UNITED STATES
SECURITIES AND EXCHANGE COMMISSION
Washington, D.C. 20549
 
 
Form N-CSR
 
 
CERTIFIED SHAREHOLDER REPORT OF REGISTERED
MANAGEMENT INVESTMENT COMPANIES
Investment Company Act File Number: 811‑09013
 
 
Eaton Vance Senior Income Trust
(Exact Name of Registrant as Specified in Charter)
 
 
Two International Place, Boston, Massachusetts 02110
(Address of Principal Executive Offices)
 
 
Deidre E. Walsh
Two International Place, Boston, Massachusetts 02110
(Name and Address of Agent for Services)
 
 
(617) 482‑8260
(Registrant’s Telephone Number)
June 30
Date of Fiscal Year End
June 30, 2023
Date of Reporting Period
 
 
 
Item 1. Reports to Stockholders
 
Eaton Vance
Senior Income Trust (EVF)
Annual Report
June 30, 2023
Commodity Futures Trading Commission Registration. The Commodity Futures Trading Commission (“CFTC”) has adopted regulations that subject registered investment companies and advisers to regulation by the CFTC if a fund invests more than a prescribed level of its assets in certain CFTC-regulated instruments (including futures, certain options and swap agreements) or markets itself as providing investment exposure to such instruments. The investment adviser has claimed an exclusion from the definition of “commodity pool operator” under the Commodity Exchange Act with respect to its management of the Fund. Accordingly, neither the Fund nor the adviser with respect to the operation of the Fund is subject to CFTC regulation. Because of its management of other strategies, the Fund's adviser is registered with the CFTC as a commodity pool operator. The adviser is also registered as a commodity trading advisor.
Fund shares are not insured by the FDIC and are not deposits or other obligations of, or guaranteed by, any depository institution. Shares are subject to investment risks, including possible loss of principal invested.
Eaton Vance
Senior Income Trust
June 30, 2023
Management’s Discussion of Fund Performance†
Economic and Market Conditions
Amid global concerns about inflation, rising interest rates, war in Ukraine, and the possibility of recession, senior loans displayed their value as a portfolio diversifier by outperforming most U.S. fixed-income asset classes during the 12-month period ended June 30, 2023.
With senior loans being one of the few asset classes to benefit from rising interest rates, the Morningstar® LSTA® US Leveraged Loan IndexSM (the Index), a broad measure of the asset class, returned 10.71% during the period. Senior loans generally outperformed investment-grade corporate bonds, corporate high yield bonds, municipal bonds, and U.S. government bonds.
As the period began in July 2022, the expectation of multiple U.S. Federal Reserve (the Fed) interest rate increases in 2022 was generally viewed as a positive for floating-rate loans, and the asset class rallied in July and August on the hope that inflation and recession fears were subsiding.
Loan prices eased in September 2022 but rallied back in the closing months of the year. The rally continued into 2023, with the Index returning 2.73% in January 2023 -- its best monthly performance since May 2020 -- and delivering positive performance in February 2023 as well.
In mid-March, however, the unexpected collapse of Silicon Valley Bank and Signature Bank and fear of contagion in the banking sector put a damper on asset performance across capital markets, and the Index return was virtually flat in March 2023. Senior loans rallied again in April, gave back some of those gains in May amid ongoing recession concerns, and rallied back again as the period came to a close in June 2023. For the first half of 2023 (and the last half of the period), the Index delivered its best start to a calendar year since 2009. In the rising-rate environment, coupon interest accounted for nearly three-quarters of the Index’s strong first-half performance.
Asset class technical factors were generally supportive throughout the period, contributing to senior loans’ overall performance. For example, new-issue supply of loans was limited over the period, and this was supportive of secondary market prices. While significant outflows from retail loan funds weighed on overall investor demand, new capital formation in structured products provided a strong offset and reflected continued institutional interest in the asset class.
Amid ongoing recession worries, however, issuer fundamentals deteriorated during the period. The trailing 12-month default rate rose from 0.28% at the beginning of the period to 1.71% at period-end -- but nonetheless remained well below the market’s long-term average of 2.70%. Despite the rising default rate, loan prices improved, from $92.16 at the start of the period to $94.24 at period-end.
For the period as a whole, BBB-, BB-, B-, CCC- and D-rated (defaulted) loans within the Index returned 9.76%, 11.58%, 11.32%, 4.13%, and -40.96%, respectively.
Fund Performance
For the 12-month period ended June 30, 2023, Eaton Vance Senior Income Trust (the Fund) shares returned 11.71% at net asset value of its common shares (NAV), outperforming the 10.71% return of the Index.
The Fund’s employment of investment leverage contributed to performance versus the Index, which does not employ leverage, during the period. The use of leverage has the effect of achieving additional exposure to the loan market, and thus magnifying exposure to the Fund’s underlying investments in both up and down market environments. During this period of strong performance by the senior loan market, leverage amplified the price appreciation and interest income of loans in the Fund’s underlying portfolio and, therefore, helped Fund performance versus the Index.
On an individual loan basis, the largest contributor to Index-relative returns was the Fund’s avoidance of a struggling emergency air and ground medical transport company that was included in the Index. Underweighting a consumer electronics insurance provider whose loan underperformed the Index helped relative performance as well.
The Fund’s underweight position in BBB-rated loans and its avoidance of several defaulted loans in the Index also contributed to Fund performance versus the Index during the period.
In contrast, the Fund’s out-of-Index allocation to corporate high yield bonds detracted from returns relative to the Index. Rising interest rates led high yield bonds in general to underperform senior loans during the period.
On an individual loan basis, the largest detractor from Index-relative returns was an overweight position in a lighting solutions company that filed for Chapter 11 bankruptcy during the period.
See Endnotes and Additional Disclosures in this report.
Past performance is no guarantee of future results. Returns are historical and are calculated net of management fees and other expenses by determining the percentage change in net asset value (NAV) or market price (as applicable) with all distributions reinvested in accordance with the Fund’s Dividend Reinvestment Plan. Furthermore, returns do not reflect the deduction of taxes that shareholders may have to pay on Fund distributions or upon the sale of Fund shares. Performance at market price will differ from performance at NAV due to variations in the Fund’s market price versus NAV, which may reflect factors such as fluctuations in supply and demand for Fund shares, changes in Fund distributions, shifting market expectations for the Fund’s future returns and distribution rates, and other considerations affecting the trading prices of closed-end funds. Investment return and principal value will fluctuate so that shares, when sold, may be worth more or less than their original cost. Performance for periods less than or equal to one year is cumulative. Performance is for the stated time period only; due to market volatility, current Fund performance may be lower or higher than the quoted return. For performance as of the most recent month-end, please refer to eatonvance.com.
2
Eaton Vance
Senior Income Trust
June 30, 2023
Management’s Discussion of Fund Performance† — continued
During this period of strong senior loan market performance, the Fund’s cash position also dragged on returns versus the Index, which does not have a cash allocation.
See Endnotes and Additional Disclosures in this report.
