. Currency risk, which is the chance that the value of a foreign investment, measured in U.S. dollars, will decrease because of unfavorable changes in currency exchange rates.

. Investment style risk, which is the chance that returns from non-U.S. small-capitalization growth stocks will trail returns from the overall stock market. Historically, non-U.S. small-cap stocks have been more volatile in price than the large-cap stocks that dominate the overall market, and they often perform quite differently.

. Manager risk, which is the chance that poor security selection will cause the Fund to underperform relevant benchmarks or other funds with a similar investment objective.

1

PERFORMANCE/RISK INFORMATION
The following bar chart and table are intended to help you understand the risks of investing in the Fund.* The bar chart shows how the performance of the Fund has varied from one calendar year to another over the periods shown. The table shows how the average annual total returns compare with those of a relevant market index. Keep in mind that the Fund's past performance (before and after taxes) does not indicate how the Fund will perform in the future.

* Prior to June 29, 2002, Vanguard International Explorer Fund was organized as Schroder International Smaller Companies Fund (Schroder Fund) and was sponsored by Schroder Investment Management North America Inc., its investment advisor. A reorganization brought the Fund into The Vanguard Group; the Fund maintains the same investment advisor and substantially similar investment objective, strategies, and policies.

ANNUAL TOTAL RETURNS

BAR CHART
[-50% to 125%]

 1998 25.98%
 1999 90.29%
 2000 -2.68%
 2001 -22.52%
 2002 -13.88%
 2003 57.37%
 2004 31.77%
 2005 20.49%
 2006 30.34%
 2007 5.15%
------------------------------------------------------------

During the periods shown in the bar chart, the highest return for a calendar quarter was 27.66% (quarter ended June 30, 2003), and the lowest return for a quarter was -20.31% (quarter ended September 30, 2001).

2

AVERAGE ANNUAL TOTAL RETURNS FOR PERIODS ENDED DECEMBER 31, 2007
 1 Year 5 Years 10 Years
--------------------------------------------------------------------------------------------------------------------
VANGUARD INTERNATIONAL EXPLORER FUND
--------------------------------------------------------------------------------------------------------------------
Return Before Taxes 5.15% 27.92% 18.22%
--------------------------------------------------------------------------------------------------------------------
Return After Taxes on Distributions 2.11 26.08 15.77
--------------------------------------------------------------------------------------------------------------------
Return After Taxes on Distributions and Sale
of Fund Shares 6.22 24.50 15.11
--------------------------------------------------------------------------------------------------------------------
S&P/CITIGROUP EXTENDED MARKET EUROPE AND PACIFIC
(EM EPAC) INDEX/1/
(reflects no deduction for fees or expenses) 5.85% 27.10% 12.32%
--------------------------------------------------------------------------------------------------------------------
1 The S&P/Citigroup EM EPAC Index measures the performance of the smallest
 companies from the 24 European and Pacific countries represented in the
 S&P/Citigroup EPAC Broad Market Index. The EM EPAC Index represents companies
 whose assets place them in the bottom 20% of the total market capital of each
 country. (Prior to April 7, 2003, the Index was known as the Salomon Smith Barney
 EM EPAC Index, and from April 7 through November 11, 2003, the Index was known as
 the Citigroup EM EPAC Index.) Index returns are adjusted for withholding taxes
 applicable to U.S.-based mutual funds organized as Delaware statutory trusts.
 Since April 1, 2007, the Index returns are adjusted for withholding taxes
 applicable to Luxembourg holding companies.

NOTE ON AFTER-TAX RETURNS. Actual after-tax returns depend on your tax situation and may differ from those shown in the preceding table. When after-tax returns are calculated, it is assumed that the shareholder was in the highest federal marginal income tax bracket at the time of each distribution of income or capital gains or upon redemption. State and local income taxes are not reflected in the calculations. Please note that after-tax returns will differ among a fund's share classes only to the extent that expense ratios differ. After-tax returns are not relevant for a shareholder who holds fund shares in a tax-deferred account, such as an individual retirement account or a 401(k) plan. Also, figures captioned Return After Taxes on Distributions and Sale of Fund Shares will be higher than other figures for the same period if a capital loss occurs upon redemption and results in an assumed tax deduction for the shareholder.

FEES AND EXPENSES

The following table describes the fees and expenses you may pay if you buy and hold shares of the Fund. As is the case with all mutual funds, transaction costs incurred by the Fund for buying and selling securities are not reflected in the table. However, these costs are reflected in the investment performance figures included in this prospectus. The expenses shown under Annual Fund Operating Expenses are based on those incurred in the fiscal year ended October 31, 2007.

3

SHAREHOLDER FEES
(Fees paid directly from your investment)

--------------------------------------------------------------------------------
Sales Charge (Load) Imposed on Purchases None
--------------------------------------------------------------------------------
Purchase Fee None
--------------------------------------------------------------------------------
Sales Charge (Load) Imposed on Reinvested Dividends None
--------------------------------------------------------------------------------
Redemption Fee 2%/1/
--------------------------------------------------------------------------------
Account Service Fee (for fund account balances below $10,000) $20/Year/2/
--------------------------------------------------------------------------------

ANNUAL FUND OPERATING EXPENSES
(Expenses deducted from the Fund's assets)

--------------------------------------------------------------------------------
Management Expenses 0.29%
--------------------------------------------------------------------------------
12b-1 Distribution Fee None
--------------------------------------------------------------------------------
Other Expenses 0.06%
--------------------------------------------------------------------------------
Total Annual Fund Operating Expenses 0.35%
--------------------------------------------------------------------------------

1 The 2% fee applies to shares redeemed within two months of purchase by selling or by exchanging to another fund, or if your shares are redeemed because your Fund account balance falls below the minimum initial investment for any reason, including market fluctuation. The fee is withheld from redemption proceeds and retained by the Fund. Shares held for two months or more are not subject to the 2% fee.
2 If applicable, the account service fee will be collected by redeeming fund shares in the amount of $20.

The following example is intended to help you compare the cost of investing in the Fund with the cost of investing in other mutual funds. It illustrates the hypothetical expenses that you would incur over various periods if you invest $10,000 in the Fund's shares. This example assumes that the Fund provides a return of 5% a year and that operating expenses remain the same. The results apply whether or not you redeem your investment at the end of the given period.

1 Year 3 Years 5 Years 10 Years
--------------------------------------------------------------------
$36 $113 $197 $443
--------------------------------------------------------------------

THIS EXAMPLE SHOULD NOT BE CONSIDERED TO REPRESENT ACTUAL EXPENSES OR PERFORMANCE FROM THE PAST OR FOR THE FUTURE. ACTUAL FUTURE EXPENSES MAY BE HIGHER OR LOWER THAN THOSE SHOWN.

4


PLAIN TALK ABOUT FUND EXPENSES

All mutual funds have operating expenses. These expenses, which are deducted from a fund's gross income, are expressed as a percentage of the net assets of the fund. Vanguard International Explorer Fund's expense ratio in fiscal year 2007 was 0.35%, or $3.50 per $1,000 of average net assets. The average international small-cap fund had expenses in 2006 of 1.71%, or $17.10 per $1,000 of average net assets (derived from data provided by Lipper Inc., which reports on the mutual fund industry). Management expenses, which are one part of operating expenses, include investment advisory fees as well as other costs of managing a fund--such as account maintenance, reporting, accounting, legal, and other administrative expenses.


PLAIN TALK ABOUT COSTS OF INVESTING

Costs are an important consideration in choosing a mutual fund. That's because you, as a shareholder, pay the costs of operating a fund, plus any transaction costs incurred when the fund buys or sells securities. These costs can erode a substantial portion of the gross income or the capital appreciation a fund achieves. Even seemingly small differences in expenses can, over time, have a dramatic effect on a fund's performance.

Additional Information
As of October 31, 2007
-------------------------------------------------------------------------------------------
Net Assets $3.3 billion
-------------------------------------------------------------------------------------------
Investment Advisor Schroder Investment Management North America Inc., New York,
 N.Y., since inception
-------------------------------------------------------------------------------------------
Dividends and Capital Gains Distributed annually in December
-------------------------------------------------------------------------------------------
Suitable for IRAs Yes
-------------------------------------------------------------------------------------------
Inception Date November 4, 1996
-------------------------------------------------------------------------------------------
Minimum Initial Investment $25,000 for regular accounts, IRAs, and custodial accounts
 for minors.
-------------------------------------------------------------------------------------------
Newspaper Abbreviation IntlExplr
-------------------------------------------------------------------------------------------
Vanguard Fund Number 126
-------------------------------------------------------------------------------------------
CUSIP Number 921946208
-------------------------------------------------------------------------------------------
Ticker Symbol VINEX
-------------------------------------------------------------------------------------------

5

MORE ON THE FUND

This prospectus describes the primary risks you would face as a Fund shareholder. It is important to keep in mind one of the main axioms of investing: The higher the risk of losing money, the higher the potential reward. The reverse, also, is generally true: The lower the risk, the lower the potential reward. As you consider an investment in any mutual fund, you should take into account your personal tolerance for fluctuations in the securities markets. Look for this FLAG LOGO symbol throughout the prospectus. It is used to mark detailed information about the more significant risks that you would confront as a Fund shareholder.

The following sections explain the primary investment strategies and policies that the Fund uses in pursuit of its objective. The Fund's board of trustees, which oversees the Fund's management, may change investment strategies or policies in the interest of shareholders without a shareholder vote, unless those strategies or policies are designated as fundamental. Note that the Fund's investment objective is not fundamental and may be changed without a shareholder vote.

MARKET EXPOSURE
The Fund invests primarily in the equity securities of smaller companies located outside the United States.

FLAG LOGO
THE FUND IS SUBJECT TO STOCK MARKET RISK, WHICH IS THE CHANCE THAT STOCK PRICES OVERALL WILL DECLINE. STOCK MARKETS TEND TO MOVE IN CYCLES, WITH PERIODS OF RISING PRICES AND PERIODS OF FALLING PRICES. IN ADDITION, INVESTMENTS IN FOREIGN STOCK MARKETS CAN BE RISKIER THAN U.S. STOCK INVESTMENTS. THE PRICES OF FOREIGN STOCKS AND THE PRICES OF U.S. STOCKS HAVE, AT TIMES, MOVED IN OPPOSITE DIRECTIONS.

To illustrate the volatility of international stock prices, the following table shows the best, worst, and average annual total returns for foreign stock markets over various periods as measured by the Morgan Stanley Capital International Europe, Australasia, Far East (MSCI EAFE) Index, a widely used barometer of international market activity. (Total returns consist of dividend income plus change in market price.) Note that the returns shown do not include the costs of buying and selling stocks or other expenses that a real-world investment portfolio would incur.

6

INTERNATIONAL STOCK MARKET RETURNS
(1970-2007)

 1 Year 5 Years 10 Years 20 Years
-------------------------------------------------------------------------
Best 69.4% 36.1% 22.0% 15.5%
-------------------------------------------------------------------------
Worst -23.4 -2.9 4.0 7.4
-------------------------------------------------------------------------
Average 12.9 11.1 11.6 12.3
-------------------------------------------------------------------------

The table covers all of the 1-, 5-, 10-, and 20-year periods from 1970 through 2007. These average returns reflect past performance of international stocks; you should not regard them as an indication of future performance of either foreign markets as a whole or the Fund in particular.

Note that the MSCI EAFE Index does not take into account returns for emerging markets, which can be substantially more volatile, and substantially less liquid, than the more developed markets included in the Index. In addition, because the MSCI EAFE Index tracks the European and Pacific developed markets collectively, the returns in the preceding table do not reflect the variability of returns for these markets individually. To illustrate this variability, the following table shows returns for different international markets--as well as for the U.S. market for comparison--from 1998 through 2007, as measured by their respective indexes.

RETURNS FOR VARIOUS STOCK MARKETS/1/
 European Pacific Emerging U.S.
 Market/2/ Market/2/ Markets/2/ Market
-----------------------------------------------------------------------------------------------------------------------------
1998 28.53% 2.72% -25.34% 28.58%
-----------------------------------------------------------------------------------------------------------------------------
1999 15.89 56.65 66.41 21.04
-----------------------------------------------------------------------------------------------------------------------------
2000 -8.39 -25.78 -30.61 -9.10
-----------------------------------------------------------------------------------------------------------------------------
2001 -19.90 -25.40 -2.62 -11.89
-----------------------------------------------------------------------------------------------------------------------------
2002 -18.38 -9.29 -6.17 -22.10
-----------------------------------------------------------------------------------------------------------------------------
2003 38.54 38.48 55.82 28.68
-----------------------------------------------------------------------------------------------------------------------------
2004 20.88 18.98 25.55 10.88
-----------------------------------------------------------------------------------------------------------------------------
2005 9.42 22.64 34.00 4.91
-----------------------------------------------------------------------------------------------------------------------------
2006 33.72 12.20 32.17 15.79
-----------------------------------------------------------------------------------------------------------------------------
2007 13.86 5.30 39.39 5.49
-----------------------------------------------------------------------------------------------------------------------------
1 European market returns are measured by the MSCI Europe Index; Pacific market returns are measured by the MSCI Pacific
 Index; emerging markets returns are measured by the MSCI Emerging Markets Index; and U.S. market returns are measured by
 the Standard & Poor's 500 Index.
2 Index returns are adjusted for withholding taxes applicable to Luxembourg holding companies.

7

Keep in mind that these returns reflect past performance of the various indexes; you should not consider them as an indication of future performance of the indexes, or of the Fund in particular.


PLAIN TALK ABOUT INTERNATIONAL INVESTING

U.S. investors who invest abroad will encounter risks not typically associated with U.S. companies, because foreign stock and bond markets operate differently from the U.S. markets. For instance, foreign companies are not subject to the same accounting, auditing, and financial-reporting standards and practices as U.S. companies, and their stocks may not be as liquid as those of similar U.S. firms. In addition, foreign stock exchanges, brokers, and companies generally have less government supervision and regulation than their counterparts in the United States. These factors, among others, could negatively affect the returns U.S. investors receive from foreign investments.

FLAG LOGO
The Fund is subject to country/regional risk and currency risk. Country/regional risk is the chance that domestic events--such as political upheaval, financial troubles, or natural disasters--will adversely affect the value of securities issued by companies in certain foreign countries or regions. Because the Fund may invest a large portion of its assets in securities of companies located in any one country or region, its performance may be hurt disproportionately by the poor performance of its investments in that area. Country/regional risk is especially high in emerging markets. Currency risk is the chance that the value of a foreign investment, measured in U.S. dollars, will decrease because of unfavorable changes in currency exchange rates.

The Fund generally emphasizes developed markets in Europe and the Pacific, with a limited allocation to emerging markets. Stocks of emerging-markets countries can be substantially more volatile, and substantially less liquid, than those of both U.S. and more developed foreign markets.

FLAG LOGO
The Fund is subject to investment style risk, which is the chance that returns from non-U.S. small-capitalization growth stocks will trail returns from the overall stock market. Historically, non-U.S. small-cap stocks have been more volatile in price than the large-cap stocks that dominate the overall market, and they often perform quite differently.

8

Stocks of publicly traded companies and funds that invest in stocks are often classified according to market value, or market capitalization. These classifications typically include small-cap, mid-cap, and large-cap. It's important to understand that, for both companies and stock funds, market-capitalization ranges change over time. Also, interpretations of size vary, and there are no "official" definitions of small-, mid-, and large-cap, even among Vanguard fund advisors. The asset-weighted median market capitalization of the Fund as of October 31, 2007, was $2.5 billion.

The Fund invests in companies that are smaller and less well-known than larger, more widely held companies. Small companies tend to be more vulnerable to adverse developments than larger companies. Small companies may have limited product lines, markets, or financial resources, or they may depend on a limited management group. Their securities may trade infrequently and in limited volumes. As a result, the prices of these securities may fluctuate more than the prices of securities of larger, more heavily traded companies. Also, there may be less publicly available information about small companies or less market interest in their securities as compared with larger companies, and it may take longer for the prices of these securities to reflect the full value of their issuers' earnings potential or assets.

SECURITY SELECTION
Schroder Investment Management North America Inc. (Schroders), advisor to the Fund, employs a fundamental investment approach that considers macroeconomic factors while focusing primarily on company-specific factors. These company-specific factors include the company's potential for long-term growth, financial condition, quality of management, and sensitivity to cyclical factors, as well as the relative value of the company's securities (compared with those of other companies and the market as a whole).

The advisor invests the Fund's assets in non-U.S. small-cap companies that it believes offer the potential for capital appreciation. In doing so, Schroders considers, among other things, whether a company is likely to have above-average earnings growth, whether its securities are attractively valued, and whether the company has any proprietary advantages. The Fund generally sells a security when its market price approaches the advisor's estimate of fair value or when the advisor identifies a significantly more attractive investment candidate.

The Fund is generally managed without regard to tax ramifications.

FLAG LOGO
THE FUND IS SUBJECT TO MANAGER RISK, WHICH IS THE CHANCE THAT POOR SECURITY SELECTION WILL CAUSE THE FUND TO UNDERPERFORM RELEVANT BENCHMARKS OR OTHER

FUNDS WITH A SIMILAR INVESTMENT OBJECTIVE.

9


PLAIN TALK ABOUT GROWTH FUNDS AND VALUE FUNDS

Growth investing and value investing are two styles employed by stock-fund managers. Growth funds generally focus on stocks of companies believed to have above-average potential for growth in revenue, earnings, cash flow, or other similar criteria. These stocks typically have low dividend yields and above-average prices in relation to such measures as earnings and book value. Value funds typically emphasize stocks whose prices are below average in relation to those measures; these stocks often have above-average dividend yields. Growth and value stocks have historically produced similar long-term returns, though each category has periods when it outperforms the other.

OTHER INVESTMENT POLICIES AND RISKS
Besides investing in stocks of foreign companies, the Fund may make other kinds of investments to achieve its objective.

The Fund may invest in preferred stocks and closed-end investment companies that invest primarily in foreign securities. With preferred stocks, holders receive set dividends from the issuer; their claim on the issuer's income and assets ranks before that of common-stock holders, but after that of bondholders. The Fund may also invest in convertible securities and warrants. Convertible securities are corporate debt securities that may be converted at either a stated price or a stated rate into underlying shares of common stock. Warrants are securities that permit their owners to purchase a specific number of stock shares at a predetermined price in the future.

The Fund may invest, to a limited extent, in derivatives. Generally speaking, a derivative is a financial contract whose value is based on the value of a financial asset (such as a stock, bond, or currency), a physical asset (such as gold), or a market index (such as the S&P 500 Index). Investments in derivatives may subject the Fund to risks different from, and possibly greater than, those of the underlying securities, assets, or market indexes. The Fund will not use derivatives for speculation or for the purpose of leveraging (magnifying) investment returns.

The Fund may enter into forward foreign currency exchange contracts, which are types of derivative contracts. A forward foreign currency exchange contract is an agreement to buy or sell a country's currency at a specific price on a specific date, usually 30, 60, or 90 days in the future. In other words, the contract guarantees an exchange rate on a given date. Managers of funds that invest in foreign securities use these contracts to guard against sudden, unfavorable changes in the U.S. dollar/foreign currency exchange rates. These contracts, however, will not prevent the Fund's securities from falling in value during foreign market downswings.

10


PLAIN TALK ABOUT DERIVATIVES

Derivatives can take many forms. Some forms of derivatives, such as exchange-traded futures and options on securities, commodities, or indexes, have been trading on regulated exchanges for decades. These types of derivatives are standardized contracts that can easily be bought and sold, and whose market values are determined and published daily. Nonstandardized derivatives (such as swap agreements), on the other hand, tend to be more specialized or complex, and may be harder to value.

CASH MANAGEMENT

The Fund's daily cash balance may be invested in one or more Vanguard CMT Funds, which are very low-cost money market funds. When investing in a Vanguard CMT Fund, the Fund bears its proportionate share of the at-cost expenses of the CMT Fund in which it invests.

TEMPORARY INVESTMENT MEASURES

The Fund may temporarily depart from its normal investment policies and strategies when doing so is believed to be in the Fund's best interest, so long as the alternative is consistent with the Fund's investment objective. For instance, the Fund may invest beyond the normal limits in derivatives or ETFs that are consistent with the Fund's objective when those instruments are more favorably priced or provide needed liquidity, as might be the case when the Fund is transitioning assets from one advisor to another or receives large cash flows that it cannot prudently invest immediately.

In addition, the Fund may take temporary defensive positions that are inconsistent with its normal investment policies and strategies--for instance, by allocating substantial assets to cash, commercial paper, or other less volatile instruments--in response to adverse or unusual market, economic, political, or other conditions. In doing so, the Fund may succeed in avoiding losses but may otherwise fail to achieve its investment objective.

11

REDEMPTION AND ACCOUNT SERVICE FEES
The Fund charges a 2% fee on shares that are redeemed before they have been held for two months. The fee applies if your shares are redeemed by selling or by exchanging to another Vanguard fund, or if your shares are redeemed because your Fund account balance falls below the minimum initial investment for any reason, including market fluctuation.

Unlike a sales charge or a load paid to a broker or a fund management company, the redemption fee is paid directly to the Fund to offset the costs of buying and selling securities. The fee is designed to ensure that short-term investors pay their share of the Fund's transaction costs and that long-term investors do not subsidize the activities of short-term traders.

An account service fee of $20 per year applies to certain fund accounts whose balances are less than $10,000.

See the FUND PROFILE and INVESTING WITH VANGUARD for more information about fees.

FREQUENT TRADING OR MARKET-TIMING
BACKGROUND. Some investors try to profit from strategies involving frequent trading of mutual fund shares, such as market-timing. For funds holding foreign securities, investors may try to take advantage of an anticipated difference between the price of the fund's shares and price movements in overseas markets, a practice also known as time-zone arbitrage. Investors also may try to engage in frequent trading of funds holding investments such as small-cap stocks and high-yield bonds. As money is shifted into and out of a fund by a shareholder engaging in frequent trading, a fund incurs costs for buying and selling securities, resulting in increased brokerage and administrative costs. These costs are borne by all fund shareholders, including the long-term investors who do not generate the costs. In addition, frequent trading may interfere with an advisor's ability to efficiently manage the fund.

POLICIES TO ADDRESS FREQUENT TRADING. The Vanguard funds (other than money market funds, short-term bond funds, and Vanguard ETF(TM) Shares) do not knowingly accommodate frequent trading. The board of trustees of each Vanguard fund has adopted policies and procedures reasonably designed to detect and discourage frequent trading and, in some cases, to compensate the fund for the costs associated with it. Although there is no assurance that Vanguard will be able to detect or prevent frequent trading or market-timing in all circumstances, the following policies have been adopted to address these issues:

. Each Vanguard fund reserves the right to reject any purchase request--including exchanges from other Vanguard funds--without notice and regardless of size. For example, a purchase request could be rejected if Vanguard determines that such

12

purchase may negatively affect a fund's operation or performance or because of a history of frequent trading by the investor.

. Each Vanguard fund (other than money market funds, short-term bond funds, and ETF Shares) generally prohibits, except as otherwise noted in the INVESTING WITH VANGUARD section, an investor's purchases or exchanges into a fund account for 60 calendar days after the investor has redeemed or exchanged out of that fund account.

. Certain Vanguard funds charge shareholders purchase and/or redemption fees on transactions.

See the INVESTING WITH VANGUARD section of this prospectus for further details on Vanguard's transaction policies.

Each fund (other than money market funds), in determining its net asset value, will, when appropriate, use fair-value pricing as described in the SHARE PRICE section. Fair-value pricing may reduce or eliminate the profitability of certain frequent-trading strategies.

DO NOT INVEST WITH VANGUARD IF YOU ARE A MARKET-TIMER.

TURNOVER RATE

Although the Fund normally seeks to invest for the long term, it may sell securities regardless of how long they have been held. The FINANCIAL HIGHLIGHTS section of this prospectus shows historical turnover rates for the Fund. A turnover rate of 100%, for example, would mean that the Fund had sold and replaced securities valued at 100% of its net assets within a one-year period. The average turnover rate for international stock funds was approximately 72%, as reported by Morningstar, Inc., on October 31, 2007.


PLAIN TALK ABOUT TURNOVER RATE

Before investing in a mutual fund, you should review its turnover rate. This gives an indication of how transaction costs, which are not included in the fund's expense ratio, could affect the fund's future returns. In general, the greater the volume of buying and selling by the fund, the greater the impact that brokerage commissions and other transaction costs will have on its return. Also, funds with high turnover rates may be more likely to generate capital gains that must be distributed to shareholders as taxable income.

13

THE FUND AND VANGUARD

The Fund is a member of The Vanguard Group, a family of 37 investment companies with more than 150 funds holding assets in excess of $1.2 trillion. All of the funds that are members of The Vanguard Group share in the expenses associated with administrative services and business operations, such as personnel, office space, equipment, and advertising.

Vanguard also provides marketing services to the funds. Although shareholders do not pay sales commissions or 12b-1 distribution fees, each fund (or in the case of a fund with multiple share classes, each share class of the fund) pays its allocated share of The Vanguard Group's marketing costs.


PLAIN TALK ABOUT VANGUARD'S UNIQUE CORPORATE STRUCTURE

The Vanguard Group is truly a mutual mutual fund company. It is owned jointly by the funds it oversees and thus indirectly by the shareholders in those funds. Most other mutual funds are operated by management companies that may be owned by one person, by a group of individuals, or by investors who own the management company's stock. The management fees charged by these companies include a profit component over and above the companies' cost of providing services. By contrast, Vanguard provides services to its member funds on an at-cost basis, with no profit component, which helps to keep the funds' expenses low.

INVESTMENT ADVISOR

Schroder Investment Management North America Inc. (Schroders), 875 Third Avenue, 22nd Floor, New York, NY 10022-6225, has been a registered investment advisor, together with its predecessor, since 1968, and is part of a worldwide group of financial services companies known as The Schroder Group. Schroders currently serves as investment advisor to the Fund, other mutual funds, and a broad range of institutional investors. As of October 31, 2007, Schroders, together with its affiliated companies, managed approximately $280.5 billion in assets. Schroder Investment Management North America Ltd. (Schroder Limited), 31 Gresham Street, London, EC2V 7QA, England, has served as the sub-advisor for the Fund since April 1, 2003.

The Schroder International Smallcap Investment Committee is responsible for the management of the Fund. The Committee, composed of senior small-cap specialists, determines the regional allocation of the Fund. Stock selection is primarily the responsibility of senior regional small-cap portfolio managers.

14

Schroders' advisory fee is paid quarterly and is based on certain annual percentage rates applied to the Fund's average daily net assets for each quarter. In addition, the firm's advisory fee may be increased or decreased, based on the cumulative total return of the Fund over a trailing 36-month period as compared with that of the S&P/ Citigroup EM EPAC Index over the same period. Schroders pays 25% of its advisory fee to Schroder Limited for providing sub-advisory services.

For the fiscal year ended October 31, 2007, the advisory fee represented an effective annual rate of 0.18% of the Fund's average net assets.

Under the terms of an SEC exemption, the Fund's board of trustees may, without prior approval from shareholders, change the terms of an advisory agreement or hire a new investment advisor--either as a replacement for an existing advisor or as an additional advisor. Any significant change in the Fund's advisory arrangements will be communicated to shareholders in writing. In addition, as the Fund's sponsor and overall manager, The Vanguard Group may provide investment advisory services to the Fund, on an at-cost basis, at any time. Vanguard may also recommend to the board of trustees that an advisor be hired, terminated, or replaced, or that the terms of an existing advisory agreement be revised.

For a discussion of why the board of trustees approved the Fund's investment advisory agreement, see the most recent annual report to shareholders covering the fiscal year ended on October 31.


PLAIN TALK ABOUT THE FUND'S PORTFOLIO MANAGER

The manager primarily responsible for the day-to-day management of the Fund is:

Matthew Dobbs, Chair of the Schroder International Smallcap Investment Committee and Portfolio Manager on the EAFE team. He has been with Schroders since 1981 and has managed the Fund since 2000. Education: B.A., Worcester College, Oxford University.

The Statement of Additional Information provides information about the portfolio manager's compensation, other accounts under management, and ownership of securities in the Fund.

DIVIDENDS, CAPITAL GAINS, AND TAXES

FUND DISTRIBUTIONS
The Fund distributes to shareholders virtually all of its net income (interest and dividends, less expenses) as well as any net capital gains realized from the sale of its

15

holdings. Distributions generally occur annually in December. You can receive distributions of income or capital gains in cash, or you can have them automatically reinvested in more shares of the Fund.


PLAIN TALK ABOUT DISTRIBUTIONS

As a shareholder, you are entitled to your portion of a fund's income from interest and dividends as well as gains from the sale of investments. Income consists of both the dividends that the fund earns from any stock holdings and the interest it receives from any money market and bond investments. Capital gains are realized whenever the fund sells securities for higher prices than it paid for them. These capital gains are either short-term or long-term, depending on whether the fund held the securities for one year or less or for more than one year. You receive the fund's earnings as either a dividend or capital gains distribution.

BASIC TAX POINTS
Vanguard will send you a statement each year showing the tax status of all your distributions. In addition, investors in taxable accounts should be aware of the following basic tax points:

. Distributions are taxable to you for federal income tax purposes, whether or not you reinvest these amounts in additional Fund shares.

. Distributions declared in December--if paid to you by the end of January--are taxable for federal income tax purposes as if received in December.

. Any dividend and short-term capital gains distributions that you receive are taxable to you as ordinary income for federal income tax purposes. If you are an individual and meet certain holding-period requirements with respect to your Fund shares, you may be eligible for reduced federal tax rates on "qualified dividend income," if any, distributed by the Fund.

. Any distributions of net long-term capital gains are taxable to you as long-term capital gains for federal income tax purposes, no matter how long you've owned shares in the Fund.

. Capital gains distributions may vary considerably from year to year as a result of the Fund's normal investment activities and cash flows.

. A sale or exchange of Fund shares is a taxable event. This means that you may have a capital gain to report as income, or a capital loss to report as a deduction, when you complete your federal income tax return.

. Dividend and capital gains distributions that you receive, as well as your gains or losses from any sale or exchange of Fund shares, may be subject to state and local income taxes.

16

. The Fund may be subject to foreign taxes or foreign tax withholding on dividends, interest, and some capital gains that the Fund receives on foreign securities. You may qualify for an offsetting credit or deduction under U.S. tax laws for any amount designated as your portion of the Fund's foreign tax obligations, provided that you meet certain requirements. See your tax advisor or IRS publications for more information.


PLAIN TALK ABOUT "BUYING A DIVIDEND"

Unless you are investing through a tax-deferred retirement account (such as an IRA), you should consider avoiding a purchase of fund shares shortly before the fund makes a distribution, because doing so can cost you money in taxes. This is known as "buying a dividend." For example: On December 15, you invest $5,000, buying 250 shares for $20 each. If the fund pays a distribution of $1 per share on December 16, its share price will drop to $19 (not counting market change). You still have only $5,000 (250 shares x $19 = $4,750 in share value, plus 250 shares x $1 = $250 in distributions), but you owe tax on the $250 distribution you received--even if you reinvest it in more shares. To avoid "buying a dividend," check a fund's distribution schedule before you invest.

GENERAL INFORMATION
BACKUP WITHHOLDING. By law, Vanguard must withhold 28% of any taxable distributions or redemptions from your account if you do not:

. Provide us with your correct taxpayer identification number;

. Certify that the taxpayer identification number is correct; and

. Confirm that you are not subject to backup withholding.

Similarly, Vanguard must withhold taxes from your account if the IRS instructs us to do so.

FOREIGN INVESTORS. Vanguard funds generally are not sold outside the United States, except to certain qualified investors. If you reside outside the United States, please consult our website at www.vanguard.com and review "Non-U.S. investors." Foreign investors should be aware that U.S. withholding and estate taxes may apply to any investments in Vanguard funds.

INVALID ADDRESSES. If a dividend or capital gains distribution check mailed to your address of record is returned as undeliverable, Vanguard will automatically reinvest all future distributions until you provide us with a valid mailing address.

TAX CONSEQUENCES. This prospectus provides general tax information only. If you are investing through a tax-deferred retirement account, such as an IRA, special tax rules

17

apply. Please consult your tax advisor for detailed information about a fund's tax consequences for you.

SHARE PRICE

The Fund's share price, called its net asset value, or NAV, is calculated each business day as of the close of regular trading on the New York Stock Exchange, generally 4 p.m., Eastern time. NAV per share is computed by dividing the net assets of the Fund by the number of Fund shares outstanding. On holidays or other days when the Exchange is closed, the NAV is not calculated, and the Fund does not transact purchase or redemption requests. However, on those days the value of the Fund's assets may be affected because the Fund holds foreign securities that trade on foreign markets that are open.

Stocks held by a Vanguard fund are valued at their market value when reliable market quotations are readily available. Certain short-term debt instruments used to manage a fund's cash are valued on the basis of amortized cost. The values of any foreign securities held by a fund are converted into U.S. dollars using an exchange rate obtained from an independent third party. The values of any mutual fund shares held by a fund are based on the NAVs of the shares. The values of any ETF or closed-end fund shares held by a fund are based on the market value of the shares.

When reliable market quotations are not readily available, securities are priced at their fair value (the amount that the owner might reasonably expect to receive upon the current sale of a security). A fund also will use fair-value pricing if the value of a security it holds has been materially affected by events occurring before the fund's pricing time but after the close of the primary markets or exchanges on which the security is traded. This most commonly occurs with foreign securities, which may trade on foreign exchanges that close many hours before the fund's pricing time. Intervening events might be company-specific (e.g., earnings report, merger announcement); country-specific (e.g., natural disaster, economic or political news, act of terrorism, interest rate change); or global. Intervening events include price movements in U.S. markets that are deemed to affect the value of foreign securities.

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Fair-value prices are determined by Vanguard according to procedures adopted by the board of trustees. When fair-value pricing is employed, the prices of securities used by a fund to calculate its NAV may differ from quoted or published prices for the same securities.

Vanguard fund share prices can be found daily in the mutual fund listings of most major newspapers under various "Vanguard" headings.

FINANCIAL HIGHLIGHTS

The following financial highlights table is intended to help you understand the Fund's financial performance for the periods shown, and certain information reflects financial results for a single Fund share. The total returns in the table represent the rate that an investor would have earned or lost each period on an investment in the Fund (assuming reinvestment of all distributions). This information has been derived from the financial statements audited by PricewaterhouseCoopers LLP, an independent registered public accounting firm, whose report--along with the Fund's financial statements--is included in the Fund's most recent annual report to shareholders. To receive a free copy of the latest annual or semiannual report, you may access a report online at www.vanguard.com, or you may contact Vanguard by telephone or by mail.

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PLAIN TALK ABOUT HOW TO READ THE FINANCIAL HIGHLIGHTS TABLE

The Fund began fiscal year 2007 with a net asset value (price) of $21.50 per share. During the year, the Fund earned $0.48 per share from investment income (interest and dividends) and $4.95 per share from investments that had appreciated in value or that were sold for higher prices than the Fund paid for them.

Shareholders received $2.23 per share in the form of dividend and capital gains distributions. A portion of each year's distributions may come from the prior year's income or capital gains.

The share price at the end of the year was $24.70, reflecting earnings of $5.43 per share and distributions of $2.23 per share. This was an increase of $3.20 per share (from $21.50 at the beginning of the year to $24.70 at the end of the year). For a shareholder who reinvested the distributions in the purchase of more shares, the total return was 27.18% for the year.

As of October 31, 2007, the Fund had approximately $3.3 billion in net assets. For the year, the expense ratio was 0.35% ($3.50 per $1,000 of net assets), and the net investment income amounted to 1.99% of its average net assets. The Fund sold and replaced securities valued at 45% of its net assets.

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INTERNATIONAL EXPLORER FUND
 Year Ended October 31,
 -------------------------------------------------------------------------------------
 2007 2006 2005 2004 2003
------------------------------------------------------------------------------------------------------------------------------------
NET ASSET VALUE, BEGINNING OF PERIOD $21.50 $17.99 $14.64 $11.89 $8.11
------------------------------------------------------------------------------------------------------------------------------------
INVESTMENT OPERATIONS
------------------------------------------------------------------------------------------------------------------------------------
Net Investment Income .48 .52 .37 .273/1/ .14/1/
------------------------------------------------------------------------------------------------------------------------------------
Net Realized and Unrealized Gain (Loss) on 4.95 4.74 3.51 2.544 3.70
Investments
------------------------------------------------------------------------------------------------------------------------------------
Total from Investment Operations 5.43 5.26 3.88 2.817 3.84
------------------------------------------------------------------------------------------------------------------------------------
DISTRIBUTIONS
------------------------------------------------------------------------------------------------------------------------------------
Dividends from Net Investment Income (.58) (.40) (.24) (.067) (.06)
------------------------------------------------------------------------------------------------------------------------------------
Distributions from Realized Capital Gains (1.65) (1.35) (.29) -- --
------------------------------------------------------------------------------------------------------------------------------------
Total Distributions (2.23 ) (1.75) (.53) (.067) (.06)
------------------------------------------------------------------------------------------------------------------------------------
NET ASSET VALUE, END OF PERIOD $24.70 $21.50 $17.99 $14.64 $11.89
------------------------------------------------------------------------------------------------------------------------------------

TOTAL RETURN/2/ 27.18% 31.31% 27.04% 23.79% 47.70%
------------------------------------------------------------------------------------------------------------------------------------
RATIOS/SUPPLEMENTAL DATA
------------------------------------------------------------------------------------------------------------------------------------
Net Assets, End of Period (Millions) $3,252 $2,668 $2,130 $1,577 $420
------------------------------------------------------------------------------------------------------------------------------------
Ratio of Expenses to Average Net Assets/3/ 0.35% 0.44% 0.50% 0.57% 0.73%
------------------------------------------------------------------------------------------------------------------------------------
Ratio of Net Investment Income to Average 1.99% 2.56% 2.17% 1.96% 1.52%
Net Assets
------------------------------------------------------------------------------------------------------------------------------------
Turnover Rate 45% 32% 38% 21% 60%
------------------------------------------------------------------------------------------------------------------------------------
1 Calculated based on average shares outstanding.
2 Total returns do not reflect the 2% fee assessed on redemptions of shares purchased on or after June 27, 2003, and held for less
 than two months.
3 Includes performance-based investment advisory fee increases (decreases) of 0.00%, 0.02%, 0.02%, 0.00%, and 0.00%.

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INVESTING WITH VANGUARD

This section of the prospectus explains the basics of doing business with Vanguard. Be sure to carefully read each topic that pertains to your relationship with Vanguard. Vanguard reserves the right to change the following policies, without prior notice to shareholders. Please call or check online for current information.

Each fund you hold in an account is a separate "fund account." For example, if you hold three funds in a nonretirement account titled in your own name, two funds in a nonretirement account titled jointly with your spouse, and one fund in an individual retirement account, you have six fund accounts--and this is true even if you hold the same fund in multiple accounts.

PURCHASING SHARES

Vanguard reserves the right, without prior notice, to increase or decrease the minimum amount required to open or maintain a fund account, or to add to an existing fund account.

Investment minimums may differ for certain categories of investors.

ACCOUNT MINIMUMS

TO OPEN AND MAINTAIN AN ACCOUNT. $25,000 for regular accounts, IRAs, and custodial accounts for minors.

TO ADD TO AN EXISTING ACCOUNT. $50 by Automatic Investment Plan; $100 by check, exchange, wire, or electronic bank transfer (other than Automatic Investment Plan).

HOW TO INITIATE A PURCHASE REQUEST
Be sure to check Exchanging Shares, Frequent-Trading Limits, and Other Rules You Should Know before placing your purchase request.

ONLINE. You may open certain types of accounts, request an electronic bank transfer, and make an exchange (using the proceeds from the redemption of shares from one Vanguard fund to simultaneously purchase shares of a different Vanguard fund) through our website at www.vanguard.com if you are a registered user.

BY TELEPHONE. You may call Vanguard to begin the account registration process or request that the account-opening forms be sent to you. You may also request a purchase of shares by wire, by electronic bank transfer, or by an exchange. See Contacting Vanguard.

BY MAIL. You may send your account registration form and check to open a new fund account at Vanguard. To add to an existing fund account, you may send your check with an Invest-by-Mail form (from your account statement) or with a deposit slip (available

22

online). You may also send a written request to Vanguard to add to a fund account or to make an exchange. For a list of Vanguard addresses, see Contacting Vanguard.

HOW TO PAY FOR A PURCHASE
BY ELECTRONIC BANK TRANSFER. You may purchase shares of a Vanguard fund through an electronic transfer of money held in a designated bank account. To establish the electronic bank transfer option on an account, you must designate a bank account online, complete a special form, or fill out the appropriate section of your account registration form. After the option is set up on your account, you can purchase shares by electronic bank transfer on a regular schedule (Automatic Investment Plan) or whenever you wish. Your purchase request can be initiated online, by telephone, or by mail.

BY WIRE. Wiring instructions vary for different types of purchases. Please call Vanguard for instructions and policies on purchasing shares by wire. See Contacting Vanguard.

BY CHECK. You may send a check to make initial or additional purchases to your fund account. Also see How to Initiate a Purchase Request: By mail. Make your check payable to Vanguard and include the appropriate fund number (e.g., Vanguard--126). See Contacting Vanguard.

BY EXCHANGE. You may purchase shares of a Vanguard fund using the proceeds from the simultaneous redemption of shares from another Vanguard fund. You may initiate an exchange online (if you are a registered user of Vanguard.com), by telephone, or by mail. See Exchanging Shares.

Trade Date

The trade date for any purchase request received in good order will depend on the day and time Vanguard receives your request, the manner in which you are paying, and the type of fund you are purchasing. Your purchase will be executed using the fund's NAV as calculated on the trade date. NAVs are calculated only on days the New York Stock Exchange (NYSE) is open for trading (a business day).

For purchases by CHECK into all funds other than money market funds, and for PURCHASES BY EXCHANGES or WIRE into all funds: If the purchase request is received by Vanguard on a business day before the close of regular trading on the NYSE (generally 4 p.m., Eastern time), the trade date will be the same day. If the purchase request is received on a business day after the close of regular trading on the NYSE, or on a nonbusiness day, the trade date will be the next business day.

For purchases by CHECK into money market funds: If the purchase request is received by Vanguard on a business day before the close of regular trading on the NYSE (generally 4 p.m., Eastern time), the trade date will be the next business day. If the purchase request is received on a business day after the close of regular trading on the NYSE, or on a nonbusiness day, the trade date will be the second business day

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following the day Vanguard receives the purchase request. Because money market instruments must be purchased with federal funds and it takes a money market mutual fund one business day to convert check proceeds into federal funds, the trade date will be one business day later than for other funds.

For purchases by electronic bank transfer using an AUTOMATIC INVESTMENT PLAN:
Your trade date generally will be one business day before the date you designated for withdrawal from your bank account.

For purchases by ELECTRONIC BANK TRANSFER not using an Automatic Investment Plan: If the purchase request is received by Vanguard on a business day before 10 p.m., Eastern time, the trade date will be the next business day. If the purchase request is received on a business day after 10 p.m., Eastern time, or on a nonbusiness day, the trade date will be the second business day following the day Vanguard receives the request.

If your purchase request is not accurate and complete, it may be rejected. See Other Rules You Should Know--Good Order.

For further information about purchase transactions, consult our website at www.vanguard.com or see Contacting Vanguard

OTHER PURCHASE RULES YOU SHOULD KNOW

CHECK PURCHASES. All purchase checks must be written in U.S. dollars and must be drawn on a U.S. bank. Vanguard does not accept cash, traveler's checks, or money orders. In addition, Vanguard may refuse "starter checks" and checks that are not made payable to Vanguard.

NEW ACCOUNTS. We are required by law to obtain from you certain personal information that we will use to verify your identity. If you do not provide the information, we may not be able to open your account. If we are unable to verify your identity, Vanguard reserves the right, without prior notice, to close your account or take such other steps as we deem reasonable.

REFUSED OR REJECTED PURCHASE REQUESTS. Vanguard reserves the right to stop selling fund shares or to reject any purchase request at any time and without prior notice, including, but not limited to, purchases requested by exchange from another Vanguard fund. This also includes the right to reject any purchase request because of a history of frequent trading by the investor or because the purchase may negatively affect a fund's operation or performance.

LARGE PURCHASES. Please call Vanguard before attempting to invest a large dollar amount.

NO CANCELLATIONS. Vanguard will not accept your request to cancel any purchase request once processing has begun. Please be careful when placing a purchase request.

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REDEEMING SHARES

HOW TO INITIATE A REDEMPTION REQUEST
Be sure to check Exchanging Shares, Frequent-Trading Limits, and Other Rules You Should Know before placing your redemption request.

ONLINE. You may redeem shares, request an electronic bank transfer, and make an exchange (the purchase of shares of one Vanguard fund using the proceeds of a simultaneous redemption from another Vanguard fund) through our website at www.vanguard.com if you are a registered user.

BY TELEPHONE. You may call Vanguard to request a redemption of shares by wire, by electronic bank transfer, by check, or by an exchange. See Contacting Vanguard.

BY MAIL. You may send a written request to Vanguard to redeem from a fund account or to make an exchange. The request must be in good order. See Contacting Vanguard.

HOW TO RECEIVE REDEMPTION PROCEEDS

BY ELECTRONIC BANK TRANSFER. You may have the proceeds of a fund redemption sent directly to a designated bank account. To establish the electronic bank transfer option, you must designate a bank account online, complete a special form, or fill out the appropriate section of your account registration form. After the option is set up on your account, you can then redeem shares by electronic bank transfer on a regular schedule (Automatic Withdrawal Plan--$50 minimum) or whenever you wish ($100 minimum). Your transaction can be initiated online, by telephone, or by mail if your request is in good order.

BY WIRE. When redeeming from a money market fund or a bond fund, you may instruct Vanguard to wire your redemption proceeds ($1,000 minimum) to a previously designated bank account. Wire redemptions generally are not available for Vanguard's balanced or stock funds. The wire redemption option is not automatic; you must designate a bank account online, complete a special form, or fill out the appropriate section of your account registration form. Vanguard charges a $5 fee for wire redemptions under $5,000.

BY EXCHANGE. You may have the proceeds of a Vanguard fund redemption invested directly in shares of another Vanguard fund. You may initiate an exchange online (if you are a registered user of Vanguard.com), by telephone, or by mail.

BY CHECK. If you have not chosen another redemption method, Vanguard will mail you a redemption check, normally within two business days of your trade date.

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TRADE DATE
The trade date for any redemption request received in good order will depend on the day and time Vanguard receives your request and the manner in which you are redeeming. Your redemption will be executed using the fund's NAV as calculated on the trade date. NAVs are calculated only on days that the NYSE is open for trading (a business day.)

For redemptions by CHECK, EXCHANGE, OR WIRE: If the redemption request is received by Vanguard on a business day before the close of regular trading on the NYSE (generally 4 p.m., Eastern time), the trade date will be the same day. If the redemption request is received on a business day after the close of regular trading on the NYSE, or on a nonbusiness day, the trade date will be on the next business day.

. Note on timing of wire redemptions from money market funds: For telephone requests received by Vanguard on a business day before 10:45 a.m., Eastern time (2 p.m., Eastern time, for Vanguard Prime Money Market Fund), the redemption proceeds will leave Vanguard by the close of business the same day. For telephone requests received by Vanguard on a business day after those cut-off times, or on a nonbusiness day, and for all requests other than by telephone, the redemption proceeds will leave Vanguard by the close of business on the next business day.

. Note on timing of wire redemptions from bond funds: For requests received by Vanguard on a business day before the close of regular trading on the NYSE (generally 4 p.m., Eastern time), the redemption proceeds will leave Vanguard by the close of business on the next business day. For requests received by Vanguard on a business day after the close of regular trading on the NYSE, or on a nonbusiness day, the redemption proceeds will leave Vanguard by the close of business on the second business day after Vanguard receives the request.

For redemptions by electronic bank transfer using an AUTOMATIC WITHDRAWAL PLAN:
Your trade date generally will be the date you designated for withdrawal of funds (redemption of shares) from your Vanguard account. Proceeds of redeemed shares generally will be credited to your designated bank account two business days after your trade date. If the trade date you designated for withdrawal falls on a weekend, holiday, or other nonbusiness day, your trade date will be the previous business day.

For redemptions by ELECTRONIC BANK TRANSFER not using an Automatic Withdrawal Plan: If the redemption request is received by Vanguard on a business day before the close of regular trading on the NYSE (generally 4 p.m., Eastern time), the trade date generally will be the same day. If the redemption request is received on a business day after the close of regular trading on the NYSE, or on a nonbusiness day, the trade date will be the next business day.

26

If your redemption request is not accurate and complete, it may be rejected. See Other Rules You Should Know--Good Order.

For further information about redemption transactions, consult our website at www.vanguard.com or see Contacting Vanguard.

REDEMPTION FEES

The Fund charges a 2% fee on shares redeemed within two months of purchase by selling or by exchanging to another fund, or if your shares are redeemed because your Fund account balance falls below the minimum initial investment for any reason, including market fluctuation.

In an effort to reduce or eliminate the redemption fees you pay, if you redeem less than your full investment in the Fund, we will first redeem those shares not subject to the fee, followed by those shares you have held the longest.

For Vanguard fund accounts (including participants in employer-sponsored defined contribution plans that are served by Vanguard Small Business Services), redemption fees will not apply to the following:

. Redemptions of shares purchased with reinvested dividend and capital gains distributions.

. Share transfers, rollovers, or re-registrations within the same fund.

. Conversions of shares from one share class to another in the same fund.

. Redemptions of shares to pay fund or account fees.

. Redemptions of shares to remove excess shareholder contributions to an IRA.

. Section 529 college savings plans.

. For a one-year period, shares rolled over to an IRA held at Vanguard from a retirement plan for which Vanguard serves as recordkeeper (except for Vanguard Small Business Services retirement plans).

. Distributions by shareholders age 701/2 or older from the following:

. Traditional IRAs.

. Inherited IRAs (traditional and Roth).

. Rollover IRAs.

. SEP-IRAs.

. SIMPLE IRAs.

. Section 403(b)(7) plans served by the Vanguard Small Business Services Department.

. Vanguard Retirement Plans for which Vanguard Fiduciary Trust Company serves as trustee.

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For participants in employer-sponsored defined contribution plans (other than those served by the Vanguard Small Business Services Department), in addition to the exclusions previously listed, redemption fees will not apply to the following:

. Exchanges of shares purchased with participant payroll or employer contributions.

. Distributions, loans, and in-service withdrawals from a plan.

. Redemptions or transfers of shares as part of a plan termination or at the direction of the plan.

. Direct rollovers into IRAs.

Redemption fees will apply to shares exchanged out of a fund within the fund's redemption-fee period into which fund the shares had previously been exchanged, rolled over, or transferred by a participant.

If Vanguard does not serve as recordkeeper for your plan, redemption fees may be applied differently. Please read your recordkeeper's plan materials carefully to learn of any other rules or fees that may apply. Also see Frequent-Trading Limits--Accounts Held by Intermediaries for information about the assessment of redemption fees by intermediaries.

OTHER REDEMPTION RULES YOU SHOULD KNOW
DOCUMENTATION FOR CERTAIN ACCOUNTS. Special documentation may be required to redeem from certain types of accounts, such as trust, corporate, nonprofit, or retirement accounts. Please call us before attempting to redeem from these types of accounts.

POTENTIALLY DISRUPTIVE REDEMPTIONS. Vanguard reserves the right to pay all or part of a redemption in kind--that is, in the form of securities--if we reasonably believe that a cash redemption would negatively affect the fund's operation or performance or that the shareholder may be engaged in market-timing or frequent trading. Under these circumstances, Vanguard also reserves the right to delay payment of the redemption proceeds for up to seven calendar days. By calling us before you attempt to redeem a large dollar amount, you may avoid in-kind or delayed payment of your redemption. Please see Frequent-Trading Limits for information about Vanguard's policies to limit frequent trading.

RECENTLY PURCHASED SHARES. Although you can redeem shares at any time, proceeds may not be made available to you until the fund collects payment for your purchase. This may take up to ten calendar days for shares purchased by check or by electronic bank transfer. If you have written a check on a fund with checkwriting privileges, that check may be rejected if your fund account does not have a sufficient available balance.

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SHARE CERTIFICATES. If you hold shares in certificates, those shares cannot be redeemed, exchanged, or converted until you return the certificates (unsigned) to Vanguard by registered mail. For the correct address, see Contacting Vanguard.

ADDRESS CHANGE. If you change your address online or by telephone, there may be a 15-day restriction on your ability to make online and telephone redemptions. You can request a redemption in writing at any time. Confirmations of address changes are sent to both the old and new addresses.

PAYMENT TO A DIFFERENT PERSON OR ADDRESS. At your request, we can make your redemption check payable to a different person or send it to a different address. However, this requires the written consent of all registered account owners and may require a signature guarantee. You can obtain a signature guarantee from most commercial and savings banks, credit unions, trust companies, or member firms of a U.S. stock exchange. A notary public cannot provide a signature guarantee.

NO CANCELLATIONS. Vanguard will not accept your request to cancel any redemption request once processing has begun. Please be careful when placing a redemption request.

EMERGENCY CIRCUMSTANCES. Vanguard funds can postpone payment of redemption proceeds for up to seven calendar days. In addition, Vanguard funds can suspend redemptions and/or postpone payments of redemption proceeds beyond seven calendar days at times when the NYSE is closed or during emergency circumstances, as determined by the SEC.

EXCHANGING SHARES

An exchange occurs when you use the proceeds from the redemption of shares of one Vanguard fund to simultaneously purchase shares of a different Vanguard fund. You can make exchange requests online (if you are a registered user of Vanguard.com), by telephone, or by mail. See Purchasing Shares and Redeeming Shares.

If the NYSE is open for regular trading (a business day) at the time an exchange request is received in good order, the trade date will generally be the same day.
See Other Rules You Should Know--Good Order for additional information on all transaction requests.

Please note that Vanguard reserves the right, without prior notice, to revise or terminate the exchange privilege, limit the amount of any exchange, or reject an exchange, at any time, for any reason.

FREQUENT-TRADING LIMITS

Because excessive transactions can disrupt management of a fund and increase the fund's costs for all shareholders, Vanguard places certain limits on frequent trading in

29

the Vanguard funds. Each Vanguard fund (other than money market funds, short-term bond funds, and ETF Shares) limits an investor's purchases or exchanges into a fund account for 60 calendar days after the investor has redeemed or exchanged out of that fund account.

For Vanguard Retirement Investment Program pooled plans, the policy applies to exchanges made by participants online or by phone.

The policy does not apply to the following:

. Purchases of shares with reinvested dividend or capital gains distributions.

. Transactions through Vanguard's Automatic Investment Plan, Automatic Exchange Service, Direct Deposit Service, Automatic Withdrawal Plan, Required Minimum Distribution Service, and Vanguard Small Business Online/(R)/.

. Redemptions of shares to pay fund or account fees.

. Transaction requests submitted by mail to Vanguard from shareholders who hold their accounts directly with Vanguard. (Wire transactions and transaction requests submitted by fax are not mail transactions and are subject to the policy.)

. Transfers and re-registrations of shares within the same fund.

. Purchases of shares by asset transfer or direct rollover.

. Conversions of shares from one share class to another in the same fund.

. Checkwriting redemptions.

. Section 529 college savings plans.

. Certain approved institutional portfolios and asset allocation programs, as well as trades made by Vanguard funds that invest in other Vanguard funds. (Please note that shareholders of Vanguard's funds of funds are subject to the policy.)

For participants in employer-sponsored defined contribution plans that are not served by Vanguard Small Business Services, the frequent-trading policy does not apply to:

. Purchases of shares with participant payroll or employer contributions or loan repayments.

. Purchases of shares with reinvested dividend or capital gains distributions.

. Distributions, loans, and in-service withdrawals from a plan.

. Redemptions of shares as part of a plan termination or at the direction of the plan.

. Automated transactions executed during the first six months of a participant's enrollment in the Vanguard Managed Account Program.

. Redemptions of shares to pay fund or account fees.

. Share or asset transfers or rollovers.

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. Re-registrations of shares.

. Conversions of shares from one share class to another in the same fund.

. Exchange requests submitted by mail to Vanguard. (Exchange requests submitted by fax or wire are not mail requests and remain subject to the policy.)

ACCOUNTS HELD BY INSTITUTIONS (OTHER THAN DEFINED CONTRIBUTION PLANS) Vanguard will systematically monitor for frequent trading in institutional clients' accounts. If we detect suspicious trading activity, we will investigate and take appropriate action, which may include applying to a client's accounts the 60-day policy previously described, prohibiting a client's purchases of fund shares, and/or eliminating the client's exchange privilege.

ACCOUNTS HELD BY INTERMEDIARIES

When intermediaries establish accounts in Vanguard funds for their clients, we cannot always monitor the trading activity of the individual clients. However, we review trading activity at the omnibus level, and if we detect suspicious activity, we will investigate and take appropriate action. If necessary, Vanguard may prohibit additional purchases of fund shares by an intermediary or by certain of the intermediary's clients. Intermediaries may also monitor their clients' trading activities in the Vanguard funds.

For those Vanguard funds that charge purchase or redemption fees, intermediaries will be asked to assess purchase and redemption fees on shareholder and participant accounts and remit these fees to the funds. The application of purchase and redemption fees and frequent-trading policies may vary among intermediaries. There are no assurances that Vanguard will successfully identify all intermediaries or that intermediaries will properly assess purchase and redemption fees or administer frequent-trading policies. If you invest with Vanguard through an intermediary, please read that firm's materials carefully to learn of any other rules or fees that may apply.

OTHER RULES YOU SHOULD KNOW

PROSPECTUS AND SHAREHOLDER REPORT MAILINGS
Vanguard attempts to eliminate the unnecessary expense of duplicate mailings by sending just one prospectus and/or report when two or more shareholders have the same last name and address. You may request individual prospectuses and reports by contacting our Client Services Department in writing, by telephone, or by e-mail.

VANGUARD.COM
REGISTRATION. If you are a registered user of Vanguard.com, you can use your personal computer to review your account holdings; to buy, sell, or exchange shares of most

31

Vanguard funds; and to perform most other transactions. You must register for this service online.

ELECTRONIC DELIVERY. Vanguard can deliver your account statements, transaction confirmations, and fund financial reports electronically. If you are a registered user of Vanguard.com, you can consent to the electronic delivery of these documents by logging on and changing your mailing preference under "My Profile." You can revoke your electronic consent at any time, and we will begin to send paper copies of these documents within 30 days of receiving your notice.

TELEPHONE TRANSACTIONS
AUTOMATIC. When we set up your account, we'll automatically enable you to do business with us by telephone, unless you instruct us otherwise in writing.

TELE-ACCOUNT/(R)/. To conduct account transactions through Vanguard's automated telephone service, you must first obtain a Personal Identification Number (PIN). Call Tele-Account at 800-662-6273 to obtain a PIN, and allow seven days after requesting the PIN before using this service.

PROOF OF A CALLER'S AUTHORITY. We reserve the right to refuse a telephone request if the caller is unable to provide the requested information or if we reasonably believe that the caller is not an individual authorized to act on the account. Before we allow a caller to act on an account, we may request the following information:

. Authorization to act on the account (as the account owner or by legal documentation or other means).

. Account registration and address.

. Fund name and account number, if applicable.

. Other information relating to the caller, the account holder, or the account.

SUBJECT TO REVISION. For any or all shareholders, we reserve the right, at any time and without prior notice, to revise, suspend, or terminate the privilege to transact or communicate with Vanguard by telephone.

GOOD ORDER

We reserve the right to reject any transaction instructions that are not in "good order." Good order generally means that your instructions include:

. The fund name and account number.

. The amount of the transaction (stated in dollars, shares, or percentage).

Written instructions also must include:

. Signatures of all registered owners.

32

. Signature guarantees, if required for the type of transaction. (Call Vanguard for specific signature-guarantee requirements.)

. Any supporting documentation that may be required.

The requirements vary among types of accounts and transactions.

Vanguard reserves the right, without prior notice, to revise the requirements for good order.

FUTURE TRADE-DATE REQUESTS

Vanguard does not accept requests to hold a purchase, redemption, or exchange transaction for a future date. All such requests will receive trade dates as previously described in Purchasing Shares and Redeeming Shares. Vanguard reserves the right to return future-dated purchase checks.

ACCOUNTS WITH MORE THAN ONE OWNER
If an account has more than one owner or authorized person, Vanguard will accept telephone or online instructions from any one owner or authorized person.

RESPONSIBILITY FOR FRAUD

Vanguard will not be responsible for any account losses because of fraud if we reasonably believe that the person transacting business on an account is authorized to do so. Please take precautions to protect yourself from fraud. Keep your account information private, and immediately review any account statements that we provide to you. It is important that you contact Vanguard immediately about any transactions you believe to be unauthorized.

UNCASHED CHECKS
Please cash your distribution or redemption checks promptly. Vanguard will not pay interest on uncashed checks.

UNUSUAL CIRCUMSTANCES
If you experience difficulty contacting Vanguard online, by telephone, or by Tele-Account, you can send us your transaction request by regular or express mail. See Contacting Vanguard for addresses.

INVESTING WITH VANGUARD THROUGH OTHER FIRMS

You may purchase or sell shares of most Vanguard funds through a financial intermediary, such as a bank, broker, or investment advisor. Please consult your financial intermediary to determine which, if any, shares are available through that firm and to learn about other rules that may apply.

33

Please see Frequent-Trading Limits--Accounts Held by Intermediaries for information about the assessment of redemption fees and monitoring of frequent trading for accounts held by intermediaries.

ACCOUNT SERVICE FEE
For most shareholders, Vanguard deducts a $20 account service fee from all fund accounts that have a balance below $10,000 for any reason, including market fluctuation. The account service fee applies to both retirement and nonretirement fund accounts. The fee will be assessed on fund accounts in all Vanguard funds, regardless of a fund's minimum investment amount. The account service fee, which will be collected by redeeming fund shares in the amount of $20, will be deducted from a fund account only once per calendar year.

If you register on Vanguard.com and elect to receive electronic delivery of statements, reports, and other materials for all of your fund accounts, the account service fee for balances below $10,000 will not be charged, so long as that election remains in effect.

The account service fee also does not apply to the following:

. Money market sweep accounts held through Vanguard Brokerage Services/(R)/.

. Accounts held through intermediaries.

. Accounts held by Voyager, Voyager Select, and Flagship clients. Membership is based on total household assets held at Vanguard, with a minimum of $100,000 to qualify for Vanguard Voyager Services/TM/, $500,000 for Vanguard Voyager Select Services/TM/, and $1 million for Vanguard Flagship Services/TM/. Vanguard determines membership by aggregating assets of all eligible accounts held by the investor and immediate family members who reside at the same address. Aggregate assets include investments in Vanguard mutual funds, Vanguard ETFs/TM/, annuities through Vanguard, the Vanguard 529 Plan, certain small-business accounts, and employer-sponsored retirement plans for which Vanguard provides recordkeeping services.

. Participant accounts in employer-sponsored defined contribution plans (other than those served by the Vanguard Small Business Services Department, which are subject to various fee structures). Please consult your enrollment materials for the rules that apply to your account.

. Section 529 college savings plans.

LOW-BALANCE ACCOUNTS

The Fund reserves the right, without prior notice, to liquidate any investment-only retirement-plan fund account or any nonretirement fund account whose balance falls below the minimum initial investment for any reason, including market fluctuation.

34

Shares redeemed in accordance with this policy will be subject to applicable redemption fees.

RIGHT TO CHANGE POLICIES

In addition to the rights expressly stated elsewhere in this prospectus, Vanguard reserves the right to (1) alter, add, or discontinue any conditions of purchase (including eligibility requirements), redemption, exchange, service, or privilege at any time without prior notice; (2) accept initial purchases by telephone; (3) freeze any account and/or suspend account services when Vanguard has received reasonable notice of a dispute regarding the assets in an account, including notice of a dispute between the registered or beneficial account owners or when we reasonably believe a fraudulent transaction may occur or has occurred; (4) temporarily freeze any account and/or suspend account services upon initial notification to Vanguard of the death of the shareholder until Vanguard receives required documentation in good order; (5) alter, impose, discontinue, or waive any redemption fee, account service fee, or other fees charged to a group of shareholders; and (6) redeem an account, without the owner's permission to do so, in cases of threatening conduct or suspicious, fraudulent, or illegal activity. Changes may affect any or all investors. These actions will be taken when, at the sole discretion of Vanguard management, we reasonably believe they are deemed to be in the best interest of a fund.

FUND AND ACCOUNT UPDATES

CONFIRMATION STATEMENTS

We will send (or provide online, whichever you prefer) a confirmation of your trade date and the amount of your transaction when you buy, sell, or exchange shares. However, we will not send confirmations reflecting only checkwriting redemptions or the reinvestment of dividends or capital gains distributions. For any month in which you had a checkwriting redemption, a Checkwriting Activity Statement will be sent to you itemizing the checkwriting redemptions for that month. Promptly review each confirmation statement that we provide to you by mail or online. It is important that you contact Vanguard immediately with any questions you may have about any transaction reflected on a confirmation statement, or Vanguard will consider the transaction properly processed.