Past performance is no guarantee of future results. Returns are historical and are calculated net of management fees and other expenses by determining the percentage change in net asset value (NAV) or market price (as applicable) with all distributions reinvested in accordance with the Fund’s Dividend Reinvestment Plan. Furthermore, returns do not reflect the deduction of taxes that shareholders may have to pay on Fund distributions or upon the sale of Fund shares. Performance at market price will differ from performance at NAV due to variations in the Fund’s market price versus NAV, which may reflect factors such as fluctuations in supply and demand for Fund shares, changes in Fund distributions, shifting market expectations for the Fund’s future returns and distribution rates, and other considerations affecting the trading prices of closed-end funds. Investment return and principal value will fluctuate so that shares, when sold, may be worth more or less than their original cost. Performance for periods less than or equal to one year is cumulative. Performance is for the stated time period only; due to market volatility, current Fund performance may be lower or higher than the quoted return. For performance as of the most recent month-end, please refer to eatonvance.com.
3
Eaton Vance
Senior Income Trust
June 30, 2023
Performance
Portfolio Manager(s) Andrew N. Sveen, CFA, Catherine C. McDermott, Daniel P. McElaney, CFA and Sarah A. Choi
% Average Annual Total Returns1,2 Inception Date One Year Five Years Ten Years
Fund at NAV 10/30/1998 11.71% 4.04% 4.94%
Fund at Market Price — 10.80 4.16 3.53
Morningstar® LSTA® US Leveraged Loan IndexSM — 10.71% 4.13% 4.06%
% Premium/Discount to NAV3  
As of period end (10.64)%
Distributions4  
Total Distributions per share for the period $0.560
Distribution Rate at NAV 10.41%
Distribution Rate at Market Price 11.65
% Total Leverage5  
Auction Preferred Shares (APS) 22.83%
Borrowings 12.15
Growth of $10,000
This graph shows the change in value of a hypothetical investment of $10,000 in the Fund for the period indicated. For comparison, the same investment is shown in the indicated index.
See Endnotes and Additional Disclosures in this report.
Past performance is no guarantee of future results. Returns are historical and are calculated net of management fees and other expenses by determining the percentage change in net asset value (NAV) or market price (as applicable) with all distributions reinvested in accordance with the Fund’s Dividend Reinvestment Plan. Furthermore, returns do not reflect the deduction of taxes that shareholders may have to pay on Fund distributions or upon the sale of Fund shares. Performance at market price will differ from performance at NAV due to variations in the Fund’s market price versus NAV, which may reflect factors such as fluctuations in supply and demand for Fund shares, changes in Fund distributions, shifting market expectations for the Fund’s future returns and distribution rates, and other considerations affecting the trading prices of closed-end funds. Investment return and principal value will fluctuate so that shares, when sold, may be worth more or less than their original cost. Performance for periods less than or equal to one year is cumulative. Performance is for the stated time period only; due to market volatility, current Fund performance may be lower or higher than the quoted return. For performance as of the most recent month-end, please refer to eatonvance.com.
4
Eaton Vance
Senior Income Trust
June 30, 2023
Fund Profile
Top 10 Issuers (% of total investments)1  
Asurion, LLC 1.1%
Virgin Media Bristol, LLC 1.1
Banff Merger Sub, Inc. 1.1
Carnival Corporation 1.0
Hyland Software, Inc. 1.0
RealPage, Inc. 1.0
EnergySolutions, LLC 1.0
CentralSquare Technologies, LLC 0.9
Finastra USA, Inc. 0.9
Electro Rent Corporation 0.9
Total 10.0%
Top 10 Sectors (% of total investments)1
Software 15.6%
Health Care Providers & Services 5.6
Chemicals 4.9
Machinery 4.5
Commercial Services & Supplies 3.6
IT Services 3.5
Specialty Retail 3.1
Trading Companies & Distributors 3.0
Hotels, Restaurants & Leisure 2.8
Capital Markets 2.7
Total 49.3%
 
Credit Quality (% of bonds, loans and asset-backed securities)2
Footnotes:
1 Excludes cash and cash equivalents.
2 Credit ratings are categorized using S&P Global Ratings (“S&P”). Ratings, which are subject to change, apply to the creditworthiness of the issuers of the underlying securities and not to the Fund or its shares. Credit ratings measure the quality of a bond based on the issuer’s creditworthiness, with ratings ranging from AAA, being the highest, to D, being the lowest based on S&P’s measures. Ratings of BBB or higher by S&P are considered to be investment-grade quality. Credit ratings are based largely on the ratings agency’s analysis at the time of rating. The rating assigned to any particular security is not necessarily a reflection of the issuer’s current financial condition and does not necessarily reflect its assessment of the volatility of a security’s market value or of the liquidity of an investment in the security. Holdings designated as “Not Rated” (if any) are not rated by S&P.
5
Eaton Vance
Senior Income Trust
June 30, 2023
The Fund's Investment Objectives, Principal Strategies and Principal Risks‡
Investment Objectives. The Fund’s investment objective is to provide a high level of current income, consistent with the preservation of capital.
Principal Strategies. The Fund pursues its objective by investing primarily in senior, secured floating-rate loans (“Senior Loans”). Senior Loans are loans in which the interest rate paid fluctuates based on a reference rate. Senior Loans typically are secured with specific collateral and have a claim on the assets and/or stock that is senior to subordinated debtholders and stockholders of the borrower. Senior Loans are made to corporations, partnerships and other business entities (“Borrowers”) that operate in various industries and geographical regions.
Under normal market conditions, at least 80% of the Fund’s total assets will be invested in interests in Senior Loans of domestic and foreign borrowers that are denominated in U.S. dollars or in euros, British pounds, Swiss francs, Canadian dollars and Australian dollars (each an “Authorized Foreign Currency”) making payments in such Authorized Foreign Currency. The remaining investment assets of the Fund may include, among other types of investments, equity securities that are acquired in connection with an investment in a Senior Loan. For the purpose of the 80% test, total assets is defined as net assets plus any borrowings for investment purposes, including any outstanding preferred shares. The Fund may invest up to 15% of its net assets in Senior Loans denominated in an Authorized Foreign Currency.
The Fund may invest up to 20% of its total assets in (i) loan interests which have (a) a second lien on collateral (“Second Lien”), (b) no security interest in the collateral, or (c) lower than a senior claim on collateral (“Junior Loans”); (ii) other income-producing securities, such as investment and non-investment grade corporate debt securities and U.S. government and U.S. dollar-denominated foreign government or supranational debt securities; and (iii) warrants and equity securities issued by a Borrower or its affiliates as part of a package of investments in the Borrower or its affiliates.
Senior Loans typically are of below investment grade quality (“Non-Investment Grade Bonds”) and have below investment grade credit ratings, which ratings are associated with securities having high risk, speculative characteristics (sometimes referred to as “junk”). The Fund may invest in individual Senior Loans and other securities of any credit quality.
The Fund may invest up to 15% of net assets in Senior Loans denominated in Authorized Foreign Currencies and may invest in other securities of non-United States issuers. The Fund’s investments may have significant exposure to certain sectors of the economy and thus may react differently to political or economic developments than the market as a whole. The Fund will not invest more than 10% of its assets in securities (including interests in Senior Loans) of any single Borrower.
The Fund may purchase or sell derivative instruments (which derive their value from another instrument, security or index) for risk management purposes, such as hedging against fluctuations in Senior Loans and other securities prices or interest rates. Transactions in derivative instruments may include the purchase or sale of futures contracts on securities, indices and other financial instruments, credit-linked notes, tranches of collateralized loan obligations and/or collateralized debt obligations, options on futures contracts, exchange-traded and over-the-counter options on securities or indices, forward foreign currency exchange contracts, and interest rate, total return and credit default swaps.
The Fund employs leverage to seek opportunities for additional income. Leverage may amplify the effect on the Fund’s net asset value (“NAV”) of any increase or decrease in the value of investments held. There can be no assurance that the use of borrowings will be successful. The Fund has issued preferred shares and borrowed to establish leverage. Investments in derivative instruments may result in economic leverage for the Fund.
Principal Risks
Income Risk. The income investors receive from the Fund is based primarily on the interest it earns from its investments, which can vary widely over the short and long-term. If prevailing market interest rates drop, investors’ income from the Fund could drop as well. The Fund’s income could also be affected adversely when prevailing short-term interest rates increase and the Fund is utilizing leverage, although this risk is mitigated by the Fund’s investment in Senior Loans, which pay floating-rates of interest.
Market Risk. The value of investments held by the Fund may increase or decrease in response to social, economic, political, financial, public health crises or other disruptive events (whether real, expected or perceived) in the U.S. and global markets and include events such as war, natural disasters, epidemics and pandemics, terrorism, conflicts and social unrest. These events may negatively impact broad segments of businesses and populations and may exacerbate pre-existing risks to the Fund. The frequency and magnitude of resulting changes in the value of the Fund’s investments cannot be predicted. Certain securities and other investments held by the Fund may experience increased volatility, illiquidity, or other potentially adverse effects in reaction to changing market conditions. Monetary and/or fiscal actions taken by U.S. or foreign governments to stimulate or stabilize the global economy may not be effective and could lead to high market volatility. No active trading market may exist for certain investments held by the Fund, which may impair the ability of the Fund to sell or to realize the current valuation of such investments in the event of the need to liquidate such assets.
Senior Loans Risk. The risks associated with Senior Loans are similar to the risks of Non-Investment Grade Bonds (discussed below), although Senior Loans are typically senior and secured in contrast to Non-Investment Grade Bonds, which are often subordinated and unsecured. Senior Loans’ higher standing has historically resulted in generally higher recoveries in the event of a corporate reorganization or other restructuring. In addition, because their interest rates are adjusted for changes in short-term interest rates, Senior Loans generally have less interest rate risk than Non-Investment Grade Bonds, which are typically fixed rate. The Fund’s investments in Senior Loans are typically below investment grade and are considered speculative because of the credit risk of their issuers. Such companies are more likely to default on their payments of interest and principal owed to the Fund, and such defaults could reduce the Fund’s NAV and income distributions. An economic downturn generally leads to a higher non-payment rate, and a debt obligation may lose
See Endnotes and Additional Disclosures in this report.
6
Eaton Vance
Senior Income Trust
June 30, 2023
The Fund's Investment Objectives, Principal Strategies and Principal Risks‡ — continued
significant value before a default occurs. Moreover, any specific collateral used to secure a loan may decline in value or lose all its value or become illiquid, which would adversely affect the loan’s value.  “Junior Loans” are secured and unsecured subordinated loans, Second Lien loans and subordinate bridge loans. Senior Loans and Junior Loans are referred to together herein as “loans.”
Loans and other debt securities are also subject to the risk of price declines and to increases in prevailing interest rates, although floating-rate debt instruments are less exposed to this risk than fixed-rate debt instruments. Interest rate changes may also increase prepayments of debt obligations and require the Fund to invest assets at lower yields.
Loans are traded in a private, unregulated inter-dealer or inter-bank resale market and are generally subject to contractual restrictions that must be satisfied before a loan can be bought or sold. These restrictions may impede the Fund’s ability to buy or sell loans (thus affecting their liquidity) and may negatively impact the transaction price. See also “Market Risk” above. It also may take longer than seven days for transactions in loans to settle. The types of covenants included in loan agreements generally vary depending on market conditions, the creditworthiness of the issuer, the nature of the collateral securing the loan and possibly other factors. Loans with fewer covenants that restrict activities of the borrower may provide the borrower with more flexibility to take actions that may be detrimental to the loan holders and provide fewer investor protections in the event of such actions or if covenants are breached. The Fund may experience relatively greater realized or unrealized losses or delays and expense in enforcing its rights with respect to loans with fewer restrictive covenants. Loans to entities located outside of the U.S. may have substantially different lender protections and covenants as compared to loans to U.S. entities and may involve greater risks.  The Fund may have difficulties and incur expense enforcing its rights with respect to non-U.S. loans and such loans could be subject to bankruptcy laws that are materially different than in the U.S.  Loans may be structured such that they are not securities under securities law, and in the event of fraud or misrepresentation by a borrower, lenders may not have the protection of the anti-fraud provisions of the federal securities laws. Loans are also subject to risks associated with other types of income investments, including credit risk and risks of lower rated investments.
Credit Risk. Investments in fixed-income and other debt obligations, including loans, (referred to below as “debt instruments”) are subject to the risk of non-payment of scheduled principal and interest. Changes in economic conditions or other circumstances may reduce the capacity of the party obligated to make principal and interest payments on such instruments and may lead to defaults. Such non-payments and defaults may reduce the value of Fund shares and income distributions. The value of debt instruments also may decline because of concerns about the issuer’s ability to make principal and interest payments. In addition, the credit ratings of debt instruments may be lowered if the financial condition of the party obligated to make payments with respect to such instruments deteriorates. In the event of bankruptcy of the issuer of a debt instrument, the Fund could experience delays or limitations with respect to its ability to realize the benefits of any collateral securing the instrument. In order to enforce its rights in the event of a default, bankruptcy or similar situation, the Fund may be required to retain legal or similar counsel, which may increase the Fund’s operating expenses and adversely affect NAV. Due to their lower place in the borrower’s capital structure, Junior Loans involve a higher degree of overall risk than Senior Loans to the same borrower.
Additional Risks of Loans. Loans are traded in a private, unregulated inter-dealer or inter-bank resale market and are generally subject to contractual restrictions that must be satisfied before a loan can be bought or sold. These restrictions may impede the Fund’s ability to buy or sell loans (thus affecting their liquidity) and may negatively impact the transaction price. See also “Market Risk” above. It also may take longer than seven days for transactions in loans to settle. The types of covenants included in loan agreements generally vary depending on market conditions, the creditworthiness of the issuer, the nature of the collateral securing the loan and possibly other factors. Loans with fewer covenants that restrict activities of the borrower may provide the borrower with more flexibility to take actions that may be detrimental to the loan holders and provide fewer investor protections in the event of such actions or if covenants are breached. The Fund may experience relatively greater realized or unrealized losses or delays and expense in enforcing its rights with respect to loans with fewer restrictive covenants. Loans to entities located outside of the U.S. may have substantially different lender protections and covenants as compared to loans to U.S. entities and may involve greater risks. The Fund may have difficulties and incur expense enforcing its rights with respect to non-U.S. loans and such loans could be subject to bankruptcy laws that are materially different than in the U.S. Loans may be structured such that they are not securities under securities law, and in the event of fraud or misrepresentation by a borrower, lenders may not have the protection of the anti-fraud provisions of the federal securities laws. Loans are also subject to risks associated with other types of income investments, including credit risk and risks of lower rated investments.
Lower Rated Investments Risk. Investments rated below investment grade and comparable unrated investments (sometimes referred to as “junk”) are speculative because of increased credit risk relative to other fixed income investments. Changes in economic conditions or other circumstances typically have a greater effect on the ability of issuers of lower rated investments to make principal and interest payments than they do on issuers of higher rated investments. An economic downturn generally leads to a higher non-payment rate, and a lower rated investment may lose significant value before a default occurs. Lower rated investments typically are subject to greater price volatility and illiquidity than higher rated investments.