PORTFOLIO SUMMARIES

We will send (or provide online, whichever you prefer) quarterly portfolio summaries to help you keep track of your accounts throughout the year. Each summary shows the market value of your account at the close of the statement period, as well as all distributions, purchases, redemptions, exchanges, and transfers for the current calendar year. Promptly review each summary that we provide to you by mail or

35

online. It is important that you contact Vanguard immediately with any questions you may have about any transaction reflected on the summary, or Vanguard will consider the transaction properly processed.

TAX STATEMENTS
For most taxable accounts, we will send annual tax statements to assist you in preparing your income tax returns. These statements, which are generally mailed in January, will report the previous year's dividend and capital gains distributions, proceeds from the sale of shares, and distributions from IRAs and other retirement plans. These statements can be viewed online.

AVERAGE-COST REVIEW STATEMENTS

For most taxable accounts, average-cost review statements will accompany annual 1099B tax forms. These tax forms show the average cost of shares that you redeemed during the previous calendar year, using the average-cost single-category method, which is one of the methods established by the IRS.

ANNUAL AND SEMIANNUAL REPORTS

We will send (or provide online, whichever you prefer) financial reports about Vanguard International Explorer Fund twice a year, in June and December. These comprehensive reports include overviews of the financial markets and provide the following specific Fund information:

. Performance assessments and comparisons with industry benchmarks.

. Reports from the advisor.

. Financial statements with listings of Fund holdings.

PORTFOLIO HOLDINGS
We generally post on our website at www.vanguard.com, in the HOLDINGS section of the Fund's Profile page, a detailed list of the securities held by the Fund (under PORTFOLIO HOLDINGS), as of the most recent calendar-quarter-end. This list is generally updated within 30 days after the end of each calendar quarter. Vanguard may exclude any portion of these portfolio holdings from publication when deemed in the best interest of the Fund. We also generally post the ten largest stock portfolio holdings of the Fund and the percentage of the Fund's total assets that each of these holdings represents, as of the most recent calendar-quarter-end. This list is generally updated within 15 calendar days after the end of each calendar quarter. Please consult the Fund's Statement of Additional Information or our website for a description of the policies and procedures that govern disclosure of the Fund's portfolio holdings.

36

CONTACTING VANGUARD

WEB
---------------------------------------------------------------------------------------------------------------
Vanguard.com For the most complete source of Vanguard news
24 hours a day, 7 days a week For fund, account, and service information
 For most account transactions
 For literature requests
---------------------------------------------------------------------------------------------------------------

PHONE
---------------------------------------------------------------------------------------------------------------
Vanguard Tele-Account/(R)/ 800-662-6273 For automated fund and account information
(ON-BOARD) For exchange transactions (subject to limitations)
 Toll-free, 24 hours a day, 7 days a week
---------------------------------------------------------------------------------------------------------------
Investor Information 800-662-7447 (SHIP) For fund and service information
(Text telephone for people with hearing For literature requests
impairment at 800-952-3335) Business hours only: Monday-Friday, 8 a.m. to 10 p.m.,
 Eastern time; Saturday, 9 a.m. to 4 p.m., Eastern time
---------------------------------------------------------------------------------------------------------------
Client Services 800-662-2739 (CREW) For account information
(Text telephone for people with hearing For most account transactions
impairment at 800-749-7273) Business hours only: Monday-Friday, 8 a.m. to 10 p.m.,
 Eastern time; Saturday, 9 a.m. to 4 p.m., Eastern time
---------------------------------------------------------------------------------------------------------------
Institutional Division For information and services for large institutional investors
888-809-8102 Business hours only: Monday-Friday, 8:30 a.m. to 9 p.m.,
 Eastern time
---------------------------------------------------------------------------------------------------------------
Intermediary Sales Support For information and services for financial intermediaries
800-997-2798 including broker-dealers, trust institutions, insurance
 companies, and financial advisors
 Business hours only: Monday-Friday, 8:30 a.m. to 7 p.m.,
 Eastern time
---------------------------------------------------------------------------------------------------------------

37

VANGUARD ADDRESSES

Please be sure to use the correct address, depending on your method of delivery. Use of an incorrect address could delay the processing of your transaction.

REGULAR MAIL (INDIVIDUALS) The Vanguard Group
 P.O. Box 1110
 Valley Forge, PA 19482-1110
----------------------------------------------------------------------
REGULAR MAIL (INSTITUTIONS) The Vanguard Group
 P.O. Box 2900
 Valley Forge, PA 19482-2900
----------------------------------------------------------------------
REGISTERED, EXPRESS, OR OVERNIGHT The Vanguard Group
 455 Devon Park Drive
 Wayne, PA 19087-1815
----------------------------------------------------------------------

FUND NUMBER
Please use the specific fund number when contacting us:


Vanguard International Explorer Fund 126

Vanguard, Vanguard.com, Connect with Vanguard, Plain Talk, Vanguard Tele-Account, Tele-Account, Vanguard ETF, Vanguard ETFs, Explorer, Vanguard Small Business Online, Vanguard Brokerage Services, Vanguard Voyager Services, Voyager, Vanguard Voyager Select Services, Voyager Select, Vanguard Flagship Services, Flagship, and the ship logo are trademarks of The Vanguard Group, Inc. All other marks are the exclusive property of their respective owners.

38

GLOSSARY OF INVESTMENT TERMS

CAPITAL GAINS DISTRIBUTION. Payment to mutual fund shareholders of gains realized on securities that a fund has sold at a profit, minus any realized losses.

CASH INVESTMENTS. Cash deposits, short-term bank deposits, and money market instruments that include U.S. Treasury bills and notes, bank certificates of deposit (CDs), repurchase agreements, commercial paper, and banker's acceptances.

COMMON STOCK. A security representing ownership rights in a corporation. A stockholder is entitled to share in the company's profits, some of which may be paid out as dividends.

COUNTRY/REGIONAL RISK. The chance that world events--such as political upheaval, financial troubles, or natural disasters--will adversely affect the value of securities issued by companies in foreign countries or regions. Because a fund may invest a large portion of its assets in securities of companies located in any one country or region, its performance may be hurt disproportionately by the poor performance of its investments in that area. Country/regional risk is especially high in emerging markets.

CURRENCY RISK. The chance that the value of a foreign investment, measured in U.S. dollars, will decrease because of unfavorable changes in currency exchange rates.

DIVIDEND DISTRIBUTION. Payment to mutual fund shareholders of income from interest or dividends generated by a fund's investments.

EXPENSE RATIO. The percentage of a fund's average net assets used to pay its expenses during a fiscal year. The expense ratio includes management expenses--such as advisory fees, account maintenance, reporting, accounting, legal, and other administrative expenses--and any 12b-1 distribution fees. It does not include the transaction costs of buying and selling portfolio securities.

GROWTH FUND. A mutual fund that emphasizes stocks of companies believed to have above-average potential for growth in revenue, earnings, cash flow, or other similar criteria. These stocks typically have low dividend yields and above-average prices in relation to such measures as earnings and book value.

INCEPTION DATE. The date on which the assets of a fund (or one of its share classes) are first invested in accordance with the fund's investment objective. For funds with a subscription period, the inception date is the day after that period ends. Investment performance is measured from the inception date.

INTERNATIONAL STOCK FUND. A mutual fund that invests in the stocks of companies located outside the United States.

INVESTMENT ADVISOR. An organization that is responsible for making the day-to-day decisions regarding a fund's investments.

39

MUTUAL FUND. An investment company that pools the money of many people and invests it in a variety of securities in an effort to achieve a specific objective over time.

NET ASSET VALUE (NAV). The market value of a mutual fund's total assets, minus liabilities, divided by the number of shares outstanding. The value of a single share is also called its share value or share price.

PRINCIPAL. The face value of a debt instrument or the amount of money put into an investment.

SECURITIES. Stocks, bonds, money market instruments, and other investment vehicles.

TOTAL RETURN. A percentage change, over a specified time period, in a mutual fund's net asset value, assuming the reinvestment of all distributions of dividends and
capital gains.

VALUE FUND. A mutual fund that emphasizes stocks whose prices typically are below average in relation to such measures as earnings and book value. These stocks often have above-average dividend yields.

VOLATILITY. The fluctuations in value of a mutual fund or other security. The greater a fund's volatility, the wider the fluctuations in its returns.

YIELD. Income (interest or dividends) earned by an investment, expressed as a percentage of the investment's price.

40

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[SHIP LOGO][VANGUARD/(R)/ LOGO]

P.O. Box 2600
Valley Forge, PA 19482-2600

CONNECT WITH VANGUARD/(R)/ > www.vanguard.com

FOR MORE INFORMATION
If you would like more information about Vanguard International Explorer Fund, the following documents are available free upon request:

ANNUAL/SEMIANNUAL REPORTS TO SHAREHOLDERS
Additional information about the Fund's investments is available in the Fund's annual and semiannual reports to shareholders. In the annual report, you will find a discussion of the market conditions and investment strategies that significantly affected the Fund's performance during its last fiscal year.

STATEMENT OF ADDITIONAL INFORMATION (SAI)
The SAI provides more detailed information about the Fund.

The current annual and semiannual reports and the SAI are incorporated by reference into (and are thus legally a part of) this prospectus.

To receive a free copy of the latest annual or semiannual report or the SAI, or to request additional information about the Fund or other Vanguard funds, please visit www.vanguard.com or contact us as follows:

The Vanguard Group
Investor Information Department
P.O. Box 2600
Valley Forge, PA 19482-2600
Telephone: 800-662-7447 (SHIP)
Text telephone for people with hearing impairment: 800-952-3335

If you are a current Vanguard shareholder and would like information about your account, account transactions, and/or account statements, please call:

Client Services Department
Telephone: 800-662-2739 (CREW)
Text telephone for people with hearing impairment: 800-749-7273

INFORMATION PROVIDED BY THE SECURITIES AND EXCHANGE COMMISSION (SEC) You can review and copy information about the Fund (including the SAI) at the SEC's Public Reference Room in Washington, DC. To find out more about this public service, call the SEC at 202-551-8090. Reports and other information about the Fund are also available in the EDGAR database on the SEC's Internet site at www.sec.gov, or you can receive copies of this information, for a fee, by electronic request at the following e-mail address: publicinfo@sec.gov, or by writing the Public Reference Section, Securities and Exchange Commission, Washington, DC 20549-0102.

Fund's Investment Company Act file number: 811-07443

(C) 2008 The Vanguard Group, Inc. All rights reserved. Vanguard Marketing Corporation, Distributor.

P126 022008


VANGUARD/(R)/ INTERNATIONAL EXPLORER/TM/ FUND

> PROSPECTUS

FOR PARTICIPANTS

February 22, 2008


[SHIP LOGO][VANGUARD/(R)/ Logo]


This prospectus contains financial data for the Fund through the fiscal year ended October 31, 2007.

NEITHER THE SECURITIES AND EXCHANGE COMMISSION NOR ANY STATE SECURITIES COMMISSION HAS APPROVED OR DISAPPROVED OF THESE SECURITIES OR PASSED UPON THE ACCURACY OR ADEQUACY OF THIS PROSPECTUS. ANY REPRESENTATION TO THE CONTRARY IS A CRIMINAL OFFENSE.


CONTENTS

-------------------------------------------------------------------------------
Fund Profile 1 Financial Highlights 16

-------------------------------------------------------------------------------
More on the Fund 5 Investing With Vanguard 18

-------------------------------------------------------------------------------
 The Fund and Vanguard 12 Accessing Fund Information by Computer 21

-------------------------------------------------------------------------------
 Investment Advisor 13 Glossary of Investment Terms 22

-------------------------------------------------------------------------------
 Dividends, Capital 14
 Gains, and Taxes
-------------------------------------------------------------------------------
 Share Price 15


WHY READING THIS PROSPECTUS IS IMPORTANT
This prospectus explains the investment objective, policies, strategies, and risks associated with the Fund. To highlight terms and concepts important to mutual fund investors, we have provided Plain Talk/(R)/ explanations along the way. Reading the prospectus will help you decide whether the Fund is the right investment for you. We suggest that you keep this prospectus for future reference.

This prospectus is intended for participants in employer-sponsored retirement or savings plans. Another version--for investors who would like to open a personal investment account--can be obtained by calling Vanguard at 800-662-7447.


FUND PROFILE

INVESTMENT OBJECTIVE
The Fund seeks to provide long-term capital appreciation.

PRIMARY INVESTMENT STRATEGIES
The Fund invests primarily in the equity securities of small-capitalization companies located outside the United States that the advisor believes offer the potential for capital appreciation. In doing so, the advisor considers, among other things, whether a company is likely to have above-average earnings growth, whether the company's securities are attractively valued, and whether the company has any proprietary advantages.

PRIMARY RISKS
An investment in the Fund could lose money over short or even long periods. You should expect the Fund's share price and total return to fluctuate within a wide range, like the fluctuations of the overall stock market. The Fund's performance could be hurt by:

. Stock market risk, which is the chance that stock prices overall will decline. Stock markets tend to move in cycles, with periods of rising prices and periods of falling prices. In addition, investments in foreign stock markets can be riskier than U.S. stock investments. The prices of foreign stocks and the prices of U.S. stocks have, at times, moved in opposite directions.

. Country/regional risk, which is the chance that world events--such as political upheaval, financial troubles, or natural disasters will adversely affect the value of securities issued by companies in certain foreign countries or regions. Because the Fund may invest a large portion of its assets in securities of companies located in any one country or region, its performance may be hurt disproportionately by the poor performance of its investments in that area. Country/regional risk is especially high in emerging markets.

. Currency risk, which is the chance that the value of a foreign investment, measured in U.S. dollars, will decrease because of unfavorable changes in currency exchange rates.

. Investment style risk, which is the chance that returns from non-U.S. small-capitalization growth stocks will trail returns from the overall stock market. Historically, non-U.S. small-cap stocks have been more volatile in price than the large-cap stocks that dominate the overall market, and they often perform quite differently.

. Manager risk, which is the chance that poor security selection will cause the Fund to underperform relevant benchmarks or other funds with a similar investment objective.

1

PERFORMANCE/RISK INFORMATION
The following bar chart and table are intended to help you understand the risks of investing in the Fund.* The bar chart shows how the performance of the Fund has varied from one calendar year to another over the periods shown. The table shows how the average annual total returns compare with those of a a relevant market index. Keep in mind that the Fund's past performance does not indicate how the Fund will perform in the future.

* Prior to June 29, 2002, Vanguard International Explorer Fund was organized as Schroder International Smaller Companies Fund (Schroder Fund) and was sponsored by Schroder Investment Management North America Inc., its investment advisor. A reorganization brought the Fund into The Vanguard Group; the Fund maintains the same investment advisor and substantially similar investment objective, strategies, and policies.

ANNUAL TOTAL RETURNS

BAR CHART
[-50% to 125%]

 1998 25.98%
 1999 90.29%
 2000 -2.68%
 2001 -22.52%
 2002 -13.88%
 2003 57.37%
 2004 31.77%
 2005 20.49%
 2006 30.34%
 2007 5.15%
------------------------------------------------------------

During the periods shown in the bar chart, the highest return for a calendar quarter was 27.66% (quarter ended June 30, 2003), and the lowest return for a quarter was -20.31% (quarter ended September 30, 2001).

AVERAGE ANNUAL TOTAL RETURNS FOR PERIODS ENDED DECEMBER 31, 2007
 1 Year 5 Years 10 Years
-------------------------------------------------------------------------------------------------------
VANGUARD INTERNATIONAL EXPLORER FUND 5.15% 27.92% 18.22%
-------------------------------------------------------------------------------------------------------
S&P/CITIGROUP EXTENDED MARKET EUROPE
AND PACIFIC (EM EPAC) INDEX/1/
(reflects no deduction for fees or expenses) 5.85% 27.10% 12.32%
-------------------------------------------------------------------------------------------------------
1 The S&P/Citigroup EM EPAC Index measures the performance of the smallest companies
 from the 24 European and Pacific countries represented in the S&P/Citigroup EPAC Broad
 Market Index. The EM EPAC Index represents companies whose assets place them in the
 bottom 20% of the total market capital of each country. (Prior to April 7, 2003, the
 Index was known as the Salomon Smith Barney EM EPAC Index, and from April 7
 through November 11, 2003, the Index was known as the Citigroup EM EPAC Index.) Index
 returns are adjusted for withholding taxes applicable to U.S.-based mutual funds organized
 as Delaware statutory trusts. Since April 1, 2007, the Index returns are adjusted for
 withholding taxes applicable to Luxembourg holding companies.

2

FEES AND EXPENSES

The following table describes the fees and expenses you may pay if you buy and hold shares of the Fund. As is the case with all mutual funds, transaction costs incurred by the Fund for buying and selling securities are not reflected in the table. However, these costs are reflected in the investment performance figures included in this prospectus. The expenses shown under Annual Fund Operating Expenses are based on those incurred in the fiscal year ended October 31, 2007.

SHAREHOLDER FEES
(Fees paid directly from your investment)

--------------------------------------------------------------------------------
Sales Charge (Load) Imposed on Purchases None
--------------------------------------------------------------------------------
Purchase Fee None
--------------------------------------------------------------------------------
Sales Charge (Load) Imposed on Reinvested Dividends None
--------------------------------------------------------------------------------
Redemption Fee 2%/1/
--------------------------------------------------------------------------------

ANNUAL FUND OPERATING EXPENSES
(Expenses deducted from the Fund's assets)

--------------------------------------------------------------------------------
Management Expenses 0.29%
--------------------------------------------------------------------------------
12b-1 Distribution Fee None
--------------------------------------------------------------------------------
Other Expenses 0.06%
--------------------------------------------------------------------------------
Total Annual Fund Operating Expenses 0.35%
--------------------------------------------------------------------------------

1 The 2% fee applies to shares redeemed within two months of purchase by selling or by exchanging to another fund. The fee is withheld from redemption proceeds and retained by the Fund. Shares held for two months or more are not subject to the 2% fee.

The following example is intended to help you compare the cost of investing in the Fund with the cost of investing in other mutual funds. It illustrates the hypothetical expenses that you would incur over various periods if you invest $10,000 in the Fund's shares. This example assumes that the Fund provides a return of 5% a year and that operating expenses remain the same. The results apply whether or not you redeem your investment at the end of the given period.

1 Year 3 Years 5 Years 10 Years
-------------------------------------------------------------------------------
$36 $113 $197 $443
-------------------------------------------------------------------------------

THIS EXAMPLE SHOULD NOT BE CONSIDERED TO REPRESENT ACTUAL EXPENSES OR PERFORMANCE FROM THE PAST OR FOR THE FUTURE. ACTUAL FUTURE EXPENSES MAY BE HIGHER OR LOWER THAN THOSE SHOWN.

3


PLAIN TALK ABOUT FUND EXPENSES

All mutual funds have operating expenses. These expenses, which are deducted from a fund's gross income, are expressed as a percentage of the net assets of the fund. Vanguard International Explorer Fund's expense ratio in fiscal year 2007 was 0.35%, or $3.50 per $1,000 of average net assets. The average international small-cap fund had expenses in 2006 of 1.71%, or $17.10 per $1,000 of average net assets (derived from data provided by Lipper Inc., which reports on the mutual fund industry). Management expenses, which are one part of operating expenses, include investment advisory fees as well as other costs of managing a fund--such as account maintenance, reporting, accounting, legal, and other administrative expenses.


PLAIN TALK ABOUT COSTS OF INVESTING

Costs are an important consideration in choosing a mutual fund. That's because you, as a shareholder, pay the costs of operating a fund, plus any transaction costs incurred when the fund buys or sells securities. These costs can erode a substantial portion of the gross income or the capital appreciation a fund achieves. Even seemingly small differences in expenses can, over time, have a dramatic effect on a fund's performance.

ADDITIONAL INFORMATION

As of October 31, 2007
--------------------------------------------------------------------------------
Net Assets $3.3 billion
--------------------------------------------------------------------------------
Investment Advisor Schroder Investment Management North America Inc.,
 New York, N.Y., since inception
--------------------------------------------------------------------------------
Dividends and Capital Gains Distributed annually in December
--------------------------------------------------------------------------------
Inception Date November 4, 1996
--------------------------------------------------------------------------------
Newspaper Abbreviation IntlExplr
--------------------------------------------------------------------------------
Vanguard Fund Number 126
--------------------------------------------------------------------------------
CUSIP Number 921946208
--------------------------------------------------------------------------------
Ticker Symbol VINEX
--------------------------------------------------------------------------------

4

MORE ON THE FUND

This prospectus describes the primary risks you would face as a Fund shareholder. It is important to keep in mind one of the main axioms of investing: The higher the risk of losing money, the higher the potential reward. The reverse, also, is generally true: The lower the risk, the lower the potential reward. As you consider an investment in any mutual fund, you should take into account your personal tolerance for fluctuations in the securities markets. Look for this FLAG LOGO symbol throughout the prospectus. It is used to mark detailed information about the more significant risks that you would confront as a Fund shareholder.

The following sections explain the primary investment strategies and policies that the Fund uses in pursuit of its objective. The Fund's board of trustees, which oversees the Fund's management, may change investment strategies or policies in the interest of shareholders without a shareholder vote, unless those strategies or policies are designated as fundamental. Note that the Fund's investment objective is not fundamental and may be changed without a shareholder vote.

MARKET EXPOSURE
The Fund invests primarily in the equity securities of smaller companies located outside the United States.

FLAG LOGO
THE FUND IS SUBJECT TO STOCK MARKET RISK, WHICH IS THE CHANCE THAT STOCK PRICES OVERALL WILL DECLINE. STOCK MARKETS TEND TO MOVE IN CYCLES, WITH PERIODS OF RISING PRICES AND PERIODS OF FALLING PRICES. IN ADDITION, INVESTMENTS IN FOREIGN STOCK MARKETS CAN BE RISKIER THAN U.S. STOCK INVESTMENTS. THE PRICES OF FOREIGN STOCKS AND THE PRICES OF U.S. STOCKS HAVE, AT TIMES, MOVED IN OPPOSITE DIRECTIONS.

To illustrate the volatility of international stock prices, the following table shows the best, worst, and average annual total returns for foreign stock markets over various periods as measured by the Morgan Stanley Capital International Europe, Australasia, Far East (MSCI EAFE) Index, a widely used barometer of international market activity. (Total returns consist of dividend income plus change in market price.) Note that the returns shown do not include the costs of buying and selling stocks or other expenses that a real-world investment portfolio would incur.

5

INTERNATIONAL STOCK MARKET RETURNS
(1970-2007)

 1 Year 5 Years 10 Years 20 Years
-------------------------------------------------------------------------
Best 69.4% 36.1% 22.0% 15.5%
-------------------------------------------------------------------------
Worst -23.4 -2.9 4.0 7.4
-------------------------------------------------------------------------
Average 12.9 11.1 11.6 12.3
-------------------------------------------------------------------------

The table covers all of the 1-, 5-, 10-, and 20-year periods from 1970 through 2007. These average returns reflect past performance of international stocks; you should not regard them as an indication of future performance of either foreign markets as a whole or the Fund in particular.

Note that the MSCI EAFE Index does not take into account returns for emerging markets, which can be substantially more volatile, and substantially less liquid, than the more developed markets included in the Index. In addition, because the MSCI EAFE Index tracks the European and Pacific developed markets collectively, the returns in the preceding table do not reflect the variability of returns for these markets individually. To illustrate this variability, the following table shows returns for different international markets--as well as for the U.S. market for comparison--from 1998 through 2007, as measured by their respective indexes.

RETURNS FOR VARIOUS STOCK MARKETS/1/
 European Pacific Emerging U.S.
 Market/2/ Market/2/ Markets/2/ Market
-----------------------------------------------------------------------------------------------------------------------------
1998 28.53% 2.72% -25.34% 28.58%
-----------------------------------------------------------------------------------------------------------------------------
1999 15.89 56.65 66.41 21.04
-----------------------------------------------------------------------------------------------------------------------------
2000 -8.39 -25.78 -30.61 -9.10
-----------------------------------------------------------------------------------------------------------------------------
2001 -19.90 -25.40 -2.62 -11.89
-----------------------------------------------------------------------------------------------------------------------------
2002 -18.38 -9.29 -6.17 -22.10
-----------------------------------------------------------------------------------------------------------------------------
2003 38.54 38.48 55.82 28.68
-----------------------------------------------------------------------------------------------------------------------------
2004 20.88 18.98 25.55 10.88
-----------------------------------------------------------------------------------------------------------------------------
2005 9.42 22.64 34.00 4.91
-----------------------------------------------------------------------------------------------------------------------------
2006 33.72 12.20 32.17 15.79
-----------------------------------------------------------------------------------------------------------------------------
2007 13.86 5.30 39.39 5.49
-----------------------------------------------------------------------------------------------------------------------------
1 European market returns are measured by the MSCI Europe Index; Pacific market returns are measured by the MSCI Pacific
 Index; emerging markets returns are measured by the MSCI Emerging Markets Index; and U.S. market returns are measured by
 the Standard & Poor's 500 Index.
2 Index returns are adjusted for withholding taxes applicable to Luxembourg holding companies.

6

Keep in mind that these returns reflect past performance of the various indexes; you should not consider them as an indication of future performance of the indexes, or of the Fund in particular.


PLAIN TALK ABOUT INTERNATIONAL INVESTING

U.S. investors who invest abroad will encounter risks not typically associated with U.S. companies, because foreign stock and bond markets operate differently from the U.S. markets. For instance, foreign companies are not subject to the same accounting, auditing, and financial-reporting standards and practices as U.S. companies, and their stocks may not be as liquid as those of similar U.S. firms. In addition, foreign stock exchanges, brokers, and companies generally have less government supervision and regulation than their counterparts in the United States. These factors, among others, could negatively affect the returns U.S. investors receive from foreign investments.

FLAG LOGO
THE FUND IS SUBJECT TO COUNTRY/REGIONAL RISK AND CURRENCY RISK. COUNTRY/REGIONAL RISK IS THE CHANCE THAT DOMESTIC EVENTS--SUCH AS POLITICAL UPHEAVAL, FINANCIAL TROUBLES, OR NATURAL DISASTERS--WILL ADVERSELY AFFECT THE VALUE OF SECURITIES ISSUED BY COMPANIES IN CERTAIN FOREIGN COUNTRIES OR REGIONS. BECAUSE THE FUND MAY INVEST A LARGE PORTION OF ITS ASSETS IN SECURITIES OF COMPANIES LOCATED IN ANY ONE COUNTRY OR REGION, ITS PERFORMANCE MAY BE HURT DISPROPORTIONATELY BY THE POOR PERFORMANCE OF ITS INVESTMENTS IN THAT AREA. COUNTRY/REGIONAL RISK IS ESPECIALLY HIGH IN EMERGING MARKETS. CURRENCY RISK IS THE CHANCE THAT THE VALUE OF A FOREIGN INVESTMENT, MEASURED IN U.S. DOLLARS, WILL DECREASE BECAUSE OF UNFAVORABLE CHANGES IN CURRENCY EXCHANGE RATES.

The Fund generally emphasizes developed markets in Europe and the Pacific, with a limited allocation to emerging markets. Stocks of emerging-markets countries can be substantially more volatile, and substantially less liquid, than those of both U.S. and more developed foreign markets.

FLAG LOGO
THE FUND IS SUBJECT TO INVESTMENT STYLE RISK, WHICH IS THE CHANCE THAT RETURNS FROM NON-U.S. SMALL-CAPITALIZATION GROWTH STOCKS WILL TRAIL RETURNS FROM THE OVERALL STOCK MARKET. HISTORICALLY, NON-U.S. SMALL-CAP STOCKS HAVE BEEN MORE VOLATILE IN PRICE THAN THE LARGE-CAP STOCKS THAT DOMINATE THE OVERALL MARKET, AND THEY OFTEN PERFORM QUITE DIFFERENTLY.

Stocks of publicly traded companies and funds that invest in stocks are often classified according to market value, or market capitalization. These classifications typically include small-cap, mid-cap, and large-cap. It's important to understand that, for both companies and stock funds, market-capitalization ranges change over time.

7

Also, interpretations of size vary, and there are no "official" definitions of small-, mid-, and large-cap, even among Vanguard fund advisors. The asset-weighted median market capitalization of the Fund as of October 31, 2007, was $2.5 billion.

The Fund invests in companies that are smaller and less well-known than larger, more widely held companies. Small companies tend to be more vulnerable to adverse developments than larger companies. Small companies may have limited product lines, markets, or financial resources, or they may depend on a limited management group. Their securities may trade infrequently and in limited volumes. As a result, the prices of these securities may fluctuate more than the prices of securities of larger, more heavily traded companies. Also, there may be less publicly available information about small companies or less market interest in their securities as compared with larger companies, and it may take longer for the prices of these securities to reflect the full value of their issuers' earnings potential or assets.

SECURITY SELECTION
Schroder Investment Management North America Inc. (Schroders), advisor to the Fund, employs a fundamental investment approach that considers macroeconomic factors while focusing primarily on company-specific factors. These company-specific factors include the company's potential for long-term growth, financial condition, quality of management, and sensitivity to cyclical factors, as well as the relative value of the company's securities (compared with those of other companies and the market as a whole).

The advisor invests the Fund's assets in non-U.S. small-cap companies that it believes offer the potential for capital appreciation. In doing so, Schroders considers, among other things, whether a company is likely to have above-average earnings growth, whether its securities are attractively valued, and whether the company has any proprietary advantages. The Fund generally sells a security when its market price approaches the advisor's estimate of fair value or when the advisor identifies a significantly more attractive investment candidate.

The Fund is generally managed without regard to tax ramifications.

FLAG LOGO
THE FUND IS SUBJECT TO MANAGER RISK, WHICH IS THE CHANCE THAT POOR SECURITY SELECTION WILL CAUSE THE FUND TO UNDERPERFORM RELEVANT BENCHMARKS OR OTHER

FUNDS WITH A SIMILAR INVESTMENT OBJECTIVE.

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PLAIN TALK ABOUT GROWTH FUNDS AND VALUE FUNDS

Growth investing and value investing are two styles employed by stock-fund managers. Growth funds generally focus on stocks of companies believed to have above-average potential for growth in revenue, earnings, cash flow, or other similar criteria. These stocks typically have low dividend yields and above-average prices in relation to such measures as earnings and book value. Value funds typically emphasize stocks whose prices are below average in relation to those measures; these stocks often have above-average dividend yields. Growth and value stocks have historically produced similar long-term returns, though each category has periods when it outperforms the other.

OTHER INVESTMENT POLICIES AND RISKS
Besides investing in stocks of foreign countries, the Fund may make other kinds of investments to achieve its objective.

The Fund may invest in preferred stocks and closed-end investment companies that invest primarily in foreign securities. With preferred stocks, holders receive set dividends from the issuer; their claim on the issuer's income and assets ranks before that of common-stock holders, but after that of bondholders. The Fund may also invest in convertible securities and warrants. Convertible securities are corporate debt securities that may be converted at either a stated price or a stated rate into underlying shares of common stock. Warrants are securities that permit their owners to purchase a specific number of stock shares at a predetermined price in the future.

The Fund may invest, to a limited extent, in derivatives. Generally speaking, a derivative is a financial contract whose value is based on the value of a financial asset (such as a stock, bond, or currency), a physical asset (such as gold), or a market index (such as the S&P 500 Index). Investments in derivatives may subject the Fund to risks different from, and possibly greater than, those of the underlying securities, assets, or market indexes. The Fund will not use derivatives for speculation or for the purpose of leveraging (magnifying) investment returns.

The Fund may enter into forward foreign currency exchange contracts, which are types of derivative contracts. A forward foreign currency exchange contract is an agreement to buy or sell a country's currency at a specific price on a specific date, usually 30, 60, or 90 days in the future. In other words, the contract guarantees an exchange rate on a given date. Managers of funds that invest in foreign securities use these contracts to guard against sudden, unfavorable changes in the U.S. dollar/foreign currency exchange rates. These contracts, however, will not prevent the Fund's securities from falling in value during foreign market downswings.

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PLAIN TALK ABOUT DERIVATIVES

Derivatives can take many forms. Some forms of derivatives, such as exchange-traded futures and options on securities, commodities, or indexes, have been trading on regulated exchanges for decades. These types of derivatives are standardized contracts that can easily be bought and sold, and whose market values are determined and published daily. Nonstandardized derivatives (such as swap agreements), on the other hand, tend to be more specialized or complex, and may be harder to value.

CASH MANAGEMENT

The Fund's daily cash balance may be invested in one or more Vanguard CMT Funds, which are very low-cost money market funds. When investing in a Vanguard CMT Fund, the Fund bears its proportionate share of the at-cost expenses of the CMT Fund in which it invests.

TEMPORARY INVESTMENT MEASURES

The Fund may temporarily depart from its normal investment policies and strategies when doing so is believed to be in the Fund's best interest, so long as the alternative is consistent with the Fund's investment objective. For instance, the Fund may invest beyond the normal limits in derivatives or ETFs that are consistent with the Fund's objective when those instruments are more favorably priced or provide needed liquidity, as might be the case when the Fund is transitioning assets from one advisor to another or receives large cash flows that it cannot prudently invest immediately.

In addition, the Fund may take temporary defensive positions that are inconsistent with its normal investment policies and strategies--for instance, by allocating substantial assets to cash, commercial paper, or other less volatile instruments--in response to adverse or unusual market, economic, political, or other conditions. In doing so, the Fund may succeed in avoiding losses but may otherwise fail to achieve its investment objective.

REDEMPTION FEE
The Fund charges a redemption fee. Participants who exchange shares into a fund that charges a redemption fee will be subject to the redemption fee if they subsequently exchange those shares out of the fund within the fund's redemption-fee period.

When shares are exchanged out of the Fund, Vanguard first exchanges shares that are exempt from redemption fees (such as shares purchased with reinvested dividend or capital gains distributions and shares purchased with plan participant payroll or employer contributions). Shares a participant has held the longest will be redeemed next.

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Unlike a sales charge or a load paid to a broker or a fund management company, the redemption fee is paid directly to the Fund to offset the costs of buying and selling securities. The fee is designed to ensure that short-term investors pay their share of the Fund's transaction costs and that long-term investors do not subsidize the activities of short-term traders.

See the FUND PROFILE and INVESTING WITH VANGUARD for more information about fees.

FREQUENT TRADING OR MARKET-TIMING
BACKGROUND. Some investors try to profit from strategies involving frequent trading of mutual fund shares, such as market-timing. For funds holding foreign securities, investors may try to take advantage of an anticipated difference between the price of the fund's shares and price movements in overseas markets, a practice also known as time-zone arbitrage. Investors also may try to engage in frequent trading of funds holding investments such as small-cap stocks and high-yield bonds. As money is shifted into and out of a fund by a shareholder engaging in frequent trading, a fund incurs costs for buying and selling securities, resulting in increased brokerage and administrative costs. These costs are borne by all fund shareholders, including the long-term investors who do not generate the costs. In addition, frequent trading may interfere with an advisor's ability to efficiently manage the fund.

POLICIES TO ADDRESS FREQUENT TRADING. The Vanguard funds (other than money market funds, short-term bond funds, and Vanguard ETF/TM/ Shares) do not knowingly accommodate frequent trading. The board of trustees of each Vanguard fund has adopted policies and procedures reasonably designed to detect and discourage frequent trading and, in some cases, to compensate the fund for the costs associated with it. Although there is no assurance that Vanguard will be able to detect or prevent frequent trading or market-timing in all circumstances, the following policies have been adopted to address these issues:

. Each Vanguard fund reserves the right to reject any purchase request--including exchanges from other Vanguard funds--without notice and regardless of size. For example, a purchase request could be rejected if Vanguard determines that such purchase may negatively affect a fund's operation or performance or because of a history of frequent trading by the investor.

. Each Vanguard fund (other than money market funds, short-term bond funds, and ETF Shares) generally prohibits, except as otherwise noted in the INVESTING WITH VANGUARD section, a participant from exchanging into a fund account for 60 calendar days after the participant exchanged out of that fund account.

. Certain Vanguard funds charge shareholders purchase and/or redemption fees on transactions.

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See the INVESTING WITH VANGUARD section of this prospectus for further details on Vanguard's transaction policies.

Each fund (other than money market funds), in determining its net asset value, will, when appropriate, use fair-value pricing as described in the Share Price section. Fair-value pricing may reduce or eliminate the profitability of certain frequent-trading strategies.

DO NOT INVEST WITH VANGUARD IF YOU ARE A MARKET-TIMER.

TURNOVER RATE

Although the Fund normally seeks to invest for the long term, it may sell securities regardless of how long they have been held. The Financial Highlights section of this prospectus shows historical turnover rates for the Fund. A turnover rate of 100%, for example, would mean that the Fund had sold and replaced securities valued at 100% of its net assets within a one-year period. The average turnover rate for international stock funds was approximately 72%, as reported by Morningstar, Inc., on October 31, 2007.


PLAIN TALK ABOUT TURNOVER RATE

Before investing in a mutual fund, you should review its turnover rate. This gives an indication of how transaction costs, which are not included in the fund's expense ratio, could affect the fund's future returns. In general, the greater the volume of buying and selling by the fund, the greater the impact that brokerage commissions and other transaction costs will have on its return. Also, funds with high turnover rates may be more likely to generate capital gains that must be distributed to shareholders as taxable income.

THE FUND AND VANGUARD

The Fund is a member of The Vanguard Group, a family of 37 investment companies with more than 150 funds holding assets in excess of $1.2 trillion. All of the funds that are members of The Vanguard Group share in the expenses associated with administrative services and business operations, such as personnel, office space, equipment, and advertising.

Vanguard also provides marketing services to the funds. Although shareholders do not pay sales commissions or 12b-1 distribution fees, each fund (or in the case of a fund with multiple share classes, each share class of the fund) pays its allocated share of The Vanguard Group's marketing costs.

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PLAIN TALK ABOUT VANGUARD'S UNIQUE CORPORATE STRUCTURE

The Vanguard Group is truly a mutual mutual fund company. It is owned jointly by the funds it oversees and thus indirectly by the shareholders in those funds. Most other mutual funds are operated by management companies that may be owned by one person, by a group of individuals, or by investors who own the management company's stock. The management fees charged by these companies include a profit component over and above the companies' cost of providing services. By contrast, Vanguard provides services to its member funds on an at-cost basis, with no profit component, which helps to keep the funds' expenses low.

INVESTMENT ADVISOR

Schroder Investment Management North America Inc. (Schroders), 875 Third Avenue, 22nd Floor, New York, NY 10022-6225, has been a registered investment advisor, together with its predecessor, since 1968, and is part of a worldwide group of financial services companies known as The Schroder Group. Schroders currently serves as investment advisor to the Fund, other mutual funds, and a broad range of institutional investors. As of October 31, 2007, Schroders, together with its affiliated companies, managed approximately $280.5 billion in assets. Schroder Investment Management North America Ltd. (Schroder Limited), 31 Gresham Street, London, EC2V 7QA, England, has served as the sub-advisor for the Fund since April 1, 2003.

The Schroder International Smallcap Investment Committee is responsible for the management of the Fund. The Committee, composed of senior small-cap specialists, determines the regional allocation of the Fund. Stock selection is primarily the responsibility of senior regional small-cap portfolio managers.

Schroders' advisory fee is paid quarterly and is based on certain annual percentage rates applied to the Fund's average daily net assets for each quarter. In addition, the firm's advisory fee may be increased or decreased, based on the cumulative total return of the Fund over a trailing 36-month period as compared with that of the S&P/ Citigroup EM EPAC Index over the same period. Schroders pays 25% of its advisory fee to Schroder Limited for providing sub-advisory services.

For the fiscal year ended October 31, 2007, the advisory fee represented an effective annual rate of 0.18% of the Fund's average net assets.

Under the terms of an SEC exemption, the Fund's board of trustees may, without prior approval from shareholders, change the terms of an advisory agreement or hire a new investment advisor--either as a replacement for an existing advisor or as an additional advisor. Any significant change in the Fund's advisory arrangements will be

13

communicated to shareholders in writing. In addition, as the Fund's sponsor and overall manager, The Vanguard Group may provide investment advisory services to the Fund, on an at-cost basis, at any time. Vanguard may also recommend to the board of trustees that an advisor be hired, terminated, or replaced, or that the terms of an existing advisory agreement be revised.

For a discussion of why the board of trustees approved the Fund's investment advisory agreement, see the most recent annual report to shareholders covering the fiscal year ended on October 31.


PLAIN TALK ABOUT THE FUND'S PORTFOLIO MANAGER

The manager primarily responsible for the day-to-day management of the Fund is:

MATTHEW DOBBS, Chair of the Schroder International Smallcap Investment Committee and Portfolio Manager on the EAFE team. He has been with Schroders since 1981 and has managed the Fund since 2000. Education: B.A., Worcester College, Oxford University.

The Statement of Additional Information provides information about the portfolio manager's compensation, other accounts under management, and ownership of securities in the Fund.

DIVIDENDS, CAPITAL GAINS, AND TAXES

The Fund distributes to shareholders virtually all of its net income (interest and dividends, less expenses) as well as any net capital gains realized from the sale of its holdings. Distributions generally occur annually in December.

Your distributions will be reinvested in additional Fund shares and accumulate on a tax-deferred basis if you are investing through an employer-sponsored retirement or savings plan. You will not owe taxes on these distributions until you begin withdrawals from the plan. You should consult your plan administrator, your plan's Summary Plan Description, or your tax advisor about the tax consequences of plan withdrawals.

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PLAIN TALK ABOUT DISTRIBUTIONS

As a shareholder, you are entitled to your portion of a fund's income from interest and dividends as well as gains from the sale of investments. Income consists of both the dividends that the fund earns from any stock holdings and the interest it receives from any money market and bond investments. Capital gains are realized whenever the fund sells securities for higher prices than it paid for them. These capital gains are either short-term or long-term, depending on whether the fund held the securities for one year or less or for more than one year. You receive the fund's earnings as either a dividend or capital gains distribution.

SHARE PRICE

The Fund's share price, called its net asset value, or NAV, is calculated each business day as of the close of regular trading on the New York Stock Exchange, generally 4 p.m., Eastern time. NAV per share is computed by dividing the net assets of the Fund by the number of Fund shares outstanding for that class. On holidays or other days when the Exchange is closed, the NAV is not calculated, and the Fund does not transact purchase or redemption requests. However, on those days the value of the Fund's assets may be affected because the Fund holds foreign securities that trade on foreign markets that are open.

Stocks held by a Vanguard fund are valued at their market value when reliable market quotations are readily available. Certain short-term debt instruments used to manage a fund's cash are valued on the basis of amortized cost. The values of any foreign securities held by a fund are converted into U.S. dollars using an exchange rate obtained from an independent third party. The values of any mutual fund shares held by a fund are based on the NAVs of the shares. The values of any ETF or closed-end fund shares held by a fund are based on the market value of the shares.

When reliable market quotations are not readily available, securities are priced at their fair value (the amount that the owner might reasonably expect to receive upon the current sale of a security). A fund also will use fair-value pricing if the value of a security it holds has been materially affected by events occurring before the fund's pricing time but after the close of the primary markets or exchanges on which the security is traded. This most commonly occurs with foreign securities, which may trade on foreign exchanges that close many hours before the fund's pricing time. Intervening events might be company-specific (e.g., earnings report, merger announcement); country-specific (e.g., natural disaster, economic or political news, act of terrorism, interest rate change); or global. Intervening events include price movements in U.S. markets that are deemed to affect the value of foreign securities.

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Fair-value prices are determined by Vanguard according to procedures adopted by the board of trustees. When fair-value pricing is employed, the prices of securities used by a fund to calculate its NAV may differ from quoted or published prices for the same securities.

Vanguard fund share prices can be found daily in the mutual fund listings of most major newspapers under various "Vanguard" headings.

FINANCIAL HIGHLIGHTS

The following financial highlights table is intended to help you understand the Fund's financial performance for the periods shown, and certain information reflects financial results for a single Fund share. The total returns in the table represent the rate that an investor would have earned or lost each period on an investment in the Fund (assuming reinvestment of all distributions). This information has been derived from the financial statements audited by PricewaterhouseCoopers LLP, an independent registered public accounting firm, whose report--along with the Fund's financial statements--is included in the Fund's most recent annual report to shareholders. To receive a free copy of the latest annual or semiannual report, you may access a report online at www.vanguard.com, or you may contact Vanguard by telephone or by mail.


PLAIN TALK ABOUT HOW TO READ THE FINANCIAL HIGHLIGHTS TABLE

The Fund began fiscal year 2007 with a net asset value (price) of $21.50 per share. During the year, the Fund earned $0.48 per share from investment income (interest and dividends) and $4.95 per share from investments that had appreciated in value or that were sold for higher prices than the Fund paid for them.

Shareholders received $2.23 per share in the form of dividend and capital gains distributions. A portion of each year's distributions may come from the prior year's income or capital gains.

The share price at the end of the year was $24.70, reflecting earnings of $5.43 per share and distributions of $2.23 per share. This was an increase of $3.20 per share (from $21.50 at the beginning of the year to $24.70 at the end of the year). For a shareholder who reinvested the distributions in the purchase of more shares, the total return was 27.18% for the year.

As of October 31, 2007, the Fund had approximately $3.3 billion in net assets. For the year, the expense ratio was 0.35% ($3.50 per $1,000 of net assets), and the net investment income amounted to 1.99% of its average net assets. The Fund sold and replaced securities valued at 45% of its net assets.

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INTERNATIONAL EXPLORER FUND
 Year Ended October 31,
 -------------------------------------------------------------------------------------
 2007 2006 2005 2004 2003
------------------------------------------------------------------------------------------------------------------------------------
NET ASSET VALUE, BEGINNING OF PERIOD $21.50 $17.99 $14.64 $11.89 $8.11
------------------------------------------------------------------------------------------------------------------------------------
INVESTMENT OPERATIONS
------------------------------------------------------------------------------------------------------------------------------------
Net Investment Income .48 .52 .37 .273/1/ .14/1/
------------------------------------------------------------------------------------------------------------------------------------
Net Realized and Unrealized Gain (Loss) on 4.95 4.74 3.51 2.544 3.70
Investments
------------------------------------------------------------------------------------------------------------------------------------
Total from Investment Operations 5.43 5.26 3.88 2.817 3.84
------------------------------------------------------------------------------------------------------------------------------------
DISTRIBUTIONS
------------------------------------------------------------------------------------------------------------------------------------
Dividends from Net Investment Income (.58) (.40) (.24) (.067) (.06)
------------------------------------------------------------------------------------------------------------------------------------
Distributions from Realized Capital Gains (1.65) (1.35) (.29) -- --
------------------------------------------------------------------------------------------------------------------------------------
Total Distributions (2.23 ) (1.75) (.53) (.067) (.06)
------------------------------------------------------------------------------------------------------------------------------------
NET ASSET VALUE, END OF PERIOD $24.70 $21.50 $17.99 $14.64 $11.89
------------------------------------------------------------------------------------------------------------------------------------

TOTAL RETURN/2/ 27.18% 31.31% 27.04% 23.79% 47.70%
------------------------------------------------------------------------------------------------------------------------------------
RATIOS/SUPPLEMENTAL DATA
------------------------------------------------------------------------------------------------------------------------------------
Net Assets, End of Period (Millions) $3,252 $2,668 $2,130 $1,577 $420
------------------------------------------------------------------------------------------------------------------------------------
Ratio of Expenses to Average Net Assets/3/ 0.35% 0.44% 0.50% 0.57% 0.73%
------------------------------------------------------------------------------------------------------------------------------------
Ratio of Net Investment Income to Average 1.99% 2.56% 2.17% 1.96% 1.52%
Net Assets
------------------------------------------------------------------------------------------------------------------------------------
Turnover Rate 45% 32% 38% 21% 60%
------------------------------------------------------------------------------------------------------------------------------------
1 Calculated based on average shares outstanding.
2 Total returns do not reflect the 2% fee assessed on redemptions of shares purchased on or after June 27, 2003, and held for less
 than two months.
3 Includes performance-based investment advisory fee increases (decreases) of 0.00%, 0.02%, 0.02%, 0.00%, and 0.00%.

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INVESTING WITH VANGUARD

The Fund is an investment option in your retirement or savings plan. Your plan administrator or your employee benefits office can provide you with detailed information on how to participate in your plan and how to elect the Fund as an investment option.

. If you have any questions about the Fund or Vanguard, including those about the Fund's investment objective, strategies, or risks, contact Vanguard's Participant Access Center, toll-free, at 800-523-1188.

. If you have questions about your account, contact your plan administrator or the organization that provides recordkeeping services for your plan.

. Be sure to carefully read each topic that pertains to your transactions with Vanguard.

. Vanguard reserves the right to change these policies without prior notice to shareholders.

INVESTMENT OPTIONS AND ALLOCATIONS
Your plan's specific provisions may allow you to change your investment selections, the amount of your contributions, or how your contributions are allocated among the investment choices available to you. Contact your plan administrator or employee benefits office for more details.

TRANSACTIONS
Contribution, exchange, or redemption requests must be in good order. Good order means that your request includes complete information on your contribution, exchange, or redemption, and that Vanguard has received the appropriate assets.

In all cases, your transaction will be based on the Fund's next-determined NAV after Vanguard receives your request (or, in the case of new contributions, the next-determined NAV after Vanguard receives the order from your plan administrator). As long as this request is received before the close of trading on the New York Stock Exchange, generally 4 p.m., Eastern time, you will receive that day's NAV. This is known as your trade date.

REDEMPTION FEES
Redemption fees apply to shares exchanged out of a fund into which they were exchanged, rolled over, or transferred by the participant within the fund's redemption-fee period. The fee is withheld from redemption proceeds and is retained by the fund. Shares held longer than the redemption-fee holding period are not subject to the fee.

After exchanging shares that are exempt from redemption fees, shares you have held the longest will be exchanged first.

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For retirement plan participants, redemption fees do not apply to the following:

. Exchanges of shares purchased with participant payroll or employer contributions.

. Exchanges of shares purchased with reinvested dividend and capital gains distributions.

. Distributions, loans, and in-service withdrawals from a plan.

. Redemptions or transfers of shares as part of a plan termination or at the direction of the plan.

. Direct rollovers into IRAs.

. Conversions of shares from one share class to another in the same fund.

. Redemptions of shares to pay fund or account fees.

. Re-registrations of shares in the same fund.

EXCHANGES
The exchange privilege (your ability to redeem shares from one fund to purchase shares of another fund) may be available to you through your plan. Although we make every effort to maintain the exchange privilege, Vanguard reserves the right to revise or terminate this privilege, limit the amount of an exchange, or reject any exchange, at any time, without notice. Because excessive exchanges can disrupt the management of the Vanguard funds and increase their transaction costs, Vanguard places certain limits on the exchange privilege.

If you are exchanging out of any Vanguard fund (other than money market funds and short-term bond funds), the following policy applies, regardless of the dollar amount:

You must wait 60 days before exchanging back into the fund. The 60-day clock restarts after every exchange out of the fund.

The policy does not apply to the following:

. Exchange requests submitted by mail to Vanguard. (Exchange requests submitted by fax or wire are not mail requests and remain subject to the policy.)

. Purchases of shares with participant payroll or employer contributions or loan repayments.

. Purchases of shares with reinvested dividend or capital gains distributions.

. Distributions, loans, and in-service withdrawals from a plan.

. Redemptions of shares as part of a plan termination or at the direction of the plan.

. Redemptions of shares to pay fund or account fees.

. Share or asset transfers or rollovers.

. Re-registrations of shares within the same fund.

. Conversions of shares from one share class to another in the same fund.

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. Automated transactions executed during the first six months of a participant's enrollment in the Vanguard Managed Account Program.

Before making an exchange to or from another fund available in your plan, consider the following:

. Certain investment options, particularly funds made up of company stock or investment contracts, may be subject to unique restrictions.

. Be sure to read that fund's prospectus. Contact Vanguard's Participant Access Center, toll-free, at 800-523-1188 for a copy.

. Vanguard can accept exchanges only as permitted by your plan. Contact your plan administrator for details on other exchange policies that apply to your plan.

PLANS FOR WHICH VANGUARD DOES NOT SERVE AS RECORDKEEPER: If Vanguard does not serve as recordkeeper for your plan, your plan's recordkeeper will establish accounts in Vanguard funds. In such accounts, we cannot always monitor the trading activity of individual clients. However, we review trading activity at the omnibus level, and if we detect suspicious activity, we will investigate and take appropriate action. If necessary, Vanguard may prohibit additional purchases of fund shares by an intermediary or by certain of the intermediary's clients. Intermediaries may also monitor participants' trading activity in the Vanguard funds.

For those Vanguard funds that charge purchase or redemption fees, intermediaries that establish accounts in the Vanguard funds will be asked to assess purchase and redemption fees on participant accounts and remit these fees to the funds. The application of purchase and redemption fees and frequent-trading policies may vary among intermediaries. There are no assurances that Vanguard will successfully identify all intermediaries or that intermediaries will properly assess purchase and redemption fees or administer frequent-trading policies. If a firm other than Vanguard serves as recordkeeper for your plan, please read that firm's materials carefully to learn of any other rules or fees that may apply.

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PORTFOLIO HOLDINGS

We generally post on our website at www.vanguard.com, in the HOLDINGS section of the Fund's Profile page, a detailed list of the securities held by the Fund (under PORTFOLIO HOLDINGS), as of the most recent calendar-quarter-end. This list is generally updated within 30 days after the end of each calendar quarter. Vanguard may exclude any portion of these portfolio holdings from publication when deemed in the best interest of the Fund. We also generally post the ten largest stock portfolio holdings of the Fund and the percentage of the Fund's total assets that each of these holdings represents, as of the most recent calendar-quarter-end. This list is generally updated within 15 calendar days after the end of each calendar quarter. Please consult the Fund's Statement of Additional Information or our website for a description of the policies and procedures that govern disclosure of the Fund's portfolio holdings.

ACCESSING FUND INFORMATION BY COMPUTER

VANGUARD ON THE WORLD WIDE WEB WWW.VANGUARD.COM
Use your personal computer to visit Vanguard's education-oriented website, which provides timely news and information about Vanguard funds and services; the online Education Center that offers a variety of mutual fund classes; and easy-to-use, interactive tools to help you create your own investment and retirement strategies.

Vanguard, Connect with Vanguard, Plain Talk, Vanguard ETF, and the ship logo are trademarks of The Vanguard Group, Inc. All other marks are the exclusive property of their respective owners.

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GLOSSARY OF INVESTMENT TERMS

CAPITAL GAINS DISTRIBUTION. Payment to mutual fund shareholders of gains realized on securities that a fund has sold at a profit, minus any realized losses.

CASH INVESTMENTS. Cash deposits, short-term bank deposits, and money market instruments that include U.S. Treasury bills and notes, bank certificates of deposit (CDs), repurchase agreements, commercial paper, and banker's acceptances.

COMMON STOCK. A security representing ownership rights in a corporation. A stockholder is entitled to share in the company's profits, some of which may be paid out as dividends.

COUNTRY/REGIONAL RISK. The chance that world events--such as political upheaval, financial troubles, or natural disasters will adversely affect the value of securities issued by companies in foreign countries or regions. Because a fund may invest a large portion of its assets in securities of companies located in any one country or region, its performance may be hurt disproportionately by the poor performance of its investments in that area. Country/regional risk is especially high in emerging markets.

CURRENCY RISK. The chance that the value of a foreign investment, measured in U.S. dollars, will decrease because of unfavorable changes in currency exchange rates.

DIVIDEND DISTRIBUTION. Payment to mutual fund shareholders of income from interest or dividends generated by a fund's investments.

EXPENSE RATIO. The percentage of a fund's average net assets used to pay its expenses during a fiscal year. The expense ratio includes management expenses--such as advisory fees, account maintenance, reporting, accounting, legal, and other administrative expenses--and any 12b-1 distribution fees. It does not include the transaction costs of buying and selling portfolio securities.

GROWTH FUND. A mutual fund that emphasizes stocks of companies believed to have above-average potential for growth in revenue, earnings, cash flow, or other similar criteria. These stocks typically have low dividend yields and above-average prices in relation to such measures as earnings and book value.

INCEPTION DATE. The date on which the assets of a fund (or one of its share classes) are first invested in accordance with the fund's investment objective. For funds with a subscription period, the inception date is the day after that period ends. Investment performance is measured from the inception date.

INTERNATIONAL STOCK FUND. A mutual fund that invests in the stocks of companies located outside the United States.

INVESTMENT ADVISOR. An organization that is responsible for making the day-to-day decisions regarding a fund's investments.

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MUTUAL FUND. An investment company that pools the money of many people and invests it in a variety of securities in an effort to achieve a specific objective over time.

NET ASSET VALUE (NAV). The market value of a mutual fund's total assets, minus liabilities, divided by the number of shares outstanding. The value of a single share is also called its share value or share price.

PRINCIPAL. The face value of a debt instrument or the amount of money put into an investment.

SECURITIES. Stocks, bonds, money market instruments, and other investment vehicles.

TOTAL RETURN. A percentage change, over a specified time period, in a mutual fund's net asset value, assuming the reinvestment of all distributions of dividends and
capital gains.

VALUE FUND. A mutual fund that emphasizes stocks whose prices typically are below average in relation to such measures as earnings and book value. These stocks often have above-average dividend yields.

VOLATILITY. The fluctuations in value of a mutual fund or other security. The greater a fund's volatility, the wider the fluctuations in its returns.

YIELD. Income (interest or dividends) earned by an investment, expressed as a percentage of the investment's price.

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[SHIP LOGO][VANGUARD/(R)/ LOGO]

Institutional Division
P.O. Box 2900
Valley Forge, PA 19482-2900

CONNECT WITH VANGUARD/(R)/ > www.vanguard.com

FOR MORE INFORMATION
If you would like more information about Vanguard International Explorer Fund, the following documents are available free upon request:

ANNUAL/SEMIANNUAL REPORTS TO SHAREHOLDERS
Additional information about the Fund's investments is available in the Fund's annual and semiannual reports to shareholders. In the annual report, you will find a discussion of the market conditions and investment strategies that significantly affected the Fund's performance during its last fiscal year.

STATEMENT OF ADDITIONAL INFORMATION (SAI)
The SAI provides more detailed information about the Fund.

The current annual and semiannual reports and the SAI are incorporated by reference into (and are thus legally a part of) this prospectus.

To receive a free copy of the latest annual or semiannual report or the SAI, or to request additional information about the Fund or other Vanguard funds, please visit www.vanguard.com or contact us as follows:

The Vanguard Group
Participant Access Center
P.O. Box 2900
Valley Forge, PA 19482-2900
Telephone: 800-523-1188
Text telephone for people with hearing impairment: 800-749-7273

INFORMATION PROVIDED BY THE SECURITIES AND EXCHANGE COMMISSION (SEC) You can review and copy information about the Fund (including the SAI) at the SEC's Public Reference Room in Washington, DC. To find out more about this public service, call the SEC at 202-551-8090. Reports and other information about the Fund are also available in the EDGAR database on the SEC's Internet site at www.sec.gov, or you can receive copies of this information, for a fee, by electronic request at the following e-mail address: publicinfo@sec.gov, or by writing the Public Reference Section, Securities and Exchange Commission, Washington, DC 20549-0102.

Fund's Investment Company Act file number: 811-07443

(C) 2008 The Vanguard Group, Inc. All rights reserved. Vanguard Marketing Corporation, Distributor.

I126 022008


VANGUARD/(R)/ HIGH DIVIDEND YIELD
INDEX FUND

> PROSPECTUS

INVESTOR SHARES

February 22, 2008


[SHIP LOGO][VANGUARD/(R)/ LOGO]


This prospectus contains financial data for the Fund through the fiscal year ended October 31, 2007.

NEITHER THE SECURITIES AND EXCHANGE COMMISSION NOR ANY STATE SECURITIES COMMISSION HAS APPROVED OR DISAPPROVED OF THESE SECURITIES OR PASSED UPON THE ACCURACY OR ADEQUACY OF THIS PROSPECTUS. ANY REPRESENTATION TO THE CONTRARY IS A CRIMINAL OFFENSE.


CONTENTS

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Fund Profile 1 Investing With Vanguard 18
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Investing in Index Funds 5 Purchasing Shares 18
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More on the Fund 6 Converting Shares 21
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 The Fund and Vanguard 10 Redeeming Shares 21
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 Investment Advisor 11 Exchanging Shares 24
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 Dividends, Capital Gains, and 12 Frequent-Trading Limits 24
 Taxes
-------------------------------------------------------------------------------
 Share Price 14 Other Rules You Should Know 26
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Financial Highlights 16 Fund and Account Updates 30
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 Contacting Vanguard 32
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 ETF Shares 34
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 Glossary of Investment Terms 39
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WHY READING THIS PROSPECTUS IS IMPORTANT
This prospectus explains the investment objective, policies, strategies, and risks associated with the Fund. To highlight terms and concepts important to mutual fund investors, we have provided Plain Talk/(R)/ explanations along the way. Reading the prospectus will help you decide whether the Fund is the right investment for you. We suggest that you keep this prospectus for future reference.

SHARE CLASS OVERVIEW

This prospectus offers the Fund's Investor Shares. The Fund also provides an exchange-traded class of shares (ETF Shares), which are offered through a separate prospectus. A brief description of ETF Shares and how to convert into them appears on pages 34 to 38 of this prospectus.

The Fund's separate share classes have different expenses; as a result, their investment performances will differ.


FUND PROFILE

INVESTMENT OBJECTIVE
The Fund seeks to track the performance of a benchmark index that measures the investment return of common stocks of companies that are characterized by high dividend yields.

PRIMARY INVESTMENT STRATEGIES

The Fund employs a "passive management"--or indexing--investment approach designed to track the performance of the FTSE/(R)/ High Dividend Yield Index, which consists of common stocks of companies that pay dividends that generally are higher than average. The Fund attempts to replicate the target index by investing all, or substantially all, of its assets in the stocks that make up the Index, holding each stock in approximately the same proportion as its weighting in the Index.

PRIMARY RISKS
An investment in the Fund could lose money over short or even long periods. You should expect the Fund's share price and total return to fluctuate within a wide range, like the fluctuations of the overall stock market. The Fund's performance could be hurt by:

. Stock market risk, which is the chance that stock prices overall will decline. Stock markets tend to move in cycles, with periods of rising prices and periods of falling prices.

. Investment style risk, which is the chance that returns from high dividend-paying stocks will trail returns from the overall stock market. Specific types of stocks tend to go through cycles of doing better--or worse--than the stock market in general. These periods have, in the past, lasted for as long as several years.

PERFORMANCE/RISK INFORMATION

The following bar chart and table are intended to help you understand the risks of investing in the Fund. The bar chart shows the performance of the Fund's Investor Shares in its first full calendar year. The table shows how the average annual total returns of the Investor Shares compare with those of the Fund's target index. Keep in mind that the Fund's past performance (before and after taxes) does not indicate how the Fund will perform in the future.

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ANNUAL TOTAL RETURN--INVESTOR SHARES

BAR CHART
[-20% to 20%]

2007 1.54%

During the period shown in the bar chart, the highest return for a calendar quarter was 5.09% (quarter ended June 30, 2007), and the lowest return for a quarter was -5.20% (quarter ended December 31, 2007).

AVERAGE ANNUAL TOTAL RETURNS FOR PERIODS ENDED DECEMBER 31, 2007

 Since
 1 Year Inception/1/
-------------------------------------------------------------------------------
VANGUARD HIGH DIVIDEND YIELD INDEX
FUND INVESTOR SHARES
-------------------------------------------------------------------------------
Return Before Taxes 1.54% 3.89%
-------------------------------------------------------------------------------
Return After Taxes on Distributions 1.18 3.51
-------------------------------------------------------------------------------
Return After Taxes on Distributions 1.51 3.32
and Sale of Fund Shares
-------------------------------------------------------------------------------
FTSE HIGH DIVIDEND YIELD INDEX
(reflects no deduction for fees, 1.81% 4.15%
expenses, or taxes)
-------------------------------------------------------------------------------

1 Since-inception returns are from November 16, 2006--the inception date of the Investor Shares--through
December 31, 2007.

NOTE ON AFTER-TAX RETURNS. Actual after-tax returns depend on your tax situation and may differ from those shown in the preceding table. When after-tax returns are calculated, it is assumed that the shareholder was in the highest federal marginal income tax bracket at the time of each distribution of income or capital gains or upon redemption. State and local income taxes are not reflected in the calculations. Please note that after-tax returns are shown only for the Investor Shares and will differ for each share class in an amount approximately equal to the difference in expense ratios. After-tax returns are not relevant for a shareholder who holds fund shares in a tax-deferred account, such as an individual retirement account or a 401(k) plan. Also, figures captioned Return After Taxes on Distributions and Sale of Fund Shares will be

2

higher than other figures for the same period if a capital loss occurs upon redemption and results in an assumed tax deduction for the shareholder.