Interest Rate Risk. In general, the value of income securities will fluctuate based on changes in interest rates. The value of these securities is likely to increase when interest rates fall and decline when interest rates rise. Duration measures the time-weighted expected cash flows of a fixed-income security, while maturity refers to the amount of time until a fixed-income security matures. Generally, securities with longer durations or maturities are more sensitive to changes in interest rates than securities with shorter durations or maturities, causing them to be more volatile. Conversely, fixed-income securities with shorter durations or maturities will be less volatile but may provide lower returns than fixed-income securities with longer durations or maturities. The impact of interest rate changes is significantly less for floating-rate instruments that have relatively short periodic rate resets (e.g., ninety days or less). In a rising interest rate environment, the duration of income securities that have the ability to be prepaid or called by the issuer may be extended. In a declining interest rate environment, the proceeds from prepaid or maturing instruments may have to be reinvested at a lower interest rate.
See Endnotes and Additional Disclosures in this report.
7
Eaton Vance
Senior Income Trust
June 30, 2023
The Fund's Investment Objectives, Principal Strategies and Principal Risks‡ — continued
LIBOR Risk. The London Interbank Offered Rate or LIBOR historically has been used throughout global banking and financial industries to determine interest rates for a variety of financial instruments (such as debt instruments and derivatives) and borrowing arrangements. Upon a determination by regulators to phase out the use of LIBOR, market participants have been transitioning to the use of alternative reference rates over the past few years.  As of June 30, 2023, the administrator of LIBOR ceased publishing LIBOR settings. In addition, global regulators have announced that, with limited exceptions, no new LIBOR-based contracts should be entered into after 2021. Certain instruments held by the Fund have been subject to an interest rate based on LIBOR. Although the transition process away from LIBOR has become increasingly well defined, the impact on certain debt securities, derivatives and other financial instruments that utilize LIBOR remains uncertain. The transition process may involve, among other things, increased volatility or illiquidity in markets for instruments that were historically based on LIBOR, such as floating-rate debt obligations. Any such effects of the transition away from LIBOR and the adoption of alternative reference rates, as well as other unforeseen effects, could result in losses to the Fund. Furthermore, the risks associated with the expected discontinuation of LIBOR and transition to replacement rates may be exacerbated if an orderly transition to an alternative reference rate is not completed in a timely manner.
Non-Investment Grade Bonds Risk. The Fund’s investments in Non-Investment Grade Bonds, commonly referred to as “junk bonds,” are predominantly speculative because of the credit risk of their issuers. While offering a greater potential opportunity for capital appreciation and higher yields, Non-Investment Grade Bonds typically entail greater potential price volatility and may be less liquid than higher-rated securities. Issuers of Non-Investment Grade Bonds are more likely to default on their payments of interest and principal owed to the Fund, and such defaults will reduce the Fund’s NAV and income distributions. The prices of these lower rated obligations are more sensitive to negative developments than higher rated securities. Adverse business conditions, such as a decline in the issuer’s revenues or an economic downturn, generally lead to a higher non-payment rate. In addition, a security may lose significant value before a default occurs as the market adjusts to expected higher non-payment rates.
Prepayment Risk. During periods of declining interest rates or for other purposes, Borrowers may exercise their option to prepay principal earlier than scheduled. For fixed-income securities, such payments often occur during periods of declining interest rates, forcing the Fund to reinvest in lower yielding securities. This is known as call or prepayment risk. Non-Investment Grade Bonds frequently have call features that allow the issuer to redeem the security at dates prior to its stated maturity at a specified price (typically greater than par) only if certain prescribed conditions are met (“call protection”). An issuer may redeem a Non-Investment Grade Bond if, for example, the issuer can refinance the debt at a lower cost due to declining interest rates or an improvement in the credit standing of the issuer. Senior Loans typically have no such call protection. For premium bonds (bonds acquired at prices that exceed their par or principal value) purchased by the Fund, prepayment risk may be enhanced.
Issuer Risk. The value of corporate income-producing securities held by the Fund may decline for a number of reasons, which directly relate to the issuer, such as management performance, financial leverage and reduced demand for the issuer’s goods and services.
Leverage Risk. Leverage, including leverage from the issuance of preferred shares and borrowings, creates risks, including the likelihood of greater volatility of NAV and market price of, and distributions from, the common shares and the risk that fluctuations in dividend rates on preferred shares and in the costs of borrowings may affect the return to common shareholders. To the extent the income derived from investments purchased with funds received from leverage exceeds the cost of leverage, the Fund’s distributions will be greater than if leverage had not been used. Conversely, if the income from the investments purchased with such funds is not sufficient to cover the cost of leverage, the amount of income available for distribution to common shareholders will be less than if leverage had not been used. In the latter case, the investment adviser may nevertheless determine to maintain the Fund’s leveraged position if it deems such action to be appropriate. While the Fund has preferred shares or borrowings outstanding, an increase in short-term rates would also result in an increased cost of leverage, which would adversely affect the Fund’s income available for distribution. In connection with its borrowings and preferred shares, the Fund will be required to maintain specified asset coverage by applicable federal securities laws and (as applicable) the terms of the preferred shares and its credit facility. The Fund may be required to dispose of portfolio investments on unfavorable terms if market fluctuations or other factors cause the required asset coverage to be less than the prescribed amount. There can be no assurance that a leveraging strategy will be successful.
Foreign Investment Risk. Foreign investments can be adversely affected by political, economic and market developments abroad, including the imposition of economic and other sanctions by the United States or another country against a particular country or countries, organizations, entities and/or individuals. There may be less publicly available information about foreign issuers because they may not be subject to reporting practices, requirements or regulations comparable to those to which United States companies are subject. Adverse changes in investment regulations, capital requirements or exchange controls could adversely affect the value of the Fund’s investments. Foreign markets may be smaller, less liquid and more volatile than the major markets in the United States, and as a result, Fund share values may be more volatile. Trading in foreign markets typically involves higher expense than trading in the United States. The Fund may have difficulties enforcing its legal or contractual rights in a foreign country.
Emerging Markets Investment Risk. Investment markets within emerging market countries are typically smaller, less liquid, less developed and more volatile than those in more developed markets like the United States, and may be focused in certain sectors. Emerging market securities often involve greater risks than developed market securities. The information available about an emerging market issuer may be less reliable than for comparable issuers in more developed capital markets.
Currency Risk. Exchange rates for currencies fluctuate daily. The value of foreign investments may be affected favorably or unfavorably by changes in currency exchange rates in relation to the U.S. dollar. Currency markets generally are not as regulated as securities markets and currency transactions are subject to settlement, custodial and other operational risks.
See Endnotes and Additional Disclosures in this report.
8
Eaton Vance
Senior Income Trust
June 30, 2023
The Fund's Investment Objectives, Principal Strategies and Principal Risks‡ — continued
Derivatives Risk. The Fund’s exposure to derivatives involves risks different from, or possibly greater than, the risks associated with investing directly in securities and other investments. The use of derivatives can lead to losses because of adverse movements in the price or value of the security, instrument, index, currency, commodity, economic indicator or event underlying a derivative (“reference instrument”), due to failure of a counterparty or due to tax or regulatory constraints. Derivatives may create leverage in the Fund, which represents a non-cash exposure to the underlying reference instrument. Leverage can increase both the risk and return potential of the Fund. Derivatives risk may be more significant when derivatives are used to enhance return or as a substitute for a cash investment position, rather than solely to hedge the risk of a position held by the Fund. Use of derivatives involves the exercise of specialized skill and judgment, and a transaction may be unsuccessful in whole or in part because of market behavior or unexpected events. Changes in the value of a derivative (including one used for hedging) may not correlate perfectly with the underlying reference instrument. Derivative instruments traded in over-the-counter markets may be difficult to value, may be illiquid, and may be subject to wide swings in valuation caused by changes in the value of the underlying reference instrument. If a derivative’s counterparty is unable to honor its commitments, the value of Fund shares may decline and the Fund could experience delays in (or be unable to achieve) the return of collateral or other assets held by the counterparty. The loss on derivative transactions may substantially exceed the initial investment. A derivative investment also involves the risks relating to the reference instrument underlying the investment.
U.S. Government Securities Risk. Although certain U.S. Government sponsored agencies (such as the Federal Home Loan Mortgage Corporation and the Federal National Mortgage Association) may be chartered or sponsored by acts of Congress, their securities are neither issued nor guaranteed by the U.S. Treasury. U.S. Treasury securities generally have a lower return than other obligations because of their higher credit quality and market liquidity.
Pooled Investment Vehicles Risk. Pooled investment vehicles are open- and closed-end investment companies and exchange-traded funds (“ETFs”). Pooled investment vehicles are subject to the risks of investing in the underlying securities or other investments.  Shares of closed-end investment companies and ETFs may trade at a premium or discount to NAV and are subject to secondary market trading risks.  In addition, the Fund will bear a pro rata portion of the operating expenses of a pooled investment vehicle in which it invests.
Equity Securities Risk. The value of equity securities and related instruments may decline in response to adverse changes in the economy or the economic outlook; deterioration in investor sentiment; interest rate, currency, and commodity price fluctuations; adverse geopolitical, social or environmental developments; issuer and sector-specific considerations; unexpected trading activity among retail investors; or other factors. Market conditions may affect certain types of stocks to a greater extent than other types of stocks. If the stock market declines in value, the value of the Fund’s equity securities will also likely decline. Although prices can rebound, there is no assurance that values will return to previous levels.
Liquidity Risk. The Fund is exposed to liquidity risk when trading volume, lack of a market maker or trading partner, large position size, market conditions, or legal restrictions impair its ability to sell particular investments or to sell them at advantageous market prices. Consequently, the Fund may have to accept a lower price to sell an investment or continue to hold it or keep the position open, sell other investments to raise cash or abandon an investment opportunity, any of which could have a negative effect on the Fund’s performance. These effects may be exacerbated during times of financial or political stress.
Market Discount Risk. As with any security, the market value of the common shares may increase or decrease from the amount initially paid for the common shares. The Fund’s common shares have traded both at a premium and at a discount relative to NAV. The shares of closed-end management investment companies frequently trade at a discount from their NAV. This is a risk separate and distinct from the risk that the Fund’s NAV may decrease.
Money Market Instrument Risk. Money market instruments may be adversely affected by market and economic events, such as a sharp rise in prevailing short-term interest rates; adverse developments in the banking industry, which issues or guarantees many money market instruments; adverse economic, political or other developments affecting issuers of money market instruments; changes in the credit quality of issuers; and default by a counterparty.
Reinvestment Risk. Income from the Fund’s portfolio will decline if and when the Fund invests the proceeds from matured, traded or called debt obligations into lower yielding instruments.
Inflation Risk. Inflation risk is the risk that the value of assets or income from investments will be worth less in the future as inflation decreases the value of money. As inflation increases, the real value of the common shares and distributions thereon can decline. In addition, during any periods of rising inflation, dividend rates of preferred shares would likely increase, which would tend to further reduce returns to common shareholders. This risk is mitigated to some degree by the Fund’s investments in Senior Loans.
Risks Associated with Active Management. The success of the Fund’s investment strategy depends on portfolio management’s successful application of analytical skills and investment judgment. Active management involves subjective decisions and there is no guarantee that such decisions will produce the desired results or expected returns.
Recent Market Conditions. The outbreak of COVID-19 and efforts to contain its spread have resulted in closing borders, enhanced health screenings, changes to healthcare service preparation and delivery, quarantines, cancellations, disruptions to supply chains and customer activity, as well as general concern and uncertainty. The impact of this coronavirus, and the effects of other infectious illness outbreaks, epidemics and pandemics, may be short term or may continue for an extended period of time. Health crises caused by outbreaks of disease, such as the coronavirus outbreak, may exacerbate other pre-existing political, social and economic risks and disrupt normal market conditions and operations. For example, a global pandemic or other widespread health crisis could cause substantial market volatility and exchange trading suspensions and closures. In addition, the increasing interconnectedness of
See Endnotes and Additional Disclosures in this report.
9
Eaton Vance
Senior Income Trust
June 30, 2023
The Fund's Investment Objectives, Principal Strategies and Principal Risks‡ — continued
markets around the world may result in many markets being affected by events or conditions in a single country or region or events affecting a single or small number of issuers. The coronavirus outbreak and public and private sector responses thereto have led to large portions of the populations of many countries working from home for indefinite periods of time, temporary or permanent layoffs, disruptions in supply chains, and lack of availability of certain goods. The impact of such responses could adversely affect the information technology and operational systems upon which the Fund and the Fund’s service providers rely, and could otherwise disrupt the ability of the employees of the Fund’s service providers to perform critical tasks relating to the Fund. Any such impact could adversely affect the Fund’s performance, or the performance of the securities in which the Fund invests and may lead to losses on your investment in the Fund.
Cybersecurity Risk. With the increased use of technologies by Fund service providers to conduct business, such as the Internet, the Fund is susceptible to operational, information security and related risks. The Fund relies on communications technology, systems, and networks to engage with clients, employees, accounts, shareholders, and service providers, and a cyber incident may inhibit the Fund’s ability to use these technologies. In general, cyber incidents can result from deliberate attacks or unintentional events. Cybersecurity failures by or breaches of the Fund’s investment adviser or administrator and other service providers (including, but not limited to, the custodian or transfer agent), and the issuers of securities in which the Fund invests, may disrupt and otherwise adversely affect their business operations. This may result in financial losses of the Fund, impede Fund trading, interfere with the Fund’s ability to calculate its NAV, limit a Fund shareholders’ ability to transact business or cause violations of applicable privacy and other laws, regulatory fines, penalties, reputational damage, reimbursement or other compensation costs, litigation costs, or additional compliance costs.
Geopolitical Risk. The increasing interconnectivity between global economies and markets increases the likelihood that events or conditions in one country, region, sector, industry or market or, with respect to one company, may adversely impact issuers in a different country, region, industry or market. For example, adverse developments in the banking or financial services could impact companies operating in various sectors or industries and adversely impact the Fund’s investments. Securities in a Fund’s portfolio may underperform due to inflation (or expectations for inflation), interest rates, global demand for particular products or resources, natural disasters, health emergencies (such as epidemics and pandemics), terrorism, regulatory events and governmental or quasi-governmental actions. The occurrence of global events similar to those in recent years, such as terrorist attacks around the world, natural disasters, health emergencies, social and political discord, war or debt crises and downgrades, among others, may result in market volatility and may have long term effects on both the U.S. and global financial markets. Other financial, economic and other global market and social developments or disruptions may result in similar adverse circumstances, and it is difficult to predict when similar events affecting the U.S. or global financial markets may occur, the effects that such events may have and the duration of those effects (which may last for extended periods). Such global events may negatively impact broad segments of businesses and populations, cause a significant negative impact on the performance of the Fund’s investments, adversely affect and increase the volatility of the Fund’s share price and/or exacerbate preexisting political, social and economic risks to the Fund. The Fund’s operations may be interrupted and any such event(s) could have a significant adverse impact on the value and risk profile of the Fund’s portfolio. There is a risk that you may lose money by investing in the Fund.