FEES AND EXPENSES

The following table describes the fees and expenses you may pay if you buy and hold Investor Shares of the Fund. As is the case with all mutual funds, transaction costs incurred by the Fund for buying and selling securities are not reflected in the table. However, these costs are reflected in the investment performance figures included in this prospectus. The expenses shown under Annual Fund Operating Expenses are based on those incurred in the fiscal year ended October 31, 2007.

SHAREHOLDER FEES
(Fees paid directly from your investment)

-------------------------------------------------------------------------------
Sales Charge (Load) Imposed on Purchases None
-------------------------------------------------------------------------------
Purchase Fee None/1/
-------------------------------------------------------------------------------
Sales Charge (Load) Imposed on Reinvested Dividends None
-------------------------------------------------------------------------------
Redemption Fee None
-------------------------------------------------------------------------------
Account Service Fee (for accounts under $10,000) $20/year/2/
-------------------------------------------------------------------------------

ANNUAL FUND OPERATING EXPENSES
(Expenses deducted from the Fund's assets)

-------------------------------------------------------------------------------
Management Expenses 0.27%
-------------------------------------------------------------------------------
12b-1 Distribution Fee None
-------------------------------------------------------------------------------
Other Expenses 0.13%
-------------------------------------------------------------------------------
Total Annual Fund Operating Expenses 0.40%
-------------------------------------------------------------------------------

1 The Fund reserves the right to deduct a purchase fee from future purchases of shares.
2 If applicable, the account service fee will be assessed by redeeming fund shares in the amount of $20.

The following example is intended to help you compare the cost of investing in the Fund's Investor Shares with the cost of investing in other mutual funds. It illustrates the hypothetical expenses that you would incur over various periods if you invest $10,000 in the Fund's shares. This example assumes that the Shares provide a return of 5% a year and that operating expenses remain the same. The results apply whether or not you redeem your investment at the end of the given period.

1 Year 3 Years 5 Years 10 Years
-------------------------------------------------------------------
$41 $128 $224 $505
-------------------------------------------------------------------

3

This example should not be considered to represent actual expenses or performance from the past or for the future. Actual future expenses may be higher or lower than those shown.


PLAIN TALK ABOUT FUND EXPENSES

All mutual funds have operating expenses. These expenses, which are deducted from a fund's gross income, are expressed as a percentage of the net assets of the fund. Vanguard High Dividend Yield Index Fund Investor Shares' expense ratio in fiscal year 2007 was 0.40%, or $4.00 per $1,000 of average net assets. The average large-cap value fund had expenses in 2006 of 1.35%, or $13.50 per $1,000 of average net assets (derived from data provided by Lipper Inc., which reports on the mutual fund industry). Management expenses, which are one part of operating expenses, include investment advisory fees as well as other costs of managing a fund--such as account maintenance, reporting, accounting, legal, and other administrative expenses.


PLAIN TALK ABOUT COSTS OF INVESTING

Costs are an important consideration in choosing a mutual fund. That's because you, as a shareholder, pay the costs of operating a fund, plus any transaction costs incurred when the fund buys or sells securities. These costs can erode a substantial portion of the gross income or the capital appreciation a fund achieves. Even seemingly small differences in expenses can, over time, have a dramatic effect on a fund's performance.

4

ADDITIONAL INFORMATION
As of October 31, 2007
-----------------------------------------------------------------------------------------------
Net Assets (all share classes) $181 million
-----------------------------------------------------------------------------------------------
Investment Advisor The Vanguard Group, Inc., Valley Forge, Pa., since inception
-----------------------------------------------------------------------------------------------
Dividends and Capital Gains Dividends are distributed quarterly in March, June,
 September, and December; capital gains, if any, are
 distributed in December.
-----------------------------------------------------------------------------------------------
Suitable for IRAs Yes
-----------------------------------------------------------------------------------------------
Inception Date November 16, 2006
-----------------------------------------------------------------------------------------------
Minimum Initial Investment $3,000
-----------------------------------------------------------------------------------------------
Newspaper Abbreviation HiDvdYld
-----------------------------------------------------------------------------------------------
Vanguard Fund Number 623
-----------------------------------------------------------------------------------------------
CUSIP Number 921946505
-----------------------------------------------------------------------------------------------
Ticker Symbol VHDYX
-----------------------------------------------------------------------------------------------

INVESTING IN INDEX FUNDS

WHAT IS INDEXING?
Indexing is an investment strategy for tracking the performance of a specified market benchmark, or "index." An index is an unmanaged group of securities whose overall performance is used as a standard to measure the investment performance of a particular market. There are many types of indexes. Some represent entire markets--such as the U.S. stock market or the U.S. bond market. Other indexes cover market segments--such as small-capitalization stocks or short-term bonds.

An index fund holds all, or a representative sample, of the securities that make up its target index. Index funds attempt to mirror what the target index does, for better or worse. However, an index fund does not always perform exactly like its target index. For example, like all mutual funds, index funds have operating expenses and transaction costs. Market indexes do not, and therefore will usually have a slight performance advantage over funds that track them.

Index funds typically have the following characteristics:

. Variety of investments. Most Vanguard index funds generally invest in the securities of a wide variety of companies and industries.

5

. Relative performance consistency. Because they seek to track market benchmarks, index funds usually do not perform dramatically better or worse than their benchmarks.

. Low cost. Index funds are inexpensive to run, compared with actively managed funds. They have low or no research costs and typically keep trading activity--and thus brokerage commissions and other transaction costs--to a minimum.

MORE ON THE FUND

This prospectus describes the primary risks you would face as a Fund shareholder. It is important to keep in mind one of the main axioms of investing: The higher the risk of losing money, the higher the potential reward. The reverse, also, is generally true: The lower the risk, the lower the potential reward. As you consider an investment in any mutual fund, you should take into account your personal tolerance for fluctuations in the securities markets. Look for this FLAG LOGO symbol throughout the prospectus. It is used to mark detailed information about the more significant risks that you would confront as a Fund shareholder.

The following sections explain the primary investment strategies and policies that the Fund uses in pursuit of its objective. The Fund's board of trustees, which oversees the Fund's management, may change investment strategies or policies in the interest of shareholders without a shareholder vote, unless those strategies or policies are designated as fundamental. Note that the Fund's investment objective is not fundamental and may be changed without a shareholder vote. Under normal circumstances, the Fund will invest at least 80% of its assets in the stocks that make up its target index. The Fund may change its 80% policy only upon 60 days' notice to shareholders.

MARKET EXPOSURE
The Fund invests mainly in common stocks of companies that are characterized by high dividend yields relative to the overall market's yield. Stocks purchased by the Fund are expected to pay high dividends and may also have the potential for long-term capital appreciation.

FLAG LOGO
THE FUND IS SUBJECT TO STOCK MARKET RISK, WHICH IS THE CHANCE THAT STOCK PRICES OVERALL WILL DECLINE. STOCK MARKETS TEND TO MOVE IN CYCLES, WITH PERIODS OF RISING PRICES AND PERIODS OF FALLING PRICES.

6

To illustrate the volatility of stock prices, the following table shows the best, worst, and average annual total returns for the U.S. stock market over various periods as measured by the Standard & Poor's 500 Index, a widely used barometer of market activity. (Total returns consist of dividend income plus change in market price.) Note that the returns shown do not include the costs of buying and selling stocks or other expenses that a real-world investment portfolio would incur.

U.S. STOCK MARKET RETURNS
(1926-2007)

 1 Year 5 Years 10 Years 20 Years
---------------------------------------------------------------------------
Best 54.2% 28.6% 19.9% 17.8%
---------------------------------------------------------------------------
Worst -43.1 -12.4 -0.8 3.1
---------------------------------------------------------------------------
Average 12.2 10.4 11.1 11.4
---------------------------------------------------------------------------

The table covers all of the 1-, 5-, 10-, and 20-year periods from 1926 through 2007. You can see, for example, that although the average return on common stocks for all of the 5-year periods was 10.4%, average returns for individual 5-year periods ranged from -12.4% (from 1928 through 1932) to 28.6% (from 1995 through 1999). These average returns reflect past performance of common stocks; you should not regard them as an indication of future performance of either the stock market as a whole or the Fund in particular.

Stocks of publicly traded companies and funds that invest in stocks are often classified according to market value, or market capitalization. These classifications typically include small-cap, mid-cap, and large-cap. It's important to understand that, for both companies and stock funds, market-capitalization ranges change over time. Also, interpretations of size vary, and there are no "official" definitions of small-, mid-, and large-cap, even among Vanguard fund advisors. The asset-weighted median market capitalization of the Fund as of October 31, 2007, was $115.6 billion.

FLAG LOGO
THE FUND IS SUBJECT TO INVESTMENT STYLE RISK, WHICH IS THE CHANCE THAT RETURNS FROM HIGH DIVIDEND-PAYING STOCKS WILL TRAIL RETURNS FROM THE OVERALL STOCK MARKET. SPECIFIC TYPES OF STOCKS TEND TO GO THROUGH CYCLES OF DOING BETTER--OR WORSE--THAN THE STOCK MARKET IN GENERAL. THESE PERIODS HAVE, IN THE PAST, LASTED FOR AS LONG AS SEVERAL YEARS.

SECURITY SELECTION

The Fund attempts to track the investment performance of the FTSE High Dividend Yield Index, which consists of companies whose common stocks are characterized by high dividend yields relative to the market. The FTSE High Dividend Yield Index is maintained by FTSE Group (FTSE), a widely known global index provider that currently calculates more than 100,000 indexes.

7

The Fund uses the replication method of indexing. This means that the Fund holds each security found in the FTSE High Dividend Yield Index in approximately the same proportion as represented in the Index itself. For example, if 5% of the Index were made up of the stock of a specific company, the Fund would invest about 5% of its assets in that company.

OTHER INVESTMENT POLICIES AND RISKS
The Fund reserves the right to substitute a different index for the index it currently tracks if the current index is discontinued, if the Fund's agreement with the sponsor of its target index is terminated, or for any other reason determined in good faith by the Fund's board of trustees. In any such instance, the substitute index would measure the same market segment as the current index.

The Fund may invest in foreign securities to the extent necessary to carry out its investment strategy of holding all, or substantially all, of the stocks that make up the index it tracks. It is not expected that the Fund will invest more than 5% of its assets in foreign securities.

To track its target index as closely as possible, the Fund attempts to remain fully invested in stocks. To help stay fully invested and to reduce transaction costs, the Fund may invest, to a limited extent, in derivatives. Generally speaking, a derivative is a financial contract whose value is based on the value of a financial asset (such as a stock, bond, or currency), a physical asset (such as gold), or a market index (such as the S&P 500 Index). The Fund will not use derivatives for speculation or for the purpose of leveraging (magnifying) investment returns.

CASH MANAGEMENT

The Fund's daily cash balance may be invested in one or more Vanguard CMT Funds, which are very low-cost money market funds. When investing in a Vanguard CMT Fund, the Fund bears its proportionate share of the at-cost expenses of the CMT Fund in which it invests.

TEMPORARY INVESTMENT MEASURES
The Fund may temporarily depart from its normal investment policies and strategies when doing so is believed to be in the Fund's best interest, so long as the alternative is consistent with the Fund's investment objective. For instance, the Fund may invest beyond the normal limits in derivatives or ETFs that are consistent with the Fund's objective when those instruments are more favorably priced or provide needed liquidity, as might be the case when the Fund receives large cash flows that it cannot prudently invest immediately.

8

FREQUENT TRADING OR MARKET-TIMING
BACKGROUND. Some investors try to profit from strategies involving frequent trading of mutual fund shares, such as market-timing. For funds holding foreign securities, investors may try to take advantage of an anticipated difference between the price of the fund's shares and price movements in overseas markets, a practice also known as time-zone arbitrage. Investors also may try to engage in frequent trading of funds holding investments such as small-cap stocks and high-yield bonds. As money is shifted into and out of a fund by a shareholder engaging in frequent trading, a fund incurs costs for buying and selling securities, resulting in increased brokerage and administrative costs. These costs are borne by all fund shareholders, including the long-term investors who do not generate the costs. In addition, frequent trading may interfere with an advisor's ability to efficiently manage the fund.

POLICIES TO ADDRESS FREQUENT TRADING. The Vanguard funds (other than money market funds, short-term bond funds, and Vanguard ETF(TM) Shares) do not knowingly accommodate frequent trading. The board of trustees of each Vanguard fund has adopted policies and procedures reasonably designed to detect and discourage frequent trading and, in some cases, to compensate the fund for the costs associated with it. Although there is no assurance that Vanguard will be able to detect or prevent frequent trading or market-timing in all circumstances, the following policies have been adopted to address these issues:

. Each Vanguard fund reserves the right to reject any purchase request--including exchanges from other Vanguard funds--without notice and regardless of size. For example, a purchase request could be rejected if Vanguard determines that such purchase may negatively affect a fund's operation or performance or because of a history of frequent trading by the investor.

. Each Vanguard fund (other than money market funds, short-term bond funds, and ETF Shares) generally prohibits, except as otherwise noted in the INVESTING WITH VANGUARD section, an investor's purchases or exchanges into a fund account for 60 calendar days after the investor has redeemed or exchanged out of that fund account.

. Certain Vanguard funds charge shareholders purchase and/or redemption fees on transactions.

See the INVESTING WITH VANGUARD section of this prospectus for further details on Vanguard's transaction policies.

Each fund (other than money market funds), in determining its net asset value, will use fair-value pricing as described in the SHARE PRICE section. Fair-value pricing may reduce or eliminate the profitability of certain frequent-trading strategies.

DO NOT INVEST WITH VANGUARD IF YOU ARE A MARKET-TIMER.

9

Turnover Rate

Although the Fund normally seeks to invest for the long term, it may sell securities regardless of how long they have been held. Generally, index-oriented funds sell securities only in response to redemption requests or changes in the composition of a target index. The Financial Highlights section of this prospectus shows the Fund's turnover rate. A turnover rate of 100%, for example, would mean that the Fund had sold and replaced securities valued at 100% of its net assets within a one-year period. The average turnover rate for indexed domestic stock funds was approximately 63%, and for domestic stock funds, the average turnover rate was approximately 94%, both as reported by Morningstar, Inc., on October 31, 2007.


PLAIN TALK ABOUT TURNOVER RATE

Before investing in a mutual fund, you should review its turnover rate. This gives an indication of how transaction costs, which are not included in the fund's expense ratio, could affect the fund's future returns. In general, the greater the volume of buying and selling by the fund, the greater the impact that brokerage commissions and other transaction costs will have on its return. Also, funds with high turnover rates may be more likely to generate capital gains that must be distributed to shareholders as taxable income.

THE FUND AND VANGUARD

The Fund is a member of The Vanguard Group, a family of 37 investment companies with more than 150 funds holding assets in excess of $1.2 trillion. All of the fundsthat are members of The Vanguard Group share in the expenses associated with administrative services and business operations, such as personnel, office space, equipment, and advertising.

Vanguard also provides marketing services to the funds. Although shareholders do not pay sales commissions or 12b-1 distribution fees, each fund (or in the case of a fund with multiple share classes, each share class of the fund) pays its allocated share of The Vanguard Group's marketing costs.

10


PLAIN TALK ABOUT VANGUARD'S UNIQUE CORPORATE STRUCTURE

The Vanguard Group is truly a MUTUAL mutual fund company. It is owned jointly by the funds it oversees and thus indirectly by the shareholders in those funds. Most other mutual funds are operated by management companies that may be owned by one person, by a group of individuals, or by investors who own the management company's stock. The management fees charged by these companies include a profit component over and above the companies' cost of providing services. By contrast, Vanguard provides services to its member funds on an at-cost basis, with no profit component, which helps to keep the funds' expenses low.

INVESTMENT ADVISOR

The Vanguard Group, Inc. (Vanguard), P.O. Box 2600, Valley Forge, PA 19482, which began operations in 1975, serves as advisor to the Fund through its Quantitative Equity Group. As of October 31, 2007, Vanguard served as advisor for approximately $1 trillion in assets. Vanguard manages the Fund on an at-cost basis, subject to the supervision and oversight of the trustees and officers of the Fund.

For the fiscal year ended October 31, 2007, the advisory expenses represented an effective annual rate of 0.01% of the Fund's average net assets.

For a discussion of why the board of trustees approved the Fund's investment advisory arrangement, see the most recent semiannual report to shareholders covering the fiscal period ended April 30.

GEORGE U. SAUTER is Chief Investment Officer and Managing Director of Vanguard. As Chief Investment Officer, he is responsible for the oversight of Vanguard's Quantitative Equity and Fixed Income Groups. The investments managed by these two groups include active quantitative equity funds, equity index funds, active bond funds, index bond funds, stable value portfolios, and money market funds. Since joining Vanguard in 1987, Mr. Sauter has been a key contributor to the development of Vanguard's stock indexing and active quantitative equity investment strategies. He received his A.B. in Economics from Dartmouth College and an M.B.A. in Finance from the University of Chicago.

11


PLAIN TALK ABOUT THE FUND'S PORTFOLIO MANAGER

The manager primarily responsible for the day-to-day management of the Fund is:

Michael Perre, Principal of Vanguard. He has been with Vanguard since 1990; has managed investment portfolios since 1999; and has managed the Fund since its inception. Education: B.A., Saint Joseph's University; M.B.A., Villanova University.

The Statement of Additional Information provides information about the portfolio manager's compensation, other accounts under management, and ownership of securities in the Fund.

DIVIDENDS, CAPITAL GAINS, AND TAXES

FUND DISTRIBUTIONS
The Fund distributes to shareholders virtually all of its net income (interest and dividends less expenses) as well as any net capital gains realized from the sale of its holdings. Income dividends generally are distributed quarterly in March, June, September, and December; capital gains distributions generally occur annually in December. You can receive distributions of income or capital gains in cash, or you can have them automatically reinvested in more shares of the Fund.


PLAIN TALK ABOUT DISTRIBUTIONS

As a shareholder, you are entitled to your portion of a fund's income from interest and dividends as well as gains from the sale of investments. Income consists of both the dividends that the fund earns from any stock holdings and the interest it receives from any money market and bond investments. Capital gains are realized whenever the fund sells securities for higher prices than it paid for them. These capital gains are either short-term or long-term, depending on whether the fund held the securities for one year or less or for more than one year. You receive the fund's earnings as either a dividend or capital gains distribution.

BASIC TAX POINTS
Vanguard will send you a statement each year showing the tax status of all your distributions. In addition, investors in taxable accounts should be aware of the following basic tax points:

. Distributions are taxable to you for federal income tax purposes, whether or not you reinvest these amounts in additional Fund shares.

12

. Distributions declared in December--if paid to you by the end of January--are taxable for federal income tax purposes as if received in December.

. Any dividend and short-term capital gains distributions that you receive are taxable to you as ordinary income for federal income tax purposes. If you are an individual and meet certain holding-period requirements with respect to your Fund shares, you may be eligible for reduced federal tax rates on "qualified dividend income," if any, distributed by the Fund.

. Any distributions of net long-term capital gains are taxable to you as long-term capital gains for federal income tax purposes, no matter how long you've owned shares in the Fund.

. Capital gains distributions may vary considerably from year to year as a result of the Fund's normal investment activities and cash flows.

. A sale or exchange of Fund shares is a taxable event. This means that you may have a capital gain to report as income, or a capital loss to report as a deduction, when you complete your federal income tax return.

. Dividend and capital gains distributions that you receive, as well as your gains or losses from any sale or exchange of Fund shares, may be subject to state and local income taxes.

. Any conversion between classes of shares of the same fund is a nontaxable event. By contrast, an exchange between classes of shares of different funds is a taxable event.


PLAIN TALK ABOUT "BUYING A DIVIDEND"

Unless you are investing through a tax-deferred retirement account (such as an IRA), you should consider avoiding a purchase of fund shares shortly before the fund makes a distribution, because doing so can cost you money in taxes. This is known as "buying a dividend." For example: On December 15, you invest $5,000, buying 250 shares for $20 each. If the fund pays a distribution of $1 per share on December 16, its share price will drop to $19 (not counting market change). You still have only $5,000 (250 shares x $19 = $4,750 in share value, plus 250 shares x $1 = $250 in distributions), but you owe tax on the $250 distribution you received--even if you reinvest it in more shares. To avoid "buying a dividend," check a fund's distribution schedule before you invest.

GENERAL INFORMATION

BACKUP WITHHOLDING. By law, Vanguard must withhold 28% of any taxable distributions or redemptions from your account if you do not:

. Provide us with your correct taxpayer identification number;

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. Certify that the taxpayer identification number is correct; and

. Confirm that you are not subject to backup withholding.

Similarly, Vanguard must withhold taxes from your account if the IRS instructs us to do so.

Foreign investors. Vanguard funds generally are not sold outside the United States, except to certain qualified investors. If you reside outside the United States, please consult our website at www.vanguard.com and review "Non-U.S. investors." Foreign investors should be aware that U.S. withholding and estate taxes may apply to any investments in Vanguard funds.

Invalid addresses. If a dividend or capital gains distribution check mailed to your address of record is returned as undeliverable, Vanguard will automatically reinvest all future distributions until you provide us with a valid mailing address.

Tax consequences. This prospectus provides general tax information only. If you are investing through a tax-deferred retirement account, such as an IRA, special tax rules apply. Please consult your tax advisor for detailed information about a fund's tax consequences for you.

SHARE PRICE

The Fund's share price, called its net asset value, or NAV, is calculated each business day as of the close of regular trading on the New York Stock Exchange, generally 4 p.m., Eastern time. Each share class has its own NAV, which is computed by dividing the net assets allocated to each share class by the number of Fund shares outstanding for that class. On holidays or other days when the Exchange is closed, the NAV is not calculated, and the Fund does not transact purchase or redemption requests. However, on those days the value of the Fund's assets may be affected to the extent that the Fund holds foreign securities that trade on foreign markets that
are open.

Stocks held by a Vanguard fund are valued at their market value when reliable market quotations are readily available. Certain short-term debt instruments used to manage a fund's cash are valued on the basis of amortized cost. The values of any foreign securities held by a fund are converted into U.S. dollars using an exchange rate obtained from an independent third party. The values of any mutual fund shares held by a fund are based on the NAVs of the shares. The values of any ETF or closed-end fund shares held by a fund are based on the market value of the shares.

14

When reliable market quotations are not readily available, securities are priced at their fair value (the amount that the owner might reasonably expect to receive upon the current sale of a security). A fund also will use fair-value pricing if the value of a security it holds has been materially affected by events occurring before the fund's pricing time but after the close of the primary markets or exchanges on which the security is traded. This most commonly occurs with foreign securities, which may trade on foreign exchanges that close many hours before the fund's pricing time. Intervening events might be company-specific (e.g., earnings report, merger announcement); country-specific (e.g., natural disaster, economic or political news, act of terrorism, interest rate change); or global. Intervening events include price movements in U.S. markets that are deemed to affect the value of foreign securities. Fair-value pricing may be used for domestic securities--for example, if (1) trading in a security is halted and does not resume before the fund's pricing time or if a security does not trade in the course of a day, and (2) the fund holds enough of the security that its price could affect the fund's NAV.

Fair-value prices are determined by Vanguard according to procedures adopted by the board of trustees. When fair-value pricing is employed, the prices of securities used by a fund to calculate its NAV may differ from quoted or published prices for the same securities.

Vanguard fund share prices can be found daily in the mutual fund listings of most major newspapers under various "Vanguard" headings.

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FINANCIAL HIGHLIGHTS

The following financial highlights table is intended to help you understand the Investor Shares' financial performance for the period shown, and certain information reflects financial results for a single Investor Share. The total return in the table represents the rate that an investor would have earned during the period on an investment in the Investor Shares (assuming reinvestment of all distributions). This information has been derived from the financial statements audited by PricewaterhouseCoopers LLP, an independent registered public accounting firm, whose report--along with the Fund's financial statements--is included in the Fund's annual report to shareholders. To receive a free copy of the latest annual or semiannual report, you may access a report online at www.vanguard.com, or you may contact Vanguard by telephone or by mail.


PLAIN TALK ABOUT HOW TO READ THE FINANCIAL HIGHLIGHTS TABLES

The Investor Shares began the fiscal period ended October 31, 2007 with a net asset value (price) of $20.00 per share. During the period, each Investor Share earned $0.542 from investment income (interest and dividends) and $1.477 from investments that had appreciated in value or that were sold for higher prices than the Fund paid for them.

Shareholders received $0.409 per share in the form of dividend distributions.

The share price at the end of the period was $21.61, reflecting earnings of $2.019 per share and distributions of $0.409 per share. This was an increase of $1.61 per share (from $20.00 at the beginning of the period to $21.61 at the end of the period). For a shareholder who reinvested the distributions in the purchase of more shares, the total return was 10.16% for the period.

As of October 31, 2007, the Investor Shares had approximately $67 million in net assets. For the period, the annualized expense ratio was 0.40% ($4.00 per $1,000 of net assets), and the annualized net investment income amounted to 2.43% of average net assets. The Fund sold and replaced securities valued at an annualized rate of 11% of its net assets.

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HIGH DIVIDEND YIELD INDEX FUND INVESTOR SHARES

 November 16, 2006/1/
 to October 31,2007
----------------------------------------------------------------------------------------------------------------------------------
NET ASSET VALUE, BEGINNING OF PERIOD $20.00
----------------------------------------------------------------------------------------------------------------------------------
INVESTMENT OPERATIONS
----------------------------------------------------------------------------------------------------------------------------------
Net Investment Income .542/2/
----------------------------------------------------------------------------------------------------------------------------------
Net Realized and Unrealized Gain (Loss) on Investments 1.477
----------------------------------------------------------------------------------------------------------------------------------
Total from Investment Operations 2.019
----------------------------------------------------------------------------------------------------------------------------------
Distributions
----------------------------------------------------------------------------------------------------------------------------------
Dividends from Net Investment Income (.409)
----------------------------------------------------------------------------------------------------------------------------------
Distributions from Realized Capital Gains --
----------------------------------------------------------------------------------------------------------------------------------
Total Distributions (.409)
----------------------------------------------------------------------------------------------------------------------------------
NET ASSET VALUE, END OF PERIOD $21.61
----------------------------------------------------------------------------------------------------------------------------------
TOTAL RETURN/3/ 10.16%

----------------------------------------------------------------------------------------------------------------------------------
RATIOS/SUPPLEMENTAL DATA
----------------------------------------------------------------------------------------------------------------------------------
Net Assets, End of Period (Millions) $67
----------------------------------------------------------------------------------------------------------------------------------
Ratio of Expenses to Average Net Assets 0.40%/4/
----------------------------------------------------------------------------------------------------------------------------------
Ratio of Net Investment Income to Average Net Assets 2.43%/4/
----------------------------------------------------------------------------------------------------------------------------------
Turnover Rate/5/ 11%
----------------------------------------------------------------------------------------------------------------------------------
1 Inception.
2 Calculated based on average shares outstanding.
3 Total returns do not include the account service fee that may be applicable to certain accounts with balances
 below $10,000.
4 Annualized.
5 Excludes the value of portfolio securities received or delivered as a result of in-kind purchases or redemptions of the
 fund's capital shares, including ETF creation units.

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INVESTING WITH VANGUARD

This section of the prospectus explains the basics of doing business with Vanguard. Be sure to carefully read each topic that pertains to your relationship with Vanguard. Vanguard reserves the right to change the following policies, without prior notice to shareholders. Please call or check online for current information.

Each fund you hold in an account is a separate "fund account." For example, if you hold three funds in a nonretirement account titled in your own name, two funds in a nonretirement account titled jointly with your spouse, and one fund in an individual retirement account, you have six fund accounts--and this is true even if you hold the same fund in multiple accounts.

PURCHASING SHARES

Vanguard reserves the right, without prior notice, to increase or decrease the minimum amount required to open, convert shares to, or maintain a fund account, or to add to an existing fund account.

Investment minimums may differ for certain categories of investors.

ACCOUNT MINIMUMS
TO OPEN AND MAINTAIN AN ACCOUNT. $3,000.

TO ADD TO AN EXISTING ACCOUNT. $50 by Automatic Investment Plan; $100 by check, exchange, wire, or electronic bank transfer (other than Automatic Investment Plan).

HOW TO INITIATE A PURCHASE REQUEST
Be sure to check Exchanging Shares, Frequent-Trading Limits, and Other Rules You Should Know before placing your purchase request.

ONLINE. You may open certain types of accounts, request an electronic bank transfer, and make an exchange (using the proceeds from the redemption of shares from one Vanguard fund to simultaneously purchase shares of a different Vanguard fund) through our website at www.vanguard.com if you are a registered user.

BY TELEPHONE. You may call Vanguard to begin the account registration process or request that the account-opening forms be sent to you. You may also request a purchase of shares by wire, by electronic bank transfer, or by an exchange. See Contacting Vanguard.

BY MAIL. You may send your account registration form and check to open a new fund account at Vanguard. To add to an existing fund account, you may send your check with

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an Invest-by-Mail form (from your account statement) or with a deposit slip (available online). You may also send a written request to Vanguard to add to a fund account or to make an exchange. For a list of Vanguard addresses, see Contacting Vanguard.

How to Pay For a Purchase

BY ELECTRONIC BANK TRANSFER. You may purchase shares of a Vanguard fund through an electronic transfer of money held in a designated bank account. To establish the electronic bank transfer option on an account, you must designate a bank account online, complete a special form, or fill out the appropriate section of your account registration form. After the option is set up on your account, you can purchase shares by electronic bank transfer on a regular schedule (Automatic Investment Plan) or whenever you wish. Your purchase request can be initiated online, by telephone, or by mail.

BY WIRE. Wiring instructions vary for different types of purchases. Please call Vanguard for instructions and policies on purchasing shares by wire. See Contacting Vanguard.

BY CHECK. You may send a check to make initial or additional purchases to your fund account. Also see How to Initiate a Purchase Request: By mail. Make your check payable to Vanguard and include the appropriate fund number (e.g., Vanguard-623). See Contacting Vanguard.

BY EXCHANGE. You may purchase shares of a Vanguard fund using the proceeds from the simultaneous redemption of shares from another Vanguard fund. You may initiate an exchange online (if you are a registered user of Vanguard.com), by telephone, or by mail. See Exchanging Shares.

TRADE DATE

The trade date for any purchase request received in good order will depend on the day and time Vanguard receives your request, the manner in which you are paying, and the type of fund you are purchasing. Your purchase will be executed using the fund's NAV as calculated on the trade date. NAVs are calculated only on days the New York Stock Exchange (NYSE) is open for trading (a business day).

For purchases by CHECK into all funds other than money market funds, and for PURCHASES BY EXCHANGE or WIRE into all funds: If the purchase request is received by Vanguard on a business day before the close of regular trading on the NYSE (generally 4 p.m., Eastern time), the trade date will be the same day. If the purchase request is received on a business day after the close of regular trading on the NYSE, or on a nonbusiness day, the trade date will be the next business day.

For purchases by CHECK into money market funds: If the purchase request is received by Vanguard on a business day before the close of regular trading on the NYSE (generally 4 p.m., Eastern time), the trade date will be the next business day. If the purchase request is received on a business day after the close of regular trading on

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the NYSE, or on a nonbusiness day, the trade date will be the second business day following the day Vanguard receives the purchase request. Because money market instruments must be purchased with federal funds and it takes a money market mutual fund one business day to convert check proceeds into federal funds, the trade date will be one business day later than for other funds.

For purchases by electronic bank transfer using an AUTOMATIC INVESTMENT PLAN:
Your trade date generally will be one business day before the date you designated for withdrawal from your bank account.

For purchases by ELECTRONIC BANK TRANSFER not using an Automatic Investment Plan: If the purchase request is received by Vanguard on a business day before 10 p.m., Eastern time, the trade date will be the next business day. If the purchase request is received on a business day after 10 p.m., Eastern time, or on a nonbusiness day, the trade date will be the second busines day following the day Vanguard receives the request.

If your purchase request is not accurate and complete, it may be rejected. See Other Rules You Should Know--Good Order.

For further information about purchase transactions, consult our website at www.vanguard.com or see Contacting Vanguard

OTHER PURCHASE RULES YOU SHOULD KNOW

CHECK PURCHASES. All purchase checks must be written in U.S. dollars and must be drawn on a U.S. bank. Vanguard does not accept cash, traveler's checks, or money orders. In addition, Vanguard may refuse "starter checks" and checks that are not made payable to Vanguard.

NEW ACCOUNTS. We are required by law to obtain from you certain personal information that we will use to verify your identity. If you do not provide the information, we may not be able to open your account. If we are unable to verify your identity, Vanguard reserves the right, without prior notice, to close your account or take such other steps as we deem reasonable.

REFUSED OR REJECTED PURCHASE REQUESTS. Vanguard reserves the right to stop selling fund shares or to reject any purchase request at any time and without prior notice, including, but not limited to, purchases requested by exchange from another Vanguard fund. This also includes the right to reject any purchase request because of a history of frequent trading by the investor or because the purchase may negatively affect a fund's operation or performance.

LARGE PURCHASES. Please call Vanguard before attempting to invest a large dollar amount.

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NO CANCELLATIONS. Vanguard will not accept your request to cancel any purchase request once processing has begun. Please be careful when placing a purchase request.

CONVERTING SHARES

A conversion between share classes of the same fund is a nontaxable event.

PRICING OF SHARE CLASS CONVERSIONS
If you convert from Investor Shares to ETF Shares, the transaction will be based on the respective net asset values of the separate classes on the trade date for the conversion. For more information see Conversion Privilege under ETF Shares.

REDEEMING SHARES

HOW TO INITIATE A REDEMPTION REQUEST
Be sure to check Exchanging Shares, Frequent-Trading Limits, and Other Rules You Should Know before placing your redemption request.

ONLINE. You may redeem shares, request an electronic bank transfer, and make an exchange (the purchase of shares of one Vanguard fund using the proceeds of a simultaneous redemption from another Vanguard fund) through our website at www.vanguard.com if you are a registered user.

BY TELEPHONE. You may call Vanguard to request a redemption of shares by wire, by electronic bank transfer, by check, or by an exchange. See Contacting Vanguard.

BY MAIL. You may send a written request to Vanguard to redeem from a fund account or to make an exchange. See Contacting Vanguard.

HOW TO RECEIVE REDEMPTION PROCEEDS

BY ELECTRONIC BANK TRANSFER. You may have the proceeds of a fund redemption sent directly to a designated bank account. To establish the electronic bank transfer option, you must designate a bank account online, complete a special form, or fill out the appropriate section of your account registration form. After the option is set up on your account, you can redeem shares by electronic bank transfer on a regular schedule (Automatic Withdrawal Plan--$50 minimum) or whenever you wish ($100 minimum). Your transaction can be initiated online, by telephone, or by mail.

BY WIRE. When redeeming from a money market fund or a bond fund, you may instruct Vanguard to wire your redemption proceeds ($1,000 minimum) to a previously designated bank account. Wire redemptions generally are not available for Vanguard's balanced or stock funds. The wire redemption option is not automatic; you must designate a bank account online, complete a special form, or fill out the appropriate

21

section of your account registration form. Vanguard charges a $5 fee for wire redemptions under $5,000.

BY EXCHANGE. You may have the proceeds of a Vanguard fund redemption invested directly in shares of another Vanguard fund. You may initiate an exchange online (if you are a registered user of Vanguard.com), by telephone, or by mail.

BY CHECK. If you have not chosen another redemption method, Vanguard will mail you a redemption check, normally within two business days of your trade date.

TRADE DATE
The trade date for any redemption request received in good order will depend on the day and time Vanguard receives your request and the manner in which you are redeeming. Your redemption will be executed using the fund's NAV as calculated on the trade date. NAVs are calculated only on days that the NYSE is open for trading (a business day.)

For redemptions by CHECK, EXCHANGE, OR WIRE: If the redemption request is received by Vanguard on a business day before the close of regular trading on the NYSE (generally 4 p.m., Eastern time), the trade date will be the same day. If the redemption request is received on a business day after the close of regular trading on the NYSE, or on a nonbusiness day, the trade date will be the next business day.

. Note on timing of wire redemptions from money market funds: For telephone requests received by Vanguard on a business day before 10:45 a.m., Eastern time (2 p.m., Eastern time, for Vanguard Prime Money Market Fund), the redemption proceeds will leave Vanguard by the close of business the same day. For telephone requests received by Vanguard on a business day after those cut-off times, or on a nonbusiness day, and for all requests other than by telephone, the redemption proceeds will leave Vanguard by the close of business on the next business day.

. Note on timing of wire redemptions from bond funds: For requests received by Vanguard on a business day before the close of regular trading on the NYSE (generally 4 p.m., Eastern time), the redemption proceeds will leave Vanguard by the close of business on the next business day. For requests received by Vanguard on a business day after the close of regular trading on the NYSE, or on a nonbusiness day, the redemption proceeds will leave Vanguard by the close of business on the second business day after Vanguard receives the request.

For redemptions by electronic bank transfer using an AUTOMATIC WITHDRAWAL PLAN:
Your trade date generally will be the date you designated for withdrawal of funds (redemption of shares) from your Vanguard account. Proceeds of redeemed shares generally will be credited to your designated bank account two business days after

22

your trade date. If the date you designated for withdrawal falls on a weekend, holiday, or other nonbusiness day, your trade date will be the previous business day.

For redemptions by ELECTRONIC BANK TRANSFER not using an Automatic Withdrawal Plan: If the redemption request is received by Vanguard on a business day before the close of regular trading on the NYSE (generally 4 p.m., Eastern time), the trade date generally will be the same day. If the redemption request is received on a business day after the close of regular trading on the NYSE, or on a nonbusiness day, the trade date will be the next business day.

If your redemption request is not accurate and complete, it may be rejected. See Other Rules You Should Know--Good Order.

For further information about redemption transactions, consult our website at www.vanguard.com or see Contacting Vanguard.

OTHER REDEMPTION RULES YOU SHOULD KNOW

DOCUMENTATION FOR CERTAIN ACCOUNTS. Special documentation may be required to redeem from certain types of accounts, such as trust, corporate, nonprofit, or retirement accounts. Please call us before attempting to redeem from these types of accounts.

POTENTIALLY DISRUPTIVE REDEMPTIONS. Vanguard reserves the right to pay all or part of a redemption in kind--that is, in the form of securities--if we reasonably believe that a cash redemption would negatively affect the fund's operation or performance or that the shareholder may be engaged in market-timing or frequent trading. Under these circumstances, Vanguard also reserves the right to delay payment of the redemption proceeds for up to seven calendar days. By calling us before you attempt to redeem a large dollar amount, you may avoid in-kind or delayed payment of your redemption. Please see Frequent-Trading Limits for information about Vanguard's policies to limit frequent trading.

RECENTLY PURCHASED SHARES. Although you can redeem shares at any time, proceeds may not be made available to you until the fund collects payment for your purchase. This may take up to ten calendar days for shares purchased by check or by electronic bank transfer. If you have written a check on a fund with checkwriting privileges, that check may be rejected if your fund account does not have a sufficient available balance.

ADDRESS CHANGE. If you change your address online or by telephone, there may be a 15-day restriction on your ability to make online and telephone redemptions. You can request a redemption in writing at any time. Confirmations of address changes are sent to both the old and new addresses.

PAYMENT TO A DIFFERENT PERSON OR ADDRESS. At your request, we can make your redemption check payable to a different person or send it to a different address.

23

However, this requires the written consent of all registered account owners and may require a signature guarantee. You can obtain a signature guarantee from most commercial and savings banks, credit unions, trust companies, or member firms of a U.S. stock exchange. A notary public cannot provide a signature guarantee.

NO CANCELLATIONS. Vanguard will not accept your request to cancel any redemption request once processing has begun. Please be careful when placing a redemption request.

EMERGENCY CIRCUMSTANCES. Vanguard funds can postpone payment of redemption proceeds for up to seven calendar days. In addition, Vanguard funds can suspend redemptions and/or postpone payments of redemption proceeds beyond seven calendar days at times when the NYSE is closed or during emergency circumstances, as determined by the SEC.

EXCHANGING SHARES

An exchange occurs when you use the proceeds from the redemption of shares of one Vanguard fund to simultaneously purchase shares of a different Vanguard fund. You can make exchange requests online (if you are a registered user of Vanguard.com), by telephone, or by mail. See Purchasing Shares and Redeeming Shares.

If the NYSE is open for regular trading (a business day) at the time an exchange request is received in good order, the trade date will generally be the same day. See Other Rules You Should Know--Good Order for additional information on all transaction requests.

Please note that Vanguard reserves the right, without prior notice, to revise or terminate the exchange privilege, limit the amount of any exchange, or reject an exchange, at any time, for any reason.

FREQUENT-TRADING LIMITS

Because excessive transactions can disrupt management of a fund and increase the fund's costs for all shareholders, Vanguard places certain limits on frequent trading in the Vanguard funds. Each Vanguard fund (other than money market funds, short-term bond funds, and ETF Shares) limits an investor's purchases or exchanges into a fund account for 60 calendar days after the investor has redeemed or exchanged out of that fund account.

For Vanguard Retirement Investment Program pooled plans, the policy applies to exchanges made by participants online or by phone.

The policy does not apply to the following:

. Purchases of shares with reinvested dividend or capital gains distributions.

24

. Transactions through Vanguard's Automatic Investment Plan, Automatic Exchange Service, Direct Deposit Service, Automatic Withdrawal Plan, Required Minimum Distribution Service, and Vanguard Small Business Online/(R)/.

. Redemptions of shares to pay fund or account fees.

. Transaction requests submitted by mail to Vanguard from shareholders who hold their accounts directly with Vanguard. (Wire transactions and transaction requests submitted by fax are not mail transactions and are subject to the policy.)

. Transfers and re-registrations of shares within the same fund.

. Purchases of shares by asset transfer or direct rollover.

. Conversions of shares from one share class to another in the same fund.

. Checkwriting redemptions.

. Section 529 college savings plans.

. Certain approved institutional portfolios and asset allocation programs, as well as trades made by Vanguard funds that invest in other Vanguard funds. (Please note that shareholders of Vanguard's funds of funds are subject to the policy.)

For participants in employer-sponsored defined contribution plans that are not served by Vanguard Small Business Services, the frequent-trading policy does not apply to:

. Purchases of shares with participant payroll or employer contributions or loan repayments.

. Purchases of shares with reinvested dividend or capital gains distributions.

. Distributions, loans, and in-service withdrawals from a plan.

. Redemptions of shares as part of a plan termination or at the direction of the plan.

. Automated transactions executed during the first six months of a participant's enrollment in the Vanguard Managed Account Program.

. Redemptions of shares to pay fund or account fees.

. Share or asset transfers or rollovers.

. Re-registrations of shares.

. Conversions of shares from one share class to another in the same fund.

. Exchange requests submitted by mail to Vanguard. (Exchange requests submitted by fax or wire are not mail requests and remain subject to the policy.)

ACCOUNTS HELD BY INSTITUTIONS (OTHER THAN DEFINED CONTRIBUTION PLANS) Vanguard will systematically monitor for frequent trading in institutional clients' accounts. If we detect suspicious trading activity, we will investigate and take appropriate action, which may include applying to a client's accounts the 60-day

25

policy previously described, prohibiting a client's purchases of fund shares, and/or eliminating the client's exchange privilege.

ACCOUNTS HELD BY INTERMEDIARIES

When intermediaries establish accounts in Vanguard funds for their clients, we cannot always monitor the trading activity of the individual clients. However, we review trading activity at the omnibus level, and if we detect suspicious activity, we will investigate and take appropriate action. If necessary, Vanguard may prohibit additional purchases of fund shares by an intermediary or by certain of the intermediary's clients. Intermediaries may also monitor their clients' trading activities in the Vanguard funds.

For those Vanguard funds that charge purchase or redemption fees, intermediaries will be asked to assess purchase and redemption fees on shareholder and participant accounts and remit these fees to the funds. The application of purchase and redemption fees and frequent-trading policies may vary among intermediaries. There are no assurances that Vanguard will successfully identify all intermediaries or that intermediaries will properly assess purchase and redemption fees or administer frequent-trading policies. If you invest with Vanguard through an intermediary, please read that firm's materials carefully to learn of any other rules or fees that may apply.

OTHER RULES YOU SHOULD KNOW

PROSPECTUS AND SHAREHOLDER REPORT MAILINGS
Vanguard attempts to eliminate the unnecessary expense of duplicate mailings by sending just one prospectus and/or report when two or more shareholders have the same last name and address. You may request individual prospectuses and reports by contacting our Client Services Department in writing, by telephone, or by e-mail.

VANGUARD.COM
REGISTRATION. If you are a registered user of Vanguard.com, you can use your personal computer to review your account holdings; to buy, sell, or exchange shares of most Vanguard funds; and to perform most other transactions. You must register for this service online.

ELECTRONIC DELIVERY. Vanguard can deliver your account statements, transaction confirmations, and fund financial reports electronically. If you are a registered user of Vanguard.com, you can consent to the electronic delivery of these documents by logging on and changing your mailing preference under "My Profile." You can revoke your electronic consent at any time, and we will begin to send paper copies of these documents within 30 days of receiving your notice.

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TELEPHONE TRANSACTIONS
AUTOMATIC. When we set up your account, we'll automatically enable you to do business with us by telephone, unless you instruct us otherwise in writing.

TELE-ACCOUNT/(R)/. To conduct account transactions through Vanguard's automated telephone service, you must first obtain a Personal Identification Number (PIN). Call Tele-Account at 800-662-6273 to obtain a PIN, and allow seven days after requesting the PIN before using this service.

PROOF OF A CALLER'S AUTHORITY. We reserve the right to refuse a telephone request if the caller is unable to provide the requested information or if we reasonably believe that the caller is not an individual authorized to act on the account. Before we allow a caller to act on an account, we may request the following information:

. Authorization to act on the account (as the account owner or by legal documentation or other means).

. Account registration and address.

. Fund name and account number, if applicable.

. Other information relating to the caller, the account holder, or the account.

SUBJECT TO REVISION. For any or all shareholders, we reserve the right, at any time and without prior notice, to revise, suspend, or terminate the privilege to transact or communicate with Vanguard by telephone.

GOOD ORDER
We reserve the right to reject any transaction instructions that are not in "good order." Good order generally means that your instructions include:

. The fund name and account number.

. The amount of the transaction (stated in dollars, shares, or percentage).

Written instructions also must include:

. Signatures of all registered owners.

. Signature guarantees, if required for the type of transaction. (Call Vanguard for specific signature-guarantee requirements.)

. Any supporting documentation that may be required.

The requirements vary among types of accounts and transactions.

Vanguard reserves the right, without prior notice, to revise the requirements for good order.

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FUTURE TRADE-DATE REQUESTS

Vanguard does not accept requests to hold a purchase, conversion, redemption, or exchange transaction for a future date. All such requests will receive trade dates as previously described in Purchasing Shares, Converting Shares, and Redeeming Shares. Vanguard reserves the right to return future-dated purchase checks.

ACCOUNTS WITH MORE THAN ONE OWNER
If an account has more than one owner or authorized person, Vanguard will accept telephone or online instructions from any one owner or authorized person.

RESPONSIBILITY FOR FRAUD

Vanguard will not be responsible for any account losses because of fraud if we reasonably believe that the person transacting business on an account is authorized to do so. Please take precautions to protect yourself from fraud. Keep your account information private, and immediately review any account statements that we provide to you. It is important that you contact Vanguard immediately about any transactions you believe to be unauthorized.

UNCASHED CHECKS
Please cash your distribution or redemption checks promptly. Vanguard will not pay interest on uncashed checks.

UNUSUAL CIRCUMSTANCES
If you experience difficulty contacting Vanguard online, by telephone, or by Tele-Account, you can send us your transaction request by regular or express mail. See Contacting Vanguard for addresses.

INVESTING WITH VANGUARD THROUGH OTHER FIRMS

You may purchase or sell shares of most Vanguard funds through a financial intermediary, such as a bank, broker, or investment advisor. Please consult your financial intermediary to determine which, if any, shares are available through that firm and to learn about other rules that may apply.

Please see Frequent-Trading Limits--Accounts Held by Intermediaries for information about the assessment of redemption fees and monitoring of frequent trading for accounts held by intermediaries.

ACCOUNT SERVICE FEE
For most shareholders, Vanguard deducts a $20 account service fee from all fund accounts that have a balance below $10,000 for any reason, including market fluctuation. The account service fee applies to both retirement and nonretirement

28

fund accounts. The fee will be assessed on fund accounts in all Vanguard funds, regardless of a fund's minimum investment amount. The account service fee, which will be collected by redeeming fund shares in the amount of $20, will be deducted from a fund account only once per calendar year.

If you register on Vanguard.com and elect to receive electronic delivery of statements, reports, and other materials for all of your fund accounts, the account service fee for balances below $10,000 will not be charged, so long as that election remains in effect.

The account service fee also does not apply to the following:

. Money market sweep accounts held through Vanguard Brokerage Services/(R)/.

. Accounts held through intermediaries.

. Accounts held by Voyager, Voyager Select, and Flagship clients. Membership is based on total household assets held at Vanguard, with a minimum of $100,000 to qualify for Vanguard Voyager Services/TM/, $500,000 for Vanguard Voyager Select Services/TM/, and $1 million for Vanguard Flagship Services/TM/. Vanguard determines membership by aggregating assets of all eligible accounts held by the investor and immediate family members who reside at the same address. Aggregate assets include investments in Vanguard mutual funds, Vanguard ETFs/TM/, annuities through Vanguard, the Vanguard 529 Plan, certain small-business accounts, and employer-sponsored retirement plans for which Vanguard provides recordkeeping services.

. Participant accounts in employer-sponsored defined contribution plans (other than those served by the Vanguard Small Business Services Department, which are subject to various fee structures). Please consult your enrollment materials for the rules that apply to your account.

. Section 529 college savings plans.

LOW-BALANCE ACCOUNTS

The Fund reserves the right, without prior notice, to liquidate any investment-only retirement-plan fund account or any nonretirement fund account whose balance falls below the minimum initial investment for any reason, including market fluctuation. Shares redeemed in accordance with this policy will be subject to applicable redemption fees.

RIGHT TO CHANGE POLICIES

In addition to the rights expressly stated elsewhere in this prospectus, Vanguard reserves the right to (1) alter, add, or discontinue any conditions of purchase (including eligibility requirements), redemption, exchange, conversion, service, or privilege at any time without prior notice; (2) accept initial purchases by telephone; (3) freeze any account and/or suspend account services when Vanguard has received reasonable

29

notice of a dispute regarding the assets in an account, including notice of a dispute between the registered or beneficial account owners or when we reasonably believe a fraudulent transaction may occur or has occurred; (4) temporarily freeze any account and/or suspend account services upon initial notification to Vanguard of the death of the shareholder until Vanguard receives required documentation in good order; (5) alter, impose, discontinue, or waive any redemption fee, account service fee, or other fees charged to a group of shareholders; and (6) redeem an account, without the owner's permission to do so, in cases of threatening conduct or suspicious, fraudulent, or illegal activity. Changes may affect any or all investors. These actions will be taken when, at the sole discretion of Vanguard management, we reasonably believe they are deemed to be in the best interest of a fund.

SHARE CLASSES
Vanguard reserves the right, without prior notice, to change the eligibility requirements of its share classes, including the types of clients who are eligible to purchase each share class.

FUND AND ACCOUNT UPDATES

CONFIRMATION STATEMENTS

We will send (or provide online, whichever you prefer) a confirmation of your trade date and the amount of your transaction when you buy, sell, exchange, or convert shares. However, we will not send confirmations reflecting only checkwriting redemptions or the reinvestment of dividends or capital gains distributions. For any month in which you had a checkwriting redemption, a Checkwriting Activity Statement will be sent to you itemizing the checkwriting redemptions for that month. Promptly review each confirmation statement that we provide to you by mail or online. It is important that you contact Vanguard immediately with any questions you may have about any transaction reflected on a confirmation statement, or Vanguard will consider the transaction properly processed.

PORTFOLIO SUMMARIES

We will send (or provide online, whichever you prefer) quarterly portfolio summaries to help you keep track of your accounts throughout the year. Each summary shows the market value of your account at the close of the statement period, as well as all distributions, purchases, redemptions, exchanges, transfers, and conversions for the current calendar year. Promptly review each summary that we provide to you by mail or online. It is important that you contact Vanguard immediately with any questions you may have about any transaction reflected on the summary, or Vanguard will consider the transaction properly processed.

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TAX STATEMENTS
For most taxable accounts, we will send annual tax statements to assist you in preparing your income tax returns. These statements, which are generally mailed in January, will report the previous year's dividend and capital gains distributions, proceeds from the sale of shares, and distributions from IRAs and other retirement plans. These statements can be viewed online.

AVERAGE-COST REVIEW STATEMENTS

For most taxable accounts, average-cost review statements will accompany annual 1099B tax forms. These tax forms show the average cost of shares that you redeemed during the previous calendar year, using the average-cost single-category method, which is one of the methods established by the IRS.

ANNUAL AND SEMIANNUAL REPORTS
We will send (or provide online, whichever you prefer) financial reports about Vanguard High Dividend Yield Index Fund twice a year, in June and December. These comprehensive reports include overviews of the financial markets and provide the following specific Fund information:

. Performance assessments and comparisons with industry benchmarks.

. Financial statements with listings of Fund holdings.

PORTFOLIO HOLDINGS
We generally post on our website at www.vanguard.com, in the HOLDINGS section of the Fund's Profile page, a detailed list of the securities held by the Fund (under PORTFOLIO HOLDINGS), as of the most recent calendar-quarter-end. This list is generally updated within 30 days after the end of each calendar quarter. Vanguard may exclude any portion of these portfolio holdings from publication when deemed in the best interest of the Fund. We also generally post the ten largest stock portfolio holdings of the Fund and the percentage of the Fund's total assets that each of these holdings represents, as of the most recent calendar-quarter-end. This list is generally updated within 15 calendar days after the end of each calendar quarter. Please consult the Fund's Statement of Additional Information or our website for a description of the policies and procedures that govern disclosure of the Fund's portfolio holdings.

31

CONTACTING VANGUARD

WEB
---------------------------------------------------------------------------------------------------------------
Vanguard.com For the most complete source of Vanguard news
24 hours a day, 7 days a week For fund, account, and service information
 For most account transactions
 For literature requests
---------------------------------------------------------------------------------------------------------------

PHONE
---------------------------------------------------------------------------------------------------------------
Vanguard Tele-Account/(R)/ 800-662-6273 For automated fund and account information
(ON-BOARD) For exchange transactions (subject to limitations)
 Toll-free, 24 hours a day, 7 days a week
---------------------------------------------------------------------------------------------------------------
Investor Information 800-662-7447 (SHIP) For fund and service information
(Text telephone for people with hearing For literature requests
impairment at 800-952-3335) Business hours only: Monday-Friday, 8 a.m. to 10 p.m.,
 Eastern time; Saturday, 9 a.m. to 4 p.m., Eastern time
---------------------------------------------------------------------------------------------------------------
Client Services 800-662-2739 (CREW) For account information
(Text telephone for people with hearing For most account transactions
impairment at 800-749-7273) Business hours only: Monday-Friday, 8 a.m. to 10 p.m.,
 Eastern time; Saturday, 9 a.m. to 4 p.m., Eastern time
---------------------------------------------------------------------------------------------------------------
Institutional Division For information and services for large institutional investors
888-809-8102 Business hours only: Monday-Friday, 8:30 a.m. to 9 p.m.,
 Eastern time
---------------------------------------------------------------------------------------------------------------
Intermediary Sales Support For information and services for financial intermediaries
800-997-2798 including broker-dealers, trust institutions, insurance
 companies, and financial advisors
 Business hours only: Monday-Friday, 8:30 a.m. to 7 p.m.,
 Eastern time
---------------------------------------------------------------------------------------------------------------

32

VANGUARD ADDRESSES

Please be sure to use the correct address, depending on your method of delivery. Use of an incorrect address could delay the processing of your transaction.

REGULAR MAIL (INDIVIDUALS) The Vanguard Group
 P.O. Box 1110
 Valley Forge, PA 19482-1110
----------------------------------------------------------------------
REGULAR MAIL (INSTITUTIONS) The Vanguard Group
 P.O. Box 2900
 Valley Forge, PA 19482-2900
----------------------------------------------------------------------
REGISTERED, EXPRESS, OR OVERNIGHT The Vanguard Group
 455 Devon Park Drive
 Wayne, PA 19087-1815
----------------------------------------------------------------------

Fund Number
Please use the specific fund number when contacting us:

Investor Shares

Vanguard High Dividend Yield Index Fund 623

Vanguard, Vanguard.com, Connect with Vanguard, Plain Talk, Vanguard Tele-Account, Tele-Account, Vanguard ETF, Vanguard ETFs, Vanguard Small Business Online, Vanguard Brokerage Services, Vanguard Voyager Services, Voyager, Vanguard Voyager Select Services, Voyager Select, Vanguard Flagship Services, Flagship, and the ship logo are trademarks of The Vanguard Group, Inc. Vanguard High Dividend Yield Index Fund and FTSE High Dividend Yield Index are not in any way sponsored, endorsed, sold, or promoted by FTSE International Limited ("FTSE") or by the London Stock Exchange Plc ("Exchange") or by The Financial Times Limited ("FT"), and neither FTSE nor Exchange nor FT makes any warranty or representation whatsoever, expressly or impliedly, either as to the results to be obtained from the use of the FTSE High Dividend Yield Index ("Index") and/or the figure at which the said Index stands at any particular time on any particular day or otherwise. The Index is compiled and calculated by FTSE. However, neither FTSE nor Exchange nor FT shall be liable (whether in negligence or otherwise) to any person for any error in the Index, and neither FTSE nor Exchange nor FT shall be under any obligation to advise any person of any error therein.

"FTSE(R)" is a trademark jointly owned by the London Stock Exchange Plc and The Financial Times Limited and is used by FTSE International Limited under license. The FTSE High Dividend Yield Index is calculated by FTSE International Limited. FTSE International Limited does not sponsor, endorse, or promote the Fund; is not in any way connected to it; and does not accept any liability in relation to its issue, operation, and trading. All other marks are the exclusive property of their respective owners.

33

ETF SHARES

In addition to Investor Shares, certain Vanguard funds offer a class of shares, known as Vanguard ETF* Shares, that are listed for trading on a national securities exchange. Many of these funds, including this one, permit holders of conventional fund shares to convert those shares into ETF Shares of the same fund.

Note: Vanguard reserves the right to modify or terminate the conversion privilege in the future.

Although ETF Shares represent an investment in the same portfolio of securities as Investor Shares, they have different characteristics and may appeal to a different group of investors. It is important that you understand the differences before deciding whether to convert your shares to ETF Shares.

The following material summarizes key information about ETF Shares. A separate prospectus with more complete information about ETF Shares is also available. Investors should review that prospectus before deciding whether to convert.

DIFFERENCES BETWEEN ETF SHARES AND CONVENTIONAL MUTUAL FUND SHARES Investor Shares are "conventional" mutual fund shares; that is, they can be purchased from and redeemed with the issuing fund for cash at a net asset value (NAV) calculated once a day. ETF Shares, by contrast, cannot be purchased from or redeemed with the issuing fund, except as noted.

An organized trading market is expected to exist for ETF Shares, unlike conventional mutual fund shares, because ETF Shares are listed for trading on a national securities exchange. Investors can purchase and sell ETF Shares on the secondary market through a broker. Secondary-market transactions occur not at NAV, but at market prices that change throughout the day based on the supply of, and demand for, ETF Shares and on changes in the prices of the fund's portfolio holdings.

The market price of a fund's ETF Shares will differ somewhat from the NAV of those shares. The difference between market price and NAV is expected to be small most of the time, but in times of extreme market volatility the difference may become significant.

BUYING AND SELLING ETF SHARES
Vanguard ETF Shares must be held in a brokerage account. Therefore, before acquiring ETF Shares, whether through a conversion or an open-market purchase, you must have an account with a broker.

*U.S. Pat. No. 6,879,964 B2.

34

You buy and sell ETF Shares in the same way you buy and sell any other exchange-traded security--on the open market, through a broker. In most cases, the broker will charge you a commission to execute the transaction. Unless imposed by your broker, there is no minimum dollar amount you must invest and no minimum number of ETF Shares you must purchase. Because open-market transactions occur at market prices, you may pay more than NAV when you buy ETF Shares and receive less than NAV when you sell those shares.

Many of the Vanguard funds that issue ETF Shares, including this one, permit holders of conventional fund shares to convert those shares into ETF Shares of equivalent value--but you cannot convert ETF Shares into conventional shares. See "Conversion Privilege" for a discussion of the conversion process.

There is one other way to buy and sell ETF Shares. Investors can purchase and redeem ETF Shares directly from the issuing fund at NAV if they do so (1) through certain authorized broker-dealers, (2) in large blocks known as Creation Units, and (3) in exchange for baskets of securities rather than cash. However, because Creation Units are worth millions of dollars, and because most investors prefer to transact in cash rather than with securities, it is expected that only a limited number of institutional investors will purchase and redeem ETF Shares this way.

RISKS
ETF Shares issued by a fund are subject to the same risks as conventional shares of the same fund. ETF Shares also are subject to the following risks:

. The market price of a fund's ETF Shares will vary somewhat from the NAV of those shares. Therefore, you may pay more than NAV when buying ETF Shares and you may receive less than NAV when selling them.

. ETF Shares cannot be redeemed with the Fund, except in Creation Unit aggregations. Therefore, if you no longer wish to own ETF Shares, you must sell them on the open market. Although ETF Shares will be listed for trading on a national securities exchange, it is possible that an active trading market may not be maintained.

. Trading of a fund's ETF Shares on the listing exchange may be halted if exchange officials deem such action appropriate, if the shares are delisted from the listing exchange, or if the activation of marketwide "circuit breakers" (which are tied to large decreases in stock prices) halts stock trading generally.

35

FEES AND EXPENSES
When you buy and sell ETF Shares through a brokerage firm, you will pay whatever commissions the firm charges. You also will incur the cost of the "bid-asked spread," which is the difference between the price a dealer will pay for a security and the somewhat higher price at which the dealer will sell the same security. If you convert from conventional shares to ETF Shares, you will not pay a brokerage commission or a bid-asked spread. However, Vanguard charges $50 for each conversion transaction, and your broker may impose its own conversion fees as well.

The total annual operating expenses (the expense ratio) for the Fund's ETF Shares as of October 31, 2007, were 0.25%.

ACCOUNT SERVICES
Because you hold ETF Shares through a brokerage account, Vanguard will have no record of your ownership unless you hold the shares through Vanguard Brokerage Services/(R)/ (Vanguard Brokerage). Your broker will service your account. For example, the broker will provide account statements, confirmations of your purchases and sales of ETF Shares, and year-end tax information. The broker also will be responsible for ensuring that you receive shareholder reports and other communications from the fund whose ETF Shares you own. You will receive certain services (e.g., dividend reinvestment and average-cost information) only if your broker offers those services.

CONVERSION PRIVILEGE

Owners of conventional shares issued by the Fund may convert those shares into ETF Shares of equivalent value. Please note that investors who own conventional shares through a 401(k) plan or other employer-sponsored retirement or benefit plan may not convert those shares into ETF Shares. Vanguard imposes a $50 charge on conversion transactions and reserves the right, in the future, to raise or lower the fee and to limit or terminate the conversion privilege. Your broker may charge an additional fee to process a conversion. ETF Shares, whether acquired through a conversion or purchased on the open market, cannot be converted into conventional shares of the same fund. Similarly, ETF Shares of one fund cannot be exchanged for ETF Shares of another fund.

Unless you are an Authorized Participant, you must hold ETF Shares in a brokerage account. Thus, before converting conventional shares into ETF Shares, you must have an existing, or open a new, brokerage account. To initiate a conversion of conventional shares into ETF Shares, please contact your broker.

Please note that upon converting your conventional mutual fund shares to ETF Shares, you will need to select a cost-basis method of accounting for your ETF Shares.

36

Options for your cost-basis method will depend on your historical transaction activity in the conventional shares. Prior to conversion, please consult your tax advisor to identify your options and select a method. You should also contact your broker to ensure that the method you choose is offered by your particular brokerage firm.

Converting conventional shares into ETF Shares generally is accomplished as follows. First, after your broker notifies Vanguard of your request to convert, Vanguard will transfer your conventional shares from your account to the broker's omnibus account with Vanguard (an account maintained by the broker on behalf of all its customers who hold conventional Vanguard fund shares through the broker). After the transfer, Vanguard's records will reflect your broker, not you, as the owner of the shares. Next, your broker will instruct Vanguard to convert the appropriate number or dollar amount of conventional shares in its omnibus account into ETF Shares of equivalent value, based on the respective net asset values of the two share classes.

Your Fund's transfer agent will reflect ownership of all ETF Shares in the name of the Depository Trust Company (DTC). DTC will keep track of which ETF Shares belong to your broker, and your broker, in turn, will keep track of which ETF Shares belong to you.

Because the DTC is unable to handle fractional shares, only whole shares will be converted. For example, if you owned 300.250 conventional shares, and this was equivalent in value to 90.750 ETF Shares, the DTC account would receive 90 ETF Shares. Conventional shares worth 0.750 ETF Shares (in this example, that would be 2.481 conventional shares) would remain in the broker's omnibus account with Vanguard. Your broker then could either (1) credit your account with 0.750 ETF Shares rather than 2.481 conventional shares, or (2) redeem the 2.481 conventional shares at net asset value, in which case you would receive cash in place of those shares. If your broker chooses to redeem your conventional shares, you will realize a gain or loss on the redemption that must be reported on your tax return (unless you hold the shares in an IRA or other tax-deferred account). Please consult your broker for information on how it will handle the conversion process, including whether it will impose a fee to process a conversion.

If you convert your conventional shares to ETF Shares through Vanguard Brokerage, all conventional shares for which you request conversion will be converted into ETF Shares of equivalent value. Because no fractional shares will have to be sold, the transaction will be 100% tax-free. Vanguard Brokerage does not impose a conversion fee over and above the fee imposed by Vanguard.

Here are some important points to keep in mind when converting conventional shares of a Vanguard fund into ETF Shares:

. The conversion transaction is nontaxable except, as applicable, to the limited extent as previously described.

37

. The conversion process can take anywhere from several days to several weeks, depending on your broker. Vanguard generally will process conversion requests either on the day they are received or on the next business day. Vanguard imposes conversion blackout windows around the dates when a fund with ETF Shares declares dividends. This is necessary to prevent a shareholder from collecting a dividend from both the conventional share class currently held and also from the ETF share class into which the shares will be converted.

. Until the conversion process is complete, you will remain fully invested in a fund's conventional shares, and your investment will increase or decrease in value in tandem with the net asset value of those shares.

. During the conversion process, you will be able to liquidate all or part of your investment by instructing Vanguard or your broker (depending on who maintains records of your share ownership) to redeem your conventional shares. After the conversion process is complete, you will be able to liquidate all or part of your investment by instructing your broker to sell your ETF Shares.

38

GLOSSARY OF INVESTMENT TERMS

ACTIVE MANAGEMENT. An investment approach that seeks to exceed the average returns of the financial markets. Active managers rely on research, market forecasts, and their own judgment and experience in selecting securities to buy and sell.

CAPITAL GAINS DISTRIBUTION. Payment to mutual fund shareholders of gains realized on securities that a fund has sold at a profit, minus any realized losses.

CASH INVESTMENTS. Cash deposits, short-term bank deposits, and money market instruments that include U.S. Treasury bills and notes, bank certificates of deposit (CDs), repurchase agreements, commercial paper, and banker's acceptances.

CIRCUIT BREAKER. A rule that requires a halt in trading in the U.S. stock markets for a specific period of time when the Dow Jones Industrial Average declines by a specified percentage during the course of a trading day.

COMMON STOCK. A security representing ownership rights in a corporation. A stockholder is entitled to share in the company's profits, some of which may be paid out as dividends.

CREATION UNIT. A large block of a specified number of ETF Shares. Authorized Participants may purchase and redeem ETF Shares from the fund only in Creation Unit-size aggregations.

DIVIDEND DISTRIBUTION. Payment to mutual fund shareholders of income from interest or dividends generated by a fund's investments.

ETF SHARES. A class of exchange-traded shares issued by certain Vanguard mutual funds. ETF Shares can be bought and sold continuously throughout the day at market prices.

EXPENSE RATIO. The percentage of a fund's average net assets used to pay its expenses during a fiscal year. The expense ratio includes management expenses--such as advisory fees, account maintenance, reporting, accounting, legal, and other administrative expenses--and any 12b-1 distribution fees. It does not include the transaction costs of buying and selling portfolio securities.

INCEPTION DATE. The date on which the assets of a fund (or one of its share classes) are first invested in accordance with the fund's investment objective. For funds with a subscription period, the inception date is the day after that period ends. Investment performance is measured from the inception date.

INDEX. An unmanaged group of securities whose overall performance is used as a standard to measure the investment performance of a particular market.

INVESTMENT ADVISOR. An organization that is responsible for making the day-to-day decisions regarding a fund's investments.

39

MEDIAN MARKET CAP. An indicator of the size of companies in which a fund invests; the midpoint of market capitalization (market price x shares outstanding) of a fund's stocks, weighted by the proportion of the fund's assets invested in each stock. Stocks representing half of the fund's assets have market capitalizations above the median, and the rest are below it.

NET ASSET VALUE (NAV). The market value of a mutual fund's total assets, minus liabilities, divided by the number of shares outstanding. The value of a single share is also called its share value or share price.

PASSIVE MANAGEMENT. A low-cost investment strategy in which a mutual fund attempts to track--rather than outperform--a specified market benchmark or "index"; also known as indexing.

TOTAL RETURN. A percentage change, over a specified time period, in a mutual fund's net asset value, assuming the reinvestment of all distributions of dividends and capital gains.

VOLATILITY. The fluctuations in value of a mutual fund or other security. The greater a fund's volatility, the wider the fluctuations in its returns.

YIELD. Income (interest or dividends) earned by an investment, expressed as a percentage of the investment's price.

40

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[SHIP LOGO][VANGUARD/(R)/ LOGO]

P.O. Box 2600
Valley Forge, PA 19482-2600

CONNECT WITH VANGUARD/(R)/ > www.vanguard.com

FOR MORE INFORMATION
If you would like more information about Vanguard High Dividend Yield Index Fund, the following documents are available free upon request:

ANNUAL/SEMIANNUAL REPORTS TO SHAREHOLDERS
Additional information about the Fund's investments is available in the Fund's annual and semiannual reports to shareholders. In the annual report, you will find a discussion of the market conditions and investment strategies that significantly affected the Fund's performance during its last fiscal year.

STATEMENT OF ADDITIONAL INFORMATION (SAI)
The SAI provides more detailed information about the Fund.

The current annual and semiannual reports and the SAI are incorporated by reference into (and are thus legally a part of) this prospectus.

To receive a free copy of the latest annual or semiannual report or the SAI, or to request additional information about the Fund or other Vanguard funds, please visit www.vanguard.com or contact us as follows:

The Vanguard Group
Investor Information Department
P.O. Box 2600
Valley Forge, PA 19482-2600
Telephone: 800-662-7447 (SHIP)
Text telephone for people with hearing impairment: 800-952-3335

If you are a current Vanguard shareholder and would like information about your account, account transactions, and/or account statements, please call:

Client Services Department
Telephone: 800-662-2739 (CREW)
Text telephone for people with hearing impairment: 800-749-7273

INFORMATION PROVIDED BY THE SECURITIES AND EXCHANGE COMMISSION (SEC) You can review and copy information about the Fund (including the SAI) at the SEC's Public Reference Room in Washington, DC. To find out more about this public service, call the SEC at 202-551-8090. Reports and other information about the Fund are also available in the EDGAR database on the SEC's Internet site at www.sec.gov, or you can receive copies of this information, for a fee, by electronic request at the following e-mail address: publicinfo@sec.gov, or by writing the Public Reference Section, Securities and Exchange Commission, Washington, DC 20549-0102.

Fund's Investment Company Act file number:
811-07443

(C) 2008 The Vanguard Group, Inc. All rights reserved. Vanguard Marketing Corporation, Distributor.

P623 022008


VANGUARD/(R)/ HIGH DIVIDEND YIELD
INDEX FUND

> PROSPECTUS

INVESTOR SHARES FOR PARTICIPANTS

February 22, 2008


[SHIP LOGO][VANGUARD/(R)/ LOGO]


This prospectus contains financial data for the Fund through the fiscal year ended October 31, 2007.

NEITHER THE SECURITIES AND EXCHANGE COMMISSION NOR ANY STATE SECURITIES COMMISSION HAS APPROVED OR DISAPPROVED OF THESE SECURITIES OR PASSED UPON THE ACCURACY OR ADEQUACY OF THIS PROSPECTUS. ANY REPRESENTATION TO THE CONTRARY IS A CRIMINAL OFFENSE.


CONTENTS

-------------------------------------------------------------------------------
Fund Profile 1 Financial Highlights 14
-------------------------------------------------------------------------------
Investing in Index Funds 5 Investing With Vanguard 16
-------------------------------------------------------------------------------
More on the Fund 6 Accessing Fund Information by Computer 19
-------------------------------------------------------------------------------
 The Fund and Vanguard 10 Glossary of Investment Terms 20
-------------------------------------------------------------------------------
 Investment Advisor 11
-------------------------------------------------------------------------------
 Dividends, Capital 12
 Gains, and Taxes
-------------------------------------------------------------------------------
 Share Price 12
-------------------------------------------------------------------------------

WHY READING THIS PROSPECTUS IS IMPORTANT
This prospectus explains the investment objective, policies, strategies, and risks associated with the Fund. To highlight terms and concepts important to mutual fund investors, we have provided Plain Talk/(R)/ explanations along the way. Reading the prospectus will help you decide whether the Fund is the right investment for you. We suggest that you keep this prospectus for future reference.

This prospectus is intended for participants in employer-sponsored retirement or savings plans. Another version--for investors who would like to open a personal investment account--can be obtained by calling Vanguard at 800-662-7447.


FUND PROFILE

INVESTMENT OBJECTIVE

The Fund seeks to track the performance of a benchmark index that measures the investment return of common stocks of companies that are characterized by high dividend yields.

PRIMARY INVESTMENT STRATEGIES

The Fund employs a "passive management"--or indexing--investment approach designed to track the performance of the FTSE/(R)/ High Dividend Yield Index, which consists of common stocks of companies that pay dividends that generally are higher than average. The Fund attempts to replicate the target index by investing all, or substantially all, of its assets in the stocks that make up the Index, holding each stock in approximately the same proportion as its weighting in the Index.

PRIMARY RISKS
An investment in the Fund could lose money over short or even long periods. You should expect the Fund's share price and total return to fluctuate within a wide range, like the fluctuations of the overall stock market. The Fund's performance could be hurt by:

. Stock market risk, which is the chance that stock prices overall will decline. Stock markets tend to move in cycles, with periods of rising prices and periods of falling prices.

. Investment style risk, which is the chance that returns from high dividend-paying stocks will trail returns from the overall stock market. Specific types of stocks tend to go through cycles of doing better--or worse--than the stock market in general. These periods have, in the past, lasted for as long as several years.

PERFORMANCE/RISK INFORMATION

The following bar chart and table are intended to help you understand the risks of investing in the Fund. The bar chart shows the performance of the Investor Shares in its first full calendar year. The table shows how the average annual total returns compare with those of the the Fund's target index. Keep in mind that the Fund's past performance does not indicate how the Fund will perform in the future.

1

ANNUAL TOTAL RETURN--INVESTOR SHARES

BAR CHART
[-20% to 20%]

2007 1.54%

During the period shown in the bar chart, the highest return for a calendar quarter was 5.09% (quarter ended June 30, 2007), and the lowest return for a quarter was -5.20% (quarter ended December 31, 2007).

AVERAGE ANNUAL TOTAL RETURNS FOR PERIODS ENDED DECEMBER 31, 2007

 Since
 1 Year Inception/1/
-------------------------------------------------------------------------------
VANGUARD HIGH DIVIDEND YIELD INDEX
FUND INVESTOR SHARES 1.54% 3.89%
-------------------------------------------------------------------------------
FTSE HIGH DIVIDEND YIELD INDEX
(reflects no deduction for fees,
expenses, or taxes) 1.81% 4.15%
-------------------------------------------------------------------------------

1 Since-inception returns are from November 16, 2006--the inception date of the Investor Shares--through December 31, 2007.

FEES AND EXPENSES

The following table describes the fees and expenses you may pay if you buy and hold Investor Shares of the Fund. As is the case with all mutual funds, transaction costs incurred by the Fund for buying and selling securities are not reflected in the table. However, these costs are reflected in the investment performance figures included in this prospectus. The expenses shown under Annual Fund Operating Expenses are based on those incurred in the fiscal year ended October 31, 2007.

2

SHAREHOLDER FEES
(Fees paid directly from your investment)

-------------------------------------------------------------------------
Sales Charge (Load) Imposed on Purchases None
-------------------------------------------------------------------------
Purchase Fee None
-------------------------------------------------------------------------
Sales Charge (Load) Imposed on Reinvested Dividends None
-------------------------------------------------------------------------
Redemption Fee None
-------------------------------------------------------------------------

ANNUAL FUND OPERATING EXPENSES
(Expenses deducted from the Fund's assets)

-------------------------------------------------------------------------
Management Expenses 0.27%
-------------------------------------------------------------------------
12b-1 Distribution Fee None
-------------------------------------------------------------------------
Other Expenses 0.13%
-------------------------------------------------------------------------
Total Annual Fund Operating Expenses 0.40%
-------------------------------------------------------------------------

The following example is intended to help you compare the cost of investing in the Fund's Investor Shares with the cost of investing in other mutual funds. It illustrates the hypothetical expenses that you would incur over various periods if you invest $10,000 in the Fund's shares. This example assumes that the Shares provide a return of 5% a year and that operating expenses remain the same. The results apply whether or not you redeem your investment at the end of the given period.

1 Year 3 Years 5 Years 10 Years
------------------------------------------------------------------------------
$41 $128 $224 $505
------------------------------------------------------------------------------

THIS EXAMPLE SHOULD NOT BE CONSIDERED TO REPRESENT ACTUAL EXPENSES OR PERFORMANCE FROM THE PAST OR FOR THE FUTURE. ACTUAL FUTURE EXPENSES MAY BE HIGHER OR LOWER THAN THOSE SHOWN.

3


PLAIN TALK ABOUT FUND EXPENSES

All mutual funds have operating expenses. These expenses, which are deducted from a fund's gross income, are expressed as a percentage of the net assets of the fund. Vanguard High Dividend Yield Index Fund Investor Shares' expense ratio in fiscal year 2007 was 0.40%, or $4.00 per $1,000 of average net assets. The average large-cap value fund had expenses in 2006 of 1.35%, or $13.50 per $1,000 of average net assets (derived from data provided by Lipper Inc., which reports on the mutual fund industry). Management expenses, which are one part of operating expenses, include investment advisory fees as well as other costs of managing a fund--such as account maintenance, reporting, accounting, legal, and other administrative expenses.


PLAIN TALK ABOUT COSTS OF INVESTING

Costs are an important consideration in choosing a mutual fund. That's because you, as a shareholder, pay the costs of operating a fund, plus any transaction costs incurred when the fund buys or sells securities. These costs can erode a substantial portion of the gross income or the capital appreciation a fund achieves. Even seemingly small differences in expenses can, over time, have a dramatic effect on a fund's performance.

ADDITIONAL INFORMATION

As of October 31, 2007
--------------------------------------------------------------------------------
Net Assets (all share classes) $181 million
--------------------------------------------------------------------------------
Investment Advisor The Vanguard Group, Inc., Valley Forge Pa.,
 since inception
--------------------------------------------------------------------------------
Dividends and Capital Gains Dividends are distributed quarterly in March,
 June, September, and December; capital gains, if
 any, are distributed in December.
--------------------------------------------------------------------------------
Inception Date November 16, 2006
--------------------------------------------------------------------------------
Newspaper Abbreviation HiDvdYld
--------------------------------------------------------------------------------
Vanguard Fund Number 623
--------------------------------------------------------------------------------
CUSIP Number 921946505
--------------------------------------------------------------------------------
Ticker Symbol VHDYX
--------------------------------------------------------------------------------

4

INVESTING IN INDEX FUNDS

WHAT IS INDEXING?
Indexing is an investment strategy for tracking the performance of a specified market benchmark, or "index." An index is an unmanaged group of securities whose overall performance is used as a standard to measure the investment performance of a particular market. There are many types of indexes. Some represent entire markets--such as the U.S. stock market or the U.S. bond market. Other indexes cover market segments--such as small-capitalization stocks or short-term bonds.

An index fund holds all, or a representative sample, of the securities that make up its target index. Index funds attempt to mirror what the target index does, for better or worse. However, an index fund does not always perform exactly like its target index. For example, like all mutual funds, index funds have operating expenses and transaction costs. Market indexes do not, and therefore will usually have a slight performance advantage over funds that track them.

Index funds typically have the following characteristics:

. Variety of investments. Most Vanguard index funds generally invest in the securities of a wide variety of companies and industries.

. Relative performance consistency. Because they seek to track market benchmarks, index funds usually do not perform dramatically better or worse than their benchmarks.

. Low cost. Index funds are inexpensive to run, compared with actively managed funds. They have low or no research costs and typically keep trading activity--and thus brokerage commissions and other transaction costs--to a minimum.

5

MORE ON THE FUND

This prospectus describes the primary risks you would face as a Fund shareholder. It is important to keep in mind one of the main axioms of investing: The higher the risk of losing money, the higher the potential reward. The reverse, also, is generally true: The lower the risk, the lower the potential reward. As you consider an investment in any mutual fund, you should take into account your personal tolerance for fluctuations in the securities markets. Look for this FLAG LOGO symbol throughout the prospectus. It is used to mark detailed information about the more significant risks that you would confront as a Fund shareholder.

The following sections explain the primary investment strategies and policies that the Fund uses in pursuit of its objective. The Fund's board of trustees, which oversees the Fund's management, may change investment strategies or policies in the interest of shareholders without a shareholder vote, unless those strategies or policies are designated as fundamental. Note that the Fund's investment objective is not fundamental and may be changed without a shareholder vote. Under normal circumstances, the Fund will invest at least 80% of its assets in the stocks that make up its target index. The Fund may change its 80% policy only upon 60 days' notice to shareholders.

MARKET EXPOSURE
The Fund invests mainly in common stocks of companies that are characterized by high dividend yields relative to the overall market's yield. Stocks purchased by the Fund are expected to pay high dividends and may also have the potential for long-term capital appreciation.

FLAG LOGO
THE FUND IS SUBJECT TO STOCK MARKET RISK, WHICH IS THE CHANCE THAT STOCK PRICES OVERALL WILL DECLINE. STOCK MARKETS TEND TO MOVE IN CYCLES, WITH PERIODS OF RISING PRICES AND PERIODS OF FALLING PRICES.

To illustrate the volatility of stock prices, the following table shows the best, worst, and average annual total returns for the U.S. stock market over various periods as measured by the Standard & Poor's 500 Index, a widely used barometer of market activity. (Total returns consist of dividend income plus change in market price.) Note that the returns shown do not include the costs of buying and selling stocks or other expenses that a real-world investment portfolio would incur.

6

U.S. STOCK MARKET RETURNS
(1926-2007)

 1 Year 5 Years 10 Years 20 Years
-----------------------------------------------------------------------------
Best 54.2% 28.6% 19.9% 17.8%
-----------------------------------------------------------------------------
Worst -43.1 -12.4 -0.8 3.1
-----------------------------------------------------------------------------
Average 12.2 10.4 11.1 11.4
-----------------------------------------------------------------------------

The table covers all of the 1-, 5-, 10-, and 20-year periods from 1926 through 2007. You can see, for example, that although the average return on common stocks for all of the 5-year periods was 10.4%, average returns for individual 5-year periods ranged from -12.4% (from 1928 through 1932) to 28.6% (from 1995 through 1999). These average returns reflect past performance of common stocks; you should not regard them as an indication of future performance of either the stock market as a whole or the Fund in particular.

Stocks of publicly traded companies and funds that invest in stocks are often classified according to market value, or market capitalization. These classifications typically include small-cap, mid-cap, and large-cap. It's important to understand that, for both companies and stock funds, market-capitalization ranges change over time. Also, interpretations of size vary, and there are no "official" definitions of small-, mid-, and large-cap, even among Vanguard fund advisors. The asset-weighted median market capitalization of the Fund as of October 31, 2007, was $115.6 billion.

FLAG LOGO
THE FUND IS SUBJECT TO INVESTMENT STYLE RISK, WHICH IS THE CHANCE THAT RETURNS FROM HIGH DIVIDEND-PAYING STOCKS WILL TRAIL RETURNS FROM THE OVERALL STOCK MARKET. SPECIFIC TYPES OF STOCKS TEND TO GO THROUGH CYCLES OF DOING BETTER--OR WORSE--THAN THE STOCK MARKET IN GENERAL. THESE PERIODS HAVE, IN THE PAST, LASTED FOR AS LONG AS SEVERAL YEARS.

SECURITY SELECTION

The Fund attempts to track the investment performance of the FTSE High Dividend Yield Index, which consists of companies whose common stocks are characterized by high dividend yields relative to the market. The FTSE High Dividend Yield Index is maintained by FTSE Group (FTSE), a widely known global index provider that currently calculates more than 100,000 indexes.

The Fund uses the replication method of indexing. This means that the Fund holds each security found in the FTSE High Dividend Yield Index in approximately the same proportion as represented in the Index itself. For example, if 5% of the Index were made up of the stock of a specific company, the Fund would invest about 5% of its assets in that company.

7

OTHER INVESTMENT POLICIES AND RISKS

The Fund reserves the right to substitute a different index for the index it currently tracks if the current index is discontinued, if the Fund's agreement with the sponsor of its target index is terminated, or for any other reason determined in good faith by the Fund's board of trustees. In any such instance, the substitute index would measure the same market segment as the current index.

The Fund may invest in foreign securities to the extent necessary to carry out its investment strategy of holding all, or substantially all, of the stocks that make up the index it tracks. It is not expected that the Fund will invest more than 5% of its assets in foreign securities.

To track its target index as closely as possible, the Fund attempts to remain fully invested in stocks. To help stay fully invested and to reduce transaction costs, the Fund may invest, to a limited extent, in derivatives. Generally speaking, a derivative is a financial contract whose value is based on the value of a financial asset (such as a stock, bond, or currency), a physical asset (such as gold), or a market index (such as the S&P 500 Index). The Fund will not use derivatives for speculation or for the purpose of leveraging (magnifying) investment returns.

CASH MANAGEMENT

The Fund's daily cash balance may be invested in one or more Vanguard CMT Funds, which are very low-cost money market funds. When investing in a Vanguard CMT Fund, the Fund bears its proportionate share of the at-cost expenses of the CMT Fund in which it invests.

TEMPORARY INVESTMENT MEASURES
The Fund may temporarily depart from its normal investment policies and strategies when doing so is believed to be in the Fund's best interest, so long as the alternative is consistent with the Fund's investment objective. For instance, the Fund may invest beyond the normal limits in derivatives or ETFs that are consistent with the Fund's objective when those instruments are more favorably priced or provide needed liquidity, as might be the case when the Fund receives large cash flows that it cannot prudently invest immediately.

FREQUENT TRADING OR MARKET-TIMING
BACKGROUND. Some investors try to profit from strategies involving frequent trading of mutual fund shares, such as market-timing. For funds holding foreign securities, investors may try to take advantage of an anticipated difference between the price of the fund's shares and price movements in overseas markets, a practice also known as time-zone arbitrage. Investors also may try to engage in frequent trading of funds holding investments such as small-cap stocks and high-yield bonds. As money is

8

shifted into and out of a fund by a shareholder engaging in frequent trading, a fund incurs costs for buying and selling securities, resulting in increased brokerage and administrative costs. These costs are borne by all fund shareholders, including the long-term investors who do not generate the costs. In addition, frequent trading may interfere with an advisor's ability to efficiently manage the fund.

POLICIES TO ADDRESS FREQUENT TRADING. The Vanguard funds (other than money market funds, short-term bond funds, and Vanguard ETF(TM) Shares) do not knowingly accommodate frequent trading. The board of trustees of each Vanguard fund has adopted policies and procedures reasonably designed to detect and discourage frequent trading and, in some cases, to compensate the fund for the costs associated with it. Although there is no assurance that Vanguard will be able to detect or prevent frequent trading or market-timing in all circumstances, the following policies have been adopted to address these issues:

. Each Vanguard fund reserves the right to reject any purchase request--including exchanges from other Vanguard funds--without notice and regardless of size. For example, a purchase request could be rejected if Vanguard determines that such purchase may negatively affect a fund's operation or performance or because of a history of frequent trading by the investor.

. Each Vanguard fund (other than money market funds, short-term bond funds, and ETF Shares) generally prohibits, except as otherwise noted in the INVESTING WITH VANGUARD section, an investor's purchases or exchanges into a fund account for 60 calendar days after the investor has redeemed or exchanged out of that fund account.

. Certain Vanguard funds charge shareholders purchase and/or redemption fees on transactions.

See the INVESTING WITH VANGUARD section of this prospectus for further details on Vanguard's transaction policies.

Each fund (other than money market funds), in determining its net asset value, will use fair-value pricing as described in the SHARE PRICE section. Fair-value pricing may reduce or eliminate the profitability of certain frequent-trading strategies.

DO NOT INVEST WITH VANGUARD IF YOU ARE A MARKET-TIMER.

TURNOVER RATE

Although the Fund normally seeks to invest for the long term, it may sell securities regardless of how long they have been held. Generally, index-oriented funds sell securities only in response to redemption requests or changes in the composition of a target index. The Financial Highlights section of this prospectus shows the Fund's turnover rate. A turnover rate of 100%, for example, would mean that the Fund had sold and replaced securities valued at 100% of its net assets within a one-year period. The average turnover rate for indexed domestic stock funds was approximately 63%,

9

and for domestic stock funds, the average turnover rate was approximately 94%, both as reported by Morningstar, Inc., on October 31, 2007.


PLAIN TALK ABOUT TURNOVER RATE

Before investing in a mutual fund, you should review its turnover rate. This gives an indication of how transaction costs, which are not included in the fund's expense ratio, could affect the fund's future returns. In general, the greater the volume of buying and selling by the fund, the greater the impact that brokerage commissions and other transaction costs will have on its return. Also, funds with high turnover rates may be more likely to generate capital gains that must be distributed to shareholders as taxable income.

THE FUND AND VANGUARD

The Fund is a member of The Vanguard Group, a family of 37 investment companies with more than 150 funds holding assets in excess of $1.2 trillion. All of the funds that are members of The Vanguard Group share in the expenses associated with administrative services and business operations, such as personnel, office space, equipment, and advertising.

Vanguard also provides marketing services to the funds. Although shareholders do not pay sales commissions or 12b-1 distribution fees, each fund (or in the case of a fund with multiple share classes, each share class of the fund) pays its allocated share of The Vanguard Group's marketing costs.


PLAIN TALK ABOUT VANGUARD'S UNIQUE CORPORATE STRUCTURE

The Vanguard Group is truly a MUTUAL mutual fund company. It is owned jointly by the funds it oversees and thus indirectly by the shareholders in those funds. Most other mutual funds are operated by management companies that may be owned by one person, by a group of individuals, or by investors who own the management company's stock. The management fees charged by these companies include a profit component over and above the companies' cost of providing services. By contrast, Vanguard provides services to its member funds on an at-cost basis, with no profit component, which helps to keep the funds' expenses low.

10

INVESTMENT ADVISOR

The Vanguard Group, Inc. (Vanguard), P.O. Box 2600, Valley Forge, PA 19482, which began operations in 1975, serves as advisor to the Fund through its Quantitative Equity Group. As of October 31, 2007, Vanguard served as advisor for approximately $1 trillion in assets. Vanguard manages the Fund on an at-cost basis, subject to the supervision and oversight of the trustees and officers of the Fund.

For the fiscal year ended October 31, 2007, the advisory expenses represented an effective annual rate of 0.01% of the Fund's average net assets.

For a discussion of why the board of trustees approved the Fund's investment advisory arrangement, see the most recent semiannual report to shareholders covering the fiscal period ended April 30.

GEORGE U. SAUTER is Chief Investment Officer and Managing Director of Vanguard. As Chief Investment Officer, he is responsible for the oversight of Vanguard's Quantitative Equity and Fixed Income Groups. The investments managed by these two groups include active quantitative equity funds, equity index funds, active bond funds, index bond funds, stable value portfolios, and money market funds. Since joining Vanguard in 1987, Mr. Sauter has been a key contributor to the development of Vanguard's stock indexing and active quantitative equity investment strategies. He received his A.B. in Economics from Dartmouth College and an M.B.A. in Finance from the University of Chicago.


PLAIN TALK ABOUT THE FUND'S PORTFOLIO MANAGER

The manager primarily responsible for the day-to-day management of the Fund is:

Michael Perre, Principal of Vanguard. He has been with Vanguard since 1990; has managed investment portfolios since 1999; and has managed the Fund since its inception. Education: B.A., Saint Joseph's University; M.B.A., Villanova University.

The Statement of Additional Information provides information about the portfolio manager's compensation, other accounts under management, and ownership of securities in the Fund.

11

DIVIDENDS, CAPITAL GAINS, AND TAXES

FUND DISTRIBUTIONS
The Fund distributes to shareholders virtually all of its net income (interest and dividends less expenses) as well as any net capital gains realized from the sale of its holdings. Income dividends generally are distributed quarterly in March, June, September, and December; capital gains distributions generally occur annually in December.

Your distributions will be reinvested in additional Fund shares and accumulate on a tax-deferred basis if you are investing through an employer-sponsored retirement or savings plan. You will not owe taxes on these distributions until you begin withdrawals from the plan. You should consult your plan administrator, your plan's Summary Plan Description, or your tax advisor about the tax consequences of plan withdrawals.


PLAIN TALK ABOUT DISTRIBUTIONS

As a shareholder, you are entitled to your portion of a fund's income from interest and dividends as well as gains from the sale of investments. Income consists of both the dividends that the fund earns from any stock holdings and the interest it receives from any money market and bond investments. Capital gains are realized whenever the fund sells securities for higher prices than it paid for them. These capital gains are either short-term or long-term, depending on whether the fund held the securities for one year or less or for more than one year. You receive the fund's earnings as either a dividend or capital gains distribution.

SHARE PRICE

The Fund's share price, called its net asset value, or NAV, is calculated each business day as of the close of regular trading on the New York Stock Exchange, generally 4 p.m., Eastern time. Each share class has its own NAV, which is computed by dividing the net assets allocated to each share class by the number of Fund shares outstanding for that class. On holidays or other days when the Exchange is closed, the NAV is not calculated, and the Fund does not transact purchase or redemption requests. However, on those days the value of the Fund's assets may be affected to the extent that the Fund holds foreign securities that trade on foreign markets that are open.

Stocks held by a Vanguard fund are valued at their market value when reliable market quotations are readily available. Certain short-term debt instruments used to manage a fund's cash are valued on the basis of amortized cost. The values of any foreign securities held by a fund are converted into U.S. dollars using an exchange rate

12

obtained from an independent third party. The values of any mutual fund shares held by a fund are based on the NAVs of the shares. The values of any ETF or closed-end fund shares held by a fund are based on the market value of the shares.

When reliable market quotations are not readily available, securities are priced at their fair value (the amount that the owner might reasonably expect to receive upon the current sale of a security). A fund also will use fair-value pricing if the value of a security it holds has been materially affected by events occurring before the fund's pricing time but after the close of the primary markets or exchanges on which the security is traded. This most commonly occurs with foreign securities, which may trade on foreign exchanges that close many hours before the fund's pricing time. Intervening events might be company-specific (e.g., earnings report, merger announcement); country-specific (e.g., natural disaster, economic or political news, act of terrorism, interest rate change); or global. Intervening events include price movements in U.S. markets that are deemed to affect the value of foreign securities. Fair-value pricing may be used for domestic securities--for example, if (1) trading in a security is halted and does not resume before the fund's pricing time or if a security does not trade in the course of a day, and (2) the fund holds enough of the security that its price could affect the fund's NAV.

Fair-value prices are determined by Vanguard according to procedures adopted by the board of trustees. When fair-value pricing is employed, the prices of securities used by a fund to calculate its NAV may differ from quoted or published prices for the same securities.

Vanguard fund share prices can be found daily in the mutual fund listings of most major newspapers under various "Vanguard" headings.

13

FINANCIAL HIGHLIGHTS

The following financial highlights table is intended to help you understand the Investor Shares' financial performance for the period shown, and certain information reflects financial results for a single Investor Share. The total return in the table represents the rate that an investor would have earned during the period on an investment in the Investor Shares (assuming reinvestment of all distributions). This information has been derived from the financial statements audited by PricewaterhouseCoopers LLP, an independent registered public accounting firm, whose report--along with the Fund's financial statements--is included in the Fund's annual report to shareholders. To receive a free copy of the latest annual or semiannual report, you may access a report online at www.vanguard.com, or you may contact Vanguard by telephone or by mail.


PLAIN TALK ABOUT HOW TO READ THE FINANCIAL HIGHLIGHTS TABLE

The Investor Shares began the fiscal period ended October 31, 2007 with a net asset value (price) of $20.00 per share. During the period, each Investor Share earned $0.542 from investment income (interest and dividends) and $1.477 from investments that had appreciated in value or that were sold for higher prices than the Fund paid for them.

Shareholders received $0.409 per share in the form of dividend distributions.

The share price at the end of the period was $21.61, reflecting earnings of $2.019 per share and distributions of $0.409 per share. This was an increase of $1.61 per share (from $20.00 at the beginning of the period to $21.61 at the end of the period). For a shareholder who reinvested the distributions in the purchase of more shares, the total return was 10.16% for the period.

As of October 31, 2007, the Investor Shares had approximately $67 million in net assets. For the period, the annualized expense ratio was 0.40% ($4.00 per $1,000 of net assets), and the annualized net investment income amounted to 2.43% of average net assets. The Fund sold and replaced securities valued at an annualized rate of 11% of its net assets.

14

HIGH DIVIDEND YIELD INDEX FUND INVESTOR SHARES

 November 16, 2006/1/
For a Share Outstanding Throughout the Period to October 31,2007
-------------------------------------------------------------------------------
NET ASSET VALUE, BEGINNING OF PERIOD $20.00
--------------------------------------------------------------------------------
INVESTMENT OPERATIONS
--------------------------------------------------------------------------------
Net Investment Income .542/2/
--------------------------------------------------------------------------------
Net Realized and Unrealized Gain (Loss) on Investments 1.477
--------------------------------------------------------------------------------
Total from Investment Operations 2.019
--------------------------------------------------------------------------------
DISTRIBUTIONS
--------------------------------------------------------------------------------
Dividends from Net Investment Income (.409)
--------------------------------------------------------------------------------
Distributions from Realized Capital Gains --
--------------------------------------------------------------------------------
Total Distributions (.409)
--------------------------------------------------------------------------------
NET ASSET VALUE, END OF PERIOD $21.61
--------------------------------------------------------------------------------

TOTAL RETURN 10.16%
--------------------------------------------------------------------------------
RATIOS/SUPPLEMENTAL DATA
--------------------------------------------------------------------------------
Net Assets, End of Period (Millions) $67
--------------------------------------------------------------------------------
Ratio of Expenses to Average Net Assets 0.40%/3/
--------------------------------------------------------------------------------
Ratio of Net Investment Income to Average Net Assets 2.43%/3/
--------------------------------------------------------------------------------
Turnover Rate/4/ 11%
--------------------------------------------------------------------------------
1 Inception.
2 Calculated based on average shares outstanding.
3 Annualized.

4 Excludes the value of portfolio securities received or delivered as a result of in-kind purchases or redemptions of the fund's capital shares, including ETF creation units.

15

INVESTING WITH VANGUARD

The Fund is an investment option in your retirement or savings plan. Your plan administrator or your employee benefits office can provide you with detailed information on how to participate in your plan and how to elect the Fund as an investment option.

. If you have any questions about the Fund or Vanguard, including those about the Fund's investment objective, strategies, or risks, contact Vanguard's Participant Access Center, toll-free, at 800-523-1188.

. If you have questions about your account, contact your plan administrator or the organization that provides recordkeeping services for your plan.

. Be sure to carefully read each topic that pertains to your transactions with Vanguard.

. Vanguard reserves the right to change these policies without prior notice to shareholders.

INVESTMENT OPTIONS AND ALLOCATIONS
Your plan's specific provisions may allow you to change your investment selections, the amount of your contributions, or how your contributions are allocated among the investment choices available to you. Contact your plan administrator or employee benefits office for more details.

TRANSACTIONS
Contribution, exchange, or redemption requests must be in good order. Good order means that your request includes complete information on your contribution, exchange, or redemption, and that Vanguard has received the appropriate assets.

In all cases, your transaction will be based on the Fund's next-determined NAV after Vanguard receives your request (or, in the case of new contributions, the next-determined NAV after Vanguard receives the order from your plan administrator). As long as this request is received before the close of trading on the New York Stock Exchange, generally 4 p.m., Eastern time, you will receive that day's NAV. This is known as your trade date.

EXCHANGES
The exchange privilege (your ability to redeem shares from one fund to purchase shares of another fund) may be available to you through your plan. Although we make every effort to maintain the exchange privilege, Vanguard reserves the right to revise or terminate this privilege, limit the amount of an exchange, or reject any exchange, at any time, without notice. Because excessive exchanges can disrupt the management of the Vanguard funds and increase their transaction costs, Vanguard places certain limits on the exchange privilege.

16

If you are exchanging out of any Vanguard fund (other than money market funds and short-term bond funds), the following policy applies, regardless of the dollar amount:

You must wait 60 days before exchanging back into the fund. The 60-day clock restarts after every exchange out of the fund.

The policy does not apply to the following:

. Exchange requests submitted by mail to Vanguard. (Exchange requests submitted by fax or wire are not mail requests and remain subject to the policy.)

. Purchases of shares with participant payroll or employer contributions or loan repayments.

. Purchases of shares with reinvested dividend or capital gains distributions.

. Distributions, loans, and in-service withdrawals from a plan.

. Redemptions of shares as part of a plan termination or at the direction of the plan.

. Redemptions of shares to pay fund or account fees.

. Share or asset transfers or rollovers.

. Re-registrations of shares within the same fund.

. Conversions of shares from one share class to another in the same fund.

. Automated transactions executed during the first six months of a participant's enrollment in the Vanguard Managed Account Program.

Before making an exchange to or from another fund available in your plan, consider the following:

. Certain investment options, particularly funds made up of company stock or investment contracts, may be subject to unique restrictions.

. Be sure to read that fund's prospectus. Contact Vanguard's Participant Access Center, toll-free, at 800-523-1188 for a copy.

. Vanguard can accept exchanges only as permitted by your plan. Contact your plan administrator for details on other exchange policies that apply to your plan.

PLANS FOR WHICH VANGUARD DOES NOT SERVE AS RECORDKEEPER: If Vanguard does not serve as recordkeeper for your plan, your plan's recordkeeper will establish accounts in Vanguard funds. In such accounts, we cannot always monitor the trading activity of individual clients. However, we review trading activity at the omnibus level, and if we detect suspicious activity, we will investigate and take appropriate action. If necessary, Vanguard may prohibit additional purchases of fund shares by an intermediary or by certain of the intermediary's clients. Intermediaries may also monitor participants' trading activity in the Vanguard funds.

17

For those Vanguard funds that charge purchase or redemption fees, intermediaries that establish accounts in the Vanguard funds will be asked to assess purchase and redemption fees on participant accounts and remit these fees to the funds. The application of purchase and redemption fees and frequent-trading policies may vary among intermediaries. There are no assurances that Vanguard will successfully identify all intermediaries or that intermediaries will properly assess purchase and redemption fees or administer frequent-trading policies. If a firm other than Vanguard serves as recordkeeper for your plan, please read that firm's materials carefully to learn of any other rules or fees that may apply.

PORTFOLIO HOLDINGS

We generally post on our website at www.vanguard.com, in the Holdings section of the Fund's Profile page, a detailed list of the securities held by the Fund (under Portfolio Holdings), as of the most recent calendar-quarter-end. This list is generally updated within 30 days after the end of each calendar quarter. Vanguard may exclude any portion of these portfolio holdings from publication when deemed in the best interest of the Fund. We also generally post the ten largest stock portfolio holdings of the Fund and the percentage of the Fund's total assets that each of these holdings represents, as of the most recent calendar-quarter-end. This list is generally updated within 15 calendar days after the end of each calendar quarter. Please consult the Fund's Statement of Additional Information or our website for a description of the policies and procedures that govern disclosure of the Fund's portfolio holdings.

18

ACCESSING FUND INFORMATION BY COMPUTER

VANGUARD ON THE WORLD WIDE WEB WWW.VANGUARD.COM

Use your personal computer to visit Vanguard's education-oriented website, which provides timely news and information about Vanguard funds and services; the online Education Center that offers a variety of mutual fund classes; and easy-to-use, interactive tools to help you create your own investment and retirement strategies.

Vanguard, Connect with Vanguard, Plain Talk, Vanguard ETF, and the ship logo are trademarks of The Vanguard Group, Inc. Vanguard High Dividend Yield Index Fund and FTSE High Dividend Yield Index are not in any way sponsored, endorsed, sold, or promoted by FTSE International Limited ("FTSE") or by the London Stock Exchange Plc ("Exchange") or by The Financial Times Limited ("FT"), and neither FTSE nor Exchange nor FT makes any warranty or representation whatsoever, expressly or impliedly, either as to the results to be obtained from the use of the FTSE High Dividend Yield Index ("Index") and/or the figure at which the said Index stands at any particular time on any particular day or otherwise. The Index is compiled and calculated by FTSE. However, neither FTSE nor Exchange nor FT shall be liable (whether in negligence or otherwise) to any person for any error in the Index, and neither FTSE nor Exchange nor FT shall be under any obligation to advise any person of any error therein.

"FTSE(R)"is a trademark jointly owned by the London Stock Exchange Plc and The Financial Times Limited and is used by FTSE International Limited under license. The FTSE High Dividend Yield Index is calculated by FTSE International Limited. FTSE International Limited does not sponsor, endorse, or promote the Fund; is not in any way connected to it; and does not accept any liability in relation to its issue, operation, and trading. All other marks are the exclusive property of their respective owners.

19

GLOSSARY OF INVESTMENT TERMS

ACTIVE MANAGEMENT. An investment approach that seeks to exceed the average returns of the financial markets. Active managers rely on research, market forecasts, and their own judgment and experience in selecting securities to buy and sell.

CAPITAL GAINS DISTRIBUTION. Payment to mutual fund shareholders of gains realized on securities that a fund has sold at a profit, minus any realized losses.

CASH INVESTMENTS. Cash deposits, short-term bank deposits, and money market instruments that include U.S. Treasury bills and notes, bank certificates of deposit (CDs), repurchase agreements, commercial paper, and banker's acceptances.

COMMON STOCK. A security representing ownership rights in a corporation. A stockholder is entitled to share in the company's profits, some of which may be paid out as dividends.

DIVIDEND DISTRIBUTION. Payment to mutual fund shareholders of income from interest or dividends generated by a fund's investments.

EXPENSE RATIO. The percentage of a fund's average net assets used to pay its expenses during a fiscal year. The expense ratio includes management expenses--such as advisory fees, account maintenance, reporting, accounting, legal, and other administrative expenses--and any 12b-1 distribution fees. It does not include the transaction costs of buying and selling portfolio securities.

INCEPTION DATE. The date on which the assets of a fund (or one of its share classes) are first invested in accordance with the fund's investment objective. For funds with a subscription period, the inception date is the day after that period ends. Investment performance is measured from the inception date.

INDEX. An unmanaged group of securities whose overall performance is used as a standard to measure the investment performance of a particular market.

INVESTMENT ADVISOR. An organization that is responsible for making the day-to-day decisions regarding a fund's investments.

MEDIAN MARKET CAP. An indicator of the size of companies in which a fund invests; the midpoint of market capitalization (market price x shares outstanding) of a fund's stocks, weighted by the proportion of the fund's assets invested in each stock. Stocks representing half of the fund's assets have market capitalizations above the median, and the rest are below it.

NET ASSET VALUE (NAV). The market value of a mutual fund's total assets, minus liabilities, divided by the number of shares outstanding. The value of a single share is also called its share value or share price.

20

PASSIVE MANAGEMENT. A low-cost investment strategy in which a mutual fund attempts to track--rather than outperform--a specified market benchmark or "index"; also known as indexing.

TOTAL RETURN. A percentage change, over a specified time period, in a mutual fund's net asset value, assuming the reinvestment of all distributions of dividends and
capital gains.

VOLATILITY. The fluctuations in value of a mutual fund or other security. The greater a fund's volatility, the wider the fluctuations in its returns.

YIELD. Income (interest or dividends) earned by an investment, expressed as a percentage of the investment's price.

21

[SHIP LOGO][VANGUARD/(R)/ LOGO]

Institutional Division
P.O. Box 2900
Valley Forge, PA 19482-2900

CONNECT WITH VANGUARD/(R)/ > www.vanguard.com

FOR MORE INFORMATION
If you would like more information about Vanguard High Dividend Yield Index Fund, the following documents are available free upon request:

ANNUAL/SEMIANNUAL REPORTS TO SHAREHOLDERS
Additional information about the Fund's investments is available in the Fund's annual and semiannual reports to shareholders. In the annual report, you will find a discussion of the market conditions and investment strategies that significantly affected the Fund's performance during its last fiscal year.

STATEMENT OF ADDITIONAL INFORMATION (SAI)
The SAI provides more detailed information about the Fund.

The current annual and semiannual reports and the SAI are incorporated by reference into (and are thus legally a part of) this prospectus.

To receive a free copy of the latest annual or semiannual report or the SAI, or to request additional information about the Fund or other Vanguard funds, please visit www.vanguard.com or contact us as follows:

The Vanguard Group
Participant Access Center
P.O. Box 2900
Valley Forge, PA 19482-2900
Telephone: 800-523-1188
Text telephone for people with hearing impairment: 800-749-7273

INFORMATION PROVIDED BY THE SECURITIES AND EXCHANGE COMMISSION (SEC) You can review and copy information about the Fund (including the SAI) at the SEC's Public Reference Room in Washington, DC. To find out more about this public service, call the SEC at 202-551-8090. Reports and other information about the Fund are also available in the EDGAR database on the SEC's Internet site at www.sec.gov, or you can receive copies of this information, for a fee, by electronic request at the following e-mail address: publicinfo@sec.gov, or by writing the Public Reference Section, Securities and Exchange Commission, Washington, DC 20549-0102.

Fund's Investment Company Act file number: 811-07443

(C) 2008 The Vanguard Group, Inc. All rights reserved. Vanguard Marketing Corporation, Distributor.

I623 022008


VANGUARD/(R)/ HIGH DIVIDEND YIELD ETF

> PROSPECTUS

EXCHANGE-TRADED FUND SHARES THAT ARE NOT INDIVIDUALLY REDEEMABLE

February 22, 2008


[SHIP LOGO][VANGUARD/(R)/ LOGO]


This prospectus contains financial data for the Fund through the fiscal year ended October 31, 2007.

NEITHER THE SECURITIES AND EXCHANGE COMMISSION NOR ANY STATE SECURITIES COMMISSION HAS APPROVED OR DISAPPROVED OF THESE SECURITIES OR PASSED UPON THE ACCURACY OR ADEQUACY OF THIS PROSPECTUS. ANY REPRESENTATION TO THE CONTRARY IS A CRIMINAL OFFENSE.


CONTENTS

-------------------------------------------------------------------------------
ETF Profile 1 Financial Highlights 25
-------------------------------------------------------------------------------
Investing in Vanguard ETF Shares 7 Glossary of Investment Terms 28
-------------------------------------------------------------------------------
More on the Fund and ETF Shares 8
-------------------------------------------------------------------------------
 The Fund and Vanguard 20
-------------------------------------------------------------------------------
 Investment Advisor 21
-------------------------------------------------------------------------------
 Dividends, Capital Gains, and 22
 Taxes
-------------------------------------------------------------------------------
 Daily Pricing 24
-------------------------------------------------------------------------------

A NOTE TO RETAIL INVESTORS
Vanguard ETF Shares can be purchased directly from the issuing Fund only in exchange for a basket of securities that is expected to be worth several million dollars. Most individual investors, therefore, will not be able to purchase ETF Shares directly from the Fund. Instead, these investors will purchase ETF Shares on the secondary market with the assistance of a broker. Thus, some of the information contained in this prospectus--such as information about purchasing and redeeming ETF Shares from the Fund and references to transaction fees imposed on purchases and redemptions--is not relevant to most individual investors.


ETF PROFILE--VANGUARD HIGH DIVIDEND YIELD ETF

The following profile summarizes key features of Vanguard High Dividend Yield ETF, an exchange-traded class of shares issued by Vanguard High Dividend Yield Index Fund.

INVESTMENT OBJECTIVE

The Fund seeks to track the performance of a benchmark index that measures the investment return of common stocks of companies that are characterized by high dividend yields.

PRIMARY INVESTMENT STRATEGIES
The Fund employs a "passive management"--or indexing--investment approach designed to track the performance of the FTSE/(R)/ High Dividend Yield Index, which consists of common stocks of companies that pay dividends that generally are higher than average. The Fund attempts to replicate the target index by investing all, or substantially all, of its assets in the stocks that make up the Index, holding each stock in approximately the same proportion as its weighting in the Index.

PRIMARY RISKS
An investment in the Fund could lose money over short or even long periods. You should expect the Fund's share price and total return to fluctuate within a wide range, like the fluctuations of the overall stock market. The Fund's performance could be hurt by:

. Stock market risk, which is the chance that stock prices overall will decline. Stock markets tend to move in cycles, with periods of rising prices and periods of falling prices.

. Investment style risk, which is the chance that returns from high dividend-paying stocks will trail returns from the overall stock market. Specific types of stocks tend to go through cycles of doing better--or worse--than the stock market in general. These periods have, in the past, lasted for as long as several years.

Because ETF Shares are traded on an exchange, they are subject to additional risks:

. High Dividend Yield ETF Shares are listed for trading on the American Stock Exchange (AMEX) and can be bought and sold on the secondary market at market prices. Although it is expected that the market price of a High Dividend Yield ETF Share typically will approximate its net asset value, there may be times when the market price and the NAV vary significantly. Thus, you may pay more than NAV when buying High Dividend Yield ETF Shares on the secondary market, and you may receive less than NAV when you sell those shares.

1

. Although High Dividend Yield ETF Shares are listed for trading on the AMEX, it is possible that an active trading market may not be maintained.

. Trading of High Dividend Yield ETF Shares on the AMEX may be halted if AMEX officials deem such action appropriate, if High Dividend Yield ETF Shares are delisted from the AMEX, or if the activation of marketwide "circuit breakers" halts stock trading generally.

PERFORMANCE/RISK INFORMATION

The following bar chart and table are intended to help you understand the risks of investing in the Fund. The bar chart shows the performance of the Fund's ETF Shares in their first full calendar year. The table shows how the average annual total returns of the ETF Shares compare with those of the Fund's target index. Keep in mind that the Fund's past performance (before and after taxes) does not indicate how the Fund will perform in the future.

ANNUAL TOTAL RETURN--ETF SHARES/1/

BAR CHART
[-20% to 20%]

2007 1.68%

1 The return figure assumes that an investor purchased shares at net asset value, and does not reflect the transaction fee imposed on purchases and redemptions of Creation Units or the commissions that investors pay their brokers to buy and sell ETF Shares on the secondary market..

During the period shown in the bar chart, the highest return for a calendar quarter was 5.13% (quarter ended June 30, 2007), and the lowest return for a quarter was -5.17% (quarter ended December 31, 2007).

2

AVERAGE ANNUAL TOTAL RETURNS FOR PERIODS ENDED DECEMBER 31, 2007

 1 Year Since Inception/1/
-------------------------------------------------------------------------------
VANGUARD HIGH DIVIDEND YIELD ETF
BASED ON NAV
-------------------------------------------------------------------------------
Return Before Taxes 1.68% 4.73%
-------------------------------------------------------------------------------
Return After Taxes on Distributions 1.29 4.34
-------------------------------------------------------------------------------
Return After Taxes on Distributions and Sale
of Fund Shares 1.63 4.03
-------------------------------------------------------------------------------
BASED ON MARKET PRICE
-------------------------------------------------------------------------------
Return Before Taxes 1.57% 4.69%
-------------------------------------------------------------------------------
FTSE HIGH DIVIDEND YIELD INDEX 1.81% 4.85%
(reflects no deduction for fees,
expenses, or taxes)
-------------------------------------------------------------------------------

1 Since-inception returns are from November 10, 2006--the inception date of the ETF Shares--through December 31, 2007.

NOTE ON AFTER-TAX RETURNS. Actual after-tax returns depend on your tax situation and may differ from those shown in the preceding table. When after-tax returns are calculated, it is assumed that the shareholder was in the highest federal marginal income tax bracket at the time of each distribution of income or capital gains or upon redemption. State and local income taxes are not reflected in the calculations. Please note that after-tax returns are shown only for the ETF Shares and will differ for each share class in an amount approximately equal to the difference in expense ratios. After-tax returns are not relevant for a shareholder who holds fund shares in a tax-deferred account, such as an individual retirement account or a 401(k) plan. Also, figures captioned Return After Taxes on Distributions and Sale of Fund Shares will be higher than other figures for the same period if a capital loss occurs upon redemption and results in an assumed tax deduction for the shareholder.

FEES AND EXPENSES

The following table describes the fees and expenses you may pay if you buy and hold ETF Shares of Vanguard High Dividend Yield Index Fund. As is the case with all mutual funds, transaction costs incurred by the Fund for buying and selling securities are not reflected in the table. However, these costs are reflected in the investment performance figures included in this prospectus. The expenses shown under Annual Fund Operating Expenses are based on those incurred in the fiscal year ended October 31, 2007.

3

Shareholder Fees
(Fees paid directly from your investment)
-----------------------------------------------------------------------------------------------------------------------------
Sales Charge (Load) Imposed on Purchases None
-----------------------------------------------------------------------------------------------------------------------------
Sales Charge (Load) Imposed on Reinvested Dividends None
-----------------------------------------------------------------------------------------------------------------------------
Transaction Fee on Purchases and Redemptions $250/1/
-----------------------------------------------------------------------------------------------------------------------------


Annual Fund Operating Expenses
(Expenses deducted from the Fund's assets)
-----------------------------------------------------------------------------------------------------------------------------
Management Expenses 0.14%
-----------------------------------------------------------------------------------------------------------------------------
12b-1 Distribution Fee None
-----------------------------------------------------------------------------------------------------------------------------
Other Expenses 0.11%
-----------------------------------------------------------------------------------------------------------------------------
Total Annual Fund Operating Expenses 0.25%
-----------------------------------------------------------------------------------------------------------------------------
1 If a Creation Unit is purchased or redeemed outside the Continuous Net Settlement System of the National Securities
 Clearing Corporation, or with a nonconforming basket, an additional fee will apply. Please see "Purchasing Vanguard ETF
 Shares From an Issuing Fund."
 An investor buying or selling High Dividend Yield ETF Shares on the secondary market will pay a commission to his or her
 broker in an amount established by the broker. An investor converting into High Dividend Yield ETF Shares will pay a $50
 conversion fee to Vanguard; in addition, the broker may impose a conversion fee of its own.

The following example is intended to help retail investors compare the cost of investing in High Dividend Yield ETF with the cost of investing in other funds. It illustrates the hypothetical expenses that such investors would incur over various periods if they invest $10,000 in High Dividend Yield ETF. This example assumes that High Dividend Yield ETF Shares provide a return of 5% a year and that operating expenses remain the same. This example does not include the brokerage commissions that retail investors will pay to buy and sell High Dividend Yield ETF Shares. It also does not include the transaction fees on purchases and redemptions of Creation Units, because these fees will not be imposed on retail investors.

1 Year 3 Years 5 Years 10 Years
-----------------------------------------------------------------------------
$26 $80 $141 $318
-----------------------------------------------------------------------------

4

The value of a High Dividend Yield ETF Creation Unit as of October 31, 2007, was approximately $5.455 million. Assuming an investment of $5.455 million, payment of the standard $250 transaction fee applicable to both the purchase and redemption of the Creation Unit, a 5% return each year, and no change in operating expenses, the total costs of holding a High Dividend Yield ETF Creation Unit would be $14,461 if the Creation Unit were redeemed after one year and $77,258 if redeemed after three years.

THESE EXAMPLES SHOULD NOT BE CONSIDERED TO REPRESENT ACTUAL EXPENSES OR PERFORMANCE FROM THE PAST OR FOR THE FUTURE. ACTUAL FUTURE EXPENSES MAY BE HIGHER OR LOWER THAN THOSE SHOWN.


PLAIN TALK ABOUT FUND EXPENSES

All mutual funds have operating expenses. These expenses, which are deducted from a fund's gross income, are expressed as a percentage of the net assets of the fund. Vanguard High Dividend Yield ETF Shares' expense ratio in fiscal year 2007 was 0.25%, or $2.50 per $1,000 of average net assets. The average large-cap value fund had expenses in 2006 of 1.35%, or $13.50 per $1,000 of average net assets (derived from data provided by Lipper Inc., which reports on the mutual fund industry). Management expenses, which are one part of operating expenses, include investment advisory fees as well as other costs of managing a fund--such as account maintenance, reporting, accounting, legal, and other administrative expenses.


PLAIN TALK ABOUT COSTS OF INVESTING

Costs are an important consideration in choosing a mutual fund. That's because you, as a shareholder, pay the costs of operating a fund, plus any transaction costs incurred when the fund buys or sells securities. These costs can erode a substantial portion of the gross income or the capital appreciation a fund achieves. Even seemingly small differences in expenses can, over time, have a dramatic effect on a fund's performance.

5

ADDITIONAL INFORMATION
As of October 31, 2007
---------------------------------------------------------------------------------------------------
Net Assets (all share classes of $181 million
Vanguard High Dividend Yield
Index Fund)
---------------------------------------------------------------------------------------------------
Investment Advisor The Vanguard Group, Inc., Valley Forge, Pa., since inception
---------------------------------------------------------------------------------------------------
Dividends and Capital Gains Dividends are distributed quarterly in March, June,
 September, and December; capital gains, if any, are
 distributed annually in December.
---------------------------------------------------------------------------------------------------
Inception Date Investor Shares--November 16, 2006
 ETF Shares--November 10, 2006
---------------------------------------------------------------------------------------------------
Number of High Dividend Yield ETF 100,000
Shares in a Creation Unit
---------------------------------------------------------------------------------------------------
Vanguard Fund Number 923
---------------------------------------------------------------------------------------------------
CUSIP Number 921946406
---------------------------------------------------------------------------------------------------
AMEX Ticker Symbol VYM
---------------------------------------------------------------------------------------------------

6

INVESTING IN VANGUARD ETF(TM) SHARES

WHAT ARE VANGUARD ETF SHARES?

Vanguard ETF Shares are an exchange-traded class of shares issued by certain Vanguard mutual funds. ETF Shares represent an interest in the portfolio of stocks or bonds held by the issuing fund. This prospectus describes High Dividend Yield ETF, a class of shares issued by Vanguard High Dividend Yield Index Fund. In addition to ETF Shares, the Fund offers one conventional (not exchange-traded) class of shares. This prospectus, however, relates only to ETF Shares.

HOW ARE VANGUARD ETF SHARES DIFFERENT FROM CONVENTIONAL MUTUAL FUND SHARES? Conventional mutual fund shares are bought from and redeemed with the issuing fund for cash at a net asset value (NAV) typically calculated once a day. ETF Shares, by contrast, cannot be purchased from or redeemed with the issuing fund except by or through Authorized Participants (defined below), and then only for an in-kind basket of securities.

An organized trading market is expected to exist for ETF Shares, unlike conventional mutual fund shares, because ETF Shares are listed for trading on a national securities exchange. Investors can purchase and sell ETF Shares on the secondary market through a broker. Secondary-market transactions occur not at NAV, but at market prices that change throughout the day, based on the supply of, and demand for, ETF Shares and on changes in the prices of the fund's portfolio holdings.

The market price of a fund's ETF Shares will differ somewhat from the NAV of those shares. The difference between market price and NAV is expected to be small most of the time, but in times of extreme market volatility the difference may become significant.

HOW DO I BUY AND SELL VANGUARD ETF SHARES?

Each Vanguard fund that offers ETF Shares issues and redeems those shares only in large bundles, known as "Creation Units", worth millions of dollars. To purchase or redeem a Creation Unit, you must be an Authorized Participant or you must trade through a broker that is an Authorized Participant. An Authorized Participant is a participant in the Depository Trust Company that has executed a Participant Agreement with the fund's Distributor. Vanguard will provide a list of Authorized Participants upon request. Because Creation Units can be purchased only in exchange for a basket of securities likely to cost millions of dollars, it is expected that only a limited number of institutional investors will purchase and redeem ETF Shares directly with an issuing fund.

Investors who cannot afford to purchase a Creation Unit can acquire ETF Shares in one of two ways. If you own conventional shares of a stock fund that issues ETF Shares, you can, for a fee, convert those shares into ETF Shares of equivalent value.

7

For more information about the conversion privilege, see "Conversion Privilege" under MORE ON THE FUND AND ETF SHARES. In addition, any investor can purchase ETF Shares on the secondary market through a broker. ETF Shares are publicly traded on a national securities exchange. To acquire ETF Shares through either means, you must have a brokerage account. For information about acquiring ETF Shares through conversion of conventional shares or through a secondary-market purchase, please contact your broker. If you want to sell ETF Shares, you must do so through your broker; ETF Shares cannot be converted back into conventional shares.

When you buy or sell ETF Shares on the secondary market, your broker will charge a commission. You will also incur the cost of the "bid-asked spread," which is the difference between the price a dealer will pay for a security and the somewhat higher price at which the dealer will sell the same security. In addition, because secondary-market transactions occur at market prices, you may pay more than NAV when you buy ETF Shares, and receive less than NAV when you sell those shares.

MORE ON THE FUND AND ETF SHARES

The following sections explain the primary investment strategies and policies that the Fund uses in pursuit of its objective. Look for this FLAG LOGO symbol throughout the prospectus. It is used to mark detailed information about the more significant risks that you would confront as a Fund shareholder. The Fund's board of trustees, which oversees the Fund's management, may change investment strategies or policies in the interest of shareholders without a shareholder vote, unless those strategies or policies are designated as fundamental. Note that the Fund's investment objective is not fundamental and may be changed without a shareholder vote. Under normal circumstances, the Fund will invest at least 80% of its assets in the stocks that make up its target index. The Fund may change its 80% policy only upon 60 days' notice to shareholders.

MARKET EXPOSURE
The Fund invests mainly in common stocks of companies that are characterized by high dividend yields relative to the overall market's yield. Stocks purchased by the Fund are expected to pay high dividends and may also have the potential for long-term capital appreciation.

FLAG LOGO
THE FUND IS SUBJECT TO STOCK MARKET RISK, WHICH IS THE CHANCE THAT STOCK PRICES OVERALL WILL DECLINE. STOCK MARKETS TEND TO MOVE IN CYCLES, WITH PERIODS OF RISING PRICES AND PERIODS OF FALLING PRICES.

8

To illustrate the volatility of stock prices, the following table shows the best, worst, and average annual total returns for the U.S. stock market over various periods as measured by the Standard & Poor's 500 Index, a widely used barometer of market activity. (Total returns consist of dividend income plus change in market price.) Note that the returns shown do not include the costs of buying and selling stocks or other expenses that a real-world investment portfolio would incur.

U.S. STOCK MARKET RETURNS
(1926-2007)

 1 Year 5 Years 10 Years 20 Years
-------------------------------------------------------------------------
Best 54.2% 28.6% 19.9% 17.8%
-------------------------------------------------------------------------
Worst -43.1 -12.4 -0.8 3.1
-------------------------------------------------------------------------
Average 12.2 10.4 11.1 11.4
-------------------------------------------------------------------------

The table covers all of the 1-, 5-, 10-, and 20-year periods from 1926 through 2007. You can see, for example, that although the average return on common stocks for all of the 5-year periods was 10.4%, average returns for individual 5-year periods ranged from -12.4% (from 1928 through 1932) to 28.6% (from 1995 through 1999). These average returns reflect past performance of common stocks; you should not regard them as an indication of future performance of either the stock market as a whole or the Fund in particular.

Stocks of publicly traded companies and funds that invest in stocks are often classified according to market value, or market capitalization. These classifications typically include small-cap, mid-cap, and large-cap. It's important to understand that, for both companies and stock funds, market-capitalization ranges change over time. Also, interpretations of size vary, and there are no "official" definitions of small-, mid-, and large-cap, even among Vanguard fund advisors. The asset-weighted median market capitalization of the Fund as of October 31, 2007, was $115.6 billion.

FLAG LOGO
THE FUND IS SUBJECT TO INVESTMENT STYLE RISK, WHICH IS THE CHANCE THAT RETURNS FROM HIGH DIVIDEND-PAYING STOCKS WILL TRAIL RETURNS FROM THE OVERALL STOCK MARKET. SPECIFIC TYPES OF STOCKS TEND TO GO THROUGH CYCLES OF DOING BETTER--OR WORSE--THAN THE STOCK MARKET IN GENERAL. THESE PERIODS HAVE, IN THE PAST, LASTED FOR AS LONG AS SEVERAL YEARS.

SECURITY SELECTION

The Fund attempts to track the investment performance of the FTSE High Dividend Yield Index, which consists of companies whose common stocks are characterized by high dividend yields relative to the market. The FTSE High Dividend Yield Index is maintained by FTSE Group (FTSE), a widely known global index provider that currently calculates more than 100,000 indexes.