Regulatory Risk. To the extent that legislation or state or federal regulators that regulate certain financial institutions impose additional requirements or restrictions with respect to the ability of such institutions to make loans, particularly in connection with highly leveraged transactions, the availability of Senior Loans for investment may be adversely affected. Further, such legislation or regulation could depress the market value of Senior Loans.
Market Disruption. Global instability, war, geopolitical tensions and terrorist attacks in the United States and around the world have previously resulted, and may in the future result in market volatility and may have long-term effects on the United States and worldwide financial markets and may cause further economic uncertainties in the United States and worldwide. The Fund cannot predict the effects of significant future events on the global economy and securities markets. A similar disruption of the financial markets could impact interest rates, auctions, secondary trading, ratings, credit risk, inflation and other factors relating to the common shares. In particular, Non-Investment Grade Bonds and Senior Loans tend to be more volatile than higher rated fixed-income securities so that these events and any actions resulting from them may have a greater impact on the prices and volatility of Non-Investment Grade Bonds and Senior Loans than on higher rated fixed-income securities.
Anti-Takeover Provisions. The Fund’s Agreement and Declaration of Trust (the “Declaration of Trust”) and Amended and Restated By-Laws include provisions that could have the effect of limiting the ability of other persons or entities to acquire control of the Fund or to change the composition of its Board. For example, pursuant to the Fund’s Declaration of Trust, the Board is divided into three classes of Trustees with each class serving for a three-year term and certain types of transactions require the favorable vote of holders of at least 75% of the outstanding shares of the Fund.
General Fund Investing Risks. The Fund is not a complete investment program and there is no guarantee that the Fund will achieve its investment objective. It is possible to lose money by investing in the Fund. An investment in the Fund is not a deposit in a bank and is not insured or guaranteed by the Federal Deposit Insurance Corporation or any other government agency.
Potential Conflicts of Interest
As a diversified global financial services firm, Morgan Stanley, the parent company of the investment adviser, engages in a broad spectrum of activities where Morgan Stanley’s interests or the interests of its clients may conflict with the interests of the Fund. Morgan Stanley advises clients and sponsors, manages or advises other investment funds and investment programs, accounts and businesses (collectively, together with any new or successor Morgan Stanley funds, programs, accounts or businesses, (other than funds, programs, accounts or businesses sponsored, managed, or advised by former direct or indirect subsidiaries of Eaton Vance Corp. (“Eaton Vance Investment Accounts”)), the “MS Investment Accounts,” and, together with the Eaton Vance
See Endnotes and Additional Disclosures in this report.
10
Eaton Vance
Senior Income Trust
June 30, 2023
The Fund's Investment Objectives, Principal Strategies and Principal Risks‡ — continued
Investment Accounts, the ‘‘Affiliated Investment Accounts’’) with a wide variety of investment objectives that in some instances may overlap or conflict with a Fund’s investment objectives and present conflicts of interest. There is no assurance that conflicts of interest will be resolved in favor of Fund shareholders and, in fact, they may not be. Conflicts of interest not described below may also exist.
Material Non-Public Information. It is expected that confidential or material non-public information regarding an investment or potential investment opportunity may become available to the investment adviser. If such information becomes available, the investment adviser may be precluded (including by applicable law or internal policies or procedures) from pursuing an investment or disposition opportunity with respect to such investment or investment opportunity. Morgan Stanley has established certain information barriers and other policies to address the sharing of information between different businesses within Morgan Stanley.
Investments by Morgan Stanley and its Affiliated Investment Accounts. In serving in multiple capacities to Affiliated Investment Accounts, Morgan Stanley, including the investment adviser and its investment teams, may have obligations to other clients or investors in Affiliated Investment Accounts, the fulfillment of which may not be in the best interests of a Fund or its shareholders. A Fund’s investment objectives may overlap with the investment objectives of certain Affiliated Investment Accounts. As a result, the members of an investment team may face conflicts in the allocation of investment opportunities among a Fund and other investment funds, programs, accounts and businesses advised by or affiliated with the investment adviser. Certain Affiliated Investment Accounts may provide for higher management or incentive fees or greater expense reimbursements or overhead allocations, all of which may contribute to this conflict of interest and create an incentive for the investment adviser to favor such other accounts. To seek to reduce potential conflicts of interest and to attempt to allocate investment opportunities in a fair and equitable manner, the investment adviser has implemented allocation policies and procedures. These policies and procedures are intended to give all clients of the investment adviser, including the Fund(s), fair access to investment opportunities, consistent with the requirements of organizational documents, investment strategies, applicable laws and regulations, and the fiduciary duties of the investment adviser.
Investments by Separate Investment Departments. The entities and individuals that provide investment-related services for the Fund and certain other Eaton Vance Investment Accounts (the “Eaton Vance Investment Department”) may be different from the entities and individuals that provide investment-related services to MS Investment Accounts (the “MS Investment Department” and, together with the Eaton Vance Investment Department, the “Investment Departments”). Although Morgan Stanley has implemented information barriers between the Investment Departments in accordance with internal policies and procedures, each Investment Department may engage in discussions and share information and resources with the other Investment Department on certain investment-related matters. A MS Investment Account could trade in advance of a Fund (and vice versa), might complete trades more quickly and efficiently than a Fund, and/or achieve different execution than a Fund on the same or similar investments made contemporaneously.
Morgan Stanley Trading and Principal Investing Activities. Notwithstanding anything to the contrary herein, Morgan Stanley will generally conduct its sales and trading businesses, publish research and analysis, and render investment advice without regard for a Fund’s holdings, although these activities could have an adverse impact on the value of one or more of the Fund’s investments, or could cause Morgan Stanley to have an interest in one or more portfolio investments that is different from, and potentially adverse to, that of a Fund.
Morgan Stanley’s Investment Banking and Other Commercial Activities. Morgan Stanley advises clients on a variety of mergers, acquisitions, restructuring, bankruptcy and financing transactions. Morgan Stanley may act as an advisor to clients, including other investment funds that may compete with a Fund and with respect to investments that a Fund may hold. Morgan Stanley may give advice and take action with respect to any of its clients or proprietary accounts that may differ from the advice given, or may involve an action of a different timing or nature than the action taken, by a Fund.
General Process for Potential Conflicts. All of the transactions described above involve the potential for conflicts of interest between the investment adviser, related persons of the investment adviser and/or their clients. The Investment Advisers Act of 1940, as amended (the “Advisers Act”), the Investment Company Act of 1940, as amended (the “1940 Act”), and the Employee Retirement Income Security Act, as amended (“ERISA”) impose certain requirements designed to decrease the possibility of conflicts of interest between an investment adviser and its clients. In some cases, transactions may be permitted subject to fulfillment of certain conditions. Certain other transactions may be prohibited. In addition, the investment adviser has instituted policies and procedures designed to prevent conflicts of interest from arising and, when they do arise, to ensure that it effects transactions for clients in a manner that is consistent with its fiduciary duty to its clients and in accordance with applicable law.
Important Notice to Shareholders
The following information in this annual report is a summary of certain changes since June 30, 2022. This information may not reflect all of the changes that have occurred since you purchased this Fund.
Effective July 1, 2022, Sarah Choi was added to the portfolio management team. Ms. Choi is a Vice President of Eaton Vance Management (“EVM”) and has been a portfolio manager of the Fund since July 2022. Ms. Choi has been employed by EVM since October 2019 and manages other Eaton Vance funds. Prior to joining EVM, Ms. Choi worked as a Senior Credit Analyst at Apex Credit Partners from 2014 to 2019.
Effective March 31, 2023, Sarah A. Choi, Catherine C. McDermott, Daniel P. McElaney and Andrew N. Sveen are the portfolio managers of the Fund.
See Endnotes and Additional Disclosures in this report.
11
Eaton Vance
Senior Income Trust
June 30, 2023
Summary of Fund Expenses
The purpose of the table below is to help you understand all fees and expenses that you, as a common shareholder, would bear directly or indirectly. The table reflects the Trust’s issuance of preferred shares and borrowings, and shows Trust expenses as a percentage of net assets attributable to common shares for the year ended June 30, 2023.
Common shareholder transaction expenses  
Sales load paid by you (as a percentage of offering price) — 1
Offering expenses (as a percentage of offering price) None 2
Dividend reinvestment plan fees $5.003
Annual expenses Percentage of net assets attributable to common shares4
Investment adviser fee 1.11%5
Interest and fee expense6 1.057
Other expenses 0.88
Acquired fund fees and expenses 0.07
Total annual Trust operating expenses 3.11%
Dividends on preferred shares 1.697
Total annual Trust operating expenses and dividends on preferred shares 4.80%
Example
The following example illustrates the expenses that common shareholders would pay on a $1,000 investment in common shares, assuming (i) total annual expenses and dividends on preferred shares of 4.80% of net assets attributable to common shares in years 1 through 10; (ii) a 5% annual return; and (iii) all distributions are reinvested at NAV:
1 Year 3 Years 5 Years 10 Years
$48 $144 $241 $485
The above table and example and the assumption in the example of a 5% annual return are required by regulations of the U.S. Securities and Exchange Commission (“SEC”) that are applicable to all investment companies; the assumed 5% annual return is not a prediction of, and does not represent, the projected or actual performance of the Trust’s common shares. In addition, while the example assumes reinvestment of all dividends and distributions at NAV, participants in the Trust’s dividend reinvestment plan may receive common shares purchased or issued at a price or value different from NAV. The example does not include sales load or estimated offering costs, which would cause the expenses shown in the example to increase. The example should not be considered a representation of past or future expenses, and the Trust’s actual expenses may be greater or less than those shown. Moreover, the Trust’s actual rate of return may be greater or less than the hypothetical 5% return shown in the example.
1    If common shares are sold to or through underwriters, the Prospectus Supplement will set forth any applicable sales load.
2    Eaton Vance Management (“EVM”) will pay the expenses of the offering (other than the applicable commissions); therefore, offering expenses are not included in the Summary of Fund Expenses. Offering expenses generally include, but are not limited to, the preparation, review and filing with the SEC of the Trust’s registration statement (including its current Prospectus Supplement, the accompanying Prospectus and Statement of Additional Information (“SAI”)), the preparation, review and filing of any associated marketing or similar materials, costs associated with the printing, mailing or other distribution of its current Prospectus Supplement, the accompanying Prospectus, SAI and/or marketing materials, associated filing fees, stock exchange listing fees, and legal and auditing fees associated with the offering.
3    You will be charged a $5.00 service charge and pay brokerage charges if you direct the plan agent to sell your common shares held in a dividend reinvestment account.
4    Stated as a percentage of average net assets attributable to common shares for the year ended June 30, 2023.
5    The investment adviser fee paid by the Trust to EVM is based on the average weekly gross assets of the Trust, including all assets attributable to any form of investment leverage that the Trust may utilize. Accordingly, if the Trust were to increase investment leverage in the future, the investment adviser fee will increase as a percentage of net assets. Pursuant to the investment advisory agreement, the investment adviser fee was computed at an annual rate of 0.72% of the Trust’s average weekly gross assets through April 30, 2023 and beginning May 1, 2023, at 0.71% of the Trust’s average weekly gross assets, and is payable monthly. The annual investment adviser fee rate shall be reduced to the following as of the stated date: May 1, 2024: 0.70%, May 1, 2025: 0.69% and May 1, 2026: 0.55%.
6    Interest and fee expense relates to the notes payable.
12
Eaton Vance
Senior Income Trust
June 30, 2023
Summary of Fund Expenses — continued
7    As of June 30, 2023, the outstanding borrowings represented approximately 12.15% leverage and the preferred shares represented approximately 22.83% leverage, totaling 34.98% leverage.
13
Eaton Vance
Senior Income Trust
June 30, 2023
Trading and NAV Information
The Trust’s common shares have traded both at a premium and a discount to NAV. The Trust cannot predict whether its shares will trade in the future at a premium or discount to NAV. The provisions of the Investment Company Act of 1940, as amended (the “1940 Act”), generally require that the public offering price of common shares (less any underwriting commissions and discounts) must equal or exceed the NAV per share of a company’s common stock. The issuance of common shares may have an adverse effect on prices in the secondary market for the Trust’s common shares by increasing the number of common shares available, which may put downward pressure on the market price for the Trust’s common shares. Shares of common stock of closed-end investment companies frequently trade at a discount from NAV.
In addition, the Trust’s Board of Trustees has authorized the Trust to repurchase up to 10% of its outstanding common shares as of the last day of the prior calendar year at market prices when shares are trading at a discount to net asset value. The share repurchase program does not obligate the Trust to purchase a specific amount of shares. The results of the share repurchase program are disclosed in the Trust’s annual and semi-annual reports to shareholders.
The following table sets forth for each of the periods indicated the high and low closing market prices for the common shares on the New York Stock Exchange, and the corresponding NAV per share and the premium or discount to NAV per share at which the Trust’s common shares were trading as of such date.
  Market Price ($)   NAV per Share on
Date of Market Price ($) 		  NAV Premium/(Discount) on
Date of Market Price (%)
Fiscal Quarter Ended High Low   High Low   High Low
June 30, 2023 5.46 5.21   6.11 6.00   (10.64) (13.17)
March 31, 2023 5.76 5.25   6.15 5.98   (6.34) (12.21)
December 31, 2022 5.51 5.12   6.00 5.92   (8.17) (13.51)
September 30, 2022 5.86 5.24   6.36 6.01   (7.86) (12.81)
June 30, 2022 6.44 5.37   6.80 6.21   (5.29) (13.53)
March 31, 2022 7.00 6.07   6.94 6.64   0.86 (8.58)
December 31, 2021 7.20 6.56   6.97 6.88   3.30 (4.65)
September 30, 2021 7.12 6.63   6.99 6.94   1.86 (4.42)
14
Eaton Vance
Senior Income Trust
June 30, 2023
Senior Securities
The following table sets forth information regarding the Trust’s outstanding bank loans and preferred shares as of the end of each of the Trust’s last ten fiscal years. The information in the table below was taken from the Trust’s financial statements for each fiscal year in the ten-year period ended June 30, 2023, and such financial statements have been audited by Deloitte & Touche LLP, the Trust’s independent registered public accounting firm.