9

The Fund uses the replication method of indexing. This means that the Fund holds each security found in the FTSE High Dividend Yield Index in approximately the same proportion as represented in the Index itself. For example, if 5% of the Index were made up of the stock of a specific company, the Fund would invest about 5% of its assets in that company.

OTHER INVESTMENT POLICIES AND RISKS

The Fund reserves the right to substitute a different index for the index it currently tracks if the current index is discontinued, if the Fund's agreement with the sponsor of its target index is terminated, or for any other reason determined in good faith by the Fund's board of trustees. In any such instance, the substitute index would measure the same market segment as the current index.

The Fund may invest in foreign securities to the extent necessary to carry out its investment strategy of holding all, or substantially all, of the stocks that make up the index it tracks. It is not expected that The Fund will invest more than 5% of its assets in foreign securities.

To track its target index as closely as possible, the Fund attempts to remain fully invested in stocks. To help stay fully invested and to reduce transaction costs, the Fund may invest, to a limited extent, in derivatives. Generally speaking, a derivative is a financial contract whose value is based on the value of a financial asset (such as a stock, bond, or currency), a physical asset (such as gold), or a market index (such as the S&P 500 Index). The Fund will not use derivatives for speculation or for the purpose of leveraging (magnifying) investment returns.

CASH MANAGEMENT

The Fund's daily cash balance may be invested in one or more Vanguard CMT Funds, which are very low-cost money market funds. When investing in a Vanguard CMT Fund, the Fund bears its proportionate share of the at-cost expenses of the CMT Fund in which it invests.

10

TEMPORARY INVESTMENT MEASURES
The Fund may temporarily depart from its normal investment policies and strategies when doing so is believed to be in the Fund's best interest, so long as the alternative is consistent with the Fund's investment objective. For instance, the Fund may invest beyond the normal limits in derivatives or ETFs that are consistent with the Fund's objective when those instruments are more favorably priced or provide needed liquidity, as might be the case when the Fund receives large cash flows that it cannot prudently invest immediately.

SPECIAL RISKS OF EXCHANGE-TRADED SHARES

FLAG LOGO
ETF SHARES ARE NOT INDIVIDUALLY REDEEMABLE. They can be redeemed with the issuing Fund at NAV only in large blocks known as Creation Units. You would incur brokerage costs in purchasing enough ETF Shares to constitute a Creation Unit.

FLAG LOGO

THE MARKET PRICE OF ETF SHARES MAY DIFFER FROM NET ASSET VALUE. Vanguard ETF Shares are listed for trading on a national securities exchange and can be bought and sold on the secondary market at market prices. Although it is expected that the market price of an ETF Share typically will approximate its NAV, there may be times when the market price and the NAV differ significantly. Thus, you may pay more than NAV when you buy ETF Shares on the secondary market, and you may receive less than NAV when you sell those shares.

The market price of ETF Shares, like the price of any exchange-traded security, includes a "bid-asked spread" charged by the exchange specialist and other market-makers that cover the particular security. In times of severe market disruption, the bid-asked spread can increase significantly. This means that ETF Shares are most likely to be traded at a discount to NAV, and the discount is likely to be greatest, when the price of ETF Shares is falling fastest--and this may be the time that you most want to sell ETF Shares.

11

The following table shows the number ot times the Fund's ETF Shares traded at a premium or discount to NAV as well as the size of the premium or discount.

PREMIUM/DISCOUNT INFORMATION AS OF THE MOST RECENT CALENDAR QUARTER ENDED
DECEMBER 31, 2007
 Market Price Above
 or Equal to NAV Market Price Below NAV
----------------------------------------------------------------------------------------------
Basis Point Number Percentage of Number Percentage of
Differential/1/ of Days Total Days of Days Total Days
----------------------------------------------------------------------------------------------
VANGUARD HIGH DIVIDEND YIELD ETF (BEGINNING NOVEMBER 10, 2006)
----------------------------------------------------------------------------------------------
0-24.9 118 41.25% 150 52.45%
----------------------------------------------------------------------------------------------
25-49.9 9 3.15 4 1.40
----------------------------------------------------------------------------------------------
50-74.9 2 0.70 0 0.00
----------------------------------------------------------------------------------------------
75-100 1 0.35 0 0.00
----------------------------------------------------------------------------------------------
>100 2 0.70 0 0.00
----------------------------------------------------------------------------------------------
Total 132 46.15% 154 53.85%
----------------------------------------------------------------------------------------------
1 One basis point equals 1/100 of 1%.

The following table shows the cumulative (not annual) total returns of the Fund's ETF Shares, based on the shares' NAV and market price, and of the Fund's target index.

CUMULATIVE TOTAL RETURNS AS OF THE MOST RECENT CALENDAR QUARTER ENDED
DECEMBER 31, 2007

 Since
 1 Year Inception/1/
-----------------------------------------------------------------------
VANGUARD HIGH DIVIDEND YIELD ETF
-----------------------------------------------------------------------
Return Based on NAV 1.68% 5.41%
-----------------------------------------------------------------------
Return Based on Market Price 1.57 5.36
-----------------------------------------------------------------------
FTSE High Dividend Yield Index 1.81 5.55
-----------------------------------------------------------------------

1 Since-inception returns are from November 10, 2006--the inception date of the ETF Shares--through December 31, 2007.

NOTE: Vanguard's website will show the prior day's closing NAV and closing market price for the Fund's ETF Shares. The website also will disclose how frequently the Fund's ETF Shares traded at a premium or discount to NAV (based on closing NAVs and market prices) and the magnitudes of such premiums and discounts.

12

FLAG LOGO
AN ACTIVE TRADING MARKET MAY NOT EXIST. Although Vanguard ETF Shares are listed on a national securities exchange, it is possible that an active trading market may not be maintained.

FLAG LOGO
TRADING MAY BE HALTED. Trading of Vanguard ETF Shares on the national securities exchange will be halted whenever trading in equity securities generally is halted by the activation of marketwide "circuit breakers," which are tied to large decreases in the Dow Jones Industrial Average. Trading of ETF Shares also will be halted if (1) the shares are delisted from the listing exchange without first being listed on another exchange, or (2) exchange officials determine that such action is appropriate in the interest of a fair and orderly market or to protect investors.

Note: If trading of ETF Shares on the listing exchange is halted, eligible investors (see the following section) will still be able to purchase Creation Units of ETF Shares directly from the issuing Fund and redeem such units with the Fund.

PURCHASING VANGUARD ETF SHARES FROM THE ISSUING FUND
You can purchase ETF Shares from the issuing Fund if you meet the following criteria and comply with the following procedures:

. Eligible Investors. To purchase ETF Shares from the Fund, you must be an Authorized Participant or you must purchase through a broker that is an Authorized Participant. An Authorized Participant is a participant in the Depository Trust Company (DTC) that has executed a Participant Agreement with the Fund's Distributor. Most Authorized Participants are expected to be brokerage firms.

. Creation Units. You must purchase ETF Shares in large blocks known as "Creation Units." For the Fund, the number of ETF Shares in a Creation Unit is 100,000. The Fund will not issue fractional Creation Units.

. In-Kind Creation Basket. To purchase a Creation Unit-size block of ETF Shares, you must deposit with the issuing Fund a basket of securities. Each business day, after the close of trading on the AMEX, the Fund's advisor will make available, on the National Securities Clearing Corporation (NSCC) bulletin board, a list identifying the name and number of shares of each security to be included in the next business day's creation basket (each, a Deposit Security). The Fund reserves the right to permit or require purchasers to tender a nonconforming creation basket, including a basket that contains cash in lieu of any Deposit Security.

13

. Purchase Balancing Amount. In addition to the in-kind deposit of securities, you will either pay to, or receive from, the Fund an amount of cash (the Purchase Balancing Amount) equal to the difference between the NAV of a Creation Unit and the value of the Deposit Securities. The Purchase Balancing Amount ensures that the consideration paid by an investor for a Creation Unit is exactly equal to the value of the Creation Unit. The Fund's advisor will publish, on a daily basis, information about the previous day's Purchase Balancing Amount. You also must pay a transaction fee in cash. The Purchase Balancing Amount and the transaction fee, taken together, are referred to as the "Cash Component."

. Placement and Timing of Purchase Orders. A purchase order must be received by the Fund's Distributor prior to the close of regular trading on the New York Stock Exchange (generally 4 p.m., Eastern time) on the day the order is placed, and all other procedures set forth in the Participant Agreement must be followed, in order for you to receive the NAV determined on that day.

. Clearance and Settlement of Purchase Orders. Purchase orders will be processed either through a manual clearing process run by the DTC or through an enhanced clearing process that is available only to those DTC participants that also are participants in the Continuous Net Settlement System of the NSCC. Authorized Participants that do not use the NSCC's enhanced clearing process will be charged a higher transaction fee.

. Transaction Fee on Purchase of Creation Units. The Fund imposes a transaction fee in the amount of $250 on each purchase of Creation Units effected through the NSCC's enhanced clearing process, regardless of the number of units purchased. Thus, for example, whether an investor purchases one, two, or ten Creations Units of High Dividend Yield ETF Shares, the transaction fee would be $250. If the investor does not create or redeem through the Continuous Net Settlement System of the National Securities Clearing Corporation, there is an addidtional fee up to $1,568, for a total of up to $1,818. For an investor purchasing Creation Units through the manual DTC clearing process, the maximum transaction fee would be $1,818. Investors permitted to tender a nonconforming creation basket may be subject to an additional charge commensurate with the cost to the Fund. The transaction fee (paid to the Fund, not to Vanguard or a third party) protects existing shareholders of the Fund from the costs associated with issuing Creation Units.

Redeeming Vanguard ETF Shares With the Issuing Fund

The redemption process is essentially the reverse of the purchase process.

. Eligible Investors. To redeem ETF Shares with the Fund, you must be an Authorized Participant or you must redeem through a broker that is an Authorized Participant.

. Creation Units. To redeem ETF Shares with the Fund, you must tender the shares in Creation Unit-size blocks.

14

. In-Kind Redemption Proceeds. Redemption proceeds will be paid in kind with a basket of securities (Redemption Securities). In most cases, the Redemption Securities you receive will be the same as the Deposit Securities required of investors purchasing Creation Units on the same day. There will be times, however, when the Deposit and Redemption Securities differ. The name and number of the Redemption Securities in the redemption basket will be available on the NSCC bulletin board. The Fund reserves the right to deliver a nonconforming redemption basket, with the consent of the redeeming investor.

. Redemption Balancing Amount. Depending on whether the NAV of a Creation Unit is higher or lower than the value of the Redemption Securities, you will either receive from or pay to the Fund a Redemption Balancing Amount in cash. If you are due to receive a Redemption Balancing Amount, the amount you actually receive will be reduced by the amount of the applicable transaction fee.

. Placement and Timing of Redemption Orders. A redemption order is deemed received on the date of transmittal if it is received by Vanguard prior to the close of regular trading on the New York Stock Exchange on that date (generally 4 p.m., Eastern time), and if all other procedures set forth in the Participation Agreement are followed.

. Clearance and Settlement of Redemption Orders. As with purchases, redemption orders will be processed either through a manual clearing process run by the DTC or through an enhanced clearing process that is available only to those DTC participants that also are participants in the Continuous Net Settlement System of the NSCC. Authorized Participants that do not use the NSCC's enhanced clearing process will be charged a higher transaction fee.

. Transaction Fee on Redemption of Creation Units. The Fund imposes a transaction fee on each redemption of Creation Units. The amount of the transaction fee on redemptions effected through the NSCC and the DTC, and on nonconforming redemptions, is the same as the fee imposed on comparable purchases (see previous section). As with the transaction fee on purchases, the transaction fee on redemptions (paid to the Fund, not to Vanguard or a third party) protects existing shareholders of the Fund from the costs associated with redeeming Creation Units.

PURCHASING AND SELLING VANGUARD ETF SHARES ON THE SECONDARY MARKET
You can buy and sell ETF Shares on the secondary market in the same way you buy and sell any other exchange-traded security--through a broker. In most cases, the broker will charge you a commission to execute the transaction. The price at which you buy or sell ETF Shares (i.e., the market price) may be more or less than the NAV of the shares. Unless imposed by your broker, there is no minimum dollar amount you must invest and no minimum number of ETF Shares you must buy.

15

CONVERSION PRIVILEGE
Owners of conventional shares issued by the Fund may convert those shares into ETF Shares of equivalent value. Please note that investors who own conventional shares through a 401(k) plan or other employer-sponsored retirement or benefit plan may not convert those shares into ETF Shares. Vanguard imposes a $50 charge on conversion transactions and reserves the right, in the future, to raise or lower the fee and to limit or terminate the conversion privilege. Your broker may charge an additional fee to process a conversion. ETF Shares, whether acquired through a conversion or purchased on the open market, cannot be converted into conventional shares of the same fund. Similarly, ETF Shares of one fund cannot be exchanged for ETF Shares of another fund.

Unless you are an Authorized Participant, you must hold ETF Shares in a brokerage account. Thus, before converting conventional shares into ETF Shares, you must have an existing, or open a new, brokerage account. To initiate a conversion of conventional shares into ETF Shares, please contact your broker.

Please note that upon converting your conventional mutual fund shares to ETF Shares, you will need to select a cost-basis method of accounting for your ETF Shares. Options for your cost-basis method will depend on your historical transaction activity in the conventional shares. Prior to conversion, please consult your tax advisor to identify your options and select a method. You should also contact your broker to ensure that the method you choose is offered by your particular brokerage firm.

Converting conventional shares into ETF Shares generally is accomplished as follows. First, after your broker notifies Vanguard of your request to convert, Vanguard will transfer your conventional shares from your account to the broker's omnibus account with Vanguard (an account maintained by the broker on behalf of all its customers who hold conventional Vanguard fund shares through the broker). After the transfer, Vanguard's records will reflect your broker, not you, as the owner of the shares. Next, your broker will instruct Vanguard to convert the appropriate number or dollar amount of conventional shares in its omnibus account into ETF Shares of equivalent value, based on the respective net asset values of the two share classes.

Your Fund's transfer agent will reflect ownership of all ETF Shares in the name of the DTC. The DTC will keep track of which ETF Shares belong to your broker, and your broker, in turn, will keep track of which ETF Shares belong to you.

Because the DTC is unable to handle fractional shares, only whole shares will be converted. For example, if you owned 300.250 conventional shares, and this was equivalent in value to 90.750 ETF Shares, the DTC account would receive 90 ETF Shares. Conventional shares worth 0.750 ETF Shares (in this example, that would be 2.481 conventional shares) would remain in the broker's omnibus account with Vanguard. Your broker then could either (1) credit your account with 0.750 ETF Shares

16

rather than 2.481 conventional shares, or (2) redeem the 2.481 conventional shares at net asset value, in which case you would receive cash in place of those shares. If your broker chooses to redeem your conventional shares, you will realize a gain or loss on the redemption that must be reported on your tax return (unless you hold the shares in an IRA or other tax-deferred account). Please consult your broker for information on how it will handle the conversion process, including whether it will impose a fee to process a conversion.

If you convert your conventional shares to ETF Shares through Vanguard Brokerage Services/(R)/ (Vanguard Brokerage), all conventional shares for which you request conversion will be converted into ETF Shares of equivalent value. Because no fractional shares will have to be sold, the transaction will be 100% tax-free. Vanguard Brokerage does not impose a conversion fee over and above the fee imposed by Vanguard.

Here are some important points to keep in mind when converting conventional shares of a Vanguard fund into ETF Shares:

. The conversion transaction is nontaxable except, as applicable, to the limited extent as previously described.

. The conversion process can take anywhere from several days to several weeks, depending on your broker. Vanguard generally will process conversion requests either on the day they are received or on the next business day. Vanguard imposes conversion blackout windows around the dates when a fund with ETF Shares declares dividends. This is necessary to prevent a shareholder from collecting a dividend from both the conventional share class currently held and also from the ETF share class into which the shares will be converted.

. Until the conversion process is complete, you will remain fully invested in a fund's conventional shares, and your investment will increase or decrease in value in tandem with the net asset value of those shares.

. During the conversion process, you will be able to liquidate all or part of your investment by instructing Vanguard or your broker (depending on who maintains records of your share ownership) to redeem your conventional shares. After the conversion process is complete, you will be able to liquidate all or part of your investment by instructing your broker to sell your ETF Shares.

FREQUENT TRADING AND MARKET-TIMING
Unlike frequent trading of a Vanguard fund's conventional (i.e., not exchange-traded) classes of shares, frequent trading of ETF Shares does not disrupt portfolio management, increase the fund's trading costs, lead to realization of capital gains, or otherwise harm fund shareholders. The vast majority of trading in ETF Shares occurs on the secondary market. Because these trades do not involve the issuing fund directly, they do not harm the fund or its shareholders. A few institutional investors are

17

authorized to purchase and redeem ETF Shares directly with the issuing fund. Because these trades are effected in-kind (i.e., for securities and not for cash), they do not cause any of the harmful effects (as previously noted) that may result from frequent cash trades. Moreover, the issuing fund imposes transaction fees on in-kind purchases and redemptions of ETF Shares to cover the custodial and other costs incurred by the fund in effecting in-kind trades. These fees increase if an investor substitutes cash in part or in whole for securities, reflecting the fact that the fund's trading costs increase in those circumstances. For these reasons, the board of trustees of each fund that issues ETF Shares has determined that it is not necessary to adopt policies and procedures to detect and deter frequent trading and market-timing of ETF Shares.

PORTFOLIO HOLDINGS

We generally post on our website at www.vanguard.com, in the HOLDINGS section of the Fund's Profile page, a detailed list of the securities held by the Fund (under PORTFOLIO HOLDINGS), as of the most recent calendar-quarter-end. This list is generally updated within 30 days after the end of each calendar quarter. Vanguard may exclude any portion of these portfolio holdings from publication when deemed in the best interest of the Fund. We also generally post the ten largest stock portfolio holdings of the Fund and the percentage of the Fund's total assets that each of these holdings represents, as of the most recent calendar-quarter-end. This list is generally updated within 15 calendar days after the end of each calendar quarter. Please consult the Fund's Statement of Additional Information or our website for a description of the policies and procedures that govern disclosure of the Fund's portfolio holdings.

PRECAUTIONARY NOTES
A PRECAUTIONARY NOTE TO RETAIL INVESTORS: The DTC or its nominee will be the registered owner of all outstanding ETF Shares. Your ownership of ETF Shares will be shown on the records of the DTC and the DTC Participant broker through which you hold the shares. Vanguard will not have any record of your ownership. Your account information will be maintained by your broker, which will provide you with account statements, confirmations of your purchases and sales of ETF Shares, and tax information. Your broker also will be responsible for distributing income and capital gains distributions and for ensuring that you receive shareholder reports and other communications from the fund whose ETF Shares you own. You will receive other services (e.g., dividend reinvestment and average cost information) only if your broker offers these services.

A PRECAUTIONARY NOTE TO PURCHASERS OF CREATION UNITS: You should be aware of certain legal risks unique to investors purchasing Creation Units directly from the issuing Fund.

18

Because new ETF Shares may be issued on an ongoing basis, a "distribution" of ETF Shares could be occurring at any time. Certain activities that you perform as a dealer could, depending on the circumstances, result in your being deemed a participant in the distribution, in a manner that could render you a statutory underwriter and subject you to the prospectus delivery and liability provisions of the Securities Act of 1933. For example, you could be deemed a statutory underwriter if you purchase Creation Units from the issuing Fund, break them down into the constituent ETF Shares, and sell those shares directly to customers, or if you choose to couple the creation of a supply of new ETF Shares with an active selling effort involving solicitation of secondary-market demand for ETF Shares. Whether a person is an underwriter depends upon all of the facts and circumstances pertaining to that person's activities, and the examples mentioned here should not be considered a complete description of all the activities that could cause you to be deemed an underwriter.

Dealers who are not "underwriters" but are participating in a distribution (as opposed to engaging in ordinary secondary-market transactions), and thus dealing with ETF Shares as part of an "unsold allotment" within the meaning of Section 4(3)(C) of the Securities Act, will be unable to take advantage of the prospectus delivery exemption provided by Section 4(3) of the Securities Act.

A PRECAUTIONARY NOTE TO SHAREHOLDERS REDEEMING CREATION UNITS: An Authorized Participant that is not a "qualified institutional buyer" as defined in Rule 144A under the Securities Act of 1933 will not be able to receive, as part of the redemption basket, restricted securities eligible for resale under Rule 144A. (For this reason, the Fund does not intend to include 144A securities in a redemption basket.)

A PRECAUTIONARY NOTE TO INVESTMENT COMPANIES: For purposes of the Investment Company Act of 1940, Vanguard ETF Shares are issued by registered investment companies, and the acquisition of such shares by other investment companies is subject to the restrictions of Section 12(d)(1) of that Act, except as permitted by an SEC exemptive order that allows registered investment companies to invest in the issuing fund beyond the limits of Section 12(d)(1), subject to certain terms and conditions.

A NOTE ON UNUSUAL CIRCUMSTANCES: Vanguard reserves the right to reject any purchase request at any time, for any reason, and without notice. Vanguard funds can stop selling shares or postpone payment of redemption proceeds at times when the New York Stock Exchange is closed or under any emergency circumstances as determined by the Securities and Exchange Commission.

19

TURNOVER RATE

Although the Fund normally seeks to invest for the long term, it may sell securities regardless of how long they have been held. Generally, index-oriented funds sell securities only in response to redemption requests or changes in the composition of a target index. The FINANCIAL HIGHLIGHTS section of this prospectus shows the Fund's turnover rate. A turnover rate of 100%, for example, would mean that the Fund had sold and replaced securities valued at 100% of its net assets within a one-year period. The average turnover rate for indexed domestic stock funds was approximately 63%, and for domestic stock funds, the average turnover rate was approximately 94%, both as reported by Morningstar, Inc., on October 31, 2007.


PLAIN TALK ABOUT TURNOVER RATE

Before investing in a mutual fund, you should review its turnover rate. This gives an indication of how transaction costs, which are not included in the fund's expense ratio, could affect the fund's future returns. In general, the greater the volume of buying and selling by the fund, the greater the impact that brokerage commissions and other transaction costs will have on its return. Also, funds with high turnover rates may be more likely to generate capital gains that must be distributed to shareholders as taxable income.

THE FUND AND VANGUARD

The Fund is a member of The Vanguard Group, a family of 37 investment companies with more than 150 funds holding assets in excess of $1.2 trillion. All of the funds that are members of The Vanguard Group share in the expenses associated with administrative services and business operations, such as personnel, office space, equipment, and advertising.

Vanguard also provides marketing services to the funds. Although shareholders do not pay sales commissions or 12b-1 distribution fees, each fund (or in the case of a fund with multiple share classes, each share class of the fund) pays its allocated share of The Vanguard Group's marketing costs.

20


PLAIN TALK/(R)/ ABOUT VANGUARD'S UNIQUE CORPORATE STRUCTURE

The Vanguard Group is truly a MUTUAL mutual fund company. It is owned jointly by the funds it oversees and thus indirectly by the shareholders in those funds. Most other mutual funds are operated by management companies that may be owned by one person, by a group of individuals, or by investors who own the management company's stock. The management fees charged by these companies include a profit component over and above the companies' cost of providing services. By contrast, Vanguard provides services to its member funds on an at-cost basis, with no profit component, which helps to keep the funds' expenses low.

INVESTMENT ADVISOR

The Vanguard Group, Inc. (Vanguard), P.O. Box 2600, Valley Forge, PA 19482, which began operations in 1975, serves as advisor to the Fund through its Quantitative Equity Group. As of October 31, 2007, Vanguard served as advisor for approximately $1 trillion in assets. Vanguard manages the Fund on an at-cost basis, subject to the supervision and oversight of the trustees and officers of the Fund.

For the fiscal year ended October 31, 2007, the advisory expenses represented an effective annual rate of 0.01% of the Fund's average net assets.

For a discussion of why the board of trustees approved the Fund's investment advisory arrangement, see the most recent semiannual report to shareholders covering the fiscal period ended April 30.

GEORGE U. SAUTER is Chief Investment Officer and Managing Director of Vanguard. As Chief Investment Officer, he is responsible for the oversight of Vanguard's Quantitative Equity and Fixed Income Groups. The investments managed by these two groups include active quantitative equity funds, equity index funds, active bond funds, index bond funds, stable value portfolios, and money market funds. Since joining Vanguard in 1987, Mr. Sauter has been a key contributor to the development of Vanguard's stock indexing and active quantitative equity investment strategies. He received his A.B. in Economics from Dartmouth College and an M.B.A. in Finance from the University of Chicago.

21


PLAIN TALK ABOUT THE FUND'S PORTFOLIO MANAGER

The manager primarily responsible for the day-to-day management of the Fund is:

Michael Perre, Principal of Vanguard. He has been with Vanguard since 1990; has managed investment portfolios since 1999; and has managed the Fund since its inception. Education: B.A., Saint Joseph's University; M.B.A., Villanova University.

The Statement of Additional Information provides information about the portfolio manager's compensation, other accounts under management, and ownership of securities in the Fund.

DIVIDENDS, CAPITAL GAINS, AND TAXES

FUND DISTRIBUTIONS
The Fund distributes to shareholders virtually all of its net income (interest and dividends less expenses) as well as any net capital gains realized from the sale of its holdings. Income dividends generally are distributed quarterly in March, June, September, and December; capital gains distributions generally occur annually in December. You can receive distributions of income or capital gains in cash, or you can have them automatically reinvested in more shares of the Fund.


PLAIN TALK ABOUT DISTRIBUTIONS

As a shareholder, you are entitled to your portion of a fund's income from interest and dividends as well as gains from the sale of investments. Income consists of both the dividends that the fund earns from any stock holdings and the interest it receives from any money market and bond investments. Capital gains are realized whenever the fund sells securities for higher prices than it paid for them. These capital gains are either short-term or long-term, depending on whether the fund held the securities for one year or less or for more than one year. You receive the fund's earnings as either a dividend or capital gains distribution.

22

REINVESTMENT OF DISTRIBUTIONS

In order to reinvest dividend and capital gains distributions, investors in the Fund's ETF Shares must hold their shares at a broker that offers a reinvestment service (either the broker's own service or a service made available by a third party, such as the broker's outside clearing firm or the Depository Trust Company). If a reinvestment service is available and used, distributions of both income and capital gains will automatically be reinvested in additional whole and fractional ETF Shares of the Fund. If a reinvestment service is not available, investors would receive their distributions in cash. To determine whether a reinvestment service is available and whether there is a commission or other charge for using this service, consult your broker.

As with all exchange-traded funds, reinvestment of dividend and capital gains distributions in additional ETF Shares will occur four business days or more after the ex-dividend date (the date when a distribution of dividends or capital gains is deducted from the price of the Fund's shares). The exact number of days depends on your broker. During that time, the amount of your distribution will not be invested in the Fund and therefore will not share in the Fund's income, gains, and losses.

BASIC TAX POINTS
Investors in taxable accounts should be aware of the following basic tax points:

. Distributions are taxable to you for federal income tax purposes, whether or not you reinvest these amounts in additional ETF Shares.

. Distributions declared in December--if paid to you by the end of January--are taxable for federal income tax purposes as if received in December.

. Any dividend and short-term capital gains distributions that you receive are taxable to you as ordinary income for federal income tax purposes. If you are an individual and meet certain holding-period requirements with respect to your Fund shares, you may be eligible for reduced federal tax rates on "qualified dividend income," if any, distributed by the Fund.

. Any distributions of net long-term capital gains are taxable to you as long-term capital gains for federal income tax purposes, no matter how long you've owned ETF Shares.

. Capital gains distributions may vary considerably from year to year as a result of the Fund's normal investment activities and cash flows.

. A sale of ETF Shares is a taxable event. This means that you may have a capital gain to report as income, or a capital loss to report as a deduction, when you complete your federal income tax return.

23

. Dividend and capital gains distributions that you receive, as well as your gains or losses from any sale of ETF Shares, may be subject to state and local income taxes.

NOTE: This prospectus provides general tax information only. If you are investing through a tax-deferred retirement account, such as an IRA, special tax rules apply. Please consult your tax advisor for detailed information about any tax consequences for you.

DAILY PRICING

The net asset value, or NAV, of the Fund's ETF Shares is calculated each business day as of the close of regular trading on the New York Stock Exchange, generally 4 p.m., Eastern time. Each share class has its own NAV, which is computed by dividing the net assets allocated to each share class by the number of Fund shares outstanding for that class.

Remember: If you buy or sell ETF Shares on the secondary market, you will pay or receive the market price, which may be higher or lower than NAV. Your transaction will be priced at NAV only if you purchase or redeem your ETF Shares in Creation Unit blocks, or if you convert your conventional fund shares into ETF Shares.

Stocks held by a Vanguard fund are valued at their market value when reliable market quotations are readily available. Certain short-term debt instruments used to manage a fund's cash are valued on the basis of amortized cost. The values of any foreign securities held by a fund are converted into U.S. dollars using an exchange rate obtained from an independent third party. The values of any mutual fund shares held by a fund are based on the NAVs of the shares. The values of any ETF or closed-end fund shares held by a fund are based on the market value of the shares.

When reliable market quotations are not readily available, securities are priced at their fair value (the amount that the owner might reasonably expect to receive upon the current sale of the security). A fund also will use fair-value pricing if the value of a security it holds has been materially affected by events occurring before the fund's pricing time but after the close of the primary markets or exchanges on which the security is traded. This most commonly occurs with foreign securities, which may trade on foreign exchanges that close many hours before the fund's pricing time. Intervening events might be company-specific (e.g., earnings report, merger announcement); country-specific (e.g., natural disaster, economic or political news, act of terrorism, interest rate change); or global. Intervening events include price movements in U.S. markets that are deemed to affect the value of foreign securities. Fair-value pricing may be used for domestic securities--for example, if (1) trading in a security is halted and does not resume before the fund's pricing time or if a security does not trade in the course of a day, and (2) the fund holds enough of the security that its price could affect the fund's NAV.

24

Fair-value prices are determined by Vanguard according to procedures adopted by the board of trustees. When fair-value pricing is employed, the prices of securities used by a fund to calculate its NAV may differ from quoted or published prices for the same securities.

Vanguard's website will show the previous day's closing NAV and closing market price for the Fund's ETF Shares. The previous day's closing market price also will be published in the business section of most major newspapers in the listing of securities traded on the AMEX.

FINANCIAL HIGHLIGHTS

The following financial highlights table is intended to help you understand the ETF Shares' financial performance for the period shown, and certain information reflects financial results for a single ETF Share. The total return in the table represents the rate that an investor would have earned during the period on an investment in the ETF Shares (assuming reinvestment of all distributions). This information has been derived from the financial statements audited by PricewaterhouseCoopers LLP, an independent registered public accounting firm, whose report--along with the Fund's financial statements--is included in the Fund's annual report to shareholders. To receive a free copy of the latest annual or semiannual report, you may access a report online at www.vanguard.com, or you may contact Vanguard by telephone or by mail.

25


PLAIN TALK ABOUT HOW TO READ THE FINANCIAL HIGHLIGHTS TABLE

The ETF Shares began the fiscal period ended October 31, 2007, with a net asset value (price) of $50.04 per share. During the period, each ETF Share earned $1.405 from investment income (interest and dividends) and $4.190 from investments that had appreciated in value or that were sold for higher prices than the Fund paid for them.

Shareholders received $1.085 per share in the form of dividend distributions.

The share price at the end of the period was $54.55, reflecting earnings of $5.595 per share and distributions of $1.085 per share. This was an increase of $4.51 per share (from $50.04 at the beginning of the period to $54.55 at the end of the period). For a shareholder who reinvested the distributions in the purchase of more shares, the total return was 11.26% for the period.

As of October 31, 2007, the ETF Shares had approximately $115 million in net assets. For the period, the annualized expense ratio was 0.25% ($2.50 per $1,000 of net assets), and the annualized net investment income amounted to 2.58% of average net assets. The Fund sold and replaced securities valued at an annualized rate of 11% of its net assets.

26

HIGH DIVIDEND YIELD ETF

 November 10, 2006/1/
 to October 31, 2007
-------------------------------------------------------------------------------
NET ASSET VALUE, BEGINNING OF PERIOD $50.04
-------------------------------------------------------------------------------
INVESTMENT OPERATIONS
-------------------------------------------------------------------------------
Net Investment Income 1.405/2/
-------------------------------------------------------------------------------
Net Realized and Unrealized Gain (Loss)
on Investments 4.190
-------------------------------------------------------------------------------
Total from Investment Operations 5.595
-------------------------------------------------------------------------------
DISTRIBUTIONS
-------------------------------------------------------------------------------
Dividends from Net Investment Income (1.085)
-------------------------------------------------------------------------------
Distributions from Realized Capital Gains --
-------------------------------------------------------------------------------
Total Distributions (1.085)
-------------------------------------------------------------------------------
NET ASSET VALUE, END OF PERIOD $54.55
-------------------------------------------------------------------------------
TOTAL RETURN 11.26%

-------------------------------------------------------------------------------
RATIOS/SUPPLEMENTAL DATA
-------------------------------------------------------------------------------
Net Assets, End of Period (Millions) $115
-------------------------------------------------------------------------------
Ratio of Expenses to Average Nets Assets 0.25%/3/
-------------------------------------------------------------------------------
Ratio of Net Investment Income to
Average Net Assets 2.58%/3/
-------------------------------------------------------------------------------
Portfolio Turnover Rate/4/ 11%
-------------------------------------------------------------------------------
1 Inception.
2 Calculated based on average shares outstanding.
3 Annualized.

4 Excludes the value of portfolio securities received or delivered as a result of in-kind purchases or redemptions of the fund's capital shares, including ETF creation units.

Vanguard, Connect with Vanguard, Plain Talk, Vanguard ETF, Vanguard Brokerage Services, and the ship logo are trademarks of The Vanguard Group, Inc. The Vanguard High Dividend Yield Index Fund and the FTSE High Dividend Yield Index are not in any way sponsored, endorsed, sold, or promoted by FTSE International Limited ("FTSE") or by the London Stock Exchange Plc ("Exchange") or by The Financial Times Limited ("FT"), and neither FTSE nor Exchange nor FT makes any warranty or representation whatsoever, expressly or impliedly, either as to the results to be obtained from the use of the FTSE High Dividend Yield Index ("Index") and/or the figure at which the said Index stands at any particular time on any particular day or otherwise. The Index is compiled and calculated by FTSE. However, neither FTSE nor Exchange nor FT shall be liable (whether in negligence or otherwise) to any person for any error in the Index, and neither FTSE or Exchange or FT shall be under any obligation to advise any person of any error therein.

"FTSE(R) " is a trademark jointly owned by the London Stock Exchange Plc and The Financial Times Limited and is used by FTSE International Limited under license. The FTSE High Dividend Yield Index is calculated by FTSE International Limited. FTSE International Limited does not sponsor, endorse, or promote the Fund; is not in any way connected to it; and does not accept any liability in relation to its issue, operation, and trading. All other marks are the exclusive property of their respective owners.

27

GLOSSARY OF INVESTMENT TERMS

ACTIVE MANAGEMENT. An investment approach that seeks to exceed the average returns of the financial markets. Active managers rely on research, market forecasts, and their own judgment and experience in selecting securities to buy and sell.

BID-ASKED SPREAD. The difference between what a buyer is willing to bid (pay) for a security and the seller's asking (offer) price.

CAPITAL GAINS DISTRIBUTION. Payment to mutual fund shareholders of gains realized on securities that a fund has sold at a profit, minus any realized losses.

CASH INVESTMENTS. Cash deposits, short-term bank deposits, and money market instruments that include U.S. Treasury bills and notes, bank certificates of deposit (CDs), repurchase agreements, commercial paper, and banker's acceptances.

CIRCUIT BREAKER. A rule that requires a halt in trading in the U.S. stock markets for a specific period of time when the Dow Jones Industrial Average declines by a specified percentage during the course of a trading day.

COMMON STOCK. A security representing ownership rights in a corporation. A stockholder is entitled to share in the company's profits, some of which may be paid out as dividends.

CREATION UNIT. A large block of a specified number of ETF Shares. Authorized Participants may purchase and redeem ETF Shares from a fund only in Creation Unit-size aggregations.

DIVIDEND DISTRIBUTION. Payment to mutual fund shareholders of income from interest or dividends generated by a fund's investments.

ETF SHARES. A class of exchange-traded shares issued by certain Vanguard mutual funds. ETF Shares can be bought and sold continuously throughout the day at market prices.

EXPENSE RATIO. The percentage of a fund's average net assets used to pay its expenses during a fiscal year. The expense ratio includes management expenses--such as advisory fees, account maintenance, reporting, accounting, legal, and other administrative expenses--and any 12b-1 distribution fees. It does not include the transaction costs of buying and selling portfolio securities.

INCEPTION DATE. The date on which the assets of a fund (or one of its share classes) are first invested in accordance with the fund's investment objective. For funds with a subscription period, the inception date is the day after that period ends. Investment performance is measured from the inception date.

INDEX. An unmanaged group of securities whose overall performance is used as a standard to measure the investment performance of a particular market.

28

INVESTMENT ADVISOR. An organization that is responsible for making the day-to-day decisions regarding a fund's investments.

MEDIAN MARKET CAP. An indicator of the size of companies in which a fund invests; the midpoint of market capitalization (market price x shares outstanding) of a fund's stocks, weighted by the proportion of the fund's assets invested in each stock. Stocks representing half of the fund's assets have market capitalizations above the median, and the rest are below it.

NET ASSET VALUE (NAV). The market value of a mutual fund's total assets, minus liabilities, divided by the number of shares outstanding. The value of a single share is also called its share value or share price.

PASSIVE MANAGEMENT. A low-cost investment strategy in which a mutual fund attempts to track--rather than outperform--a specified market benchmark or "index"; also known as indexing.

TOTAL RETURN. A percentage change, over a specified time period, in a mutual fund's net asset value, assuming the reinvestment of all distributions of dividends and capital gains.

VOLATILITY. The fluctuations in value of a mutual fund or other security. The greater a fund's volatility, the wider the fluctuations in its returns.

YIELD. Income (interest or dividends) earned by an investment, expressed as a percentage of the investment's price.


[SHIP LOGO][VANGUARD/(R)/ LOGO]

Institutional Division
P.O. Box 2900
Valley Forge, PA 19482-2900

CONNECT WITH VANGUARD/(R)/ > www.vanguard.com

FOR MORE INFORMATION
If you would like more information about Vanguard High Dividend Yield ETF, the following documents are available free upon request:

ANNUAL/SEMIANNUAL REPORTS TO SHAREHOLDERS
Additional information about the Fund's investments is available in the Fund's annual and semiannual reports to shareholders. In the annual report, you will find a discussion of the market conditions and investment strategies that significantly affected the Fund's performance during its last fiscal year.

STATEMENT OF ADDITIONAL INFORMATION (SAI)
The SAI for the issuing Fund provides more detailed information about the Fund's ETF Shares.

The current annual and semiannual reports and the SAI are incorporated by reference into (and are thus legally a part of) this prospectus.

To receive a free copy of the latest annual or semiannual report or the SAI, or to request additional information about ETF Shares, please visit www.vanguard.com or contact us as follows:

The Vanguard Group
Institutional Investor Information
P.O. Box 2900
Valley Forge, PA 19482-2900
Telephone: 866-499-8473

INFORMATION PROVIDED BY THE SECURITIES AND EXCHANGE COMMISSION (SEC) You can review and copy information about the Fund (including the SAI) at the SEC's Public Reference Room in Washington, D.C. To find out more about this public service, call the SEC at 202-551-8090. Reports and other information about the Fund are also available in the EDGAR database on the SEC's Internet site at www.sec.gov, or you can receive copies of this information, for a fee, by electronic request at the following e-mail address: publicinfo@sec.gov, or by writing the Public Reference Section, Securities and Exchange Commission, Washington, DC 20549-0102.

Fund's Investment Company Act file number:
811-07443

(C) 2008 The Vanguard Group, Inc. All rights reserved. U.S. Pat. No. 6,879,964 B2
Vanguard Marketing Corporation, Distributor.

P923 022008


PART B

VANGUARD/(R)/ WHITEHALL FUNDS

STATEMENT OF ADDITIONAL INFORMATION

FEBRUARY 22, 2008

This Statement of Additional Information is not a prospectus but should be read in conjunction with the Funds' current prospectuses (dated February 22, 2008). To obtain, without charge, a prospectus or the Funds' most recent Annual Reports to Shareholders, which contain the Funds' financial statements as hereby incorporated by reference, please call:

INVESTOR INFORMATION DEPARTMENT:
800-662-7447

TABLE OF CONTENTS

DESCRIPTION OF THE TRUST...............................................B-1
INVESTMENT POLICIES....................................................B-4
INVESTMENT LIMITATIONS.................................................B-18
SHARE PRICE............................................................B-21
PURCHASE AND REDEMPTION OF SHARES......................................B-21
MANAGEMENT OF THE FUNDS ...............................................B-24
INVESTMENT ADVISORY SERVICES...........................................B-35
PORTFOLIO TRANSACTIONS.................................................B-44
PROXY VOTING GUIDELINES ...............................................B-45
INFORMATION ABOUT THE ETF SHARE CLASS..................................B-50
FINANCIAL STATEMENTS...................................................B-56

 DESCRIPTION OF THE TRUST

ORGANIZATION

Vanguard Whitehall Funds (the Trust) was organized as a Maryland corporation in 1995 and was reorganized as a Delaware statutory trust in June 1998. Prior to its reorganization as a Delaware statutory trust, the Trust was known as Vanguard Whitehall Funds, Inc. The Trust is registered with the United States Securities and Exchange Commission (the SEC) under the Investment Company Act of 1940 (the 1940 Act) as an open-end, diversified management investment company. The Trust currently offers the following funds (and classes thereof):

 Share Classes/1/

Fund/2/ Investor ETF
---- -------- ---
Vanguard Selected Value Fund Yes No
Vanguard International Explorer Fund Yes No
Vanguard Mid-Cap Growth Fund Yes No
Vanguard High Dividend Yield Index Fund Yes Yes
1 Individually, a class; collectively, the classes.
2 Individually, a Fund; collectively, the Funds.

Vanguard International Explorer Fund was formed in connection with the reorganization of a previously existing fund, known as Schroder International Smaller Companies Fund (Schroder Fund), which was previously sponsored by Schroder Investment Management North America Inc., its investment advisor. On June 29, 2002, Vanguard International Explorer Fund acquired the assets and liabilities of the Schroder Fund in a tax-free reorganization, while maintaining the same advisor, a substantially similar investment objective, and substantially similar investment strategies and policies.

B-1

Vanguard Mid-Cap Growth Fund was formed in connection with the reorganization of a previously existing fund, known as Provident Investment Counsel Mid Cap Fund A (PIC Fund), which was previously sponsored by Provident Investment Counsel, Inc. (Provident), its investment advisor. On June 29, 2002, Vanguard Mid-Cap Growth Fund acquired the assets and liabilities of the PIC Fund in a tax-free reorganization, while maintaining the same advisor, a substantially similar investment objective, and substantially similar investment strategies and policies. Effective June 8, 2006, Provident no longer provides investment advisory services to the Fund.

The Trust has the ability to offer additional funds or classes of shares. There is no limit on the number of full and fractional shares that may be issued for a single fund or class of shares.

Throughout this document, any references to "class" apply only to the extent a Fund issues multiple classes.

Each Fund described in this Statement of Additional Information is a member fund. There are two types of Vanguard funds, member funds and non-member funds. Member funds jointly own The Vanguard Group, Inc. (Vanguard), contribute to Vanguard's capital, and receive services at cost from Vanguard pursuant to a Funds' Service Agreement. Non-member funds do not contribute to Vanguard's capital, but they do receive services pursuant to special services agreements. See "Management of the Funds" for more information.

SERVICE PROVIDERS

CUSTODIANS. The Bank of New York, One Wall Street, New York, NY 10286 (for the Selected Value Fund), JPMorgan Chase Bank, 270 Park Avenue, New York, NY 10017-2070 (for the International Explorer Fund and the High Dividend Yield Index Fund), and Citibank, N.A., 111 Wall Street, New York, NY 10005 (for the Mid-Cap Growth Fund), serve as the Funds' custodians. The custodians are responsible for maintaining the Funds' assets, keeping all necessary accounts and records of Fund assets, and appointing any foreign sub-custodians or foreign securities depositories.

INDEPENDENT REGISTERED PUBLIC ACCOUNTING FIRM. PricewaterhouseCoopers LLP, Two Commerce Square, Suite 1700, 2001 Market Street, Philadelphia, PA, 19103-7042, serves as the Funds' independent registered public accounting firm. The independent registered public accounting firm audits the Funds' annual financial statements and provides other related services.

TRANSFER AND DIVIDEND-PAYING AGENT. The Funds' transfer agent and dividend-paying agent is Vanguard, P.O. Box 2600, Valley Forge, PA 19482.

CHARACTERISTICS OF THE FUNDS' SHARES

RESTRICTIONS ON HOLDING OR DISPOSING OF SHARES. There are no restrictions on the right of shareholders to retain or dispose of a Fund's shares, other than those described in the Fund's current prospectus and elsewhere in this Statement of Additional Information or the possible future termination of the Fund or a share class. Each Fund or class may be terminated by reorganization into another mutual fund or class or by liquidation and distribution of the assets of the Fund or class. Unless terminated by reorganization or liquidation, each Fund and share class will continue indefinitely.

SHAREHOLDER LIABILITY. The Trust is organized under Delaware law, which provides that shareholders of a statutory trust are entitled to the same limitations of personal liability as shareholders of a corporation organized under Delaware law. This means that a shareholder of a Fund generally will not be personally liable for payment of the Fund's debts. Some state courts, however, may not apply Delaware law on this point. We believe that the possibility of such a situation arising is extremely remote.

DIVIDEND RIGHTS. The shareholders of each class of a Fund are entitled to receive any dividends or other distributions declared by the Fund for each such class. No shares of a Fund have priority or preference over any other shares of the Fund with respect to distributions. Distributions will be made from the assets of the Fund and will be paid ratably to all shareholders of a particular class according to the number of shares of the class held by shareholders on the record date. The amount of dividends per share may vary between separate share classes of the Fund based upon differences in the net asset values of the different classes and differences in the way that expenses are allocated between share classes pursuant to a multiple class plan.

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VOTING RIGHTS. Shareholders are entitled to vote on a matter if: (1) a shareholder vote is required under the 1940 Act; (2) the matter concerns an amendment to the Declaration of Trust that would adversely affect to a material degree the rights and preferences of the shares of a Fund or any class; (3) the trustees determine that it is necessary or desirable to obtain a shareholder vote; or (4) a certain type of merger or consolidation, share conversion, share exchange, or sale of assets is proposed. The 1940 Act requires a shareholder vote under various circumstances, including to elect or remove trustees upon the written request of shareholders representing 10% or more of a Fund's net assets and to change any fundamental policy of a Fund. Unless otherwise required by applicable law, shareholders of a Fund receive one vote for each dollar of net asset value owned on the record date, and a fractional vote for each fractional dollar of net asset value owned on the record date. However, only the shares of the Fund or class affected by a particular matter are entitled to vote on that matter. In addition, each class has exclusive voting rights on any matter submitted to shareholders that relates solely to that class, and each class has separate voting rights on any matter submitted to shareholders in which the interests of one class differ from the interests of another. Voting rights are noncumulative and cannot be modified without a majority vote.

LIQUIDATION RIGHTS. In the event that a Fund is liquidated, shareholders will be entitled to receive a pro rata share of the Fund's net assets. In the event that a class of shares is liquidated, shareholders of that class will be entitled to receive a pro rata share of the Fund's net assets that are allocated to that class. Shareholders may receive cash, securities, or a combination of the two.

PREEMPTIVE RIGHTS. There are no preemptive rights associated with the Funds' shares.

CONVERSION RIGHTS. Shareholders of the High Dividend Yield Index Fund may convert their shares into another class of sharers of the same Fund upon satisfaction of any then applicable eligibility requirements. For additional information about the conversion rights applicable to ETF Shares, please see "INFORMATION ABOUT THE ETF SHARES CLASS." There are no conversion rights associated with the Selected Value, International Explorer, and Mid-Cap Growth Funds.

REDEMPTION PROVISIONS. Each Fund's redemption provisions are described in its current prospectus and elsewhere in this Statement of Additional Information.

SINKING FUND PROVISIONS. The Funds have no sinking fund provisions.

CALLS OR ASSESSMENT. The Funds' shares, when issued, are fully paid and non-assessable.

TAX STATUS OF THE FUNDS

Each Fund intends to continue to qualify as a "regulated investment company" under Subchapter M of the Internal Revenue Code of 1986, as amended (the IRC). This special tax status means that the Fund will not be liable for federal tax on income and capital gains distributed to shareholders. In order to preserve its tax status, each Fund must comply with certain requirements. If a Fund fails to meet these requirements in any taxable year, it will be subject to tax on its taxable income at corporate rates, and all distributions from earnings and profits, including any distributions of net tax-exempt income and net long-term capital gains, will be taxable to shareholders as ordinary income. In addition, a Fund could be required to recognize unrealized gains, pay substantial taxes and interest, and make substantial distributions before regaining its tax status as a regulated investment company.

Vanguard International Explorer Fund may invest in passive foreign investment companies (PFICs). A foreign company is a PFIC if 75% or more of its gross income is passive or if 50% or more of its assets produce passive income. Capital gains on the sale of a PFIC will be deemed ordinary income regardless of how long the Fund held it. Also, the Fund may be subject to corporate income tax and an interest charge on certain dividends and capital gains earned from PFICs, whether or not they are distributed to shareholders. To avoid such tax and interest, the Fund may elect to treat PFICs as sold on the last day of the Fund's fiscal year and mark to market the gains (or losses, to the extent of previously recognized gains) and recognize ordinary income each year. Distributions from the Fund that are attributable to PFICs are characterized as ordinary income.

Dividends received and distributed by each Fund on shares of stock of domestic corporations may be eligible for the dividends-received deduction applicable to corporate shareholders. Corporations must satisfy certain requirements in order to claim the deduction. Capital gains distributed by the Funds are not eligible for the dividends-received deduction.

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INVESTMENT POLICIES

Some of the investment policies described below and in each Fund's prospectus set forth percentage limitations on a Fund's investment in, or holdings of, certain securities or other assets. Unless otherwise required by law, compliance with these policies will be determined immediately after the acquisition of such securities or assets. Subsequent changes in values, net assets, or other circumstances will not be considered when determining whether the investment complies with the Fund's investment policies and limitations.

The following policies and explanations supplement each Fund's investment objective and policies set forth in the prospectus. With respect to the different investments discussed below, a Fund may acquire such investments to the extent consistent with its investment objective and policies.

80% POLICY. Under normal circumstances, the Mid-Cap Growth Fund will invest at least 80% of its assets in common stocks of medium-size companies, and the High Dividend Yield Index Fund will invest at least 80% of its assets in the stocks that make up its target index. In applying these 80% policies, each Fund's assets include its net assets and borrowings for investment purposes.

BORROWING. A fund's ability to borrow money is limited by its investment policies and limitations, by the 1940 Act, and by applicable exemptions, no-action letters, interpretations, and other pronouncements issued from time to time by the SEC and its staff or any other regulatory authority with jurisdiction. Under the 1940 Act, a fund is required to maintain continuous asset coverage (that is, total assets including borrowings, less liabilities exclusive of borrowings) of 300% of the amount borrowed, with an exception for borrowings not in excess of 5% of the fund's total assets made for temporary or emergency purposes. Any borrowings for temporary purposes in excess of 5% of the fund's total assets must maintain continuous asset coverage. If the 300% asset coverage should decline as a result of market fluctuations or for other reasons, a fund may be required to sell some of its portfolio holdings within three days (excluding Sundays and holidays) to reduce the debt and restore the 300% asset coverage, even though it may be disadvantageous from an investment standpoint to sell securities at that time.

Borrowing will tend to exaggerate the effect on net asset value of any increase or decrease in the market value of a fund's portfolio. Money borrowed will be subject to interest costs that may or may not be recovered by earnings on the securities purchased. A fund also may be required to maintain minimum average balances in connection with a borrowing or to pay a commitment or other fee to maintain a line of credit; either of these requirements would increase the cost of borrowing over the stated interest rate.

The SEC takes the position that other transactions that have a leveraging effect on the capital structure of a fund or are economically equivalent to borrowing can be viewed as constituting a form of borrowing by the fund for purposes of the 1940 Act. These transactions can include entering into reverse repurchase agreements, engaging in mortgage-dollar-roll transactions, selling securities short (other than short sales "against-the-box"), buying and selling certain derivatives (such as futures contracts), selling (or writing) put and call options, engaging in sale-buybacks, entering into firm-commitment and standby-commitment agreements, engaging in when-issued, delayed-delivery, or forward-commitment transactions, and other trading practices that have a leveraging effect on the capital structure of a fund or are economically equivalent to borrowing (additional discussion about a number of these transactions can be found below). A borrowing transaction will not be considered to constitute the issuance of a "senior security" by a fund, and therefore such transaction will not be subject to the 300% asset coverage requirement otherwise applicable to borrowings by a fund, if the fund (1) maintains an offsetting financial position; (2) segregates liquid assets (with such liquidity determined by the advisor in accordance with procedures established by the board of trustees) equal (as determined on a daily mark-to-market basis) in value to the fund's potential economic exposure under the borrowing transaction; or (3) otherwise "covers" the transaction in accordance with applicable SEC guidance (collectively, "covers" the transaction). A fund may have to buy or sell a security at a disadvantageous time or price in order to cover a borrowing transaction. In addition, segregated assets may not be available to satisfy redemptions or for other purposes.

COMMON STOCK. Common stock represents an equity or ownership interest in an issuer. Common stock typically entitles the owner to vote on the election of directors and other important matters as well as to receive dividends on such stock. In the event an issuer is liquidated or declares bankruptcy, the claims of owners of bonds, other debt holders, and owners of preferred stock take precedence over the claims of those who own common stock.

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CONVERTIBLE SECURITIES. Convertible securities are hybrid securities that combine the investment characteristics of bonds and common stocks. Convertible securities typically consist of debt securities or preferred stock that may be converted (on a voluntary or mandatory basis) within a specified period of time (normally for the entire life of the security) into a certain amount of common stock or other equity security of the same or a different issuer at a predetermined price. Convertible securities also include debt securities with warrants or common stock attached and derivatives combining the features of debt securities and equity securities. Other convertible securities with features and risks not specifically referred to herein may become available in the future. Convertible securities involve risks similar to those of both fixed income and equity securities.

The market value of a convertible security is a function of its "investment value" and its "conversion value." A security's "investment value" represents the value of the security without its conversion feature (i.e., a nonconvertible fixed income security). The investment value may be determined by reference to its credit quality and the current value of its yield to maturity or probable call date. At any given time, investment value is dependent upon such factors as the general level of interest rates, the yield of similar nonconvertible securities, the financial strength of the issuer, and the seniority of the security in the issuer's capital structure. A security's "conversion value" is determined by multiplying the number of shares the holder is entitled to receive upon conversion or exchange by the current price of the underlying security. If the conversion value of a convertible security is significantly below its investment value, the convertible security will trade like nonconvertible debt or preferred stock and its market value will not be influenced greatly by fluctuations in the market price of the underlying security. In that circumstance, the convertible security takes on the characteristics of a bond, and its price moves in the opposite direction from interest rates. Conversely, if the conversion value of a convertible security is near or above its investment value, the market value of the convertible security will be more heavily influenced by fluctuations in the market price of the underlying security. In that case, the convertible security's price may be as volatile as that of common stock. Because both interest rate and market movements can influence its value, a convertible security generally is not as sensitive to interest rates as a similar fixed income security, nor is it as sensitive to changes in share price as its underlying equity security. Convertible securities are often rated below investment-grade or are not rated, and are generally subject to a high degree of credit risk.

While all markets are prone to change over time, the generally high rate at which convertible securities are retired (through mandatory or scheduled conversions by issuers or voluntary redemptions by holders) and replaced with newly issued convertibles may cause the convertible securities market to change more rapidly than other markets. For example, a concentration of available convertible securities in a few economic sectors could elevate the sensitivity of the convertible securities market to the volatility of the equity markets and to the specific risks of those sectors. Moreover, convertible securities with innovative structures, such as mandatory conversion securities and equity-linked securities, have increased the sensitivity of the convertible securities market to the volatility of the equity markets and to the special risks of those innovations, which may include risks different from, and possibly greater than, those associated with traditional convertible securities.

DEBT SECURITIES. A debt security, sometimes called a fixed income security, is a security consisting of a certificate or other evidence of a debt (secured or unsecured) on which the issuing company or governmental body promises to pay the holder thereof a fixed, variable, or floating rate of interest for a specified length of time, and to repay the debt on the specified maturity date. Some debt securities, such as zero coupon bonds, do not make regular interest payments but are issued at a discount to their principal or maturity value. Debt securities include a variety of fixed income obligations, including, but not limited to, corporate bonds, government securities, municipal securities, convertible securities, mortgage-backed securities, and asset-backed securities. Debt securities include investment-grade securities, non-investment-grade securities, and unrated securities. Debt securities are subject to a variety of risks, such as interest rate risk, income risk, call/prepayment risk, inflation risk, credit risk, and (in the case of foreign securities) country risk and currency risk. The reorganization of an issuer under the federal bankruptcy laws may result in the issuer's debt securities being cancelled without repayment, repaid only in part, or repaid in part or in whole through an exchange thereof for any combination of cash, debt securities, convertible securities, equity securities, or other instruments or rights in respect of the same issuer or a related entity.

DEBT SECURITIES -- NON-INVESTMENT-GRADE SECURITIES. Non-investment-grade securities, also referred to as "high-yield securities" or "junk bonds," are debt securities that are rated lower than the four highest rating categories by a nationally recognized statistical rating organization (for example, lower than Baa3 by Moody's Investors Service, Inc. or lower than BBB- by Standard & Poor's) or are determined to be of comparable quality by the fund's advisor. These securities are generally considered to be, on balance, predominantly speculative with respect to capacity to pay interest

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and repay principal in accordance with the terms of the obligation and will generally involve more credit risk than securities in the investment-grade categories. Investment in these securities generally provides greater income and increased opportunity for capital appreciation than investments in higher quality securities, but they also typically entail greater price volatility and principal and income risk.

Analysis of the creditworthiness of issuers of high-yield securities may be more complex than for issuers of investment-grade securities. Thus, reliance on credit ratings in making investment decisions entails greater risks for high-yield securities than for investment-grade debt securities. The success of a fund's advisor in managing high-yield securities is more dependent upon its own credit analysis than is the case with investment-grade securities.

Some high-yield securities are issued by smaller, less-seasoned companies, while others are issued as part of a corporate restructuring, such as an acquisition, merger, or leveraged buyout. Companies that issue high-yield securities are often highly leveraged and may not have available to them more traditional methods of financing. Therefore, the risk associated with acquiring the securities of such issuers generally is greater than is the case with investment-grade securities. Some high-yield securities were once rated as investment-grade but have been downgraded to junk bond status because of financial difficulties experienced by their issuers.

The market values of high-yield securities tend to reflect individual issuer developments to a greater extent than do investment-grade securities, which in general react to fluctuations in the general level of interest rates. High-yield securities also tend to be more sensitive to economic conditions than are investment-grade securities. A projection of an economic downturn or of a sustained period of rising interest rates, for example, could cause a decline in junk bond prices because the advent of a recession could lessen the ability of a highly leveraged company to make principal and interest payments on its debt securities. If an issuer of high-yield securities defaults, in addition to risking payment of all or a portion of interest and principal, a fund investing in such securities may incur additional expenses to seek recovery.

The secondary market on which high-yield securities are traded may be less liquid than the market for investment-grade securities. Less liquidity in the secondary trading market could adversely affect the ability of a fund to sell a high-yield security or the price at which a fund could sell a high-yield security, and could adversely affect the daily net asset value of fund shares. When secondary markets for high-yield securities are less liquid than the market for investment-grade securities, it may be more difficult to value the securities because such valuation may require more research, and elements of judgment may play a greater role in the valuation because there is less reliable, objective data available.

Except as otherwise provided in a fund's prospectus, if a credit-rating agency changes the rating of a portfolio security held by a fund, the fund may retain the portfolio security if the advisor deems it in the best interests of shareholders.

DEPOSITARY RECEIPTS. Depositary receipts are securities that evidence ownership interests in a security or a pool of securities that have been deposited with a "depository." Depositary receipts may be sponsored or unsponsored and include American Depositary Receipts (ADRs), European Depositary Receipts (EDRs), and Global Depositary Receipts (GDRs). For ADRs, the depository is typically a U.S. financial institution and the underlying securities are issued by a foreign issuer. For other depositary receipts, the depository may be a foreign or a U.S. entity, and the underlying securities may have a foreign or a U.S. issuer. Depositary receipts will not necessarily be denominated in the same currency as their underlying securities. Generally, ADRs are issued in registered form, denominated in U.S. dollars, and designed for use in the U.S. securities markets. Other depositary receipts, such as GDRs and EDRs, may be issued in bearer form and denominated in other currencies, and are generally designed for use in securities markets outside the U.S. Although the two types of depositary receipt facilities (unsponsored or sponsored) are similar, there are differences regarding a holder's rights and obligations and the practices of market participants. A depository may establish an unsponsored facility without participation by (or acquiescence of) the underlying issuer; typically, however, the depository requests a letter of non-objection from the underlying issuer prior to establishing the facility. Holders of unsponsored depositary receipts generally bear all the costs of the facility. The depository usually charges fees upon the deposit and withdrawal of the underlying securities, the conversion of dividends into U.S. dollars or other currency, the disposition of non-cash distributions, and the performance of other services. The depository of an unsponsored facility frequently is under no obligation to distribute shareholder communications received from the underlying issuer or to pass through voting rights to depositary receipt holders with respect to the underlying securities.

Sponsored depositary receipt facilities are created in generally the same manner as unsponsored facilities, except that sponsored depositary receipts are established jointly by a depository and the underlying issuer through a deposit agreement. The deposit agreement sets out the rights and responsibilities of the underlying issuer, the depository, and the depositary receipt holders. With sponsored facilities, the underlying issuer typically bears some of the costs of the

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depositary receipts (such as dividend payment fees of the depository), although most sponsored depositary receipts holders may bear costs such as deposit and withdrawal fees. Depositories of most sponsored depositary receipts agree to distribute notices of shareholder meetings, voting instructions, and other shareholder communications and information to the depositary receipt holders at the underlying issuer's request.

For purposes of a fund's investment policies, investments in depositary receipts will be deemed to be investments in the underlying securities. Thus, a depositary receipt representing ownership of common stock will be treated as common stock. Depositary receipts do not eliminate all of the risks associated with directly investing in the securities of foreign issuers.

DERIVATIVES. A derivative is a financial instrument that has a value that is based on--or "derived from"--the values of other assets, reference rates, or indexes. Derivatives may relate to a wide variety of underlying references, such as commodities, stocks, bonds, interest rates, currency exchange rates, and related indexes. Derivatives include futures contracts and options on futures contracts, forward-commitment transactions, options on securities, caps, floors, collars, swap agreements, and other financial instruments. Some derivatives, such as futures contracts and certain options, are traded on U.S. commodity and securities exchanges, while other derivatives, such as swap agreements, are privately negotiated and entered into in the over-the-counter (OTC) market. The risks associated with the use of derivatives are different from, and possibly greater than, the risks associated with investing directly in the securities, assets, or market indexes on which the derivatives are based. Derivatives are used by some investors for speculative purposes. Derivatives also may be used for a variety of purposes that do not constitute speculation, such as hedging, risk management, seeking to stay fully invested, seeking to reduce transaction costs, seeking to simulate an investment in equity or debt securities or other investments, seeking to add value by using derivatives to more efficiently implement portfolio positions when derivatives are favorably priced relative to equity or debt securities or other investments, and for other purposes. There is no assurance that any derivatives strategy used by a fund's advisor will succeed. The counterparties to the funds' derivatives will not be considered the issuers thereof for certain purposes of the 1940 Act and the IRC, although such derivatives may qualify as securities or investments under such laws. The funds' advisors, however, will monitor and adjust, as appropriate, the funds' credit risk exposure to derivative counterparties.

Derivative products are highly specialized instruments that require investment techniques and risk analyses different from those associated with stocks, bonds, and other traditional investments. The use of a derivative requires an understanding not only of the underlying instrument but also of the derivative itself, without the benefit of observing the performance of the derivative under all possible market conditions.

The use of derivatives generally involves the risk that a loss may be sustained as a result of the insolvency or bankruptcy of the other party to the contract (usually referred to as a "counterparty") or the failure of the counterparty to make required payments or otherwise comply with the terms of the contract. Additionally, the use of credit derivatives can result in losses if a fund's advisor does not correctly evaluate the creditworthiness of the issuer on which the credit derivative is based.

Derivatives may be subject to liquidity risk, which exists when a particular derivative is difficult to purchase or sell. If a derivative transaction is particularly large or if the relevant market is illiquid (as is the case with many OTC derivatives), it may not be possible to initiate a transaction or liquidate a position at an advantageous time or price.

Derivatives may be subject to pricing or "basis" risk, which exists when a particular derivative becomes extraordinarily expensive relative to historical prices or the prices of corresponding cash market instruments. Under certain market conditions, it may not be economically feasible to initiate a transaction or liquidate a position in time to avoid a loss or take advantage of an opportunity.

Because many derivatives have a leverage component, adverse changes in the value or level of the underlying asset, reference rate, or index can result in a loss substantially greater than the amount invested in the derivative itself. Certain derivatives have the potential for unlimited loss, regardless of the size of the initial investment. A derivative transaction will not be considered to constitute the issuance of a "senior security" by a fund, and therefore such transaction will not be subject to the 300% asset coverage requirement otherwise applicable to borrowings by a fund, if the fund covers the transaction in accordance with the requirements described above under the heading "Borrowing."

Like most other investments, derivative instruments are subject to the risk that the market value of the instrument will change in a way detrimental to a fund's interest. A fund bears the risk that its advisor will incorrectly forecast future market trends or the values of assets, reference rates, indexes, or other financial or economic factors in establishing derivative positions for the fund. If the advisor attempts to use a derivative as a hedge against, or as a substitute for, a portfolio investment, the fund will be exposed to the risk that the derivative will have or will develop imperfect or no

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correlation with the portfolio investment. This could cause substantial losses for the fund. Although hedging strategies involving derivative instruments can reduce the risk of loss, they can also reduce the opportunity for gain or even result in losses by offsetting favorable price movements in other fund investments. Many derivatives, in particular OTC derivatives, are complex and often valued subjectively. Improper valuations can result in increased cash payment requirements to counterparties or a loss of value to a fund.

EXCHANGE-TRADED FUNDS. A fund may purchase shares of exchange-traded funds (ETFs), including ETF shares issued by other Vanguard funds. Typically, a fund would purchase ETF shares for the same reason it would purchase (and as an alternative to purchasing) futures contracts: to obtain exposure to all or a portion of the stock or bond market. ETF shares enjoy several advantages over futures. Depending on the market, the holding period, and other factors, ETF shares can be less costly and more tax-efficient than futures. In addition, ETF shares can be purchased for smaller sums, offer exposure to market sectors and styles for which there is no suitable or liquid futures contract, and do not involve leverage.

An investment in an ETF generally presents the same primary risks as an investment in a conventional fund (i.e., one that is not exchange traded) that has the same investment objective, strategies, and policies. The price of an ETF can fluctuate within a wide range, and a fund could lose money investing in an ETF if the prices of the securities owned by the ETF go down. In addition, ETFs are subject to the following risks that do not apply to conventional funds: (1) the market price of the ETF's shares may trade at a discount to their net asset value; (2) an active trading market for an ETF's shares may not develop or be maintained; or (3) trading of an ETF's shares may be halted if the listing exchange's officials deem such action appropriate, the shares are de-listed from the exchange, or the activation of market-wide "circuit breakers" (which are tied to large decreases in stock prices) halts stock trading generally.

Most ETFs are investment companies. Therefore, a fund's purchases of ETF shares generally are subject to the limitations on a fund's investments in other investment companies, which are described below under the heading "Other Investment Companies."

Vanguard ETF(TM) *Shares are exchange-traded shares that represent an interest in an investment portfolio held by Vanguard funds. A fund's investments in Vanguard ETF Shares are also generally subject to the limitations described under the heading "Other Investment Companies, " except as provided by an exemption granted by the SEC that permits registered investment companies to invest in a Vanguard fund that issues ETF Shares beyond the limits of Section 12(d)(1) of the 1940 Act, subject to certain terms and conditions.


* U.S. Pat. No. 6,879,964 B2.

FOREIGN SECURITIES. Typically, foreign securities are considered to be equity or debt securities issued by entities organized, domiciled, or with a principal executive office outside the United States, such as foreign corporations and governments. Securities issued by certain companies organized outside the United States may not be deemed to be foreign securities if the company's principal operations are conducted from the United States or when the company's equity securities trade principally on a U.S. stock exchange. Foreign securities may trade in U.S. or foreign securities markets. A fund may make foreign investments either directly by purchasing foreign securities or indirectly by purchasing depositary receipts or depositary shares of similar instruments (depositary receipts) for foreign securities. Depositary receipts are securities that are listed on exchanges or quoted in OTC markets in one country but represent shares of issuers domiciled in another country. Direct investments in foreign securities may be made either on foreign securities exchanges or in the OTC markets. Investing in foreign securities involves certain special risk considerations that are not typically associated with investing in securities of U.S. companies or governments.

Because foreign issuers are not generally subject to uniform accounting, auditing, and financial reporting standards and practices comparable to those applicable to U.S. issuers, there may be less publicly available information about certain foreign issuers than about U.S. issuers. Evidence of securities ownership may be uncertain in many foreign countries. As a result, there is a risk that a fund's trade details could be incorrectly or fraudulently entered at the time of the transaction, resulting in a loss to the fund. Securities of foreign issuers are generally less liquid than securities of comparable U.S. issuers. In certain countries, there is less government supervision and regulation of stock exchanges, brokers, and listed companies than in the United States. In addition, with respect to certain foreign countries, there is the possibility of expropriation or confiscatory taxation, political or social instability, war, terrorism, nationalization, limitations on the removal of funds or other assets, or diplomatic developments that could affect U.S. investments in those countries. Although an advisor will endeavor to achieve most favorable execution costs for a fund's portfolio transactions in foreign securities under the circumstances, commissions (and other transaction costs) are generally higher than those on U.S. securities. In addition, it is expected that the expenses for custodian arrangements of the

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fund's foreign securities will be somewhat greater than the expenses for a fund that invests primarily in domestic securities. Certain foreign governments levy withholding taxes against dividend and interest income from foreign securities. Although in some countries a portion of these taxes is recoverable by the fund, the non-recovered portion of foreign withholding taxes will reduce the income received from the companies making up a fund.

The value of the foreign securities held by a fund that are not U.S. dollar-denominated may be significantly affected by changes in currency exchange rates. The U.S. dollar value of a foreign security generally decreases when the value of the U.S. dollar rises against the foreign currency in which the security is denominated and tends to increase when the value of the U.S. dollar falls against such currency (as discussed below, a fund may attempt to hedge its currency risks). In addition, the value of fund assets may be affected by losses and other expenses incurred in converting between various currencies in order to purchase and sell foreign securities, and by currency restrictions, exchange control regulation, currency devaluations, and political and economic developments.

FOREIGN SECURITIES -- EMERGING MARKET RISK. Investing in emerging market countries involves certain risks not typically associated with investing in the United States, and imposes risks greater than, or in addition to, risks of investing in more developed foreign countries. These risks include, but are not limited to, the following: greater risks of nationalization or expropriation of assets or confiscatory taxation; currency devaluations and other currency exchange rate fluctuations; greater social, economic, and political uncertainty and instability (including amplified risk of war and terrorism); more substantial government involvement in the economy; less government supervision and regulation of the securities markets and participants in those markets; controls on foreign investment and limitations on repatriation of invested capital and on the fund's ability to exchange local currencies for U.S. dollars; unavailability of currency hedging techniques in certain emerging market countries; the fact that companies in emerging market countries may be smaller, less seasoned, and newly organized companies; the difference in, or lack of, auditing and financial reporting standards, which may result in unavailability of material information about issuers; the risk that it may be more difficult to obtain and/or enforce a judgment in a court outside the United States; and greater price volatility, substantially less liquidity, and significantly smaller market capitalization of securities markets. Also, any change in the leadership or politics of emerging market countries, or the countries that exercise a significant influence over those countries, may halt the expansion of or reverse the liberalization of foreign investment policies now occurring and adversely affect existing investment opportunities. Furthermore, high rates of inflation and rapid fluctuations in inflation rates have had, and may continue to have, negative effects on the economies and securities markets of certain emerging market countries.

FOREIGN SECURITIES -- FOREIGN CURRENCY TRANSACTIONS. The value in U.S. dollars of a fund's non-dollar-denominated foreign securities may be affected favorably or unfavorably by changes in foreign currency exchange rates and exchange control regulations, and the fund may incur costs in connection with conversions between various currencies. To seek to minimize the impact of such factors on net asset values, a fund may engage in foreign currency transactions in connection with its investments in foreign securities. A fund will not speculate in foreign currency exchange and will enter into foreign currency transactions only to attempt to "hedge" the currency risk associated with investing in foreign securities. Although such transactions tend to minimize the risk of loss that would result from a decline in the value of the hedged currency, they also may limit any potential gain that might result should the value of such currency increase.

Currency exchange transactions may be conducted either on a spot (i.e., cash) basis at the rate prevailing in the currency exchange market, or through forward contracts to purchase or sell foreign currencies. A forward currency contract involves an obligation to purchase or sell a specific currency at a future date, which may be any fixed number of days from the date of the contract agreed upon by the parties, at a price set at the time of the contract. These contracts are entered into with large commercial banks or other currency traders who are participants in the interbank market. Currency exchange transactions also may be effected through the use of swap agreements or other derivatives. Currency exchange transactions may be considered borrowings. A currency exchange transaction will not be considered to constitute the issuance of a "senior security" by a fund for purposes of the 1940 Act, and therefore such transaction will not be subject to the 300% asset coverage requirement otherwise applicable to borrowings by a fund, if the fund covers the transaction in accordance with the requirements, described above under the heading "Borrowing."

By entering into a forward contract for the purchase or sale of foreign currency involved in underlying security transactions, a fund may be able to protect itself against part or all of the possible loss between trade and settlement dates for that purchase or sale resulting from an adverse change in the relationship between the U.S. dollar and such foreign currency. This practice is sometimes referred to as "transaction hedging." In addition, when the advisor reasonably believes that a particular foreign currency may suffer a substantial decline against the U.S. dollar, a fund may enter into a forward contract to sell an amount of foreign currency approximating the value of some or all of its portfolio

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securities denominated in such foreign currency. This practice is sometimes referred to as "portfolio hedging." Similarly, when the advisor reasonably believes that the U.S. dollar may suffer a substantial decline against a foreign currency, a fund may enter into a forward contract to buy that foreign currency for a fixed dollar amount.

A fund may also attempt to hedge its foreign currency exchange rate risk by engaging in currency futures, options, and "cross-hedge" transactions. In cross-hedge transactions, a fund holding securities denominated in one foreign currency will enter into a forward currency contract to buy or sell a different foreign currency (one that the advisor reasonably believes generally tracks the currency being hedged with regard to price movements). The advisor may select the tracking (or substitute) currency rather than the currency in which the security is denominated for various reasons, including in order to take advantage of pricing or other opportunities presented by the tracking currency or because the market for the tracking currency is more liquid or more efficient. Such cross-hedges are expected to help protect a fund against an increase or decrease in the value of the U.S. dollar against certain foreign currencies.

A fund may hold a portion of its assets in bank deposits denominated in foreign currencies, so as to facilitate investment in foreign securities as well as protect against currency fluctuations and the need to convert such assets into U.S. dollars (thereby also reducing transaction costs). To the extent these monies are converted back into U.S. dollars, the value of the assets so maintained will be affected favorably or unfavorably by changes in foreign currency exchange rates and exchange control regulations.

The forecasting of currency market movement is extremely difficult, and whether any hedging strategy will be successful is highly uncertain. Moreover, it is impossible to forecast with precision the market value of portfolio securities at the expiration of a foreign currency forward contract. Accordingly, a fund may be required to buy or sell additional currency on the spot market (and bear the expense of such transaction) if its advisor's predictions regarding the movement of foreign currency or securities markets prove inaccurate. In addition, the use of cross-hedging transactions may involve special risks, and may leave a fund in a less advantageous position than if such a hedge had not been established. Because foreign currency forward contracts are privately negotiated transactions, there can be no assurance that a fund will have flexibility to roll-over a foreign currency forward contract upon its expiration if it desires to do so. Additionally, there can be no assurance that the other party to the contract will perform its services thereunder.

FOREIGN SECURITIES -- FOREIGN INVESTMENT COMPANIES. Some of the countries in which a fund may invest may not permit, or may place economic restrictions on, direct investment by outside investors. Fund investments in such countries may be permitted only through foreign government approved or authorized investment vehicles, which may include other investment companies. Such investments may be made through registered or unregistered closed-end investment companies that invest in foreign securities. Investing through such vehicles may involve frequent or layered fees or expenses and may also be subject to the limitations on, and the risks of, a fund's investments in other investment companies, which are described below under the heading "Other Investment Companies."

FUTURES CONTRACTS AND OPTIONS ON FUTURES CONTRACTS. Futures contracts and options on futures contracts are derivatives. A futures contract is a standardized agreement between two parties to buy or sell at a specific time in the future a specific quantity of a commodity at a specific price. The commodity may consist of an asset, a reference rate, or an index. A security futures contract relates to the sale of a specific quantity of shares of a single equity security or a narrow-based securities index. The value of a futures contract tends to increase and decrease in tandem with the value of the underlying commodity. The buyer of a futures contract enters into an agreement to purchase the underlying commodity on the settlement date and is said to be "long" the contract. The seller of a futures contract enters into an agreement to sell the underlying commodity on the settlement date and is said to be "short" the contract. The price at which a futures contract is entered into is established either in the electronic marketplace or by open outcry on the floor of an exchange between exchange members acting as traders or brokers. Open futures contracts can be liquidated or closed out by physical delivery of the underlying commodity or payment of the cash settlement amount on the settlement date, depending on the terms of the particular contract. Some financial futures contracts (such as security futures) provide for physical settlement at maturity. Other financial futures contracts (such as those relating to interest rates, foreign currencies, and broad-based securities indexes) generally provide for cash settlement at maturity. In the case of cash settled futures contracts, the cash settlement amount is equal to the difference between the final settlement price on the last trading day of the contract and the price at which the contract was entered into. Most futures contracts, however, are not held until maturity but instead are "offset" before the settlement date through the establishment of an opposite and equal futures position.

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The purchaser or seller of a futures contract is not required to deliver or pay for the underlying commodity unless the contract is held until the settlement date. However, both the purchaser and seller are required to deposit "initial margin" with a futures commission merchant (FCM) when the futures contract is entered into. Initial margin deposits are typically calculated as a percentage of the contract's market value. If the value of either party's position declines, that party will be required to make additional "variation margin" payments to settle the change in value on a daily basis. This process is known as "marking-to-market." A futures transaction will not be considered to constitute the issuance of a "senior security" by a fund for purposes of the 1940 Act, and such transaction will not be subject to the 300% asset coverage requirement otherwise applicable to borrowings by a fund, if the fund covers the transaction in accordance with the requirements described above under the heading "Borrowing."

An option on a futures contract (or futures option) conveys the right, but not the obligation, to purchase (in the case of a call option) or sell (in the case of a put option) a specific futures contract at a specific price (called the "exercise" or "strike" price) any time before the option expires. The seller of an option is called an option writer. The purchase price of an option is called the premium. The potential loss to an option buyer is limited to the amount of the premium plus transaction costs. This will be the case, for example, if the option is held and not exercised prior to its expiration date. Generally, an option writer sells options with the goal of obtaining the premium paid by the option buyer. If an option sold by an option writer expires without being exercised, the writer retains the full amount of the premium. The option writer, however, has unlimited economic risk because its potential loss, except to the extent offset by the premium received when the option was written, is equal to the amount the option is "in-the-money" at the expiration date. A call option is in-the-money if the value of the underlying futures contract exceeds the exercise price of the option. A put option is in-the-money if the exercise price of the option exceeds the value of the underlying futures contract. Generally, any profit realized by an option buyer represents a loss for the option writer.

A fund that takes the position of a writer of a futures option is required to deposit and maintain initial and variation margin with respect to the option, as described above in the case of futures contracts. A futures option transaction will not be considered to constitute the issuance of a "senior security" by a fund for purposes of the 1940 Act, and such transaction will not be subject to the 300% asset coverage requirement otherwise applicable to borrowings by a fund, if the fund covers the transaction in accordance with the requirements described above under the heading "Borrowing."

Each fund intends to comply with Rule 4.5 of the Commodity Futures Trading Commission, under which a mutual fund is conditionally excluded from the definition of the term "commodity pool operator." A fund will only enter into futures contracts and futures options that are standardized and traded on a U.S. or foreign exchange, board of trade, or similar entity, or quoted on an automated quotation system.

FUTURES CONTRACTS AND OPTIONS ON FUTURES CONTRACTS -- RISKS. The risk of loss in trading futures contracts and in writing futures options can be substantial, because of the low margin deposits required, the extremely high degree of leverage involved in futures and options pricing, and the potential high volatility of the futures markets. As a result, a relatively small price movement in a futures position may result in immediate and substantial loss (or gain) to the investor. For example, if at the time of purchase, 10% of the value of the futures contract is deposited as margin, a subsequent 10% decrease in the value of the futures contract would result in a total loss of the margin deposit, before any deduction for the transaction costs, if the account were then closed out. A 15% decrease would result in a loss equal to 150% of the original margin deposit if the contract were closed out. Thus, a purchase or sale of a futures contract, and the writing of a futures option, may result in losses in excess of the amount invested in the position. In the event of adverse price movements, a fund would continue to be required to make daily cash payments to maintain its required margin. In such situations, if the fund has insufficient cash, it may have to sell portfolio securities to meet daily margin requirements (and segregation requirements, if applicable) at a time when it may be disadvantageous to do so. In addition, on the settlement date, a fund may be required to make delivery of the instruments underlying the futures positions it holds.

A fund could suffer losses if it is unable to close out a futures contract or a futures option because of an illiquid secondary market. Futures contracts and futures options may be closed out only on an exchange that provides a secondary market for such products. However, there can be no assurance that a liquid secondary market will exist for any particular futures product at any specific time. Thus, it may not be possible to close a futures or option position. Moreover, most futures exchanges limit the amount of fluctuation permitted in futures contract prices during a single trading day. The daily limit establishes the maximum amount that the price of a futures contract may vary either up or down from the previous day's settlement price at the end of a trading session. Once the daily limit has been reached in a particular type of contract, no trades may be made on that day at a price beyond that limit. The daily limit governs only

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price movement during a particular trading day and therefore does not limit potential losses, because the limit may prevent the liquidation of unfavorable positions. Futures contract prices have occasionally moved to the daily limit for several consecutive trading days with little or no trading, thereby preventing prompt liquidation of future positions and subjecting some futures traders to substantial losses. The inability to close futures and options positions also could have an adverse impact on the ability to hedge a portfolio investment or to establish a substitute for a portfolio investment. Treasury futures are generally not subject to such daily limits.

A fund bears the risk that its advisor will incorrectly predict future market trends. If the advisor attempts to use a futures contract or a futures option as a hedge against, or as a substitute for, a portfolio investment, the fund will be exposed to the risk that the futures position will have or will develop imperfect or no correlation with the portfolio investment. This could cause substantial losses for the fund. While hedging strategies involving futures products can reduce the risk of loss, they can also reduce the opportunity for gain or even result in losses by offsetting favorable price movements in other fund investments.

A fund could lose margin payments it has deposited with its FCM, if, for example, the FCM breaches its agreement with the fund or becomes insolvent or goes into bankruptcy. In that event, the fund may be entitled to return of margin owed to it only in proportion to the amount received by the FCM's other customers, potentially resulting in losses to the fund.

INTERFUND BORROWING AND LENDING. The SEC has granted an exemption permitting the Vanguard funds to participate in Vanguard's interfund lending program. This program allows the Vanguard funds to borrow money from and lend money to each other for temporary or emergency purposes. The program is subject to a number of conditions, including, among other things, the requirement that: (1) no fund may borrow or lend money through the program unless it receives a more favorable interest rate than is typically available from a bank for a comparable transaction; (2) no equity, taxable bond, or money market fund may loan money if the loan would cause its aggregate outstanding loans through the program to exceed 5%, 7.5%, or 10%, respectively, of its net assets at the time of the loan; and (3) a fund's interfund loans to any one fund shall not exceed 5% of the lending fund's net assets. In addition, a Vanguard fund may participate in the program only if and to the extent that such participation is consistent with the fund's investment objective and investment policies. The boards of trustees of the Vanguard funds are responsible for overseeing the interfund lending program. Any delay in repayment to a lending fund could result in a lost investment opportunity or additional borrowing costs.

OPTIONS. An option is a derivative. An option on a security (or index) is a contract that gives the holder of the option, in return for the payment of a "premium," the right, but not the obligation, to buy from (in the case of a call option) or sell to (in the case of a put option) the writer of the option the security underlying the option (or the cash value of the index) at a specified exercise price prior to the expiration date of the option. The writer of an option on a security has the obligation upon exercise of the option (1) to deliver the underlying security upon payment of the exercise price (in the case of a call option) or (2) to pay the exercise price upon delivery of the underlying security (in the case of a put option). The writer of an option on an index has the obligation upon exercise of the option to pay an amount equal to the cash value of the index minus the exercise price, multiplied by the specified multiplier for the index option. The multiplier for an index option determines the size of the investment position the option represents. Unlike exchange-traded options, which are standardized with respect to the underlying instrument, expiration date, contract size, and strike price, the terms of OTC options (options not traded on exchanges) generally are established through negotiation with the other party to the option contract. While this type of arrangement allows the purchaser or writer greater flexibility to tailor an option to its needs, OTC options generally involve greater credit risk than exchange-traded options, which are guaranteed by the clearing organization of the exchanges where they are traded.

The buyer (or holder) of an option is said to be "long" the option, while the seller (or writer) of an option is said to be "short" the option. A call option grants to the holder the right to buy (and obligates the writer to sell) the underlying security at the strike price. A put option grants to the holder the right to sell (and obligates the writer to buy) the underlying security at the strike price. The purchase price of an option is called the "premium." The potential loss to an option buyer is limited to the amount of the premium plus transaction costs. This will be the case if the option is held and not exercised prior to its expiration date. Generally, an option writer sells options with the goal of obtaining the premium paid by the option buyer, but that person could also seek to profit from an anticipated rise or decline in option prices. If an option sold by an option writer expires without being exercised, the writer retains the full amount of the premium. The option writer, however, has unlimited economic risk because its potential loss, except to the extent offset by the premium received when the option was written, is equal to the amount the option is "in-the-money" at the expiration date. A call option is in-the-money if the value of the underlying position exceeds the exercise price of the option. A put option is in--

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the-money if the exercise price of the option exceeds the value of the underlying position. Generally, any profit realized by an option buyer represents a loss for the option writer. The writing of an option will not be considered to constitute the issuance of a "senior security" by a fund for purposes of the 1940 Act, and such transaction will not be subject to the 300% asset coverage requirement otherwise applicable to borrowings by a fund, if the fund covers the transaction in accordance with the requirements, and described above under the heading "Borrowing."

If a trading market in particular options were to become unavailable, investors in those options (such as the funds) would be unable to close out their positions until trading resumes, and they may be faced with substantial losses if the value of the underlying interest moves adversely during that time. Even if the market were to remain available, there may be times when options prices will not maintain their customary or anticipated relationships to the prices of the underlying interests and related interests. Lack of investor interest, changes in volatility, or other factors or conditions might adversely affect the liquidity, efficiency, continuity, or even the orderliness of the market for particular options.

A fund bears the risk that its advisor will not accurately predict future market trends. If the advisor attempts to use an option as a hedge against, or as a substitute for, a portfolio investment, the fund will be exposed to the risk that the option will have or will develop imperfect or no correlation with the portfolio investment. This could cause substantial losses for the fund. While hedging strategies involving options can reduce the risk of loss, they can also reduce the opportunity for gain or even result in losses by offsetting favorable price movements in other fund investments. Many options, in particular OTC options, are complex and often valued based on subjective factors. Improper valuations can result in increased cash payment requirements to counterparties or a loss of value to a fund.

OTHER INVESTMENT COMPANIES. A fund may invest in other investment companies to the extent permitted by applicable law or SEC exemption. Under Section 12(d)(1) of the 1940 Act, a fund generally may invest up to 10% of its assets in shares of investment companies and up to 5% of its assets in any one investment company, as long as no investment represents more than 3% of the voting stock of an acquired investment company. The 1940 Act and related rules provide certain exemptions from these restrictions. If a fund invests in other investment companies, shareholders will bear not only their proportionate share of the fund's expenses (including operating expenses and the fees of the advisor), but also, indirectly, the similar expenses of the underlying investment companies. Shareholders would also be exposed to the risks associated not only to the investments of the fund but also to the portfolio investments of the underlying investment companies. Certain types of investment companies, such as closed-end investment companies, issue a fixed number of shares that typically trade on a stock exchange or over-the-counter at a premium or discount to their net asset value. Others are continuously offered at net asset value but also may be traded on the secondary market.

PREFERRED STOCK. Preferred stock represents an equity or ownership interest in an issuer. Preferred stock normally pays dividends at a specified rate and has precedence over common stock in the event the issuer is liquidated or declares bankruptcy. However, in the event an issuer is liquidated or declares bankruptcy, the claims of owners of bonds take precedence over the claims of those who own preferred and common stock. Preferred stock, unlike common stock, often has a stated dividend rate payable from the corporation's earnings. Preferred stock dividends may be cumulative or non-cumulative, participating, or auction rate. "Cumulative" dividend provisions require all or a portion of prior unpaid dividends to be paid before dividends can be paid to the issuer's common stock. "Participating" preferred stock may be entitled to a dividend exceeding the stated dividend in certain cases. If interest rates rise, the fixed dividend on preferred stocks may be less attractive, causing the price of such stocks to decline. Preferred stock may have mandatory sinking fund provisions, as well as provisions allowing the stock to be called or redeemed, which can limit the benefit of a decline in interest rates. Preferred stock is subject to many of the risks to which common stock and debt securities are subject.

REPURCHASE AGREEMENTS. A repurchase agreement is an agreement under which a fund acquires a fixed income security (generally a security issued by the U.S. government or an agency thereof, a banker's acceptance, or a certificate of deposit) from a commercial bank, broker, or dealer, and simultaneously agrees to resell such security to the seller at an agreed upon price and date (normally, the next business day). Because the security purchased constitutes collateral for the repurchase obligation, a repurchase agreement may be considered a loan that is collateralized by the security purchased. The resale price reflects an agreed upon interest rate effective for the period the instrument is held by a fund and is unrelated to the interest rate on the underlying instrument. In these transactions, the securities acquired by a fund (including accrued interest earned thereon) must have a total value in excess of the value of the repurchase agreement and be held by a custodian bank until repurchased. In addition, the investment advisor will monitor a fund's repurchase agreement transactions generally and will evaluate the creditworthiness of any bank, broker, or dealer party to a

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repurchase agreement relating to a fund. The aggregate amount of any such agreements is not limited except to the extent required by law.

The use of repurchase agreements involves certain risks. One risk is the seller's ability to pay the agreed-upon repurchase price on the repurchase date. If the seller defaults, the fund may incur costs in disposing of the collateral, which would reduce the amount realized thereon. If the seller seeks relief under the bankruptcy laws, the disposition of the collateral may be delayed or limited. For example, if the other party to the agreement becomes insolvent and subject to liquidation or reorganization under the bankruptcy or other laws, a court may determine that the underlying security is collateral for a loan by the fund not within its control and therefore the realization by the fund on such collateral may be automatically stayed. Finally, it is possible that the fund may not be able to substantiate its interest in the underlying security and may be deemed an unsecured creditor of the other party to the agreement.

RESTRICTED AND ILLIQUID SECURITIES. Illiquid securities are securities that cannot be sold or disposed of in the ordinary course of business within seven business days at approximately the value at which they are being carried on a fund's books. Illiquid securities may include a wide variety of investments, such as: (1) repurchase agreements maturing in more than seven days; (2) OTC options contracts and certain other derivatives (including certain swap agreements); (3) fixed time deposits that are not subject to prepayment or do not provide for withdrawal penalties upon prepayment (other than overnight deposits); (4) participation interests in loans; (5) municipal lease obligations; (6) commercial paper issued pursuant to Section 4(2) of the Securities Act of 1933 (the 1933 Act); and (7) securities whose disposition is restricted under the federal securities laws. Illiquid securities include restricted, privately placed securities that, under the federal securities laws, generally may be resold only to qualified institutional buyers. If a substantial market develops for a restricted security (or other illiquid investment) held by a fund, it may be treated as a liquid security, in accordance with procedures and guidelines approved by the board of trustees. This generally includes securities that are unregistered, that can be sold to qualified institutional buyers in accordance with Rule 144A under the 1933 Act, or that are exempt from registration under the 1933 Act, such as commercial paper. While a fund's advisor monitors the liquidity of restricted securities on a daily basis, the board of trustees oversees and retains ultimate responsibility for the advisor's liquidity determinations. Several factors that the trustees consider in monitoring these decisions include the valuation of a security, the availability of qualified institutional buyers, brokers, and dealers that trade in the security, and the availability of information about the security's issuer.

REVERSE REPURCHASE AGREEMENTS. In a reverse repurchase agreement, a fund sells a security to another party, such as a bank or broker-dealer, in return for cash and agrees to repurchase that security at an agreed-upon price and time. Under a reverse repurchase agreement, the fund continues to receive any principal and interest payments on the underlying security during the term of the agreement. Reverse repurchase agreements involve the risk that the market value of securities retained by the fund may decline below the repurchase price of the securities sold by the fund that it is obligated to repurchase. A reverse repurchase agreement may be considered a borrowing transaction for purposes of the 1940 Act. A reverse repurchase agreement transaction will not be considered to constitute the issuance of a "senior security" by a fund, and such transaction will not be subject to the 300% asset coverage requirement otherwise applicable to borrowings by a fund, if the fund covers the transaction in accordance with the requirements described above under the heading "Borrowing." A fund will enter into reverse repurchase agreements only with parties whose creditworthiness has been reviewed and found satisfactory by the advisor.

SECURITIES LENDING. A fund may lend its investment securities to qualified institutional investors (typically brokers, dealers, banks, or other financial institutions) who may need to borrow securities in order to complete certain transactions, such as covering short sales, avoiding failures to deliver securities, or completing arbitrage operations. By lending its investment securities, a fund attempts to increase its net investment income through the receipt of interest on the securities lent. Any gain or loss in the market price of the securities lent that might occur during the term of the loan would be for the account of the fund. If the borrower defaults on its obligation to return the securities lent because of insolvency or other reasons, a fund could experience delays and costs in recovering the securities lent or in gaining access to the collateral. These delays and costs could be greater for foreign securities. If a fund is not able to recover the securities lent, a fund may sell the collateral and purchase a replacement investment in the market. The value of the collateral could decrease below the value of the replacement investment by the time the replacement investment is purchased. Cash received as collateral through loan transactions may be invested in other eligible securities. Investing this cash subjects that investment to market appreciation or depreciation.

The terms and the structure and the aggregate amount of securities loans must be consistent with the 1940 Act, and the rules or interpretations of the SEC thereunder. These provisions limit the amount of securities a fund may lend to

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33 1/3% of the fund's total assets, and require that (1) the borrower pledge and maintain with the fund collateral consisting of cash, an irrevocable letter of credit or securities issued or guaranteed by the U.S. government having at all times not less than 100% of the value of the securities lent; (2) the borrower add to such collateral whenever the price of the securities lent rises (i.e., the borrower "marks-to-market" on a daily basis); (3) the loan be made subject to termination by the fund at any time; and (4) the fund receive reasonable interest on the loan (which may include the fund's investing any cash collateral in interest bearing short-term investments), any distribution on the lent securities, and any increase in their market value. Loan arrangements made by each fund will comply with all other applicable regulatory requirements, including the rules of the New York Stock Exchange, which presently require the borrower, after notice, to redeliver the securities within the normal settlement time of three business days. The advisor will consider the creditworthiness of the borrower, among other things, in making decisions with respect to the lending of securities, subject to oversight by the board of trustees. At the present time, the SEC does not object if an investment company pays reasonable negotiated fees in connection with lent securities, so long as such fees are set forth in a written contract and approved by the investment company's trustees. In addition, voting rights pass with the lent securities, but if a fund has knowledge that a material event will occur affecting securities on loan, and in respect of which the holder of the securities will be entitled to vote or consent, the lender must be entitled to call the loaned securities in time to vote or consent.

SWAP AGREEMENTS. A swap agreement is a derivative. A swap agreement is an agreement between two parties (counterparties) to exchange payments at specified dates (periodic payment dates) on the basis of a specified amount (notional amount) with the payments calculated with reference to a specified asset, reference rate, or index.

Examples of swap agreements include, but are not limited to, interest rate swaps, credit default swaps, equity swaps, commodity swaps, foreign currency swaps, index swaps, and total return swaps. Most swap agreements provide that when the periodic payment dates for both parties are the same, payments are netted, and only the net amount is paid to the counterparty entitled to receive the net payment. Consequently, a fund's current obligations (or rights) under a swap agreement will generally be equal only to the net amount to be paid or received under the agreement, based on the relative values of the positions held by each counterparty. Swap agreements allow for a wide variety of transactions. For example, fixed rate payments may be exchanged for floating rate payments; U.S. dollar-denominated payments may be exchanged for payments denominated in a different currency; and payments tied to the price of one asset, reference rate, or index may be exchanged for payments tied to the price of another asset, reference rate, or index.

An option on a swap agreement, also called a "swaption," is an option that gives the buyer the right, but not the obligation, to enter into a swap on a future date in exchange for paying a market-based "premium." A receiver swaption gives the owner the right to receive the total return of a specified asset, reference rate, or index. A payer swaption gives the owner the right to pay the total return of a specified asset, reference rate, or index. Swaptions also include options that allow an existing swap to be terminated or extended by one of the counterparties.

The use of swap agreements by a fund entails certain risks, which may be different from, or possibly greater than, the risks associated with investing directly in the securities and other investments that are the referenced asset for the swap agreement. Swaps are highly specialized instruments that require investment techniques, risk analyses, and tax planning different from those associated with stocks, bonds, and other traditional investments. The use of a swap requires an understanding not only of the referenced asset, reference rate, or index but also of the swap itself, without the benefit of observing the performance of the swap under all possible market conditions.

Swap agreements may be subject to liquidity risk, which exists when a particular swap is difficult to purchase or sell. If a swap transaction is particularly large or if the relevant market is illiquid (as is the case with many OTC swaps), it may not be possible to initiate a transaction or liquidate a position at an advantageous time or price, which may result in significant losses. In addition, swap transactions may be subject to a fund's limitation on investments in illiquid securities.

Swap agreements may be subject to pricing risk, which exists when a particular swap becomes extraordinarily expensive (or cheap) relative to historical prices or the prices of corresponding cash market instruments. Under certain market conditions, it may not be economically feasible to initiate a transaction or liquidate a position in time to avoid a loss or take advantage of an opportunity or to realize the intrinsic value of the swap agreement.

Because some swap agreements have a leverage component, adverse changes in the value or level of the underlying asset, reference rate, or index can result in a loss substantially greater than the amount invested in the swap itself. Certain swaps have the potential for unlimited loss, regardless of the size of the initial investment. A leveraged swap transaction will not be considered to constitute the issuance of a "senior security" by a fund, and such transaction will not be subject

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to the 300% asset coverage requirement otherwise applicable to borrowings by a fund, if the fund covers the transaction in accordance with the requirements and described above under the heading "Borrowing."

Like most other investments, swap agreements are subject to the risk that the market value of the instrument will change in a way detrimental to a fund's interest. A fund bears the risk that its advisor will not accurately forecast future market trends or the values of assets, reference rates, indexes, or other economic factors in establishing swap positions for the fund. If the advisor attempts to use a swap as a hedge against, or as a substitute for, a portfolio investment, the fund will be exposed to the risk that the swap will have or will develop imperfect or no correlation with the portfolio investment. This could cause substantial losses for the fund. While hedging strategies involving swap instruments can reduce the risk of loss, they can also reduce the opportunity for gain or even result in losses by offsetting favorable price movements in other fund investments. Many swaps, in particular OTC swaps, are complex and often valued subjectively. Improper valuations can result in increased cash payment requirements to counterparties or a loss of value to a fund.

The use of a swap agreement also involves the risk that a loss may be sustained as a result of the insolvency or bankruptcy of the counterparty or the failure of the counterparty to make required payments or otherwise comply with the terms of the agreement. Additionally, the use of credit default swaps can result in losses if a fund's advisor does not correctly evaluate the creditworthiness of the issuer on which the credit swap is based.

The swaps market is a relatively new market and is largely unregulated. It is possible that developments in the swaps market, including potential government regulation, could adversely affect a fund's ability to terminate existing swap agreements or to realize amounts to be received under such agreements.

TAX MATTERS -- FEDERAL TAX TREATMENT OF FUTURES CONTRACTS. A fund is required for federal income tax purposes to recognize for each taxable year its net unrealized gains and losses on certain futures contracts as of the end of the year as well as those actually realized during the year. In these cases, any gain or loss recognized with respect to a futures contract is considered to be 60% long-term capital gain or loss and 40% short-term capital gain or loss, without regard to the holding period of the contract. Gains and losses on certain other futures contracts (primarily non-U.S. futures contracts) are not recognized until the contracts are closed and are treated as long-term or short-term, depending on the holding period of the contract. Sales of futures contracts that are intended to hedge against a change in the value of securities held by a fund may affect the holding period of such securities and, consequently, the nature of the gain or loss on such securities upon disposition. A fund may be required to defer the recognition of losses on one position, such as futures contracts, to the extent of any unrecognized gains on a related offsetting position held by the fund.

In order for a fund to continue to qualify for federal income tax treatment as a regulated investment company, at least 90% of its gross income for a taxable year must be derived from qualifying income; i.e., dividends, interest, income derived from loans of securities, gains from the sale of securities or of foreign currencies, or other income derived with respect to the fund's business of investing in securities or currencies. It is anticipated that any net gain recognized on futures contracts will be considered qualifying income for purposes of the 90% requirement.

A fund will distribute to shareholders annually any net capital gains that have been recognized for federal income tax purposes on futures transactions. Such distributions will be combined with distributions of capital gains realized on the fund's other investments and shareholders will be advised on the nature of the distributions.

TAX MATTERS -- FEDERAL TAX TREATMENT OF NON-U.S. TRANSACTIONS. Special rules govern the federal income tax treatment of certain transactions denominated in a currency other than the U.S. dollar or determined by reference to the value of one or more currencies other than the U.S. dollar. The types of transactions covered by the special rules include the following: (1) the acquisition of, or becoming the obligor under, a bond or other debt instrument (including, to the extent provided in Treasury regulations, preferred stock); (2) the accruing of certain trade receivables and payables; and (3) the entering into or acquisition of any forward contract, futures contract, option, or similar financial instrument if such instrument is not marked to market. The disposition of a currency other than the U.S. dollar by a taxpayer whose functional currency is the U.S. dollar is also treated as a transaction subject to the special currency rules. However, foreign currency-related regulated futures contracts and non-equity options are generally not subject to the special currency rules if they are or would be treated as sold for their fair market value at year-end under the marking-to-market rules applicable to other futures contracts unless an election is made to have such currency rules apply. With respect to transactions covered by the special rules, foreign currency gain or loss is calculated separately from any gain or loss on the underlying transaction and is normally taxable as ordinary income or loss. A taxpayer may elect to treat as capital gain or loss foreign currency gain or loss arising from certain identified forward contracts, futures contracts, and options that are capital assets in the hands of the taxpayer and which are not part of a straddle. The Treasury Department issued

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regulations under which certain transactions subject to the special currency rules that are part of a "section 988 hedging transaction" (as defined in the IRC and the Treasury regulations) will be integrated and treated as a single transaction or otherwise treated consistently for purposes of the IRC. Any gain or loss attributable to the foreign currency component of a transaction engaged in by a fund that is not subject to the special currency rules (such as foreign equity investments other than certain preferred stocks) will be treated as capital gain or loss and will not be segregated from the gain or loss on the underlying transaction. It is anticipated that some of the non-U.S. dollar-denominated investments and foreign currency contracts a fund may make or enter into will be subject to the special currency rules described above.

TAX MATTERS -- FOREIGN TAX CREDIT. Foreign governments may withhold taxes on dividends and interest paid with respect to foreign securities held by a fund. Foreign governments may also impose taxes on other payments or gains with respect to foreign securities. If, at the close of its fiscal year, more than 50% of a fund's total assets are invested in securities of foreign issuers, the fund may elect to pass through foreign taxes paid, and thereby allow shareholders to take a deduction or, if they meet certain holding period requirements, a tax credit on their tax returns. If shareholders do not meet the holding period requirements, they may still be entitled to a deduction for certain gains that were actually distributed by the fund, but will also show the amount of the available offsetting credit or deduction.

TEMPORARY INVESTMENTS. A fund may take temporary defensive positions that are inconsistent with the fund's normal fundamental or non-fundamental investment policies and strategies in response to adverse or unusual market, economic, political, or other conditions as determined by the advisor. Such positions could include, but are not limited to, investments in (1) highly liquid short-term fixed income securities issued by or on behalf of municipal or corporate issuers, obligations of the U.S. government and its agencies, commercial paper, and bank certificates of deposit; (2) repurchase agreements involving any such securities; and (3) other money market instruments. There is no limit on the extent to which the fund may take temporary defensive positions. In taking such positions, the fund may fail to achieve its investment objective.

WARRANTS. Warrants are instruments that give the holder the right, but not the obligation, to buy an equity security at a specific price for a specific period of time. Changes in the value of a warrant do not necessarily correspond to changes in the value of its underlying security. The price of a warrant may be more volatile than the price of its underlying security, and a warrant may offer greater potential for capital appreciation as well as capital loss. Warrants do not entitle a holder to dividends or voting rights with respect to the underlying security and do not represent any rights in the assets of the issuing company. A warrant ceases to have value if it is not exercised prior to its expiration date. These factors can make warrants more speculative than other types of investments.

WHEN-ISSUED, DELAYED-DELIVERY, AND FORWARD-COMMITMENT TRANSACTIONS. When-issued, delayed-delivery, and forward-commitment transactions involve a commitment to purchase or sell specific securities at a predetermined price or yield in which payment and delivery take place after the customary settlement period for that type of security. Typically, no interest accrues to the purchaser until the security is delivered. When purchasing securities pursuant to one of these transactions, payment for the securities is not required until the delivery date. However, the purchaser assumes the rights and risks of ownership, including the risks of price and yield fluctuations and the risk that the security will not be issued as anticipated. When a fund has sold a security pursuant to one of these transactions, the fund does not participate in further gains or losses with respect to the security. If the other party to a delayed-delivery transaction fails to deliver or pay for the securities, the fund could miss a favorable price or yield opportunity or suffer a loss. A fund may renegotiate a when-issued or forward-commitment transaction and may sell the underlying securities before delivery, which may result in capital gains or losses for the fund. When-issued, delayed-delivery, and forward-commitment transactions will not be considered to constitute the issuance of a "senior security" by a fund, and such transaction will not be subject to the 300% asset coverage requirement otherwise applicable to borrowings by the fund, if the fund covers the transaction in accordance with the requirements described above under the heading "Borrowing."

INVESTMENT POLICY RELATING TO THE SALE OF INVESTOR SHARES OF VANGUARD SELECTED VALUE FUND IN JAPAN. The Fund may borrow (as defined under Japanese law and the rules of the Japanese Securities Dealers Association) money for temporary or emergency purposes only in an amount not to exceed 10% of the Fund's net assets.

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INVESTMENT LIMITATIONS

VANGUARD SELECTED VALUE FUND

The Fund is subject to the following FUNDAMENTAL investment limitations, which cannot be changed in any material way without the approval of the holders of a majority of the Fund's shares. For these purposes, a "majority" of shares means shares representing the lesser of: (1) 67% or more of the Fund's net assets voted, so long as shares representing more than 50% of the Fund's net assets are present or represented by proxy; or (2) more than 50% of the Fund's net assets.

BORROWING. The Fund may borrow money for temporary or emergency purposes only in an amount not to exceed 15% of the Fund's net assets. The Fund may borrow money through banks, reverse repurchase agreements, or Vanguard's interfund lending program only, and must comply with all applicable regulatory conditions. The Fund may not make any additional investments whenever its outstanding borrowings exceed 5% of its net assets.

COMMODITIES. The Fund may not invest in commodities, except that the Fund may invest in stock futures contracts, stock options, and options on stock futures contracts. No more than 5% of the Fund's total assets may be used as initial margin deposit for futures contracts. Additionally, no more than 20% of the Fund's total assets may be invested in swap agreements at any time.

DIVERSIFICATION. With respect to 75% of its total assets, the Fund may not: (1) purchase more than 10% of the outstanding voting securities of any one issuer; or (2) purchase securities of any issuer if, as a result, more than 5% of the Fund's total assets would be invested in that issuer's securities. This limitation does not apply to obligations of the U.S. government or its agencies or instrumentalities.

ILLIQUID SECURITIES. The Fund may not acquire any security if, as a result, more than 15% of its net assets would be invested in securities that are illiquid.

INDUSTRY CONCENTRATION. The Fund may not invest more than 25% of its total assets in any one industry.

INVESTING FOR CONTROL. The Fund may not invest in a company for purposes of controlling its management.

INVESTMENT OBJECTIVE. The investment objective of the Fund may not be materially changed without a shareholder vote.

LOANS. The Fund may not lend money to any person except by purchasing fixed income securities that are publicly distributed, by lending its portfolio securities, or through Vanguard's interfund lending program.

MARGIN. The Fund may not purchase securities on margin or sell securities short, except as permitted by the Fund's investment policies relating to commodities.

PLEDGING ASSETS. The Fund may not pledge, mortgage, or hypothecate more than 15% of its net assets.

PUTS AND CALLS. The Fund may not purchase or sell put options or call options, except as permitted by the Fund's investment policies relating to commodities.

REAL ESTATE. The Fund may not invest directly in real estate, although it may invest in securities of companies that deal in real estate and bonds secured by real estate.

SENIOR SECURITIES. The Fund may not issue senior securities, except in compliance with the 1940 Act.

UNDERWRITING. The Fund may not act as an underwriter of another issuer's securities, except to the extent that the Fund may be deemed to be an underwriter within the meaning of the 1933 Act, in connection with the purchase and sale of portfolio securities.

VANGUARD INTERNATIONAL EXPLORER FUND

The Fund is subject to the following FUNDAMENTAL investment limitations, which cannot be changed in any material way without the approval of the holders of a majority of the Fund's shares. For these purposes, a "majority" of shares means shares representing the lesser of: (1) 67% or more of the Fund's net assets voted, so long as shares representing more than 50% of the Fund's net assets are present or represented by proxy; or (2) more than 50% of the Fund's net assets.

BORROWING. The Fund may borrow money or issue senior securities only as permitted under the 1940 Act.

COMMODITIES. The Fund may not purchase or sell physical commodities unless acquired as a result of ownership of securities or other instruments. This limitation shall not prevent the Fund from purchasing, selling, or entering into securities or other instruments backed by physical commodities, foreign currencies, foreign currency forward contracts,

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foreign currency options, futures contracts, options on futures contracts, swap agreements, or other derivative instruments, subject to compliance with applicable provisions of the federal securities and commodities laws.

DIVERSIFICATION. The Fund may not change its classification as a "management company" or its subclassification as an "open-end company" and as a "diversified company" as each such term is defined in the 1940 Act.

INDUSTRY CONCENTRATION. The Fund may not concentrate its investments in a particular industry or group of industries, within the meaning of the 1940 Act.

LOANS. The Fund may make loans only as permitted under the 1940 Act.

REAL ESTATE. The Fund may not purchase or sell real estate unless acquired as a result of ownership of securities or other instruments. This limitation shall not prevent the Fund from investing in securities or other instruments backed by real estate or securities issued by any company engaged in the real estate business.

SENIOR SECURITIES. The Fund may borrow money or issue senior securities only as permitted under the 1940 Act.

UNDERWRITING. The Fund may not act as an underwriter of another issuer's securities, except to the extent that the Fund may be deemed to be an underwriter within the meaning of the 1933 Act, in connection with the purchase and sale of portfolio securities.

The Fund has adopted the following operational, NON-FUNDAMENTAL investment limitations:

BORROWING. The Fund may borrow money for temporary or emergency purposes only in an amount not to exceed 15% of the Fund's net assets. The Fund may borrow money through banks, reverse repurchase agreements, or Vanguard's interfund lending program only, and must comply with all applicable regulatory conditions. The Fund may not make any additional investments whenever its outstanding borrowings exceed 5% of its net assets.

COMMODITIES. No more than 5% of the Fund's total assets may be used as initial margin deposit for futures contracts and no more than 20% of the Fund's total assets may be obligated under futures contracts, options, swap agreements, or other derivative instruments at any time.

ILLIQUID SECURITIES. The Fund may not acquire any security if, as a result, more than 15% of its net assets would be invested in securities that are illiquid.

INDUSTRY CONCENTRATION. The fundamental investment limitation governing concentration of the Fund's investments in a particular industry or group of industries shall not be deemed to (1) limit the ability of the Fund to invest in securities issued by any company or group of companies located in any country or group of countries, or (2) limit the ability of the Fund to invest in obligations issued or guaranteed by any government, or any agency or instrumentality of any government, of any country.

LOANS. The Fund may not lend money to any person except by purchasing fixed income securities that are publicly distributed, by lending its portfolio securities, or through Vanguard's interfund lending program.

MARGIN. The Fund may not purchase securities on margin or sell securities short, except as permitted by the Fund's investment policies relating to commodities.

PLEDGING ASSETS. The Fund may not pledge, mortgage, or hypothecate more than 15% of its net assets.

PUTS AND CALLS. The Fund may not purchase or sell put options or call options, except as permitted by the Fund's investment policies relating to commodities.

VANGUARD MID-CAP GROWTH FUND

The Fund is subject to the following FUNDAMENTAL investment limitations, which cannot be changed in any material way without the approval of the holders of a majority of the Fund's shares. For these purposes, a "majority" of shares means shares representing the lesser of: (1) 67% or more of the Fund's net assets voted, so long as shares representing more than 50% of the Fund's net assets are present or represented by proxy; or (2) more than 50% of the Fund's net assets.

BORROWING. The Fund may borrow money or issue senior securities only as permitted under the 1940 Act.

COMMODITIES. The Fund may not purchase or sell physical commodities unless acquired as a result of ownership of securities or other instruments. This limitation shall not prevent the Fund from purchasing, selling, or entering into securities or other instruments backed by physical commodities, foreign currencies, foreign currency forward contracts,

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foreign currency options, futures contracts, options on futures contracts, swap agreements, or other derivative instruments, subject to compliance with applicable provisions of the federal securities and commodities laws.

DIVERSIFICATION. The Fund may not change its classification as a "management company" or its subclassification as an "open-end company" and as a "diversified company" as each such term is defined in the 1940 Act.

INDUSTRY CONCENTRATION. The Fund may not concentrate its investments in a particular industry or group of industries, within the meaning of the 1940 Act.

LOANS. The Fund may make loans only as permitted under the 1940 Act.

REAL ESTATE. The Fund may not purchase or sell real estate unless acquired as a result of ownership of securities or other instruments. This limitation shall not prevent the Fund from investing in securities or other instruments backed by real estate or securities issued by any company engaged in the real estate business.

SENIOR SECURITIES. The Fund may borrow money or issue senior securities only as permitted under the 1940 Act.

UNDERWRITING. The Fund may not act as an underwriter of another issuer's securities, except to the extent that the Fund may be deemed to be an underwriter within the meaning of the 1933 Act, in connection with the purchase and sale of portfolio securities.

The Fund has adopted the following operational, NON-FUNDAMENTAL investment limitations:

BORROWING. The Fund may borrow money for temporary or emergency purposes only in an amount not to exceed 15% of the Fund's net assets. The Fund may borrow money through banks, reverse repurchase agreements, or Vanguard's interfund lending program only, and must comply with all applicable regulatory conditions. The Fund may not make any additional investments whenever its outstanding borrowings exceed 5% of its net assets.

COMMODITIES. No more than 5% of the Fund's total assets may be used as initial margin deposit for futures contracts and no more than 20% of the Fund's total assets may be obligated under futures contracts, options, swap agreements, or other derivative instruments at any time.

ILLIQUID SECURITIES. The Fund may not acquire any security if, as a result, more than 15% of its net assets would be invested in securities that are illiquid.

INDUSTRY CONCENTRATION. The fundamental investment limitation governing concentration of the Fund's investments in a particular industry or group of industries shall not be deemed to (1) limit the ability of the Fund to invest in securities issued by any company or group of companies located in any country or group of countries, or (2) limit the ability of the Fund to invest in obligations issued or guaranteed by any government, or any agency or instrumentality of any government, of any country.

INVESTING FOR CONTROL. The Fund may not invest in a company for purposes of controlling its management.

INVESTMENT COMPANIES. The Fund may invest in any other investment company only as permitted under the 1940 Act.

LOANS. The Fund may not lend money to any person except by purchasing fixed income securities that are publicly distributed, by lending its portfolio securities, or through Vanguard's interfund lending program.

MARGIN. The Fund may not purchase securities on margin or sell securities short, except as permitted by the Fund's investment policies relating to commodities.

PLEDGING ASSETS. The Fund may not pledge, mortgage, or hypothecate more than 15% of its net assets.

PURCHASES ON MARGIN. The Fund may not purchase securities on margin.

PUTS AND CALLS. The Fund may not purchase or sell put options or call options, except as permitted by the Fund's investment policies relating to commodities.

SHORT SALES. The Fund may not sell securities short.

VANGUARD HIGH DIVIDEND YIELD INDEX FUND

The Fund is subject to the following FUNDAMENTAL investment limitations, which cannot be changed in any material way without the approval of the holders of a majority of the Fund's shares. For these purposes, a "majority" of shares means shares representing the lesser of: (1) 67% or more of the Fund's net assets voted, so long as shares representing more than 50% of the Fund's net assets are present or represented by proxy; or (2) more than 50% of the Fund's net assets.

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BORROWING. The Fund may borrow money or issue senior securities only as permitted under the 1940 Act.

COMMODITIES. The Fund may not purchase or sell physical commodities unless acquired as a result of ownership of securities or other instruments. This limitation shall not prevent the Fund from purchasing, selling, or entering into securities or other instruments backed by physical commodities, foreign currencies, foreign currency forward contracts, foreign currency options, futures contracts, options on futures contracts, swap agreements, or other derivative instruments, subject to compliance with applicable provisions of the federal securities and commodities laws.

DIVERSIFICATION. The Fund may not change its classification as a "management company" or its subclassification as an "open-end company" and as a "diversified company" as each such term is defined in the 1940 Act.

INDUSTRY CONCENTRATION. The Fund may not concentrate its investments in a particular industry or group of industries, within the meaning of the 1940 Act.

LOANS. The Fund may make loans only as permitted under the 1940 Act.

REAL ESTATE. The Fund may not purchase or sell real estate unless acquired as a result of ownership of securities or other instruments. This limitation shall not prevent the Fund from investing in securities or other instruments backed by real estate or securities issued by any company engaged in the real estate business.

SENIOR SECURITIES. The Fund may borrow money or issue senior securities only as permitted under the 1940 Act.

UNDERWRITING. The Fund may not act as an underwriter of another issuer's securities, except to the extent that the Fund may be deemed to be an underwriter within the meaning of the 1933 Act, in connection with the purchase and sale of portfolio securities.

ALL FUNDS

The above-mentioned investment limitations for each Fund are generally considered at the time investment securities are purchased. All investment limitations must comply with applicable regulatory requirements. If a percentage restriction is adhered to at the time the investment is made, a later increase in percentage resulting from a change in the market value of assets will not constitute a violation of such restriction.

None of these limitations prevents the Funds from having an ownership interest in Vanguard. As a part owner of Vanguard, each Fund may own securities issued by Vanguard, make loans to Vanguard, and contribute to Vanguard's costs or other financial requirements. See "Management of the Funds" for more information.

SHARE PRICE

Multiple-class funds do not have a share price. Rather, each class has a share price, called its net asset value, or NAV, that is calculated each business day as of the close of regular trading on the New York Stock Exchange (the Exchange), generally 4 p.m., Eastern time. NAV per share for the Selected Value, International Explorer, and Mid-Cap Growth Funds is computed by dividing the net assets of the Fund by the number of Fund shares outstanding. NAV per share for the High Dividend Yield Index Fund is computed by dividing the net assets allocated to each share class by the number of Fund shares outstanding for that class.

The Exchange typically observes the following holidays: New Year's Day, Martin Luther King, Jr. Day, Presidents' Day (Washington's Birthday), Good Friday, Memorial Day, Independence Day, Labor Day, Thanksgiving Day, and Christmas Day. Although each Fund expects the same holidays to be observed in the future, the Exchange may modify its holiday schedule or hours of operation at any time.

PURCHASE AND REDEMPTION OF SHARES

PURCHASE OF SHARES (OTHER THAN ETF SHARES)

The purchase price of shares of each Fund is the NAV per share next determined after the purchase request is received in good order, as defined in the Fund's prospectus.

EXCHANGE OF SECURITIES FOR SHARES OF A FUND (OTHER THAN ETF SHARES). In certain circumstances, shares of a fund may be purchased "in kind" (i.e., in exchange for securities, rather than for cash). The securities tendered as part of an in-kind purchase must be included in the index tracked by an index fund and must have a total market value of $1 million

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or more. In addition, each position must have a market value of $10,000 or more. Such securities also must be liquid securities that are not restricted as to transfer and have a value that is readily ascertainable as evidenced by a listing on the American Stock Exchange, the New York Stock Exchange, or Nasdaq. Securities accepted by the fund will be valued, as set forth in the fund's prospectus, as of the time of the next determination of NAV after such acceptance. Shares of each fund are issued at the NAV determined as of the same time. All dividend, subscription, or other rights that are reflected in the market price of accepted securities at the time of valuation become the property of the fund and must be delivered to the fund by the investor upon receipt from the issuer. A gain or loss for federal income tax purposes would be realized by the investor upon the exchange, depending upon the cost of the securities tendered.

A fund will not accept securities in exchange for its shares unless: (1) such securities are, at the time of the exchange, eligible to be held by the fund;
(2) the transaction will not cause the fund's weightings to become imbalanced with respect to the weightings of the securities included in the target index for an index fund; (3) the investor represents and agrees that all securities offered to the fund are not subject to any restrictions upon their sale by the fund under the 1933 Act, or otherwise; (4) such securities are traded in an unrelated transaction with a quoted sales price on the same day the exchange valuation is made; (5) the quoted sales price used as a basis of valuation is representative (e.g., one that does not involve a trade of substantial size that artificially influences the price of the security); and (6) the value of any such security being exchanged will not exceed 5% of the fund's net assets immediately prior to the transaction.

Investors interested in purchasing fund shares in kind should contact Vanguard.

REDEMPTION OF SHARES (OTHER THAN ETF SHARES)

The redemption price of shares of each Fund is the NAV next determined after the redemption request is received in good order, as defined in the Fund's prospectus.

Each Fund may suspend redemption privileges or postpone the date of payment for redeemed shares: (1) during any period that the Exchange is closed or trading on the Exchange is restricted as determined by the SEC; (2) during any period when an emergency exists, as defined by the SEC, as a result of which it is not reasonably practicable for the Fund to dispose of securities it owns or to fairly determine the value of its assets; and (3) for such other periods as the SEC may permit.

Each Fund has filed a notice of election with the SEC to pay in cash all redemptions requested by any shareholder of record limited in amount during any 90-day period to the lesser of $250,000 or 1% of the net assets of the Fund at the beginning of such period.

If Vanguard determines that it would be detrimental to the best interests of the remaining shareholders of a Fund to make payment wholly or partly in cash, the Fund may pay the redemption price in whole or in part by a distribution in kind of readily marketable securities held by the Fund in lieu of cash in conformity with applicable rules of the SEC. Investors may incur brokerage charges on the sale of such securities received in payment of redemptions.

There is no charge for share redemptions from Vanguard Mid-Cap Growth Fund or Vanguard High Dividend Yield Index Fund. For Vanguard Selected Value Fund, a 1% fee applies to shares redeemed within one year of purchase. For Vanguard International Explorer Fund, a 2% fee applies to shares redeemed within two months of purchase. Each fee is withheld from redemption proceeds and retained by the Funds. Shares redeemed may be worth more or less than what was paid for them, depending on the market value of the securities held by the Fund.

After redeeming shares that are exempt from redemption fees, shares you have held the longest will be redeemed first.

Redemption fees do not apply to the following:

- Redemptions of shares purchased with reinvested dividend and capital gains distributions.

- Share transfers, rollovers, or re-registrations within the same fund.

- Conversions of shares from one share class to another in the same fund.

- Redemptions of shares to pay fund or account fees.

- Section 529 college savings plans.

- Distributions by shareholders age 701/2 or older from the following:

- Traditional IRAs.

- Inherited IRAs (traditional and Roth).

- Rollover IRAs.

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- SEP-IRAs.

- Section 403(b)(7) plans served by the Vanguard Small Business Services Department.

- SIMPLE IRAs.

- Vanguard Retirement Plans for which Vanguard Fiduciary Trust Company serves as trustee.

- For a one-year period, shares rolled over to an IRA held at Vanguard from a retirement plan for which Vanguard serves as recordkeeper (except for Vanguard Small Business Services retirement plans).

For participants in employer-sponsored defined contribution plans (other than those served by the Vanguard Small Business Services Department), redemption fees will apply to shares exchanged out of a fund into which they had been exchanged, rolled over, or transferred by a participant within the fund's redemption-fee period.

In addition to the exclusions previously listed, redemption fees will not apply to:

n Exchanges of shares purchased with participant payroll or employer contributions.

n Distributions, loans, and in-service withdrawals from a plan.

n Direct rollovers into IRAs.

n Redemptions or transfers of shares as part of a plan termination or at the direction of the plan.

If Vanguard does not serve as recordkeeper for a plan, redemption fees may be applied differently.

RIGHT TO CHANGE POLICIES

Vanguard reserves the right to (1) alter, add, or discontinue any conditions of purchase (including eligibility requirements), redemption, exchange, conversion, service, or privilege at any time without prior notice; (2) accept initial purchases by telephone; (3) freeze any account and/or suspend account services when Vanguard has received reasonable notice of a dispute regarding the assets in an account, including notice of a dispute between the registered or beneficial account owners or when we reasonably believe a fraudulent transaction may occur or has occurred; (4) temporarily freeze any account and/or suspend account services upon initial notification to Vanguard of the death of the shareholder until Vanguard receives required documentation in good order; (5) alter, impose, discontinue, or waive any redemption fee, account service fee, or other fees charged to a group of shareholders; and (6) redeem an account, without the owner's permission to do so, in cases of threatening conduct or suspicious, fraudulent, or illegal activity. Changes may affect any or all investors. These actions will be taken when, at the sole discretion of Vanguard management, we reasonably believe they are deemed to be in the best interest of a fund.

INVESTING WITH VANGUARD THROUGH OTHER FIRMS

Each Fund has authorized certain agents to accept on its behalf purchase and redemption orders, and those agents are authorized to designate other intermediaries to accept purchase and redemption orders on the Fund's behalf (collectively, Authorized Agents). A Fund will be deemed to have received a purchase or redemption order when an Authorized Agent accepts the order in accordance with the Fund's instructions. In most instances, a customer order that is properly transmitted to an Authorized Agent will be priced at the Fund's NAV next determined after the order is received by the Authorized Agent.

When intermediaries establish accounts in Vanguard funds for their clients, we cannot always monitor the trading activity of individual clients. However, we review trading activity at the omnibus level, and if we detect suspicious activity, we will seek to investigate and take appropriate action. If necessary, Vanguard may prohibit additional purchases of fund shares by an intermediary or by certain of the intermediary's clients. Intermediaries may also monitor their clients' trading activities in the Vanguard funds.

For those Vanguard funds that charge purchase or redemption fees, intermediaries will be asked to assess purchase and redemption fees on shareholder and participant accounts and remit these fees to the funds. The application of purchase and redemption fees and frequent-trading policies may vary among intermediaries. There are no assurances that Vanguard will successfully identify all intermediaries or that intermediaries will properly assess purchase and redemption fees or administer frequent-trading policies. If you invest with Vanguard through an intermediary, please read that firm's materials carefully to learn of any other rules or fees that may apply.

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MANAGEMENT OF THE FUNDS

VANGUARD

Each Fund is part of the Vanguard group of investment companies, which consists of more than 150 funds. Through their jointly-owned subsidiary, Vanguard, the funds obtain at cost virtually all of their corporate management, administrative, and distribution services. Vanguard also provides investment advisory services on an at-cost basis to several of the Vanguard funds.

Vanguard employs a supporting staff of management and administrative personnel needed to provide the requisite services to the funds and also furnishes the funds with necessary office space, furnishings, and equipment. Each fund pays its share of Vanguard's total expenses, which are allocated among the funds under methods approved by the board of trustees of each fund. In addition, each fund bears its own direct expenses, such as legal, auditing, and custodian fees.

The funds' officers are also officers and employees of Vanguard.

Vanguard, Vanguard Marketing Corporation, the funds' advisors, and the funds have adopted Codes of Ethics designed to prevent employees who may have access to nonpublic information about the trading activities of the funds (access persons) from profiting from that information. The Codes permit access persons to invest in securities for their own accounts, including securities that may be held by a fund, but place substantive and procedural restrictions on the trading activities of access persons. For example, the Codes require that access persons receive advance approval for most securities trades to ensure that there is no conflict with the trading activities of the funds. The Codes also limit the ability of Vanguard employees to engage in short-term trading of Vanguard funds.

Vanguard was established and operates under an Amended and Restated Funds' Service Agreement. The Amended and Restated Funds' Service Agreement provides as follows: (1) each Vanguard fund may be called upon to invest up to 0.40% of its current net assets in Vanguard, and (2) there is no other limitation on the dollar amount that each Vanguard fund may contribute to Vanguard's capitalization. The amounts that each fund has invested are adjusted from time to time in order to maintain the proportionate relationship between each fund's relative net assets and its contribution to Vanguard's capital. As of October 31, 2007, the Funds had contributed $807,000 to Vanguard, which represented 0.01% of each Fund's net assets and was 0.80% of Vanguard's capitalization.

MANAGEMENT. Corporate management and administrative services include: (1) executive staff; (2) accounting and financial; (3) legal and regulatory; (4) shareholder account maintenance; (5) monitoring and control of custodian relationships; (6) shareholder reporting; and (7) review and evaluation of advisory and other services provided to the funds by third parties.

DISTRIBUTION. Vanguard Marketing Corporation (VMC), 400 Devon Park Drive A39, Wayne, PA 19087, a wholly-owned subsidiary of Vanguard, is the principal underwriter for the funds and in that capacity performs and finances marketing, promotional, and distribution activities (collectively, marketing and distribution activities) that are primarily intended to result in the sale of the funds' shares. VMC performs marketing and distribution activities at cost in accordance with the terms and conditions of a 1981 SEC exemptive order that permits the Vanguard funds to internalize and jointly finance the marketing, promotion, and distribution of their shares. Under the terms of the SEC order, the funds' trustees review and approve the marketing and distribution expenses incurred on their behalf, including the nature and cost of the activities and the desirability of each fund's continued participation in the joint arrangement.

To ensure that each fund's participation in the joint arrangement falls within a reasonable range of fairness, each fund contributes to VMC's marketing and distribution expenses in accordance with an SEC-approved formula. Under that formula, one half of the marketing and distribution expenses are allocated among the funds based upon their relative net assets. The remaining half of those expenses is allocated among the funds based upon each fund's sales for the preceding 24 months relative to the total sales of the funds as a group; provided, however, that no fund's aggregate quarterly rate of contribution for marketing and distribution expenses shall exceed 125% of the average marketing and distribution expense rate for Vanguard, and that no fund shall incur annual marketing and distribution expenses in excess of 0.20 of 1% of its average month-end net assets. As of October 31, 2007, none of the Vanguard funds' allocated share of VMC's marketing and distribution expenses was greater than 0.03% of the fund's average month-end net assets. Each fund's contribution to these marketing and distribution expenses helps to maintain and enhance the attractiveness and viability of the Vanguard complex as a whole, which benefits all of the funds and their shareholders.

B-24

VMC's principal marketing and distribution expenses are for advertising, promotional materials, and marketing personnel. Other marketing and distribution activities that VMC undertakes on behalf of the funds may include, but are not limited to:

- Conducting or publishing Vanguard-generated research and analysis concerning the funds, other investments, the financial markets, or the economy;

- Providing views, opinions, advice, or commentary concerning the funds, other investments, the financial markets, or the economy;

- Providing analytical, statistical, performance, or other information concerning the funds, other investments, the financial markets, or the economy;

- Providing administrative services in connection with investments in the funds or other investments, including, but not limited to, shareholder services, recordkeeping services, and educational services;

- Providing products or services that assist investors or financial service providers (as defined below) in the investment decision-making process;

- Providing promotional discounts, commission-free trading, fee waivers, and other benefits to clients of Vanguard Brokerage Services/(R)/ who maintain qualifying investments in the funds; and

- Sponsoring, jointly sponsoring, financially supporting, or participating in conferences, programs, seminars, presentations, meetings, or other events involving fund shareholders, financial service providers, or others concerning the funds, other investments, the financial markets, or the economy, such as industry conferences, prospecting trips, due diligence visits, training or education meetings, and sales presentations.

VMC performs most marketing and distribution activities itself. Some activities may be conducted by third parties pursuant to shared marketing arrangements under which VMC agrees to share the costs and performance of marketing and distribution activities in concert with a financial service provider. Financial service providers include, but are not limited to, investment advisors, broker-dealers, financial planners, financial consultants, banks, and insurance companies. Under these cost- and performance-sharing arrangements, VMC may pay or reimburse a financial service provider (or a third party it retains) for marketing and distribution activities that VMC would otherwise perform. VMC's cost- and performance-sharing arrangements may be established in connection with Vanguard investment products or services offered or provided to or through the financial service providers. VMC's arrangements for shared marketing and distribution activities may vary among financial service providers, and its payments or reimbursements to financial service providers in connection with shared marketing and distribution activities may be significant. VMC does not participate in the offshore arrangement Vanguard has established for qualifying Vanguard funds to be distributed in certain foreign countries on a private-placement basis to government-sponsored and other institutional investors through a third-party "asesor de inversiones" (investment advisor), which includes incentive-based remuneration.

In connection with its marketing and distribution activities, VMC may give financial service providers (or their representatives): (1) promotional items of nominal value that display Vanguard's logo, such as golf balls, shirts, towels, pens, and mouse pads; (2) gifts that do not exceed $100 per person annually and are not preconditioned on achievement of a sales target; (3) an occasional meal, a ticket to a sporting event or the theater, or comparable entertainment that is neither so frequent nor so extensive as to raise any question of propriety and is not preconditioned on achievement of a sales target; and (4) reasonable travel and lodging accommodations to facilitate participation in marketing and distribution activities.

VMC, as a matter of policy, does not pay asset-based fees, sales-based fees, or account-based fees to financial service providers in connection with its marketing and distribution activities for the Vanguard funds. VMC policy also prohibits marketing and distribution activities that are intended, designed, or likely to compromise suitability determinations by, or the fulfillment of any fiduciary duties or other obligations that apply to, financial service providers. Nonetheless, VMC's marketing and distribution activities are primarily intended to result in the sale of the funds' shares, and as such its activities, including shared marketing and distribution activities, may influence participating financial service providers (or their representatives) to recommend, promote, include, or invest in a Vanguard fund or share class. In addition, Vanguard or any of its subsidiaries may retain a financial service provider to provide consulting or other services, and that financial service provider also may provide services to investors. Investors should consider the possibility that any of these activities or relationships may influence a financial service provider's (or its representatives') decision to recommend, promote, include, or invest in a Vanguard fund or share class. Each financial service provider should consider its suitability determinations, fiduciary duties, and other legal obligations (or those of its representatives) in connection with any decision to consider, recommend, promote, include, or invest in a Vanguard fund or share class.

B-25

The following table describes the expenses of Vanguard and VMC that are shared by the funds on an at-cost basis under the terms of two SEC exemptive orders. Amounts captioned "Management and Administrative Expenses" include a fund's allocated share of expenses associated with the management, administrative, and transfer agency services Vanguard provides to the funds. Amounts captioned "Marketing and Distribution Expenses" include a fund's allocated share of expenses associated with the marketing and distribution activities that VMC conducts on behalf of the Vanguard funds.

As is the case with all mutual funds, transaction costs incurred by the Funds for buying and selling securities are not reflected in the table. Annual Shared Fund Operating Expenses are based on expenses incurred in the fiscal years ended October 31, 2005, 2006, and 2007, and are presented as a percentage of each Funds' average month-end net assets.

 ANNUAL SHARED FUND OPERATING EXPENSES
 (SHARED EXPENSES DEDUCTED FROM FUND ASSETS)
 -------------------------------------------
 FISCAL YEAR ENDED FISCAL YEAR ENDED FISCAL YEAR ENDED
FUND OCTOBER 31, 2005 OCTOBER 31, 2006 OCTOBER 31, 2007
---- ----------------- ----------------- -----------------
SELECTED VALUE FUND

Management and Adminitrative Expenses: 0.49% 0.42% 0.40%
Marketing and Distribution Expenses: 0.02 0.02 0.02

INTERNATIONAL EXPLORER FUND

Management and Adminitrative Expenses: 0.44% 0.38% 0.29%
Marketing and Distribution Expenses: 0.02 0.02 0.01

MID-CAP GROWTH FUND

Management and Adminitrative Expenses: 0.41% 0.46% 0.53%
Marketing and Distribution Expenses: 0.03 0.03 0.02

HIGH DIVIDEND YIELD INDEX FUND

Management and Adminitrative Expenses: -- -- 0.19%
Marketing and Distribution Expenses: -- -- 0.02

 Vanguard High Dividend Yield Index Fund did not commence operations until November 10, 2006.

Each investment advisor may direct certain security trades to brokers who have agreed to rebate to the Funds part of the commissions generated. Such rebates are used solely to reduce the Funds' management and administrative expenses and are not reflected in these totals.

OFFICERS AND TRUSTEES

Each Fund is governed by the board of trustees to the Trust and a single set of officers. The officers manage the day-to-day operations of the Funds under the direction of the Funds' board of trustees. The trustees set broad policies for the Funds; select investment advisors; monitor fund operations, performance, and costs; nominate and select new trustees; and elect fund officers. Each trustee serves a Fund until its termination; until the trustee's retirement, resignation, or death; or as otherwise specified in the Trust's organizational documents. Any trustee may be removed at a meeting of shareholders by a vote representing two-thirds of the total net asset value of all shares of the Funds. Each trustee also serves as a director of Vanguard.

B-26

The following chart shows information for each trustee and executive officer of the Funds. The mailing address of the trustees and officers is P.O. Box 876, Valley Forge, PA 19482.

 NUMBER OF
 VANGUARD VANGUARD FUNDS
 POSITION(S) FUNDS' TRUSTEE/ PRINCIPAL OCCUPATION(S) AND OUTSIDE DIRECTORSHIPS OVERSEEN BY
NAME, YEAR OF BIRTH HELD WITH FUNDS OFFICER SINCE DURING THE PAST FIVE YEARS TRUSTEE/OFFICER
------------------- --------------- -------------- -------------------------- ---------------
INTERESTED TRUSTEE
John J. Brennan/1/ Chairman of the May 1987 Chairman of the Board, Chief Executive Officer, and 152
(1954) Board, Chief Director (Trustee) of Vanguard, and each of the
 Executive Officer, investment companies served by Vanguard.
 and Trustee
------------------------------------------------------------------------------------------------------------------------------------
INDEPENDENT TRUSTEES
Charles D. Ellis Trustee January 2001 Applecore Partners (pro bono ventures in education); 152
(1937) Senior Advisor to Greenwich Associates (international
 business strategy consulting); Successor Trustee of
 Yale University; Overseer of the Stern School of
 Business at New York University; Trustee of the
 Whitehead Institute for Biomedical Research.

Emerson U. Fullwood Trustee January 2008 Executive Chief Staff and Marketing Officer for North 152
(1948) America since 2004 and Corporate Vice President of
 Xerox Corporation (photocopiers and printers); Director
 of SPX Corporation (multi-industry manufacturing), of
 the United Way of Rochester, and of the Boy Scouts of
 America.

Rajiv L. Gupta Trustee December 2001 Chairman, President, and Chief Executive Officer of 152
(1945) Rohm and Haas Co. (chemicals); Board Member of
 American Chemistry Council; Director of Tyco
 International, Ltd. (diversified manufacturing and
 services) since 2005; Trustee of Drexel University and
 of the Chemical Heritage Foundation.

Amy Gutmann Trustee June 2006 President of the University of Pennsylvania since 2004; 152
(1949) Professor in the School of Arts and Sciences,
 Annenberg School for Communication, and Graduate
 School of Education of the University of Pennsylvania
 since 2004; Provost (2001-2004) and Laurance S.
 Rockefeller Professor of Politics and the University
 Center for Human Values (1990-2004), Princeton
 University; Director of Carnegie Corporation of New
 York since 2005, and of Schuylkill River Development
 Corporation and Greater Philadelphia Chamber of
 Commerce since 2004.

JoAnn Heffernan Heisen Trustee July 1998 Corporate Vice President and Chief Global Diversity 152
(1950) Officer since 2006, Vice President and Chief
 Information Officer (1997-2005), and Member of the
 Executive Committee of Johnson & Johnson
 (pharmaceuticals/consumer products); Director of the
 University Medical Center at Princeton and Women's
 Research and Education Institute.

1 Officers of the Funds are "interested persons" as defined in the 1940 Act.

B-27

 NUMBER OF
 VANGUARD VANGUARD FUNDS
 POSITION(S) FUNDS' TRUSTEE/ PRINCIPAL OCCUPATION(S) AND OUTSIDE DIRECTORSHIPS OVERSEEN BY
NAME, YEAR OF BIRTH HELD WITH FUNDS OFFICER SINCE DURING THE PAST FIVE YEARS TRUSTEE/OFFICER
------------------- --------------- -------------- -------------------------- ---------------

Andre F. Perold Trustee December 2004 George Gund Professor of Finance and Banking, 152
(1952) Harvard Business School; Senior Associate Dean,
 Director of Faculty Recruiting, and Chair of Finance
 Faculty, Harvard Business School; Director and
 Chairman of Unx, Inc. (equities trading firm) since
 2003; Chair of the Investment Committee of HighVista
 Strategies LLC (private investment firm) since 2005.

Alfred M. Rankin, Jr. Trustee January 1993 Chairman, President, Chief Executive Officer, and 152
(1941) Director of NACCO Industries, Inc.(forklift trucks/
 housewares/lignite); Director of Goodrich Corporation
 (industrial products/aircraft systems and services).

J. Lawrence Wilson Trustee April 1985 Retired Chairman and Chief Executive Officer of Rohm 152
(1936) and Haas Co. (chemicals); Director of Cummins Inc.
 (diesel engines) and AmerisourceBergen Corp.
 (pharmaceutical distribution); Trustee of Vanderbilt
 University and Culver Educational Foundation.
------------------------------------------------------------------------------------------------------------------------------------
EXECUTIVE OFFICERS
Thomas J. Higgins/1/ Treasurer July 1998 Principal of Vanguard; Treasurer of each of the 152
(1957) investment companies served by Vanguard.

Heidi Stam/1/ Secretary July 2005 Managing Director of Vanguard since 2006; General 152
(1956) Counsel of Vanguard since 2005; Secretary of
 Vanguard, and of each of the investment companies
 served by Vanguard, since 2005; Principal of Vanguard
 (1997-2006).

1 Officers of the Funds are "interested persons" as defined in the 1940 Act.

Mr. Ellis is a Senior Advisor to Greenwich Associates, a firm that consults on business strategy to professional financial services organizations in markets around the world. A large number of financial service providers, including Vanguard, subscribe to programs of research-based consulting. During 2006 and 2007, Vanguard paid Greenwich subscription fees amounting to less than $610,000. Vanguard's subscription rates are similar to those of other subscribers.

Board Committees: The Trust's board has the following committees:

- Audit Committee: This committee oversees the accounting and financial reporting policies, the systems of internal controls, and the independent audits of each fund and Vanguard. All independent trustees serve as members of the committee. The committee held two meetings during the Funds' last fiscal year.

- Compensation Committee: This committee oversees the compensation programs established by each fund and Vanguard for the benefit of their employees, officers, and trustees/directors. All independent trustees serve as members of the committee. The committee held six meetings during the Funds' last fiscal year.

- Nominating Committee: This committee nominates candidates for election to Vanguard's board of directors and the board of trustees of each fund (collectively, the Vanguard boards). The committee also has the authority to recommend the removal of any director or trustee from the Vanguard boards. All independent trustees serve as members of the committee. The committee held six meetings during the Funds' last fiscal year.

The Nominating Committee will consider shareholder recommendations for trustee nominees. Shareholders may send recommendations to Mr. Rankin, Chairman of the Committee.

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TRUSTEE COMPENSATION

The same individuals serve as trustees of all Vanguard funds and each fund pays a proportionate share of the trustees' compensation. The funds also employ their officers on a shared basis; however, officers are compensated by Vanguard, not the funds.

INDEPENDENT TRUSTEES. The funds compensate their independent trustees (i.e., the ones who are not also officers of the funds) in three ways:

- The independent trustees receive an annual fee for their service to the funds, which is subject to reduction based on absences from scheduled board meetings.

- The independent trustees are reimbursed for the travel and other expenses that they incur in attending board meetings.

- Upon retirement (after attaining age 65 and completing five years of service), the independent trustees who began their service prior to January 1, 2001, receive a retirement benefit under a separate account arrangement. As of January 1, 2001, the opening balance of each eligible trustee's separate account was generally equal to the net present value of the benefits he or she had accrued under the trustees' former retirement plan. Each eligible trustee's separate account will be credited annually with interest at a rate of 7.5% until the trustee receives his or her final distribution. Those independent trustees who began their service on or after January 1, 2001, are not eligible to participate in the plan.

"INTERESTED" TRUSTEE. Mr. Brennan serves as a trustee, but is not paid in this capacity. He is, however, paid in his role as an officer of Vanguard.

COMPENSATION TABLE. The following table provides compensation details for each of the trustees. We list the amounts paid as compensation and accrued as retirement benefits by the Funds for each trustee. In addition, the table shows the total amount of benefits that we expect each trustee to receive from all Vanguard funds upon retirement, and the total amount of compensation paid to each trustee by all Vanguard funds. (Emerson Fullwood is not included in the table because he did not serve as trustee as of December 31, 2007.)

 VANGUARD WHITEHALL FUNDS
 TRUSTEES' COMPENSATION TABLE
 PENSION OR ACCRUED ANNUAL TOTAL COMPENSATION
 AGGREGATE RETIREMENT BENEFITS RETIREMENT FROM ALL
 COMPENSATION ACCRUED AS PART OF BENEFIT AT VANGUARD FUNDS
TRUSTEE FROM THESE FUNDS(1) THESE FUNDS' EXPENSES(1) JANUARY 1, 2007(2) PAID TO TRUSTEES(3)
------- ---------------- --------------------- --------------- ----------------
John J. Brennan -- -- -- --
Charles D. Ellis $1,213 -- -- $145,000
Rajiv L. Gupta 1,178 -- -- $145,000
Amy Gutmann 1,213 -- -- $145,000
JoAnn Heffernan Heisen 1,213 $26 $2,542 $145,000
Andre F. Perold 1,213 -- -- $145,000
Alfred M. Rankin, Jr. 1,319 31 4,982 168,000
J. Lawrence Wilson 1,178 32 7,240 140,900

1 The amounts shown in this column are based on the Funds' fiscal year ended October 31, 2007. Each Fund within the
 Trust is responsible for a proportionate share of these amounts.
2 Each trustee is eligible to receive retirement benefits only after completing at least 5 years (60 consecutive
 months) of service as a trustee for the Vanguard funds. The annual retirement benefit will be paid in monthly
 installments, beginning with the month following the trustee's retirement from service, and will cease after
 10 years of payments (120 monthly installments). Trustees who began their service on or after January 1, 2001,
 are not eligible to participate in the retirement benefit plan.
3 The amounts reported in this column reflect the total compensation paid to each trustee for his or her service as
 trustee of 152 Vanguard funds for the 2007 calendar year.

B-29

OWNERSHIP OF FUND SHARES

All trustees allocate their investments among the various Vanguard funds based on their own investment needs. The following table shows each trustee's ownership of shares of the Fund and of all Vanguard funds served by the trustee as of December 31, 2007.

 DOLLAR RANGE AGGREGATE DOLLAR RANGE OF
 OF FUND SHARES VANGUARD FUND SHARES
FUND TRUSTEE OWNED BY TRUSTEE OWNED BY TRUSTEE
---- ------- ---------------- ----------------
VANGUARD SELECTED
VALUE FUND John J. Brennan -- Over $100,000
 Charles D. Ellis -- Over $100,000
 Emerson U. Fullwood/1/ -- Over $100,000
 Rajiv L. Gupta -- Over $100,000
 Amy Gutmann -- Over $100,000
 JoAnn Heffernan Heisen -- Over $100,000
 Andre F. Perold -- Over $100,000
 Alfred M. Rankin, Jr. -- Over $100,000
 J. Lawrence Wilson -- Over $100,000


VANGUARD INTERNATIONAL
EXPLORER FUND John J. Brennan -- Over $100,000
 Charles D. Ellis -- Over $100,000
 Emerson U. Fullwood/1/ -- Over $100,000
 Rajiv L. Gupta -- Over $100,000
 Amy Gutmann -- Over $100,000
 JoAnn Heffernan Heisen -- Over $100,000
 Andre F. Perold -- Over $100,000
 Alfred M. Rankin, Jr. -- Over $100,000
 J. Lawrence Wilson Over $100,000 Over $100,000


VANGUARD MID-CAP
GROWTH FUND John J. Brennan -- Over $100,000
 Charles D. Ellis -- Over $100,000
 Emerson U. Fullwood/1/ -- Over $100,000
 Rajiv L. Gupta -- Over $100,000
 Amy Gutmann -- Over $100,000
 JoAnn Heffernan Heisen Over $100,000 Over $100,000
 Andre F. Perold -- Over $100,000
 Alfred M. Rankin, Jr. -- Over $100,000
 J. Lawrence Wilson -- Over $100,000


VANGUARD HIGH DIVIDEND
YIELD INDEX FUND John J. Brennan -- Over $100,000
 Charles D. Ellis -- Over $100,000
 Emerson U. Fullwood/1/ -- Over $100,000
 Rajiv L. Gupta -- Over $100,000
 Amy Gutmann -- Over $100,000
 JoAnn Heffernan Heisen -- Over $100,000
 Andre F. Perold -- Over $100,000
 Alfred M. Rankin, Jr. -- Over $100,000
 J. Lawrence Wilson -- Over $100,000


1 Mr. Fullwood became a member of the Funds' board effective January 2008.

B-30

As of January 31, 2008, the trustees and executive officers of the funds owned, in the aggregate, less than 1% of each class of each fund's outstanding shares.

As of January 31, 2008, those listed below owned of record 5% or more of each class's outstanding shares:

Vanguard International Explorer Fund--Investor Shares: Charles Schwab & Co., Inc., San Francisco, CA (7.74%).

Although the Funds do not have information concerning the beneficial ownership of shares held in the names of the Depository Trust Company (DTC) participants, as of January 31, 2008, the name and percentage ownership of each DTC participant that owned of record 5% or more of the outstanding ETF Shares of a Fund were as follows:

Vanguard High Dividend Yield Index Fund--ETF Shares: National Financial Services LLC (26.77%), Pershing LLC (20.33%), Charles Schwab & Co., Inc. (14.53%), Ameritrade, Inc. (11.66%).

PORTFOLIO HOLDINGS DISCLOSURE POLICIES AND PROCEDURES

INTRODUCTION

Vanguard and the Boards of Trustees of the Vanguard funds (Boards) have adopted Portfolio Holdings Disclosure Policies and Procedures (Policies and Procedures) to govern the disclosure of the portfolio holdings of each Vanguard fund. Vanguard and the Boards considered each of the circumstances under which Vanguard fund portfolio holdings may be disclosed to different categories of persons under the Policies and Procedures. Vanguard and the Boards also considered actual and potential material conflicts that could arise in such circumstances between the interests of Vanguard fund shareholders, on the one hand, and those of the fund's investment advisor, distributor, or any affiliated person of the fund, its investment advisor, or its distributor, on the other. After giving due consideration to such matters and after the exercise of their fiduciary duties and reasonable business judgment, Vanguard and the Boards determined that the Vanguard funds have a legitimate business purpose for disclosing portfolio holdings to the persons described in each of the circumstances set forth in the Policies and Procedures and that the Policies and Procedures are reasonably designed to ensure that disclosure of portfolio holdings and information about portfolio holdings is in the best interests of fund shareholders and appropriately addresses the potential for material conflicts of interest.

The Boards exercise continuing oversight of the disclosure of Vanguard fund portfolio holdings by (1) overseeing the implementation and enforcement of the Policies and Procedures, the Code of Ethics, and the Policies and Procedures Designed to Prevent the Misuse of Inside Information (collectively, the portfolio holdings governing policies) by the Chief Compliance Officer of Vanguard and the Vanguard funds; (2) considering reports and recommendations by the Chief Compliance Officer concerning any material compliance matters (as defined in Rule 38a-1 under the 1940 Act and Rule 206(4)-7 under the Investment Advisers Act of 1940) that may arise in connection with any portfolio holdings governing policies; and (3) considering whether to approve or ratify any amendment to any portfolio holdings governing policies. Vanguard and the Boards reserve the right to amend the Policies and Procedures at any time and from time to time without prior notice in their sole discretion. For purposes of the Policies and Procedures, the term "portfolio holdings" means the equity and debt securities (e.g., stocks and bonds) held by a Vanguard fund and does not mean the cash investments, derivatives, and other investment positions (collectively, other investment positions) held by the fund.

ONLINE DISCLOSURE OF TEN LARGEST STOCK HOLDINGS

Each of the Vanguard equity funds and Vanguard balanced funds generally will seek to disclose the fund's ten largest stock portfolio holdings and the percentages that each of these ten largest stock portfolio holdings represent of the fund's total assets as of the most recent calendar-quarter-end (quarter-end ten largest stock holdings) online at www.vanguard.com in the "Holdings" section of the fund's Profile page, 15 calendar days after the end of the calendar quarter. In addition, those funds generally will seek to disclose the fund's ten largest stock portfolio holdings as of the most recent month-end (month-end ten largest stock holdings, and together with quarter-end ten largest stock holdings, ten largest stock holdings) online at www.vanguard.com in the "Holdings" section of the fund's Profile page, 10 business days after the end of the month. Online disclosure of the ten largest stock holdings is made to all categories of persons, including individual investors, institutional investors, intermediaries, third-party service providers, rating and ranking organizations, affiliated persons of a Vanguard fund, and all other persons.

B-31

ONLINE DISCLOSURE OF COMPLETE PORTFOLIO HOLDINGS

Each of the Vanguard funds, excluding Vanguard money market funds, generally will seek to disclose the fund's complete portfolio holdings (complete portfolio holdings) as of the most recent calendar-quarter-end online at www.vanguard.com in the "Holdings" section of the fund's Profile page, 30 calendar days after the end of the calendar quarter. Online disclosure of complete portfolio holdings is made to all categories of persons, including individual investors, institutional investors, intermediaries, third-party service providers, rating and ranking organizations, affiliated persons of a Vanguard fund, and all other persons. Vanguard's Portfolio Review Department will review complete portfolio holdings before online disclosure is made as described above and, after consultation with a Vanguard fund's investment advisor, may withhold any portion of the fund's complete portfolio holdings from online disclosure as described above when deemed to be in the best interests of the fund.

DISCLOSURE OF COMPLETE PORTFOLIO HOLDINGS TO SERVICE PROVIDERS SUBJECT TO CONFIDENTIALITY AND TRADING RESTRICTIONS

Vanguard, for legitimate business purposes, may disclose Vanguard fund complete portfolio holdings at times it deems necessary and appropriate to rating and ranking organizations, financial printers, proxy voting service providers, pricing information vendors, third parties that deliver analytical, statistical, or consulting services, and other third parties that provide services (collectively, Service Providers) to Vanguard, Vanguard subsidiaries, and/or the Vanguard funds. Disclosure of complete portfolio holdings to a Service Provider is conditioned on the Service Provider being subject to a written agreement imposing a duty of confidentiality, including a duty not to trade on the basis of any material nonpublic information.

The frequency with which complete portfolio holdings may be disclosed to a Service Provider, and the length of the lag, if any, between the date of the information and the date on which the information is disclosed to the Service Provider, is determined based on the facts and circumstances, including, without limitation, the nature of the portfolio holdings information to be disclosed, the risk of harm to the funds and their shareholders, and the legitimate business purposes served by such disclosure. The frequency of disclosure to a Service Provider varies and may be as frequent as daily, with no lag. Disclosure of Vanguard fund complete portfolio holdings by Vanguard to a Service Provider must be authorized by a Vanguard fund officer or a Principal in Vanguard's Portfolio Review or Legal Department. Any disclosure of Vanguard fund complete portfolio holdings to a Service Provider as described previously may also include a list of the other investment positions that make up the fund, such as cash investments and derivatives.

As of March 31, 2007, Vanguard fund complete portfolio holdings are disclosed to the following Service Providers as part of ongoing arrangements that serve legitimate business purposes: Abel/Noser Corporation, Advisor Software, Inc., Alcom Printing Group Inc., Apple Press, L.C., Automatic Data Processing, Inc., Brown Brothers Harriman & Co., FactSet Research Systems Inc., Intelligencer Printing Company, Investment Technology Group, Inc., Lipper, Inc., McMunn Associates Inc., Pitney Bowes Management Services, Reuters America Inc., R.R. Donnelley, Inc., State Street Bank and Trust Company, Triune Color Corporation, and Tursack Printing Inc.

DISCLOSURE OF COMPLETE PORTFOLIO HOLDINGS TO VANGUARD AFFILIATES AND CERTAIN FIDUCIARIES SUBJECT TO CONFIDENTIALITY AND TRADING RESTRICTIONS

Vanguard fund complete portfolio holdings may be disclosed between and among the following persons (collectively, Affiliates and Fiduciaries) for legitimate business purposes within the scope of their official duties and responsibilities, subject to such persons' continuing legal duty of confidentiality and legal duty not to trade on the basis of any material nonpublic information, as such duties are imposed under the Code of Ethics, the Policies and Procedures Designed to Prevent the Misuse of Inside Information, by agreement, or under applicable laws, rules, and regulations: (1) persons who are subject to the Code of Ethics or the Policies and Procedures Designed to Prevent the Misuse of Inside Information; (2) an investment advisor, distributor, administrator, transfer agent, or custodian to a Vanguard fund; (3) an accounting firm, an auditing firm or outside legal counsel retained by Vanguard, a Vanguard subsidiary, or a Vanguard fund; (4) an investment advisor to whom complete portfolio holdings are disclosed for due diligence purposes when the advisor is in merger or acquisition talks with a Vanguard fund's current advisor; and (5) a newly hired investment advisor or sub-advisor to whom complete portfolio holdings are disclosed prior to the time it commences its duties.

The frequency with which complete portfolio holdings may be disclosed between and among Affiliates and Fiduciaries, and the length of the lag, if any, between the date of the information and the date on which the information is disclosed between and among the Affiliates and Fiduciaries, is determined by such Affiliates and Fiduciaries based on

B-32

the facts and circumstances, including, without limitation, the nature of the portfolio holdings information to be disclosed, the risk of harm to the funds and their shareholders, and the legitimate business purposes served by such disclosure. The frequency of disclosure between and among Affiliates and Fiduciaries varies and may be as frequent as daily, with no lag. Any disclosure of Vanguard fund complete portfolio holdings to any Affiliates and Fiduciaries as previously described above may also include a list of the other investment positions that make up the fund, such as cash investments and derivatives. Disclosure of Vanguard fund complete portfolio holdings or other investment positions by Vanguard, Vanguard Marketing Corporation, or a Vanguard fund to Affiliates and Fiduciaries must be authorized by a Vanguard fund officer or a Principal of Vanguard.

As of March 31, 2007, Vanguard fund complete portfolio holdings are disclosed to the following Affiliates and Fiduciaries as part of ongoing arrangements that serve legitimate business purposes: Vanguard, and each investment advisor, custodian, and independent registered public accounting firm identified in this Statement of Additional Information.

DISCLOSURE OF PORTFOLIO HOLDINGS TO BROKER-DEALERS IN THE NORMAL COURSE OF MANAGING A FUND'S ASSETS

An investment advisor, administrator, or custodian for a Vanguard fund may, for legitimate business purposes within the scope of its official duties and responsibilities, disclose portfolio holdings (whether partial portfolio holdings or complete portfolio holdings) and other investment positions that make up the fund to one or more broker-dealers during the course of, or in connection with, normal day-to-day securities and derivatives transactions with or through such broker-dealers subject to the broker-dealer's legal obligation not to use or disclose material nonpublic information concerning the fund's portfolio holdings, other investment positions, securities transactions, or derivatives transactions without the consent of the fund or its agents. The Vanguard funds have not given their consent to any such use or disclosure and no person or agent of Vanguard is authorized to give such consent except as approved in writing by the Boards of the Vanguard funds. Disclosure of portfolio holdings or other investment positions by Vanguard to broker-dealers must be authorized by a Vanguard fund officer or a Principal of Vanguard.

DISCLOSURE OF NON-MATERIAL INFORMATION

The Policies and Procedures permit Vanguard fund officers, Vanguard fund portfolio managers, and other Vanguard representatives (collectively, Approved Vanguard Representatives) to disclose any views, opinions, judgments, advice or commentary, or any analytical, statistical, performance, or other information, in connection with or relating to a Vanguard fund or its portfolio holdings and/or other investment positions (collectively, commentary and analysis) or any changes in the portfolio holdings of a Vanguard fund that occurred after the most recent calendar-quarter end (recent portfolio changes) to any person if (1) such disclosure serves a legitimate business purpose, (2) such disclosure does not effectively result in the disclosure of the complete portfolio holdings of any Vanguard fund (which can be disclosed only in accordance with the Policies and Procedures), and (3) such information does not constitute material nonpublic information. Disclosure of commentary and analysis or recent portfolio changes by Vanguard, Vanguard Marketing Corporation, or a Vanguard fund must be authorized by a Vanguard fund officer or a Principal of Vanguard.

An Approved Vanguard Representative must make a good faith determination whether the information constitutes material nonpublic information, which involves an assessment of the particular facts and circumstances. Vanguard believes that in most cases recent portfolio changes that involve a few or even several securities in a diversified portfolio or commentary and analysis would be immaterial and would not convey any advantage to a recipient in making an investment decision concerning a Vanguard fund. Nonexclusive examples of commentary and analysis about a Vanguard fund include (1) the allocation of the fund's portfolio holdings and other investment positions among various asset classes, sectors, industries, and countries; (2) the characteristics of the stock and bond components of the fund's portfolio holdings and other investment positions; (3) the attribution of fund returns by asset class, sector, industry, and country; and (4) the volatility characteristics of the fund. An Approved Vanguard Representative may in its sole discretion determine whether to deny any request for information made by any person, and may do so for any reason or for no reason. "Approved Vanguard Representatives" include, for purposes of the Policies and Procedures, persons employed by or associated with Vanguard or a subsidiary of Vanguard who have been authorized by Vanguard's Portfolio Review Department to disclose recent portfolio changes and/or commentary and analysis in accordance with the Policies
and Procedures.

As of March 31, 2007, Vanguard non-material portfolio holdings information is disclosed to KPMG, LLP, and R.V. Kuhns & Associates.

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DISCLOSURE OF PORTFOLIO HOLDINGS IN ACCORDANCE WITH SEC EXEMPTIVE ORDERS

Vanguard's Fund Financial Services unit may disclose to the National Securities Clearing Corporation (NSCC) the daily portfolio composition files (PCFs) that identify a basket of specified securities which may overlap with the actual or expected portfolio holdings of the Vanguard funds (ETF Funds) that offer a class of shares known as Vanguard ETF Shares in accordance with the terms and conditions of related exemptive orders (Vanguard ETF Exemptive Orders) issued by the Securities and Exchange Commission (SEC), as described further below.

Unlike the conventional classes of shares issued by ETF Funds, the ETF Shares are listed for trading on a national securities exchange. Each ETF Fund issues ETF Shares in large blocks, known as "Creation Units." To purchase or redeem a Creation Unit, an investor must be an "Authorized Participant" or it must do so through a broker-dealer that is an Authorized Participant. An Authorized Participant is a participant in the Depository Trust Company (DTC) that has executed a Participant Agreement with Vanguard Marketing Corporation. Each ETF Fund issues Creation Units in exchange for a "portfolio deposit" consisting of a basket of specified securities (Deposit Securities) and a cash payment (the Balancing Amount). Each ETF Fund also redeems Creation Units in kind; an investor who tenders a Creation Unit will receive, as redemption proceeds, a basket of specified securities together with a Balancing Amount.

In connection with the creation and redemption process, and in accordance with the terms and conditions of the Vanguard ETF Exemptive Orders, Vanguard makes available to the NSCC, for dissemination to NSCC participants on each business day prior to the opening of trading on the listing exchange, a PCF containing a list of the names and the required number of shares of each Deposit Security for each ETF Fund. (The NSCC is a clearing agency registered with the SEC and affiliated with DTC.) In addition, the listing exchange disseminates (1) continuously throughout the trading day, through the facilities of the consolidated tape, the market value of an ETF Share, and (2) every 15 seconds throughout the trading day, separately from the consolidated tape, a calculation of the estimated NAV of an ETF Share (which estimate is expected to be accurate to within a few basis points). Comparing these two figures allows an investor to determine whether, and to what extent, ETF Shares are selling at a premium or at a discount to NAV. ETF Shares are listed on the exchange and traded in the secondary market in the same manner as other equity securities. The price of ETF Shares trading on the secondary market is based on a current bid/offer market.

As contemplated by the Vanguard ETF Exemptive Orders, Vanguard and the ETF Funds expect that only institutional arbitrageurs and institutional investors with large indexed portfolios will buy and sell ETF Shares in Creation Unit-sized aggregations because Creation Units can be purchased only in exchange for securities likely to cost millions of dollars. An exchange specialist, in providing for a fair and orderly secondary market for ETF Shares, also may purchase Creation Units for use in its market-making activities on the exchange. Vanguard and the ETF Funds expect secondary market purchasers of ETF Shares will include both institutional and retail investors. Vanguard and the ETF Funds believe that arbitrageurs will purchase or redeem Creation Units to take advantage of discrepancies between the ETF Shares' market price and the ETF Shares' underlying NAV. Vanguard and the ETF Funds expect that this arbitrage activity will provide a market "discipline" that will result in a close correspondence between the price at which the ETF Shares trade and their NAV. In other words, Vanguard and the ETF Funds do not expect the ETF Shares to trade at a significant premium or discount to their NAV.

In addition to making PCFs available to the NSCC, as previously described, Vanguard's Fund Financial Services unit may disclose the PCF for any ETF Fund to any person, or online at www.vanguard.com to all categories of persons, if
(1) such disclosure serves a legitimate business purpose and (2) such disclosure does not constitute material nonpublic information. Vanguard's Fund Financial Services unit must make a good faith determination whether the PCF for any ETF Fund constitutes material nonpublic information, which involves an assessment of the particular facts and circumstances. Vanguard believes that in most cases the PCF for any ETF Fund would be immaterial and would not convey any advantage to the recipient in making an investment decision concerning the ETF Fund if sufficient time has passed between the date of the PCF and the date on which the PCF is disclosed. Vanguard's Fund Financial Services unit may in its sole discretion determine whether to deny any request for the PCF for any ETF Fund made by any person, and may do so for any reason or for no reason. Disclosure of a PCF must be authorized by a Vanguard fund officer or a Principal in Vanguard's Fund Financial Services unit.

DISCLOSURE OF PORTFOLIO HOLDINGS RELATED INFORMATION TO THE ISSUER OF A SECURITY FOR LEGITIMATE BUSINESS PURPOSES

Vanguard, in its sole discretion, may disclose portfolio holdings information concerning a security held by one or more Vanguard funds to the issuer of such security if the issuer presents, to the satisfaction of Fund Financial Services,

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convincing evidence that the issuer has a legitimate business purpose for such information. Disclosure of this information to an issuer is conditioned on the issuer being subject to a written agreement imposing a duty of confidentiality, including a duty not to trade on the basis of any material nonpublic information. The frequency with which portfolio holdings information concerning a security may be disclosed to the issuer of such security, and the length of the lag, if any, between the date of the information and the date on which the information is disclosed to the issuer, is determined based on the facts and circumstances, including, without limitation, the nature of the portfolio holdings information to be disclosed, the risk of harm to the funds and their shareholders, and the legitimate business purposes served by such disclosure. The frequency of disclosure to an issuer cannot be determined in advance of a specific request and will vary based upon the particular facts and circumstances and the legitimate business purposes, but in unusual situations could be as frequent as daily, with no lag. Disclosure of portfolio holdings information concerning a security held by one or more Vanguard funds to the issuer of such security must be authorized by a Vanguard fund officer or a Principal in Vanguard's Portfolio Review or Legal Department.

DISCLOSURE OF PORTFOLIO HOLDINGS AS REQUIRED BY APPLICABLE LAW

Vanguard fund portfolio holdings (whether partial portfolio holdings or complete portfolio holdings) and other investment positions that make up a fund shall be disclosed to any person as required by applicable laws, rules, and regulations. Examples of such required disclosure include, but are not limited to, disclosure of Vanguard fund portfolio holdings (1) in a filing or submission with the SEC or another regulatory body, (2) in connection with seeking recovery on defaulted bonds in a federal bankruptcy case, (3) in connection with a lawsuit, or (4) as required by court order. Disclosure of portfolio holdings or other investment positions by Vanguard, Vanguard Marketing Corporation, or a Vanguard fund as required by applicable laws, rules, and regulations must be authorized by a Vanguard fund officer or a Principal of Vanguard.

PROHIBITIONS ON DISCLOSURE OF PORTFOLIO HOLDINGS

No person is authorized to disclose Vanguard fund portfolio holdings or other investment positions (whether online at www.vanguard.com, in writing, by fax, by e-mail, orally, or by other means) except in accordance with the Policies and Procedures. In addition, no person is authorized to make disclosure pursuant to the Policies and Procedures if such disclosure is otherwise unlawful under the antifraud provisions of the federal securities laws (as defined in Rule 38a-1 under the 1940 Act). Furthermore, Vanguard's management, in its sole discretion, may determine not to disclose portfolio holdings or other investment positions that make up a Vanguard fund to any person who would otherwise be eligible to receive such information under the Policies and Procedures, or may determine to make such disclosures publicly as provided by the Policies and Procedures.

PROHIBITIONS ON RECEIPT OF COMPENSATION OR OTHER CONSIDERATION

The Policies and Procedures prohibit a Vanguard fund, its investment advisor, and any other person from paying or receiving any compensation or other consideration of any type for the purpose of obtaining disclosure of Vanguard fund portfolio holdings or other investment positions. "Consideration" includes any agreement to maintain assets in the fund or in other investment companies or accounts managed by the investment advisor or by any affiliated person of the investment advisor.

INVESTMENT ADVISORY SERVICES

The Trust currently uses six investment advisors:

- Barrow, Hanley, Mewhinney & Strauss, Inc. provides investment advisory services for a portion of the assets in Vanguard Selected Value Fund.

- Chartwell Investment Partners, L.P. provides investment advisory services for a portion of the assets in Vanguard Mid-Cap Growth Fund.

- Donald Smith & Co., Inc. provides investment advisory services for a portion of the assets in Vanguard Selected Value Fund.

- Schroder Investment Management North America Inc. provides investment advisory services for the assets in Vanguard International Explorer Fund.

- Vanguard provides investment advisory services to the Vanguard High Dividend Yield Index Fund.

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- William Blair & Company, L.L.C. provides investment advisory services for a portion of the assets in Vanguard Mid-Cap Growth Fund.

For funds that are advised by independent third-party advisory firms unaffiliated with Vanguard, Vanguard hires investment advisory firms, not individual portfolio managers, to provide investment advisory services to such funds. Vanguard negotiates each advisory agreement, which contains advisory fee arrangements, on an arms-length basis with the advisory firm. Each advisory agreement is reviewed annually by each fund's board of trustees, taking into account numerous factors, which include, without limitation, the nature, extent, and quality of the services provided, investment performance, and fair market value of services provided. Each advisory agreement is between the fund and the advisory firm, not between the fund and the portfolio manager. The structure of the advisory fee paid to each unaffiliated investment advisory firm is described in the following sections. In addition, each firm has established policies and procedures designed to address the potential for conflicts of interest. Each firm's compensation structure and management of potential conflicts of interest is summarized by the advisory firm in the following sections for the period ended October 31, 2007.

I. VANGUARD SELECTED VALUE FUND

Vanguard Selected Value Fund uses a multimanager approach; the Fund currently has two investment advisors, Barrow, Hanley, Mewhinney & Strauss, Inc. and Donald Smith & Co., Inc.

The Fund has entered into investment advisory agreements with its advisors to manage the investment and reinvestment of the portion of the Selected Value Fund's assets that the Fund's board of trustees determines to assign to each advisor. Hereafter, each portion is referred to as the Portfolio. In this capacity, each advisor continuously reviews, supervises, and administers the Portfolio's investment program. Each advisor discharges its responsibilities subject to the supervision and oversight of Vanguard's Portfolio Review Group and the officers and trustees of the Fund. Vanguard's Portfolio Review Group is responsible for recommending changes in a fund's advisory arrangements to the fund's board of trustees, including changes in the amount of assets allocated to each advisor, and whether to hire, terminate, or replace an advisor.

The Fund pays each advisor a basic advisory fee at the end of each of the Fund's fiscal quarters, calculated by applying a quarterly rate, based on certain annual percentage rates, to the average daily net assets of the advisor's Portfolio for the quarter. The basic fee will be increased or decreased by applying a performance fee adjustment based on the investment performance of the advisor's portfolio relative to the investment performance of the Russell Midcap Value Index (for Barrow, Hanley) and the MSCI Investable Market 2500 Index (for Donald Smith & Co.) (for each: the Index). The investment performance will be based on the cumulative total return of the Portfolio over a trailing 36-month period (60-month period for Donald Smith & Co.) ending with the applicable quarter, compared with the cumulative total return of the Index for the same period.

During the fiscal years ended October 31, 2005, 2006, and 2007, Vanguard Selected Value Fund incurred aggregate investment advisory fees of $6,188,000 (before a performance-based decrease of $718,000), $9,076,000 (before a performance-based decrease of $2,010,000), and $11,003,000 (before a performance-based decrease of $950,000), respectively.

A. BARROW, HANLEY, MEWHINNEY & STRAUSS, INC. (BARROW, HANLEY)

Barrow, Hanley, a Nevada corporation, is an investment management firm founded in 1979, which provides investment advisory services to individuals, employee benefits plans, investment companies, and other institutions. Barrow, Hanley is a subsidiary of Old Mutual Asset Managers (US) LLC, which is a subsidiary of Old Mutual plc, based in London, England.

1. OTHER ACCOUNTS MANAGED

James P. Barrow co-manages a portion of the Selected Value Fund; as of October 31,2007, the Fund held assets of $5.0 billion. As of October 31, 2007, Mr. Barrow managed 13 other registered investment companies with total assets of $37 billion (including two with total assets of $33.7 billion where the advisory firm's fee was based on account performance) and 31 other accounts with total assets of $3.5 billion.

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Mark Giambrone co-manages a portion of the Selected Value Fund; as of October 31, 2007, the Fund held assets of $5.0 billion. As of October 31, 2007, Mr. Giambrone managed eight other registered investment companies with total assets of $414 million, and 22 other accounts with total assets of $1.7 billion.

2. MATERIAL CONFLICTS OF INTEREST

Actual or potential conflicts of interest may arise when a portfolio manager has management responsibilities to more than one account (including the Selected Value Fund). Barrow, Hanley manages potential conflicts between funds or with other types of accounts through allocation policies and procedures, internal review processes, and oversight by directors and independent third parties to ensure that no client, regardless of type or fee structure, is intentionally favored at the expense of another. Allocation policies are designed to address potential conflicts in situations where two or more funds or accounts participate in investment decisions involving the same securities. Barrow, Hanley does not manage any private accounts.

3. DESCRIPTION OF COMPENSATION

In addition to base salary, all Barrow, Hanley portfolio managers and analysts share in a bonus pool that is distributed semiannually. Analysts and portfolio managers are rated on their value added to the team-oriented investment process. Overall compensation applies with respect to all accounts managed and compensation does not differ with respect to distinct accounts managed by a portfolio manager. Compensation is not tied to a published or private benchmark. It is important to understand that contributions to the overall investment process may include not recommending securities in an analyst's sector if there are no compelling opportunities in the industries covered by that analyst.

The compensation of portfolio managers is not directly tied to fund performance or growth in assets for any fund or other account managed by a portfolio manager and portfolio managers are not compensated for bringing in new business. Of course, growth in assets from the appreciation of existing assets and/or growth in new assets will increase revenues and profit. The consistent, long-term growth in assets at any investment firm is, to a great extent, dependent upon the success of the portfolio management team. The compensation of the portfolio management team at Barrow, Hanley will increase over time, if and when assets continue to grow through competitive performance.

4. OWNERSHIP OF SECURITIES

As of October 31, 2007, Mr. Barrow owned shares of the Selected Value Fund in an amount exceeding $1 million, and Mr. Giambrone owned shares of the Fund within the $100,001-$500,000 range.

B. DONALD SMITH & CO., INC. (DONALD SMITH & CO.)

Donald Smith & Co., founded in 1975 as Home Portfolio Advisors and renamed Donald Smith & Co., Inc., in 1984, manages assets for institutional clients. Donald Smith & Co. is 100% owned by active employees, all of whom are members of the investment team.

1. OTHER ACCOUNTS MANAGED

Donald G. Smith and Richard L. Greenberg jointly manage a portion of the Selected Value Fund; as of October 31, 2007, the Fund held assets of $5.0 billion. As of October 31, 2007, each portfolio manager jointly managed three other registered investment companies with total assets of $722 million and 39 other accounts with total assets of $2.7 billion, including one with total assets of $251 million where the advisory firm's fee was based on account performance.

2. MATERIAL CONFLICTS OF INTEREST

Donald Smith & Co. is an independent investment advisor with no parent or subsidiary organizations. Additionally, it has no affiliated organizations, brokerage, or investment banking activities.

Clients include mutual funds, public and corporate pension plans, endowments and foundations, and other separate accounts. Because the portfolio managers manage other accounts in addition to the Fund, conflicts of interest may arise in connection with the portfolio manager's management of the Fund's investment on the one hand and the investments of such other accounts on the other hand. Donald Smith & Co. has put in place systems, policies, and procedures, which have been designed to maintain fairness in portfolio management across all clients. Potential conflicts between the Fund

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and other types of accounts are managed in accordance with trade aggregation and allocation policies and procedures, internal review processes, and direct oversight by Donald G. Smith, President.

3. DESCRIPTION OF COMPENSATION

All Donald Smith & Co. employees are compensated in accordance with incentive plans. The compensation for portfolio managers/analysts consists of a base salary, a partnership interest in the firm's profits, and possibly an additional, discretionary bonus. This discretionary bonus can exceed 100% of the base salary if performance of the portfolio manager/analyst's "theoretical portfolio" exceeds established benchmarks. Currently each theoretical portfolio is compared to a relevant Russell Index, measured over a one-year period. Donald Smith & Co. 's benchmark for the Selected Value Fund is the MSCI Investable Market 2500 Index. Additional distribution of firm ownership is a strong motivation for continued employment at Donald Smith & Co.

4. OWNERSHIP OF SECURITIES

As of October 31, 2007, Mr. Smith and Mr. Greenberg owned no shares of the Selected Value Fund.

II. VANGUARD INTERNATIONAL EXPLORER FUND

Schroder Investment Management North America Inc. (Schroders) is a wholly owned subsidiary of Schroder U.S. Holdings Inc., which currently engages through its subsidiary firms in the asset management business. U.S. Holdings Inc., is an indirect, wholly owned U.S. subsidiary of Schroders plc, a publicly owned holding company organized under the laws of England.

The Fund has entered into an investment advisory agreement with Schroders to manage the investment and reinvestment of the Fund's assets. In this capacity, Schroders continuously reviews, supervises, and administers the Fund's investment program. Schroders discharges its responsibilities subject to the supervision and oversight of Vanguard's Portfolio Review Group and the officers and trustees of the Fund. Vanguard's Portfolio Review Group is responsible for recommending changes in a fund's advisory arrangements to the fund's board of trustees, including changes in the amount of assets allocated to each advisor, and whether to hire, terminate, or replace an advisor.

Under this agreement, the Fund pays Schroders, at the end of each of the Fund's fiscal quarters, a basic fee calculated by applying a quarterly rate, based on certain annual percentage rates, to the Fund's average daily net assets for the quarter. The basic fee will be increased or decreased by applying a performance fee adjustment based on the investment performance of the Fund relative to the investment performance of the S&P/Citigroup Extended Market EPAC Index (the Index). The investment performance of the Fund will be based on its cumulative total return over a trailing 36-month period ending with the applicable quarter, compared with the cumulative total return of the Index for the same period.

SUB-ADVISOR--SCHRODER INVESTMENT MANAGEMENT NORTH AMERICA LIMITED. The Fund has entered into a sub-advisory agreement with Schroders and Schroder Investment Management North America Limited (Schroder Limited) pursuant to which Schroder Limited has primary responsibility for choosing investments for the Fund.

Under the terms of the sub-advisory agreement for the Fund, Schroders pays Schroder Limited advisory fees equal to 50% of the advisory fee actually paid to Schroders under its investment advisory agreement with the Fund.

During the fiscal years ended October 31, 2005, 2006, and 2007, Vanguard International Explorer Fund incurred investment advisory fees of $4,122,000 (before a performance-based increase of $461,000), $4,899,000 (before a performance based increase of $614,000), and $5,669,000, respectively.

1. OTHER ACCOUNTS MANAGED

Matthew Dobbs manages the International Explorer Fund, which, as of October 31, 2007, held assets of $3.3 billion. As of October 31, 2007, Mr. Dobbs managed five other registered investment companies with total assets of $13.4 billion (including two with total assets of $12.7 billion where the advisory firm's fee was based on account performance), seven other pooled investment vehicles with total assets of $2.3 billion (including one with total assets of $545 million where the advisory firm's fee was based on account performance), and five other accounts with total assets of $3.4 billion.

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2. MATERIAL CONFLICTS OF INTEREST

Whenever the portfolio manager of the International Explorer Fund manages other accounts, potential conflicts of interest exist, including potential conflicts between the investment strategy of the Fund and the investment strategy of the other accounts. For example, in certain instances, a portfolio manager may take conflicting positions in a particular security for different accounts, by selling a security for one account and continuing to hold it for another account. In addition, the fact that other accounts require the portfolio manager to devote less than all of his or her time to the Fund may be seen itself to constitute a conflict with the interest of the Fund.

The portfolio manager may also execute transactions for another fund or account at the direction of such fund or account that may adversely impact the value of securities held by the Fund. Securities selected for funds or accounts other than the Fund may outperform the securities selected for the Fund. Finally, if the portfolio manager identifies a limited investment opportunity that may be suitable for more than one fund or other account, the Fund may not be able to take full advantage of that opportunity due to an allocation of that opportunity across all eligible funds and accounts.

At Schroders, individual portfolio managers may manage multiple accounts for multiple clients. In addition to mutual funds, these other accounts may include separate accounts, collective trusts, or offshore funds. Certain of these accounts may pay a performance fee, and portfolio managers may have an incentive to allocate investment to these accounts.

Schroders manages potential conflicts between funds or with other types of accounts through allocation policies and procedures, internal review processes, and oversight by directors. Schroders has developed trade allocation systems and controls to ensure that no one client, regardless of type, is intentionally favored at the expense of another. Allocation policies are designed to address potential conflicts in situations where two or more funds or accounts participate in investment decisions involving the same securities.

The structure of each portfolio manager's compensation may give rise to potential conflicts of interest. Each portfolio manager's base pay tends to increase with additional and more complex responsibilities that include increased assets under management, which indirectly links compensation to sales.

Schroders has adopted certain compliance procedures that are designed to address these, and other, types of conflicts. However, there is no guarantee that such procedures will detect each and every situation where a conflict arises.

3. DESCRIPTION OF COMPENSATION

Schroders fund managers are paid in a combination of base salary and annual discretionary bonus, as well as the standard retirement, health, and welfare benefits available to all of our employees. Certain of the most senior managers also participate in a long-term incentive program.

Generally, portfolio managers employed by Schroders, including Mr. Dobbs, receive compensation based on the factors discussed below.

Base salary is determined by reference to the level of responsibility inherent in the role and the experience of the incumbent, and is benchmarked annually against market data to ensure that Schroders is paying competitively. The base salary is subject to an annual review, and will increase if market movements make this necessary and/or if there has been an increase in the employee's responsibilities. At more senior levels, base salaries tend to move less as the emphasis is increasingly on the discretionary bonus.

Discretionary bonuses for fund managers are determined by a number of factors. At a macro level the total amount available to spend is a function of the compensation to revenue ratio achieved by the firm globally. Schroders then assess the performance of the division and of the team to determine the share of the aggregate bonus pool that is spent in each area. This focus on "team" maintains consistency and minimizes internal competition that may be detrimental to the interests of our clients. For individual fund managers, Schroders assess the performance of their funds relative to competitors and to the relevant benchmarks over one and three year periods, the level of funds under management, and the level of performance fees generated. Schroders also reviews "softer" factors such as leadership, contribution to other parts of the business, and adherence to our corporate values of excellence, integrity, teamwork, passion, and innovation.

For those employees receiving significant bonuses, a part may be deferred in the form of Schroders plc stock. This vests over a period of three years and ensures that the interests of the employee are aligned with those of the shareholder, and that these key employees have an increasing incentive to remain with us as their store of unvested awards grows over time.

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4. OWNERSHIP OF SECURITIES

As of October 31, 2007, Mr. Dobbs owned no shares of the International Explorer Fund.

III. VANGUARD MID-CAP GROWTH FUND

Vanguard Mid-Cap Growth Fund uses a multimanager approach; the Fund currently has two investment advisors, Chartwell Investment Partners, L.P. and William Blair & Company, L.L.C. The Trust previously employed Provident Investment Counsel, Inc., to manage all of the Mid-Cap Growth Fund's assets from inception through January 31, 2006, and a portion of the Fund's assets from February 1, 2006, through June 7, 2006.

The Fund has entered into investment advisory agreements with its advisors to manage the investment and reinvestment of the portion of the Mid-Cap Growth Fund's assets that the Fund's board of trustees determines to assign to each advisor. Hereafter, each portion is referred to as the Portfolio). In this capacity, each advisor continuously reviews, supervises, and administers the Portfolio's investment program. Each advisor discharges its responsibilities subject to the supervision and oversight of Vanguard's Portfolio Review Group and the officers and trustees of the Fund. Vanguard's Portfolio Review Group is responsible for recommending changes in a fund's advisory arrangements to the fund's board of trustees, including changes in the amount of assets allocated to each advisor, and whether to hire, terminate, or replace an advisor.

The Fund pays each advisor a basic advisory fee at the end of each of the Fund's fiscal quarters, calculated by applying a quarterly rate, based on certain annual percentage rates, to the average daily net assets of the advisor's Portfolio for the quarter. The basic fee will be increased or decreased by applying a performance fee adjustment based on the investment performance of the Portfolio relative to the investment performance of the Russell Midcap Growth Index (the Index). The investment performance of the portfolio will be based on the cumulative total return over a trailing 36-month period (60-month period for William Blair & Company) ending with the applicable quarter, compared with the cumulative total return of the Index for the same period.

During the fiscal years ended October 31, 2005, 2006, and 2007, Vanguard Mid-Cap Growth Fund incurred investment advisory fees of $1,224,000 (before a performance-based decrease of $455,000), $1,694,000 (before a performance based decrease of $299,000), and $2,302,000 (before a performance-based increase of $279,000), respectively.

A. CHARTWELL INVESTMENT PARTNERS, L.P. (CHARTWELL)

Chartwell is a Pennsylvania limited partnership.

1. OTHER ACCOUNTS MANAGED

The management of and investment decisions for the Chartwell Portfolio are made by the Chartwell Growth Group, of which Edward N. Antoian and Mark J. Cunneen are senior members.

The Chartwell Growth Group manages a portion of the Mid-Cap Growth Fund; as of October 31, 2007, the Fund held assets of $1.3 billion. As of October 31, 2007, the Group managed one other pooled investment vehicle with total assets of $16 million and 52 other accounts with total assets of $1.4 billion. In addition, as of October 31, 2007, Mr. Antoian solely managed one other pooled investment vehicle with total assets of $233 million.

2. MATERIAL CONFLICTS OF INTEREST

With the exception of a hedge fund managed by Mr. Antoian (discussed below), all portfolios are managed in like-style, except for possible client-imposed portfolio restrictions, there are no material conflicts of interest that may arise in connection with simultaneous management of the Chartwell Portfolio and such other accounts. In the allocation of investment opportunities, unless prohibited by client guidelines, trade orders for multiple portfolios in a given investment product are generally "batched" or placed as an aggregated order for execution. Placing an aggregate order may enable Chartwell to obtain more favorable execution and net price for the combined order. All portfolios included in an aggregated trade are allocated the same average price per share. If in fact there are multiple orders on the trade blotter for the same security that can not be aggregated due to client restrictions, a simple rotational system is implemented.

Proprietary Accounts: Certain new investment products developed begin as incubator funds and, in some cases, are funded by internal officers, directors, partners, and portfolio managers' personal assets. These new products are traded exactly the same as regular client accounts except they do not participate in IPO's. Such accounts are not favored over

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any other account. The Compliance Group monitors all activity in these accounts regularly. No investment or performance fees are received by the investors nor the firm. Once sufficient client assets are raised in the product, the incubator is closed. Our Code of Ethics requires disclosure of any Private Placement investments by all employees including firm incubator funds.

Hedge Fund: Mr. Antoian manages a hedge fund. There is generally a limited amount of overlap of investments between the hedge fund and all other accounts listed above that are managed by the Chartwell Growth Group (client accounts). Investment opportunities that are appropriate for both the client accounts as well as the hedge fund are allocated on a pro-rata basis and no one account is favored over another when participating in the same trade. When investment opportunities are of a limited nature (such as IPO's), shares are allocated on a pro-rata basis for all accounts for which the investment is appropriate; if an allocation from the broker(s) is too small to satisfy a 0.05% position in the participating accounts, a rotational system is deployed. The holdings of the hedge fund and all client accounts, and all IPO allocations, are reviewed by Compliance to ensure that controls are working properly.

Other rules to prevent conflicts of interest: No portfolio manager shall initiate a short sale in an investment account when a registered fund or other investment account either holds, or intends to acquire, a long position in the security. If an investment account has an existing short position in a security that is subsequently purchased as a long position in any other client account, the portfolio manager is prohibited from initiating further short sales and any purchases of the security shall be allocated in a fair and equitable manner in accordance with the firm's trade allocation policies.

3. DESCRIPTION OF COMPENSATION

The compensation paid to a Chartwell portfolio manager consists of base salary, annual bonus, and ownership distributions. A portfolio manager's base salary is determined by Chartwell's Compensation Committee and is reviewed at least annually. A portfolio manager's experience, historical performance, and role in firm or product team management are the primary considerations in determining the base salary. Industry benchmarking is utilized by the Compensation Committee on an annual basis.

Annual bonuses are determined by the Compensation Committee based on a number of factors. The primary factor is a performance-based compensation schedule that is applied to all accounts managed by a portfolio manager within a particular investment product, and is not specific to any one account. The bonus is calibrated based on the gross composite performance (before taxes) of such accounts for 1-year and 3-year periods (where applicable) versus (1) the appropriate benchmark (the Russell 2000 Growth Index for small-cap growth portfolios and the Russell Midcap Growth Index for mid-cap growth portfolios), and (2) peer group rankings by product category. The bonus also considers the individual's stock selection performance as it relates to sector responsibilities versus sector performance within the appropriate benchmark. Portfolio construction, sector and security weighting, and performance are reviewed by the Compliance Committee and Compensation Committee to prevent a manager from taking undue risks. Additional factors used to determine the annual bonus include the portfolio manager's contribution as an analyst, product team management, and contribution to the strategic planning and development of the investment group as well as the firm.

Ownership distributions are paid to a portfolio manager based on the portfolio manager's ownership interest, or percentage limited partnership interest, in Chartwell multiplied by total net cash distributions paid during the year.

4. OWNERSHIP OF SECURITIES

As of October 31, 2007, Mr. Cunneen owned shares of the Mid-Cap Growth Fund within the $100,001-$500,000 range, and Mr. Antoian owned no shares of the Fund.

B. WILLIAM BLAIR & COMPANY, L.L.C. (WILLIAM BLAIR & COMPANY)

William Blair & Company is an independently owned full-service investment advisory firm founded in 1935. William Blair & Company is organized as a Delaware limited liability company.

1. OTHER ACCOUNTS MANAGED

Harvey H. Bundy co-manages a portion of Vanguard Mid-Cap Growth Fund; as of October 31, 2007, the Fund held assets of $1.3 billion. As of October 31, 2007, Mr. Bundy co-managed two other registered investment company with total assets of $173 million, one other pooled investment vehicle with total assets of $163 million, and 68 other accounts with total assets of $3.7 billion.

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Robert C. Lanphier co-manages a portion of Vanguard Mid-Cap Growth Fund; as of October 31, 2007, the Fund held assets of $1.3 billion. As of October 31, 2007, Mr. Lanphier co-managed two other registered investment company with total assets of $173 million, one other pooled investment vehicle with total assets of $163 million, and 53 other accounts with total assets of $3.8 billion.

David Ricci co-manages a portion of Vanguard Mid-Cap Growth Fund; as of October 31, 2007, the Fund held assets of $1.3 billion. As of October 31, 2007, Mr. Ricci co-managed one other registered investment company with total assets of $45 million and 15 other accounts with total assets of $1.4 billion.

2. MATERIAL CONFLICTS OF INTEREST

Because each portfolio manager manages other accounts in addition to Vanguard Mid-Cap Growth Fund, conflicts of interest may arise in connection with a portfolio manager's management of Vanguard Mid-Cap Growth Fund's investments on the one hand and the investments of such other accounts on the other hand. However, William Blair & Company has adopted policies and procedures designed to address such conflicts, including policies and procedures relating to allocation of investment opportunities and aggregation of trades.

3. DESCRIPTION OF COMPENSATION

The compensation of William Blair & Company portfolio managers is based on the firm's mission: "to achieve success for its clients." The portfolio manager is a principal of William Blair & Company, and as of October 31, 2007, his compensation consisted of a fixed base salary, a share of the firm's profits and, in some instances, a discretionary bonus. The portfolio manager's discretionary bonus as well as any potential changes to the principal's ownership stake is determined by the head of William Blair & Company's Investment Management Department, subject to the approval of the firm's Executive Committee and is based entirely on a qualitative assessment rather than a formula. The discretionary bonus rewards the specific accomplishments in the prior year, including short-term and long-term investment performance, quality of research ideas, and other contributions to the firm and its clients. Changes in ownership stake are based upon the portfolio manager's sustained, multi-year contribution to long-term investment performance, and to the firm's revenue, profitability, intellectual capital, and brand reputation. The compensation process is a subjective one that takes into account the factors described above. Portfolio managers do not receive any direct compensation based upon the performance of any individual client account and no indices are used to measure performance. In addition, there is no particular weighting or formula for evaluating the factors.

4. OWNERSHIP OF SECURITIES

As of October 31, 2007, Messrs. Bundy, Lanphier, and Ricci did not own any shares of the Mid-Cap Growth Fund.

IV. VANGUARD HIGH DIVIDEND YIELD INDEX FUND

Vanguard, through its Quantitative Equity Group, provides investment advisory services on an at-cost basis to Vanguard High Dividend Yield Index Fund. The compensation and other expenses of the advisory staff are allocated among the funds utilizing these services.

For the fiscal year ended October 31, 2007, the High Dividend Yield Index Fund's expenses relating to investment advisory services were $6,000.

1. OTHER ACCOUNTS MANAGED

Michael Perre manages the High Dividend Yield Index Fund, which, as of October 31, 2007, held assets of $181 million. As of October 31, 2007, Mr. Perre managed all or a portion of nine other registered investment companies with total assets of $26.2 billion and three other pooled investment vehicles with total assets of $30.6 billion.

2. MATERIAL CONFLICTS OF INTEREST

At Vanguard, individual portfolio managers may manage multiple accounts for multiple clients. In addition to mutual funds, these other accounts may include separate accounts, collective trusts, or offshore funds. Managing multiple accounts may give rise to potential conflicts of interest including, for example, conflicts among investment strategies and conflicts in the allocation of investment opportunities. Vanguard manages potential conflicts between funds or with other types of accounts through allocation policies and procedures, internal review processes, and oversight by directors

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and independent third parties. Vanguard has developed trade allocation procedures and controls to ensure that no one client, regardless of type, is intentionally favored at the expense of another. Allocation policies are designed to address potential conflicts in situations where two or more funds or accounts participate in investment decisions involving the same securities.

3. DESCRIPTION OF COMPENSATION

The Fund's portfolio manager is a Vanguard employee. This section describes the compensation of the Vanguard employees who manage Vanguard mutual funds. As of October 31, 2007, a Vanguard portfolio manager's compensation generally consists of base salary, bonus, and payments under Vanguard's long-term incentive compensation program. In addition, portfolio managers are eligible for the standard retirement benefits and health and welfare benefits available to all Vanguard employees. Also, certain portfolio managers may be eligible for additional retirement benefits under several supplemental retirement plans that Vanguard adopted in the 1980's to restore dollar-for-dollar the benefits of management employees that had been cut back solely as a result of tax law changes. These plans are structured to provide the same retirement benefits as the standard retirement plans.

In the case of portfolio managers responsible for managing multiple Vanguard funds or accounts, the method used to determine their compensation is the same for all funds and investment accounts. A portfolio manager's base salary is determined by the manager's experience and performance in the role, taking into account the ongoing compensation benchmark analyses performed by the Vanguard Human Resources Department. A portfolio manager's base salary is generally a fixed amount that may change as a result of an annual review, upon assumption of new duties, or when a market adjustment of the position occurs.

A portfolio manager's bonus is determined by a number of factors. One factor is gross, pre-tax performance of a fund relative to expectations for how the fund should have performed, given its objective, policies, strategies, and limitations, and the market environment during the measurement period. This performance factor is not based on the value of assets held in the fund's portfolio. For the High Dividend Yield Index Fund, the performance factor depends on how closely the portfolio manager tracks the Fund's benchmark index (FTSE/(R)/ High Dividend Yield Index) over a one-year period. Additional factors include the portfolio manager's contributions to the investment management functions within the sub-asset class, contributions to the development of other investment professionals and supporting staff, and overall contributions to strategic planning and decisions for the investment group. The target bonus is expressed as a percentage of base salary. The actual bonus paid may be more or less than the target bonus, based on how well the manager satisfies the objectives stated above. The bonus is paid on an annual basis.

Under the long-term incentive compensation program, all full-time employees receive a payment from Vanguard's long-term incentive compensation plan based on their years of service, job level and, if applicable, management responsibilities. Each year, Vanguard's independent directors determine the amount of the long-term incentive compensation award for that year based on the investment performance of the Vanguard funds relative to competitors and Vanguard's operating efficiencies in providing services to the Vanguard funds.

4. OWNERSHIP OF SECURITIES

Vanguard employees, including portfolio managers, allocate their investments among the various Vanguard funds based on their own individual investment needs and goals. Vanguard employees as a group invest a sizeable portion of their personal assets in Vanguard funds. As of October 31, 2007, Vanguard employees collectively invested more than $2.2 billion in Vanguard funds. John J. Brennan, Chairman and Chief Executive Officer of Vanguard and the Vanguard funds, and George U. Sauter, Managing Director and Chief Investment Officer, invest substantially all of their personal financial assets in Vanguard funds.

As of October 31, 2007, Mr. Perre owned shares of the High Dividend Yield Index Fund within the $10,001-$50,000 range.

V. DURATION AND TERMINATION OF INVESTMENT ADVISORY AGREEMENTS

The Funds' current agreements with Barrow, Hanley, Chartwell, Donald Smith & Co., Schroders, and William Blair & Company are renewable for successive one-year periods, only if (1) each renewal is approved by a vote of the Fund's board of trustees, including the affirmative votes of a majority of the trustees who are not parties to the contract or "interested persons" (as defined in the 1940 Act) of any such party, cast in person at a meeting called for the purpose of

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considering such approval, or (2) each renewal is specifically approved by a vote of a majority of the Fund's outstanding voting securities. An agreement is automatically terminated if assigned, and may be terminated without penalty at any time either (1) by vote of the board of trustees of the Fund upon thirty
(30) days' written notice to the advisor (sixty (60) days' written notice for Schroders), (2) by a vote of a majority of the Fund's outstanding voting securities upon 30 days' written notice to the advisor (60 days' written notice for Schroders), or (3) by the advisor upon ninety (90) days' written notice to the Fund.

The Fourth Amended and Restated Funds' Service Agreement, which governs the at-cost investment advisory services provided to the High Dividend Yield Index Fund, will continue in full force and effect until terminated or amended by mutual agreement of the Fund and Vanguard.

PORTFOLIO TRANSACTIONS

The advisor decides which securities to buy and sell on behalf of a Fund and then selects the brokers or dealers that will execute the trades on an agency basis or the dealers with whom the trades will be effected on a principal basis. For each trade, the advisor must select a broker-dealer that it believes will provide "best execution." Best execution does not necessarily mean paying the lowest spread or commission rate available. In seeking best execution, the SEC has said that an advisor should consider the full range of a broker-dealer's services. The factors considered by the advisor in seeking best execution include, but are not limited to, the broker-dealer's execution capability, clearance and settlement services, commission rate, trading expertise, willingness and ability to commit capital, ability to provide anonymity, financial responsibility, reputation and integrity, responsiveness, access to underwritten offerings and secondary markets, and access to company management, as well as the value of any research provided by the broker-dealer. In assessing which broker-dealer can provide best execution for a particular trade, the advisor also may consider the timing and size of the order and available liquidity and current market conditions. Subject to applicable legal requirements, the advisor may select a broker based partly on brokerage or research services provided to the advisor and its clients, including the Funds. The advisor may cause a Fund to pay a higher commission than other brokers would charge if the advisor determines in good faith that the amount of the commission is reasonable in relation to the value of services provided. An advisor also may receive brokerage or research services from broker-dealers that are provided at no charge in recognition of the volume of trades directed to the broker. To the extent research services or products may be a factor in selecting brokers, services and products may include written research reports analyzing performance or securities, discussions with research analysts, meetings with corporate executives to obtain oral reports on company performance, market data, and other products and services that will assist the advisor in its investment decision-making process. The research services provided by brokers through which the Fund effects securities transactions may be used by the advisor in servicing all of its accounts, and some of the services may not be used by the advisor in connection with the Fund.

During the fiscal years ended October 31, 2005, 2006, and 2007, the Funds paid the following amounts in brokerage commissions:

FUND 2005 2006 2007
---- ---- ---- ----
Vanguard Selected Value Fund $4,702,000 $3,696,000 $3,413,000
Vanguard International Explorer Fund 2,590,000 2,718,000 4,861,000
Vanguard Mid-Cap Growth Fund 1,090,000 2,172,000 1,408,000
Vanguard High Dividend Yield Index Fund/1/ -- -- 4,529

1 Vanguard High Dividend Yield Index Fund did not commence operations until
 November 2006.

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As of October 31, 2007, each Fund held securities of its "regular brokers or dealers," as that term is defined in Rule 10b-1 of the 1940 Act, as follows:

FUND REGULAR BROKER OR DEALER (OR PARENT) AGGREGATE HOLDINGS
---- ------------------------------------ ------------------
Vanguard High Dividend Yield Index Fund Banc of America Securiites LLC $5,832,000
 Citigroup Global Markets Inc. 5,648,000
Vanguard Selected Value Fund -- --
Vanguard Mid-Cap Growth Fund -- --
Vanguard International Explorer Fund -- --

Some securities that are considered for investment by a Fund may also be appropriate for other Vanguard funds or for other clients served by the advisors. If such securities are compatible with the investment policies of a Fund and one or more of an advisor's other clients, and are considered for purchase or sale at or about the same time, then transactions in such securities will be aggregated by the advisor and the purchased securities or sale proceeds will be allocated among the participating Vanguard funds and the other participating clients of the advisor in a manner deemed equitable by the advisor. Although there may be no specified formula for allocating such transactions, the allocation methods used, and the results of such allocations, will be subject to periodic review by the Funds' board of trustees.

PROXY VOTING GUIDELINES

The Board of Trustees (the Board) of each Vanguard fund that invests in stocks has adopted proxy voting procedures and guidelines to govern proxy voting by the fund. The Board has delegated oversight of proxy voting to the Proxy Oversight Committee (the Committee), made up of senior officers of Vanguard, a majority of whom are also officers of each Vanguard fund, and subject to the operating procedures and guidelines described below. The Committee reports directly to the Board. Vanguard is subject to these guidelines to the extent the guidelines call for Vanguard to administer the voting process and implement the resulting voting decisions, and for these purposes have been approved by the Board of Directors of Vanguard.

The overarching objective in voting is simple: to support proposals and director nominees that maximize the value of a fund's investments--and those of fund shareholders--over the long term. While the goal is simple, the proposals the funds receive are varied and frequently complex. As such, the guidelines adopted by the Board provide a rigorous framework for assessing each proposal. Under the guidelines, each proposal must be evaluated on its merits, based on the particular facts and circumstances as presented.

For ease of reference, the procedures and guidelines often refer to all funds. However, our processes and practices seek to ensure that proxy voting decisions are suitable for individual funds. For most proxy proposals, particularly those involving corporate governance, the evaluation will result in the same position being taken across all of the funds and the funds voting as a block. In some cases, however, a fund may vote differently, depending upon the nature and objective of the fund, the composition of its portfolio, and other factors.

The guidelines do not permit the Board to delegate voting responsibility to a third party that does not serve as a fiduciary for the funds. Because many factors bear on each decision, the guidelines incorporate factors the Committee should consider in each voting decision. A fund may refrain from voting if that would be in the fund's and its shareholders' best interests. These circumstances may arise, for example, when the expected cost of voting exceeds the expected benefits of voting, or exercising the vote results in the imposition of trading or other restrictions.

In evaluating proxy proposals, we consider information from many sources, including but not limited to the investment advisor for the fund, management or shareholders of a company presenting a proposal, and independent proxy research services. We will give substantial weight to the recommendations of the company's board, absent guidelines or other specific facts that would support a vote against management. In all cases, however, the ultimate decision rests with the members of the Proxy Oversight Committee, who are accountable to the fund's Board.

While serving as a framework, the following guidelines cannot contemplate all possible proposals with which a fund may be presented. In the absence of a specific guideline for a particular proposal (e.g., in the case of a transactional issue or contested proxy), the Committee will evaluate the issue and cast the fund's vote in a manner that, in the Committee's view, will maximize the value of the fund's investment, subject to the individual circumstances of the fund.

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I. THE BOARD OF DIRECTORS

A. ELECTION OF DIRECTORS

Good governance starts with a majority-independent board, whose key committees are made up entirely of independent directors. As such, companies should attest to the independence of directors who serve on the Compensation, Nominating, and Audit committees. In any instance in which a director is not categorically independent, the basis for the independence determination should be clearly explained in the proxy statement.

While the funds will generally support the board's nominees, the following factors will be taken into account in determining each fund's vote:

FACTORS FOR APPROVAL FACTORS AGAINST APPROVAL
-------------------- ------------------------
Nominated slate results in board made up of a Nominated slate results in board made up of a majority of non-
majority of independent directors. independent directors.

All members of Audit, Nominating, and Compensation Audit, Nominating, and/or Compensation committees include non-
committees are independent of management. independent members.

 Incumbent board member failed to attend at least 75% of meetings in
 the previous year.

 Actions of committee(s) on which nominee serves are inconsistent with
 other guidelines (e.g., excessive option grants, substantial non-audit
 fees, lack of board independence).

B. CONTESTED DIRECTOR ELECTIONS

In the case of contested board elections, we will evaluate the nominees' qualifications, the performance of the incumbent board, as well as the rationale behind the dissidents' campaign, to determine the outcome that we believe will maximize shareholder value.

C. CLASSIFIED BOARDS

The funds will generally support proposals to declassify existing boards (whether proposed by management or shareholders), and will block efforts by companies to adopt classified board structures, in which only part of the board is elected each year.

II. APPROVAL OF INDEPENDENT AUDITORS

The relationship between the company and its auditors should be limited primarily to the audit, although it may include certain closely related activities that do not, in the aggregate, raise any appearance of impaired independence. The funds will generally support management's recommendation for the ratification of the auditor, except in instances where audit and audit-related fees make up less than 50% of the total fees paid by the company to the audit firm. We will evaluate on a case-by-case basis instances in which the audit firm has a substantial non-audit relationship with the company (regardless of its size relative to the audit fee) to determine whether independence has been compromised.

III. COMPENSATION ISSUES

A. STOCK-BASED COMPENSATION PLANS

Appropriately designed stock-based compensation plans, administered by an independent committee of the board and approved by shareholders, can be an effective way to align the interests of long-term shareholders and the interests of management, employees, and directors. Conversely, the funds oppose plans that substantially dilute their ownership interest in the company, provide participants with excessive awards, or have inherently objectionable structural features.

An independent compensation committee should have significant latitude to deliver varied compensation to motivate the company's employees. However, we will evaluate compensation proposals in the context of several factors (a company's industry, market capitalization, competitors for talent, etc.) to determine whether a particular plan or proposal balances the perspectives of employees and the company's other shareholders. We will evaluate each proposal on a case-by-case basis, taking all material facts and circumstances into account.

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The following factors will be among those considered in evaluating these proposals.

FACTORS FOR APPROVAL FACTORS AGAINST APPROVAL
-------------------- ------------------------
Company requires senior executives to hold a minimum amount of Total potential dilution (including all stock-based plans)
company stock (frequently expressed as a multiple of salary). shares outstanding.

Company requires stock acquired through option exercise to be held Annual option grants have exceeded 2% of shares
for a certain period of time. outstanding.

Compensation program includes performance-vesting awards, indexed Plan permits repricing or replacement of options without
options, or other performance-linked grants. shareholder approval.

Concentration of option grants to senior executives is limited Plan provides for the issuance of reload options.
(indicating that the plan is very broad-based).

Stock-based compensation is clearly used as a substitute for cash in Plan contains automatic share replenishment (evergreen)
delivering market-competitive total pay. feature.

B. BONUS PLANS

Bonus plans, which must be periodically submitted for shareholder approval to qualify for deductibility under Section 162(m) of the IRC, should have clearly defined performance criteria and maximum awards expressed in dollars. Bonus plans with awards that are excessive, in both absolute terms and relative to a comparative group, generally will not be supported.

C. EMPLOYEE STOCK PURCHASE PLANS

The funds will generally support the use of employee stock purchase plans to increase company stock ownership by employees, provided that shares purchased under the plan are acquired for no less than 85% of their market value and that shares reserved under the plan make up less than 5% of the outstanding shares.

D. EXECUTIVE SEVERANCE AGREEMENTS (GOLDEN PARACHUTES)

While executives' incentives for continued employment should be more significant than severance benefits, there are instances--particularly in the event of a change in control--in which severance arrangements may be appropriate. Severance benefits triggered by a change in control that do not exceed three times an executive's salary and bonus may generally be approved by the compensation committee of the board without submission to shareholders. Any such arrangement under which the beneficiary receives more than three times salary and bonus--or where severance is guaranteed absent a change in control--should be submitted for shareholder approval.

IV. CORPORATE STRUCTURE AND SHAREHOLDER RIGHTS

The exercise of shareholder rights, in proportion to economic ownership, is a fundamental privilege of stock ownership that should not be unnecessarily limited. Such limits may be placed on shareholders' ability to act by corporate charter or by-law provisions, or by the adoption of certain takeover provisions. In general, the market for corporate control should be allowed to function without undue interference from these artificial barriers.

The funds' positions on a number of the most commonly presented issues in this area are as follows:

A. SHAREHOLDER RIGHTS PLANS (POISON PILLS)

A company's adoption of a so-called poison pill effectively limits a potential acquirer's ability to buy a controlling interest without the approval of the target's board of directors. Such a plan, in conjunction with other takeover defenses, may serve to entrench incumbent management and directors. However, in other cases, a poison pill may force a suitor to negotiate with the board and result in the payment of a higher acquisition premium.

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In general, shareholders should be afforded the opportunity to approve shareholder rights plans within a year of their adoption. This provides the board with the ability to put a poison pill in place for legitimate defensive purposes, subject to subsequent approval by shareholders. In evaluating the approval of proposed shareholder rights plans, we will consider the following factors:

FACTORS FOR APPROVAL FACTORS AGAINST APPROVAL
-------------------- ------------------------
Plan is relatively short-term (3-5 years). Plan is long term (>5 years).

Plan requires shareholder approval Renewal of plan is automatic or does not require shareholder approval.
for renewal.

Plan incorporates review by a committee Ownership trigger is less than 15%.
of independent directors at least
every three years (so-called TIDE
provisions).

Plan includes permitted bid/qualified offer Classified board.
feature (chewable pill) that mandates
shareholder vote in certain situations.

Ownership trigger is reasonable (15-20%). Board with limited independence.

Highly independent, non-classified board.

B. CUMULATIVE VOTING

The funds are generally opposed to cumulative voting under the premise that it allows shareholders a voice in director elections that is disproportionate to their economic investment in the corporation.

C. SUPERMAJORITY VOTE REQUIREMENTS

The funds support shareholders' ability to approve or reject matters presented for a vote based on a simple majority. Accordingly, the funds will support proposals to remove supermajority requirements and oppose proposals to impose them.

D. RIGHT TO CALL MEETINGS AND ACT BY WRITTEN CONSENT

The funds support shareholders' right to call special meetings of the board (for good cause and with ample representation) and to act by written consent. The funds will generally vote for proposals to grant these rights to shareholders and against proposals to abridge them.

E. CONFIDENTIAL VOTING

The integrity of the voting process is enhanced substantially when shareholders (both institutions and individuals) can vote without fear of coercion or retribution based on their votes. As such, the funds support proposals to provide confidential voting.

F. DUAL CLASSES OF STOCK

We are opposed to dual class capitalization structures that provide disparate voting rights to different groups of shareholders with similar economic investments. We will oppose the creation of separate classes with different voting rights and will support the dissolution of such classes.

V. CORPORATE AND SOCIAL POLICY ISSUES

Proposals in this category, initiated primarily by shareholders, typically request that the company disclose or amend certain business practices. The Board generally believes that these are "ordinary business matters" that are primarily the responsibility of management and should be evaluated and approved solely by the corporation's board of directors. Often, proposals may address concerns with which the Board philosophically agrees, but absent a compelling economic impact on shareholder value (e.g., proposals to require expensing of stock options), the funds will typically abstain from voting on these proposals. This reflects the belief that regardless of our philosophical perspective on the issue, these decisions should be the province of company management unless they have a significant, tangible impact on the value of a fund's investment and management is not responsive to the matter.

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VI. VOTING IN FOREIGN MARKETS

Corporate governance standards, disclosure requirements, and voting mechanics vary greatly among the markets outside the United States in which the funds may invest. Each fund's votes will be used, where applicable, to advocate for improvements in governance and disclosure by each fund's portfolio companies. We will evaluate issues presented to shareholders for each fund's foreign holdings in the context with the guidelines described above, as well as local market standards and best practices. The funds will cast their votes in a manner believed to be philosophically consistent with these guidelines, while taking into account differing practices by market. In addition, there may be instances in which the funds elect not to vote, as described below.

Many foreign markets require that securities be "blocked" or reregistered to vote at a company's meeting. Absent an issue of compelling economic importance, we will generally not subject the fund to the loss of liquidity imposed by these requirements.

The costs of voting (e.g., custodian fees, vote agency fees) in foreign markets may be substantially higher than for U.S. holdings. As such, the fund may limit its voting on foreign holdings in instances where the issues presented are unlikely to have a material impact on shareholder value.

VII. VOTING ON A FUND'S HOLDINGS OF OTHER VANGUARD FUNDS

Certain Vanguard funds (owner funds) may, from time to time, own shares of other Vanguard funds (underlying funds). If an underlying fund submits a matter to a vote of its shareholders, votes for and against such matters on behalf of the owner funds will be cast in the same proportion as the votes of the other shareholders in the underlying fund.

VIII. THE PROXY VOTING GROUP

The Board has delegated the day-to-day operations of the funds' proxy voting process to the Proxy Voting Group, which the Committee oversees. While most votes will be determined, subject to the individual circumstances of each fund, by reference to the guidelines as separately adopted by each of the funds, there may be circumstances when the Proxy Voting Group will refer proxy issues to the Committee for consideration. In addition, at any time, the Board has the authority to vote proxies, when, in the Board's or the Committee's discretion, such action is warranted.

The Proxy Voting Group performs the following functions: (1) managing proxy voting vendors; (2) reconciling share positions; (3) analyzing proxy proposals using factors described in the guidelines; (4) determining and addressing potential or actual conflicts of interest that may be presented by a particular proxy; and (5) voting proxies. The Proxy Voting Group also prepares periodic and special reports to the Board, and any proposed amendments to the procedures and guidelines.

IX. THE PROXY OVERSIGHT COMMITTEE

The Board, including a majority of the independent trustees, appoints the members of the Committee who are senior officers of Vanguard, a majority of whom are also officers of each Vanguard fund.

The Committee does not include anyone whose primary duties include external client relationship management or sales. This clear separation between the proxy voting and client relationship functions is intended to eliminate any potential conflict of interest in the proxy voting process. In the unlikely event that a member of the Committee believes he or she might have a conflict of interest regarding a proxy vote, that member must recuse him or herself from the committee meeting at which the matter is addressed, and not participate in the voting decision.

The Committee works with the Proxy Voting Group to provide reports and other guidance to the Board regarding proxy voting by the funds. The Committee has an obligation to conduct its meetings and exercise its decision-making authority subject to the fiduciary standards of good faith, fairness and Vanguard's Code of Ethics. The Committee shall authorize proxy votes that the Committee determines, in its sole discretion, to be in the best interests of each fund's shareholders. In determining how to apply the guidelines to a particular factual situation, the Committee may not take into account any interest that would conflict with the interest of fund shareholders in maximizing the value of their investments.

The Board may review these procedures and guidelines and modify them from time to time. The procedures and guidelines are available on Vanguard's website at www.vanguard.com.

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You may obtain a free copy of a report that details how the funds voted the proxies relating to the portfolio securities held by the funds for the prior 12-month period ended June 30 by logging on to Vanguard's internet site, at www.vanguard.com, or the SEC's website at www.sec.gov.

INFORMATION ABOUT THE ETF SHARE CLASS

Vanguard High Dividend Yield Index Fund (the ETF Fund) offers and issues an exchange-traded class of shares called ETF Shares. The ETF Fund issues ETF Shares in large blocks, known as "Creation Units." To purchase or redeem a Creation Unit, you must be an Authorized Participant or you must do so through a broker that is an Authorized Participant. An Authorized Participant is a participant in the Depository Trust Company (the DTC) that has executed a Participant Agreement with Vanguard Marketing Corporation, the Fund's Distributor.

The ETF Fund issues Creation Units in kind, in exchange for a basket of stocks that are part of--or soon to be part of--its target index (Deposit Securities).The ETF Fund also redeems Creation Units in kind; an investor who tenders a Creation Unit will receive, as redemption proceeds, a basket of stocks that are part of the Fund's portfolio holdings (Redemption Securities). The Deposit Securities and the Redemption Securities will usually, but may not necessarily always, be the same. As part of any creation or redemption transaction, the investor will either pay or receive some cash in addition to the securities, as described more fully below. The ETF Fund reserves the right to issue Creation Units for cash, rather than in kind, although it has no current intention of doing so.

EXCHANGE LISTING AND TRADING

The ETF Shares have been approved for listing on a national securities exchange and will trade on the exchange at market prices that may differ from net asset value. There can be no assurance that, in the future, ETF Shares will continue to meet all of the exchange's listing requirements. The exchange may, but is not required to, delist the Fund's ETF Shares from listing if: (1) following the initial 12-month period beginning upon the commencement of trading, there are fewer than 50 beneficial owners of the ETF Shares for 30 or more consecutive trading days; (2) the value of the target index tracked by the Fund is no longer calculated or available; or (3) such other event shall occur or condition exist that, in the opinion of the exchange, makes further dealings on the exchange inadvisable. The exchange will also delist the Fund's ETF Shares upon termination of the ETF Share class.

As with any stock traded on an exchange, purchases and sales of ETF Shares will be subject to usual and customary brokerage commissions.

CONVERSIONS AND EXCHANGES

Owners of conventional shares issued by the ETF Fund (Investor Shares) may convert those shares into ETF Shares of equivalent value of the same Fund. Note:
Investors who own conventional shares through a 401(k) plan or other employer-sponsored retirement or benefit plan may not convert those shares into ETF Shares. Vanguard will impose a charge on conversion transactions and reserves the right, in the future, to limit or terminate the conversion privilege. ETF Shares, whether acquired through a conversion or purchased in the secondary market, cannot be converted into shares of another class of the same Fund.

Investors that are not Authorized Participants must hold ETF Shares in a brokerage account. Thus, before converting conventional shares into ETF Shares, an investor must have an existing, or open a new, brokerage account. To initiate a conversion of conventional shares into ETF Shares, an investor must contact his or her broker. The broker may charge a fee, over and above Vanguard's fee, to process a conversion request.

Converting conventional shares into ETF Shares generally is accomplished as follows. First, after the broker notifies Vanguard of an investor's request to convert, Vanguard will transfer conventional shares from the investor's account with Vanguard to the broker's omnibus account with Vanguard (an account maintained by the broker on behalf of all its customers who hold conventional Vanguard fund shares through the broker). At this point, Vanguard will no longer have any record of the investor; his or her ownership of conventional shares and ETF Shares will be known only to his or her broker. Next, the broker will instruct Vanguard to convert the appropriate number or dollar amount of conventional shares in its omnibus account into ETF Shares of equivalent value, based on the respective net asset values of the two share classes. The Fund's transfer agent will reflect ownership of all ETF Shares in the name of the DTC. The DTC will keep track of which ETF Shares belong to the broker and the broker, in turn, will keep track of which ETF Shares belong to its

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customers. Because the DTC is unable to handle fractional shares, only whole shares will be converted. For example, if the investor owned 300.250 conventional shares, and this was equivalent in value to 90.750 ETF Shares, the DTC account would receive 90 ETF Shares. Conventional shares worth 0.750 ETF Shares (in this example, that would be 2.481 conventional shares) would remain in the broker's omnibus account with Vanguard. The broker then could either (1) take certain internal actions necessary to credit the investor's account with
0.750 ETF Shares rather than 2.481 conventional shares, or (2) redeem the 2.481 conventional shares at net asset value, in which case the investor would receive cash in lieu of those shares. If the broker chooses to redeem the conventional shares, the investor will realize a gain or loss on the redemption that must be reported on his or her tax return (unless he or she holds the shares in an IRA or other tax-deferred account). Investors should consult their brokers for information on how the brokers will handle the conversion process, including whether they will impose a fee to process a conversion.

The conversion process works differently if the investor opts to hold ETF Shares through an account at Vanguard Brokerage Services (VBS/(R)/). If the investor converts his or her conventional shares to ETF Shares through VBS, all conventional shares for which he or she requests conversion will be converted into the equivalent amount of ETF Shares. Because no fractional shares will have to be sold, the transaction will be 100% tax-free.

Here are some important points to keep in mind when converting conventional shares of the ETF Fund into ETF Shares:

- The conversion transaction is nontaxable except, as applicable, to the limited extent described above.

- The conversion process can take anywhere from several days to several weeks, depending on the broker. Vanguard generally will process conversion requests once received, on the same or next business day. Vanguard imposes conversion blackout windows around the dates when the ETF Fund declares dividends. This is necessary to prevent a shareholder from collecting a dividend from both the conventional share class currently held and also from the ETF share class into which the shares will be converted.

- During the conversion process, the investor will remain fully invested in the Fund's conventional shares, and his or her investment will increase or decrease in value in tandem with the net asset value of those shares.

- During the conversion process, the investor will be able to liquidate all or part of his or her investment by instructing Vanguard or his or her broker (depending on whether his or her shares are held in his or her own account or his or her broker's omnibus account) to redeem his or her conventional shares. After the conversion process is complete, the investor will be able to liquidate all or part of his or her investment by instructing his or her broker to sell his or her ETF Shares.

BOOK ENTRY ONLY SYSTEM

Vanguard High Dividend Yield ETF Shares are registered in the name of the DTC or its nominee, Cede & Co., and deposited with, or on behalf of, the DTC. The DTC is a limited-purpose trust company that was created to hold securities of its participants (the DTC Participants) and to facilitate the clearance and settlement of securities transactions among the DTC Participants in such securities through electronic book-entry changes in accounts of the DTC Participants, thereby eliminating the need for physical movement of securities certificates. DTC Participants include securities brokers and dealers, banks, trust companies, clearing corporations and certain other organizations. DTC is a subsidiary of the Depository Trust and Clearing Corporation (DTCC) which is owned by certain participants of DTCC's subidiaries, including DTC. Access to the DTC system is also available to others such as banks, brokers, dealers, and trust companies that clear through or maintain a custodial relationship with a DTC Participant, either directly or indirectly (the Indirect Participants).

Beneficial ownership of ETF Shares is limited to the DTC Participants, Indirect Participants, and persons holding interests through DTC Participants and Indirect Participants. Ownership of beneficial interests in ETF Shares (owners of such beneficial interests are referred to herein as Beneficial Owners) is shown on, and the transfer of ownership is effected only through, records maintained by the DTC (with respect to DTC Participants) and on the records of DTC Participants (with respect to Indirect Participants and Beneficial Owners that are not DTC Participants). Beneficial Owners will receive from or through the DTC Participant a written confirmation relating to their purchase of ETF Shares.

The ETF Fund recognizes the DTC or its nominee as the record owner of all ETF Shares for all purposes. Beneficial Owners of ETF Shares are not entitled to have ETF Shares registered in their names, and will not receive or be entitled to physical delivery of share certificates. Each Beneficial Owner must rely on the procedures of the DTC and any DTC Participant and/or Indirect Participant through which such Beneficial Owner holds its interests, to exercise any rights of a holder of ETF Shares.

Conveyance of all notices, statements, and other communications to Beneficial Owners is effected as follows. The DTC will make available to the Trust upon request and for a fee a listing of the ETF Shares of each ETF Fund held by each

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DTC Participant. The Trust shall obtain from each such DTC Participant the number of Beneficial Owners holding ETF Shares, directly or indirectly, through such DTC Participant. The Trust shall provide each such DTC Participant with copies of such notice, statement, or other communication, in such form, number and at such place as such DTC Participant may reasonably request, in order that such notice, statement or communication may be transmitted by such DTC Participant, directly or indirectly, to such Beneficial Owners. In addition, the Trust shall pay to each such DTC Participant a fair and reasonable amount as reimbursement for the expenses attendant to such transmittal, all subject to applicable statutory and regulatory requirements.

Share distributions shall be made to the DTC or its nominee as the registered holder of all ETF Shares.The DTC or its nominee, upon receipt of any such distributions, shall credit immediately DTC Participants' accounts with payments in amounts proportionate to their respective beneficial interests in ETF Shares of the ETF Fund as shown on the records of the DTC or its nominee. Payments by DTC Participants to Indirect Participants and Beneficial Owners of ETF Shares held through such DTC Participants will be governed by standing instructions and customary practices, as is now the case with securities held for the accounts of customers in bearer form or registered in a "street name," and will be the responsibility of such DTC Participants.

The Trust has no responsibility or liability for any aspects of the records relating to or notices to Beneficial Owners, or payments made on account of beneficial ownership interests in such ETF Shares, or for maintaining, supervising, or reviewing any records relating to such beneficial ownership interests, or for any other aspect of the relationship between the DTC and the DTC Participants or the relationship between such DTC Participants and the Indirect Participants and Beneficial Owners owning through such DTC Participants.

The DTC may determine to discontinue providing its service with respect to ETF Shares at any time by giving reasonable notice to the Trust and discharging its responsibilities with respect thereto under applicable law. Under such circumstances, the Trust shall take action either to find a replacement for the DTC to perform its functions at a comparable cost or, if such replacement is unavailable, to issue and deliver printed certificates representing ownership of ETF Shares, unless the Trust makes other arrangements with respect thereto satisfactory to the exchange.

PURCHASE AND ISSUANCE OF ETF SHARES IN CREATION UNITS

The ETF Fund issues and sells ETF Shares only in Creation Units on a continuous basis through the Distributor, without a sales load, at their net asset value next determined after receipt, on any Business Day, of an order in proper form. The ETF Fund will not issue fractional Creation Units.

A Business Day is any day on which the NYSE is open for business. As of the date of the Prospectus, the NYSE observes the following holidays: New Year's Day, Martin Luther King, Jr. Day, Presidents' Day (Washington's Birthday), Good Friday, Memorial Day (observed), Independence Day, Labor Day, Thanksgiving Day, and Christmas Day.

FUND DEPOSIT

The consideration for purchase of a Creation Unit from the ETF Fund generally consists of the in kind deposit of a designated portfolio of equity securities (the Deposit Securities) and an amount of cash (the Cash Component) consisting of a Balancing Amount (described below) and a Transaction Fee (also described below). Together, the Deposit Securities and the Cash Component constitute the Fund Deposit.

The Balancing Amount is an amount equal to the difference between the net asset value (NAV) of a Creation Unit and the market value of the Deposit Securities (the Deposit Amount). It ensures that the NAV of the Fund Deposit (not including the Transaction Fee) is identical to the NAV of the Creation Unit it is used to purchase. If the Balancing Amount is a positive number (i.e., the NAV per Creation Unit exceeds the market value of the Deposit Securities), then that amount will be paid by the purchaser to the ETF Fund in cash. If the Balancing Amount is a negative number (i.e., the NAV per Creation Unit is less than the market value of the Deposit Securities), then that amount will be paid by the ETF Fund to the purchaser in cash (except as offset by the Transaction Fee, described below).

Vanguard, through the National Securities Clearing Corporation (NSCC) (discussed below), makes available after the close of each Business Day, a list of the names and the required number of shares of each Deposit Security to be included in the next Business Day's Fund Deposit for the ETF Fund (subject to possible amendment or correction). The Fund Deposit is applicable, subject to any adjustments as described below, in order to effect purchases of Creation Units of the ETF Fund until such time as the next-announced Fund Deposit composition is made available. The ETF Fund reserves the right to accept a nonconforming Fund Deposit.

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The identity and number of shares of the Deposit Securities required for a Fund Deposit may change from one day to another to reflect rebalancing adjustments and corporate actions by the ETF Fund, or in response to adjustments to the weighting or composition of the component stocks of the relevant target index. In addition, the Trust reserves the right to permit or require the substitution of an amount of cash--i.e., a "cash in lieu" amount--to be added to the Cash Component to replace any Deposit Security that may not be available in sufficient quantity for delivery, may not be eligible for transfer through the Clearing Process (discussed below), or may not be eligible for trading by an Authorized Participant (as defined below) or the investor for which an Authorized Participant is acting. Brokerage commissions incurred in connection with acquisition of Deposit Securities not eligible for transfer through the systems of the DTC and hence not eligible for transfer through the Clearing Process will be an expense of the Fund. However, Vanguard may adjust the Transaction Fee (described below) to protect existing shareholders from this expense.

All questions as to the number of shares of each security in the Deposit Securities and the validity, form, eligibility, and acceptance for deposit of any securities to be delivered shall be determined by the ETF Fund, and the ETF Fund's determination shall be final and binding.

PROCEDURES FOR PURCHASING CREATION UNITS

To be eligible to place orders with the Distributor and to purchase Creation Units from the ETF Fund, you must be an Authorized Participant, i.e., a DTC Participant that has executed an agreement with the Trust's Distributor governing the purchase and redemption of Creation Units (the Participant Agreement). Investors who are not Authorized Participants must make appropriate arrangements with an Authorized Participant in order to purchase or redeem a Creation Unit. If your broker is not a DTC Participant or has not executed a Participant Agreement, it will have to place your order through an Authorized Participant, which may result in additional charges to you. For a current list of Authorized Participants, contact the Distributor.

An Authorized Participant may place an order to purchase (or redeem) Creation Units of the ETF Fund either (1) through the Continuous Net Settlement (CNS) clearing processes of NSCC as such processes have been enhanced to effect purchases (and redemptions) of Creation Units, such processes being referred to herein as the Clearing Process, or (2) outside the Clearing Process. To purchase or redeem through the Clearing Process, an Authorized Participant must be a member of NSCC that is eligible to use the CNS system. Purchases (and redemptions) of Creation Units cleared through the Clearing Process will be subject to a lower Transaction Fee than those cleared outside the Clearing Process.

To initiate a purchase order for a Creation Unit, whether through the Clearing Process or outside the Clearing Process, an Authorized Participant must give notice to the Distributor. The order must be in proper form and must be received by the Distributor prior to the closing time of the regular trading session on the NYSE (Closing Time) (ordinarily 4 p.m., Eastern time) to receive that day's NAV. The date on which an order to purchase (or redeem) Creation Units is placed is referred to as the Transmittal Date. Orders must be transmitted by an Authorized Participant by a transmission method acceptable to the Distributor pursuant to procedures set forth in the Participation Agreement.

Purchase orders effected outside the Clearing Process are likely to require transmittal by the Authorized Participant earlier on the Transmittal Date than orders effected using the Clearing Process. Those persons placing orders outside the Clearing Process should ascertain the deadlines applicable to DTC and the Federal Reserve Bank wire system by contacting the operations department of the broker or depository institution effectuating such transfer of Deposit Securities and Cash Component.

Neither the Trust, the ETF Fund, the Distributor, nor any affiliated party will be liable to an investor who is unable to submit a purchase (or redemption) order by Closing Time, even if the problem is the responsibility of one of those parties (e.g., the Distributor's phone systems or fax machines were not operating properly.)

If you are not an Authorized Participant, you must place your purchase order with an Authorized Participant in a form acceptable to such Authorized Participant. In addition, the Authorized Participant may request that you make certain representations or enter into agreements with respect to the order,
e.g., to provide for payments of cash when required. You should afford sufficient time to permit proper submission of the order by the Authorized Participant to the Distributor prior to Closing Time on the Transmittal Date.

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PLACEMENT OF PURCHASE ORDERS USING CLEARING PROCESS

For purchase orders placed through the Clearing Process, the Authorized Participant Agreement authorizes the Distributor to transmit through the Transfer Agent or Index Receipt Agent to the NSCC, on behalf of an Authorized Participant, such trade instructions as are necessary to effect the Authorized Participant's purchase order. Pursuant to such trade instructions to the NSCC, the Authorized Participant agrees to deliver the requisite Deposit Securities and the Cash Component to the ETF Fund, together with such additional information as may be required by the Distributor.

An order to purchase Creation Units through the Clearing Process is deemed received on the Transmittal Date if (1) such order is received by the Distributor not later than the Closing Time on such Transmittal Date, and (2) all other procedures set forth in the Participant Agreement are properly followed. Such order will be effected based on the NAV of the ETF Fund next determined on that day. An order to purchase Creation Units through the Clearing Process made in proper form but received after Closing Time on the Transmittal Date will be deemed received on the next Business Day immediately following the Transmittal Date and will be effected at the NAV next determined on that day. The Deposit Securities and the Cash Component will be transferred by the third NSCC Business Day following the date on which the purchase request is deemed received.

PLACEMENT OF PURCHASE ORDERS OUTSIDE CLEARING PROCESS

An Authorized Participant that wishes to place an order to purchase Creation Units outside the Clearing Process must state that it is not using the Clearing Process and that the purchase instead will be effected through a transfer of securities and cash directly through DTC. An order to purchase Creation Units outside the Clearing Process is deemed received by the Distributor on the Transmittal Date if (1) such order is received by the Distributor not later than the Closing Time on such Transmittal Date, and (2) all other procedures set forth in the Participant Agreement are properly followed. If the Fund's custodian does not receive the Deposit Securities and Cash Component by the settlement date (T+3 unless otherwise agreed), the Fund shall be entitled to cancel the purchase order and/or charge the purchaser for any costs (including investment losses, attorney's fees, and interest) sustained by the Fund as a result of the late delivery or failure to deliver.

The ETF Fund may issue Creation Units to a purchaser before receiving some or all of the Deposit Securities if the purchaser deposits, in addition to the available Deposit Securities and the Cash Component, an additional cash deposit in an amount determined by the Fund.

REJECTION OF PURCHASE ORDERS

The ETF Fund reserves the absolute right to reject a purchase order transmitted to it by the Distributor. By way of example, and not limitation, the ETF Fund will reject a purchase order if:

- the order is not in proper form;

n the investor(s), upon obtaining the ETF Shares ordered, would own 80% or more of the total combined voting power of all classes of stock issued by the ETF Fund;

- the Deposit Securities delivered are not the same (in name and amount) as disseminated through the facilities of the NSCC for that date by the Custodian, as described above;

- acceptance of the Deposit Securities would have certain adverse tax consequences to the ETF Fund;

- acceptance of the Fund Deposit would, in the opinion of counsel, be unlawful;

- acceptance of the Fund Deposit would otherwise, in the discretion of the ETF Fund or Vanguard, have an adverse effect on the Fund or any of its shareholders; or

- circumstances outside the control of the ETF Fund, the Transfer Agent, the custodian, the Distributor, and Vanguard make it for all practical purposes impossible to process the order. Examples of such circumstances include acts of God; public service or utility problems such as fires, floods, extreme weather conditions, and power outages resulting in telephone, telecopy, and computer failures; market conditions or activities causing trading halts; systems failures involving computer or other information systems affecting the Trust, Vanguard, the Distributor, DTC, NSCC, or any other participant in the purchase process; and similar extraordinary events.

The Distributor shall notify the prospective purchaser of a Creation Unit, and/or the Authorized Participant acting on the purchaser's behalf, of its rejection of the purchaser's order. The ETF Fund, the Transfer Agent, the Custodian, and the Distributor are under no duty, however, to give notification of any defects or irregularities in the delivery of a Fund Deposit, nor shall any of them incur any liability for the failure to give any such notification.

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TRANSACTION FEE ON PURCHASES OF CREATION UNITS

The ETF Fund imposes a transaction fee (payable to the Fund) to compensate the Fund for the transfer and other transaction costs associated with the issuance of Creation Units. For purchases effected through the Clearing Process, the transaction fee is $250, regardless of how many Creation Units are purchased. An additional charge may be imposed for purchases effected outside the Clearing Process. The maximum transaction fee for purchases of the High Dividend Yield ETF Shares is $1,818.

When the ETF Fund permits a purchaser to substitute cash in lieu of depositing one or more Deposit Securities, the purchaser will be assessed an additional variable charge on the "cash in lieu" portion of its investment. The amount of this variable charge shall be determined by the ETF Fund in its sole discretion, but shall not be more than is reasonably needed to compensate the Fund for the brokerage costs associated with purchasing the relevant Deposit Securities and, if applicable, the estimated market impact costs of purchasing such securities.

REDEMPTION OF ETF SHARES IN CREATION UNITS

ETF Shares may be redeemed only in Creation Units; the ETF Fund will not redeem ETF Shares tendered in less than Creation Unit-size aggregations. Investors should expect to incur brokerage and other costs in connection with assembling a sufficient number of ETF Shares to constitute a redeemable Creation Unit. There can be no assurance, however, that there will be sufficient liquidity in the public trading market at any time to permit assembly of a Creation Unit. Redemption requests in good order will receive the NAV next determined after the request is made.

An investor tendering a Creation Unit generally will receive redemption proceeds consisting of (1) a basket of Redemption Securities, plus (2) a Cash Redemption Amount equal to the difference between (x) the NAV of the Creation Unit being redeemed, as next determined after receipt of a request in proper form, and (y) the value of the Redemption Securities, less (3) a Redemption Transaction Fee (described below). If the Redemption Securities have a value greater then the NAV of a Creation Unit, the redeeming investor would pay the Cash Redemption Amount to the ETF Fund, rather than receiving such amount from the Fund.

Vanguard, through the NSCC, makes available immediately prior to the opening of business on the Exchange (currently 9:30 a.m., Eastern time) on each Business Day, the identity of the Redemption Securities that will be used (subject to possible amendment or correction) to satisfy redemption requests received in proper form (as defined below) on that day. The basket of Redemption Securities provided to an investor redeeming a Creation Unit may not be identical to the basket of Deposit Securities required of a investor purchasing a Creation Unit. If the ETF Fund and a redeeming investor mutually agree, the Fund may provide the investor with a basket of Redemption Securities that differs from the composition of the redemption basket published through NSCC.

The ETF Fund reserves the right to deliver cash in lieu of any Redemption Security for the same reason it might accept cash in lieu of a Deposit Security, as discussed above, or if the Fund could no lawfully deliver the security or could not do so without first registering such security under federal or state law.

TRANSACTION FEES ON REDEMPTIONS OF CREATION UNITS

The ETF Fund imposes a transaction fee (payable to the Fund) to compensate the Fund for the transfer and other transaction costs associated with the redemption of Creation Units. For redemptions effected through the Clearing Process, the transaction fee is $250, regardless of how many Creation Units are redeemed. An additional charge may be imposed for redemptions effected outside the Clearing Process. The maximum transaction fees for redemptions of the High Dividend Yield ETF Shares is $1,818.

When the ETF Fund permits a redeeming investor to receive cash in lieu of one or more Redemption Securities, the investor will be assessed an additional variable charge on the "cash in lieu" portion of its redemption. The amount of this variable charge shall be determined by the Fund in its sole discretion, but shall not be more than is reasonably needed to compensate the ETF Fund for the brokerage costs associated with selling portfolio securities to raise the necessary cash and, if applicable, the estimated market impact costs of selling such securities.

PLACEMENT OF REDEMPTION ORDERS USING CLEARING PROCESS

An order to redeem Creation Units through the Clearing Process is deemed received on the Transmittal Date if (1) such order is received by the Distributor no later than the Closing Time on such Transmittal Date, and (2) all other procedures

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set forth in the Participant Agreement are properly followed. Such order will be effected based on the NAV of the ETF Fund next determined on that day. An order to redeem Creation Units through the Clearing Process made in proper form but received after Closing Time on the Transmittal Date will be deemed received on the next Business Day immediately following the Transmittal Date and will be effected at the NAV next determined on that day. The Redemption Securities and the Cash Redemption Amount will be transferred by the third NSCC Business Day following the date on which the redemption request is deemed received.

PLACEMENT OF REDEMPTION ORDERS OUTSIDE CLEARING PROCESS

An Authorized Participant that wishes to place an order to redeem a Creation Unit outside the Clearing Process must state that it is not using the Clearing Process and that redemption instead will be effected through a transfer of ETF Shares directly through the DTC. An order to redeem a Creation Unit of the ETF Fund outside the Clearing Process is deemed received on the Transmittal Date if
(1) such order is received by the Fund's Transfer Agent prior to the Closing Time on such Transmittal Date; and (2) all other procedures set forth in the Participant Agreement are properly followed. If the ETF Fund's custodian does not receive the required number of ETF Shares from the redeeming investor by the settlement date (T+3 unless otherwise agreed), the Fund shall be entitled to charge the redeeming investor for any costs (including investment losses, attorney's fees, and interest) sustained by the Fund as a result of the late delivery or failure to deliver.

After the Transfer Agent has deemed an order for redemption outside the Clearing Process received, the Transfer Agent will initiate procedures to transfer the Redemption Securities and the Cash Redemption Amount to the Authorized Participant on behalf of the redeeming Beneficial Owner by the third Business Day following the Transmittal Date on which such redemption order is deemed received by the Transfer Agent.

The calculation of the value of the Redemption Securities and the Cash Redemption Amount to be delivered upon redemption will be made by the custodian on the Business Day on which a redemption order is deemed received by the Transfer Agent. Therefore, if a redemption order in proper form is submitted to the Transfer Agent by an Authorized Participant prior to the Closing Time on the Transmittal Date, then the value of the Redemption Securities and the Cash Redemption Amount will be determined by the Custodian on such Transmittal Date.

The ETF Fund reserves the right, in its sole discretion, to require or permit a redeeming investor to receive its redemption proceeds in cash. In such cases, the investor would receive a cash payment equal to the NAV of the ETF Shares based on the NAV of those shares next determined after the redemption request is received in proper form (minus a transaction fee, including a charge for cash redemptions, described above).

If a redeeming investor (or an Authorized Participant through which it is acting) is subject to a legal restriction with respect to a particular stock included in the basket of Redemption Securities, such investor may be paid an equivalent amount of cash in lieu of the stock. In addition, the ETF Fund reserves the right to redeem Creation Units partially for cash to the extent that the Fund could not lawfully deliver one or more Redemption Securities or could not do so without first registering such securities under federal or state law.

The right of redemption may be suspended or the date of payment postponed with respect to the ETF Fund (1) for any period during which the NYSE or listing exchange is closed (other than customary weekend and holiday closings); (2) for any period during which trading on the NYSE or listing exchange is suspended or restricted; (3) for any period during which an emergency exists as a result of which disposal of the Fund's ETF Shares or determination of the ETF Shares, NAV is not reasonably practical; or (4) in such other circumstances as the SEC permits.

FINANCIAL STATEMENTS

Each Fund's Financial Statements for the fiscal year ended October 31, 2007, appearing in the Funds' 2007 Annual Reports to Shareholders, and the reports thereon of PricewaterhouseCoopers LLP, an independent registered public accounting firm, also appearing therein, are incorporated by reference in this Statement of Additional Information. For a more complete discussion of each Fund's performance, please see the Funds' Annual and Semiannual Reports to Shareholders, which may be obtained without charge.

SAI934 022008


PART C

VANGUARD WHITEHALL FUNDS
OTHER INFORMATION

ITEM 23. EXHIBITS

EXHIBITS DESCRIPTION

(a) Articles of Incorporation, Amended and Restated Agreement and Declaration of Trust, is filed herewith.
(b) By-Laws, are filed herewith.

(c) Instruments Defining Rights of Security Holders, reference is made to Articles III and V of the Registrant's Amended and Restated Agreement and Declaration of Trust, refer to Exhibit (a) above.

(d) Investment Advisory Contracts, for William Blair & Company, L.L.C., filed on June 8, 2006, Post-Effective Amendment No. 31; for Schroder Investment Management North America Inc., with sub-advisory agreement for Schroder Investment Management North America Limited; for Donald Smith & Co., Inc.; for Chartwell Investment Partners; and for Barrow, Hanley, Mewhinney & Strauss, Inc.filed on February 23, 2007, Post-Effective Amendment No. 35, are hereby incorporated by reference. The Vanguard Group, Inc. provides investment advisory services to Vanguard High Dividend Yield Index Fund at cost pursuant to the Amended and Restated Funds' Service Agreement, refer to Exhibit (h) below.

(e) Underwriting Contracts, not applicable.
(f) Bonus or Profit Sharing Contracts, reference is made to the section entitled "Management of the Funds" in the Registrant's Statement of Additional Information.

(g) Custodian Agreements, for Citibank, N.A., filed on December 19, 2005, Post-Effective Amendment No. 27; for The Bank of New York, filed on February 16, 2005, Post-Effective Amendment No. 23; and for JPMorgan Chase Bank, is filed herewith.
(h) Other Material Contracts, Amended and Restated Funds' Service Agreement, is filed herewith.

(i) Legal Opinion, not applicable.

(j) Other Opinions, Consent of Independent Registered Public Accounting Firm, is filed herewith.

(k) Omitted Financial Statements, not applicable.
(l) Initial Capital Agreements, not applicable.
(m) Rule 12b-1 Plan, not applicable.

(n) Rule 18f-3 Plan, is filed herewith.

(o) Reserved.

(p) Codes of Ethics, for The Vanguard Group, Inc., filed on November 9, 2006, Post-Effective Amendment No. 34; for Schroder Investment Management North America Inc., and Schroder Investment Management North America Limited, filed on February 4, 2004, Post-Effective Amendment No. 21; for Donald Smith & Co., Inc., filed on July 25, 2005, Post-Effective Amendment No. 25; for Chartwell Investment Partners, filed on February 17, 2006, Post-Effective Amendment No. 29; for William Blair & Company, L.L.C., filed on June 8, 2006, Post-Effective Amendment No. 31; are hereby incorporated by reference. For Barrow, Hanley, Mewhinney & Strauss, Inc. is filed herewith.


ITEM 24. PERSONS CONTROLLED BY OR UNDER COMMON CONTROL WITH REGISTRANT

Registrant is not controlled by or under common control with any person.

ITEM 25. INDEMNIFICATION

The Registrant's organizational documents contain provisions indemnifying Trustees and officers against liability incurred in their official capacity. Article VII, Section 2 of the Amended and Restated Agreement Declaration of Trust provides that the Registrant may indemnify and hold harmless each and every Trustee and officer from and against any and all claims, demands, costs, losses, expenses, and damages whatsoever arising out of or related to the performance of his or her duties as a Trustee or officer. However, this provision does not cover any liability to which a Trustee or officer would otherwise be subject by reason of willful misfeasance, bad faith, gross negligence, or reckless disregard of the duties involved in the conduct of his or her office. Article VI of the By-Laws generally provides that the Registrant shall indemnify its Trustees and officers from any liability arising out of their past or present service in that capacity. Among other things, this provision excludes any liability arising by reason of willful misfeasance, bad faith, gross negligence, or the reckless disregard of the duties involved in the conduct of the Trustee's or officer's office with the Registrant.

ITEM 26. BUSINESS AND OTHER CONNECTIONS OF INVESTMENT ADVISOR

Barrow, Hanley, Mewhinney & Strauss, Inc. (Barrow, Hanley) is an investment advisor registered under the Investment Advisers Act of 1940, as amended (Advisers Act). The list required by this Item 26 of officers and directors of Barrow, Hanley, together with any information as to any business, profession, vocation, or employment of a substantial nature engaged in by such officers and directors during the past two years, is incorporated herein by reference to Schedules B and D of Form ADV filed by Barrow, Hanley pursuant to the Advisers Act (SEC File No. 801-31237).

Schroder Investment Management North America Inc. (Schroder Inc.), is an investment advisor registered under the Advisers Act. The list required by this Item 26 of officers and directors of Schroder Inc., together with any information as to any business, profession, vocation, or employment of a substantial nature engaged in by such officers and directors during the past two years, is incorporated herein by reference to Schedules B and D of Form ADV filed by Schroder Inc. pursuant to the Advisers Act (SEC File No. 801-15834).

Schroder Investment Management North America Limited (Schroder Limited) is an investment advisor registered under the Advisers Act. The list required by this Item 26 of officers and directors of Schroder Limited, together with any information as to any business, profession, vocation, or employment of a substantial nature engaged in by such officers and directors during the past two years, is incorporated herein by reference to Schedules B and D of Form ADV filed by Schroder Limited pursuant to the Advisers Act (SEC File No. 801-37163).

Donald Smith & Co., Inc. (Donald Smith & Co.) is an investment advisor registered under the Advisers Act. The list required by this Item 26 of officers and directors of Donald Smith & Co. together with any information as to any business, profession, vocation, or employment of a substantial nature engaged in by such officers and directors during the past two years, is incorporated herein by reference from Schedules B and D of Form ADV filed by Donald Smith & Co. pursuant to the Advisers Act (SEC File No. 801-10798).

Chartwell Investment Partners L.P. (Chartwell) is an investment adviser registered under the Advisers Act. The list required by this Item 26 of officers and partners of Chartwell, together with any information as to any business, profession, vocation, or employment of a substantial nature engaged in by such officers and partners during the past two years, is incorporated herein by reference from Schedules B and D of Form ADV filed by Chartwell pursuant to the Advisers Act (SEC File No. 801-54124).

William Blair & Company, L.L.C. (William Blair & Company) is an investment adviser registered under the Advisers Act. The list required by this Item 26 of officers and directors of William Blair & Company, together with any information as to any business, profession, vocation, or employment of a substantial nature engaged in by such officers and directors during the past two years, is incorporated herein by


reference to Schedules B and D of Form ADV filed by William Blair & Company pursuant to the Advisers Act (SEC File No. 801-688).

The Vanguard Group, Inc. (Vanguard) is an investment adviser registered under the Advisers Act. The list required by this Item 26 of officers and directors of Vanguard, together with any information as to any business, profession, vocation, or employment of a substantial nature engaged in by such officers and directors during the past two years, is incorporated herein by reference from Schedules B and D of Form ADV filed by Vanguard pursuant to the Advisers Act (SEC File No. 801-11953).

ITEM 27. PRINCIPAL UNDERWRITERS

(a)Vanguard Marketing Corporation, a wholly-owned subsidiary of The Vanguard Group, Inc., is the principal underwriter of each fund within the Vanguard group of investment companies, a family of 37 investment companies with more than 150

funds.

(b)The principal business address of each named director and officer of Vanguard Marketing Corporation is 100 Vanguard Boulevard, Malvern, PA 19355.

Name Positions and Office with Underwriter Positions and Office with Funds
---- ------------------------------------- -------------------------------
R. Gregory Barton Director and Senior Vice President None

John J. Brennan Director Trustee, Chairman, President, and Chief
 Executive Officer

Mortimer J. Buckley Director and Senior Vice President None

F. William McNabb III Director and Senior Vice President None

Michael S. Miller Director and Managing Director None

Ralph K Packard Director None

George U. Sauter Director and Senior Vice President None

Heidi Stam Director and Senior Vice President Secretary

Richard D. Carpenter Treasurer None

David L. Cermak Principal None

Joseph Colaizzo Financial and Operations Principal and Assistant None
 Treasurer

Patti Colby Principal None

Michael L. Kimmel Secretary None

Sean P. Hagerty Principal None

Jack T. Wagner Assistant Treasurer None

Jennifer M. Halliday Assistant Treasurer None

Brian P. McCarthy Senior Registered Options Principal None

Deborah McCracken Assistant Secretary None

Miranda O'Keefe Compliance Registered Options Principal None

Joseph F. Miele Registered Municipal Securities Principal None

Jane K. Myer Principal None

Pauline C. Scalvino Chief Compliance Officer Chief Compliance officer


ITEM 28. LOCATION OF ACCOUNTS AND RECORDS

All accounts, books, and other documents required to be maintained by Section 31(a) of the 1940 Act and the Rules thereunder will be maintained at the offices of the Registrant, 100 Vanguard Boulevard, Malvern, PA 19355; the Registrant's Transfer Agent, The Vanguard Group, Inc., 100 Vanguard Boulevard, Malvern, PA 19355; and the Registrant's Custodians, JPMorgan Chase Bank, 270 Park Avenue, New York, NY 10017-2070, The Bank of New York, One Wall Street, New York, NY 10286, and Citibank, N.A., 111 Wall Street, New York, NY 10005.

ITEM 29. MANAGEMENT SERVICES

Other than as set forth in the section entitled "Management of the Funds" in Part B of this Registration Statement, the Registrant is not a party to any management-related service contract.

ITEM 30. UNDERTAKINGS

Not Applicable


SIGNATURES

Pursuant to the requirements of the Securities Act of 1933 and the Investment Company Act of 1940, the Registrant hereby certifies that it meets all requirements for effectiveness of this Registration Statement pursuant to Rule 485(b) under the Securities Act of 1933 and it has duly caused this Post-Effective Amendment to this Registration Statement to be signed on its behalf by the undersigned, thereunto duly authorized, in the Town of Valley Forge and the Commonwealth of Pennsylvania, on the 21th day of February, 2008.

VANGUARD WHITEHALL FUNDS

BY:_____________(signature)________________

(HEIDI STAM)

JOHN J. BRENNAN*
CHAIRMAN AND CHIEF EXECUTIVE OFFICER

Pursuant to the requirements of the Securities Act of 1933, this Post-Effective Amendment to the Registration Statement has been signed below by the following persons in the capacities and on the date indicated:

 SIGNATURE TITLE DATE
 --------------------------------------------------------------------------------

By:----------------------------President, Chairman, Chief February 21, 2008
 /S/ JOHN J. BRENNAN Executive Officer, and Trustee
 (Heidi Stam)
 John J. Brennan*
By:----------------------------Trustee February 21, 2008
 /S/ CHARLES D. ELLIS
 (Heidi Stam)
 Charles D. Ellis*
By:----------------------------Trustee February 21, 2008
 /S/ EMERSON U. FULLWOOD
 (Heidi Stam)
 Emerson U. Fullwood*
By:----------------------------Trustee February 21, 2008
 /S/ RAJIV L. GUPTA
 (Heidi Stam)
 Rajiv L. Gupta*
By:----------------------------Trustee February 21, 2008
 /S/ AMY GUTMANN
 (Heidi Stam)
 Amy Gutmann*
By:----------------------------Trustee February 21, 2008
 /S/ JOANN HEFFERNAN HEISEN
 (Heidi Stam)
 JoAnn Heffernan Heisen*
By:----------------------------Trustee February 21, 2008
 /S/ ANDRE F. PEROLD
 (Heidi Stam)
 Andre F. Perold*
By:----------------------------Trustee February 21, 2008
 /S/ ALFRED M. RANKIN, JR.
 (Heidi Stam)
 Alfred M. Rankin, Jr.*
By:----------------------------Trustee February 21, 2008
 /S/ J. LAWRENCE WILSON
 (Heidi Stam)
 J. Lawrence Wilson*
By:----------------------------Treasurer and Principal February 21, 2008
 /S/ THOMAS J. HIGGINS Financial Office and Principal
 (Heidi Stam) Accounting Officer
 Thomas J. Higgins*

**By Power of Attorney. Filed on January 18, 2008 see File Number 2-29601.
Incorporated by reference.


INDEX TO EXHIBITS

Articles of Incorporation . . . . . . . . . . . . . . . . . . . . . . . Ex-99.A

By-Laws . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . Ex-99.B

Custodian Agreement . . . . . . . . . . . . . . . . . . . . . . . . . . Ex-99.G

Other Material Contracts . . . . . . . . . . . . . . . . . . . . . . . Ex-99.H

Other Opinions . . . . . . . . . . . . . . . . . . . . . . . . . . . . Ex-99.J

Rule 18f-3 Plan . . . . . . . . . . . . . . . . . . . . . . . . . . . . Ex-99.N

Code of Ethics . . . . . . . . . . . . . . . . . . . . . . . . . . . . .Ex-99.P

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