Fiscal Year Ended Notes
Payable
Outstanding
(in 000's) 		Asset
Coverage
per $1,000
of Notes
Payable ¹ 		Preferred
Shares
Outstanding 		Asset
Coverage
per
Preferred
Share ² 		Involuntary
Liquidation
Preference
per
Preferred
Share ³ 		Approximate
Market
Value per
Preferred
Share ³
June 30, 2023 $20,000 $8,235 1,504 $71,481 $25,000 $25,000
June 30, 2022 26,000 6,531 1,504 66,752 25,000 25,000
June 30, 2021 103,000 3,903 1,504 71,484 25,000 25,000
June 30, 2020 95,000 3,866 1,504 69,242 25,000 25,000
June 30, 2019 103,000 3,957 1,504 72,464 25,000 25,000
June 30, 2018 93,000 4,587 2,464 68,989 25,000 25,000
June 30, 2017 92,000 4,613 2,464 69,078 25,000 25,000
June 30, 2016 25,000 15,472 4,400 71,629 25,000 25,000
June 30, 2015 60,000 7,267 4,400 64,119 25,000 25,000
June 30, 2014 65,000 6,970 4,400 64,721 25,000 25,000
1    Calculated by subtracting the Trust’s total liabilities (not including the notes payable and preferred shares) from the Trust’s total assets, and dividing the result by the notes payable balance in thousands.
2    Calculated by subtracting the Trust’s total liabilities (not including the notes payable and preferred shares) from the Trust’s total assets, dividing the result by the sum of the value of the notes payable and liquidation value of the preferred shares, and multiplying the result by the liquidation value of one preferred share.
3    Plus accumulated and unpaid dividends.
15
Eaton Vance
Senior Income Trust
June 30, 2023
Endnotes and Additional Disclosures
†  The views expressed in this report are those of the portfolio manager(s) and are current only through the date stated at the top of this page. These views are subject to change at any time based upon market or other conditions, and Eaton Vance and the Fund(s) disclaim any responsibility to update such views. These views may not be relied upon as investment advice and, because investment decisions are based on many factors, may not be relied upon as an indication of trading intent on behalf of any Eaton Vance fund. This commentary may contain statements that are not historical facts, referred to as “forward-looking statements.” The Fund’s actual future results may differ significantly from those stated in any forward-looking statement, depending on factors such as changes in securities or financial markets or general economic conditions, the volume of sales and purchases of Fund shares, the continuation of investment advisory, administrative and service contracts, and other risks discussed from time to time in the Fund’s filings with the Securities and Exchange Commission.
‡  The information contained herein is provided for informational purposes only and does not constitute a solicitation of an offer to buy or sell Fund shares. Common shares of the Fund are available for purchase and sale only at current market prices in secondary market trading.
   
1 Morningstar® LSTA® US Leveraged Loan IndexSM is an unmanaged index of the institutional leveraged loan market. Morningstar® LSTA® Leveraged Loan indices are a product of Morningstar, Inc. (“Morningstar”) and have been licensed for use. Morningstar® is a registered trademark of Morningstar licensed for certain use. Loan Syndications and Trading Association® and LSTA® are trademarks of the LSTA licensed for certain use by Morningstar, and further sublicensed by Morningstar for certain use. Neither Morningstar nor LSTA guarantees the accuracy and/or completeness of the Morningstar® LSTA® US Leveraged Loan IndexSM or any data included therein, and shall have no liability for any errors, omissions, or interruptions therein. Unless otherwise stated, index returns do not reflect the effect of any applicable sales charges, commissions, expenses, taxes or leverage, as applicable. It is not possible to invest directly in an index.
2 Performance results reflect the effects of leverage. Included in the average annual total return at NAV for the five- and ten-year periods, as applicable, is the impact of the 2017 and 2019 tender and repurchase of a portion of the Fund’s APS at 95% and 92% of the Fund’s APS per share liquidation preference, respectively. Had these transactions not occurred, the total return at NAV would be lower for the Fund.
Included in the average annual total return at NAV for the five- and ten-year periods is the impact of the 2021 tender offer by the Fund for a portion of its common shares at 99% of the Fund’s NAV. Had this tender offer not occurred, the total return at NAV would be lower for the Fund. See Note 6 to the Financial Statements for additional details.
3 The shares of the Fund often trade at a discount or premium to their net asset value. The discount or premium may vary over time and may be higher or lower than what is quoted in this report. For up-to-date premium/discount information, please refer to https://funds.eatonvance.com/closed-end-fund-prices.php.
4 The Distribution Rate is based on the Fund’s last regular distribution per share in the period (annualized) divided by the Fund’s NAV or market price at the end of the period. The Fund’s distributions may be comprised of amounts characterized for federal income tax purposes as qualified and non-qualified ordinary dividends, capital gains and nondividend distributions, also known as return of capital. For additional information about nondividend distributions, please refer to Eaton Vance Closed-End Fund Distribution Notices (19a) posted on our website, eatonvance.com. The Fund will determine the federal income tax character of distributions paid to a shareholder after the end of the calendar year. This is reported on the IRS form 1099-DIV and provided to the shareholder shortly after each year-end. For information about the tax character of distributions made in prior calendar years, please refer to Performance-Tax Character of Distributions on the Fund’s webpage available at eatonvance.com. The Fund’s distributions are determined by the investment adviser based on its current assessment of the Fund’s long-term return potential. Fund distributions may be affected by numerous factors including changes in Fund performance, the cost of financing for leverage, portfolio holdings, realized and projected returns, and other factors. As portfolio and market conditions change, the rate of distributions paid by the Fund could change.
5 Leverage represents the liquidation value of the Fund’s APS and borrowings outstanding as a percentage of Fund net assets applicable to common shares plus APS and borrowings outstanding. Use of leverage creates an opportunity for income, but creates risks including greater price volatility. The cost of leverage rises and falls with changes in short-term interest rates. The Fund may be required to maintain prescribed asset coverage for its leverage and may be required to reduce its leverage at an inopportune time.
  Fund profile subject to change due to active management.
 
16
Eaton Vance
Senior Income Trust
June 30, 2023
Portfolio of Investments 
Asset-Backed Securities — 10.2%
Security Principal
Amount
(000's omitted) 		Value
Ares XXXIIR CLO, Ltd., Series 2014-32RA, Class D, 11.171%, (3 mo. USD LIBOR + 5.85%), 5/15/30(1)(2) $     1,000 $    805,951
Ares XXXIV CLO, Ltd., Series 2015-2A, Class ER, 12.11%, (3 mo. USD LIBOR + 6.85%), 4/17/33(1)(2)         550     474,274
Benefit Street Partners CLO XIX, Ltd., Series 2019-19A, Class E, 12.28%, (3 mo. USD LIBOR + 7.02%), 1/15/33(1)(2)         750     714,454
Benefit Street Partners CLO XVIII, Ltd., Series 2019-18A, Class ER, 12.01%, (3 mo. USD LIBOR + 6.75%), 10/15/34(1)(2)         500     466,210
BlueMountain CLO XXVI, Ltd., Series 2019-26A, Class ER, 12.38%, (3 mo. USD LIBOR + 7.13%), 10/20/34(1)(2)       1,000     919,805
Canyon Capital CLO, Ltd., Series 2019-2A, Class ER, 12.01%, (3 mo. USD LIBOR + 6.75%), 10/15/34(1)(2)         400     362,324
Carlyle Global Market Strategies CLO, Ltd.:       
Series 2012-3A, Class DR2, 11.751%, (3 mo. USD LIBOR + 6.50%), 1/14/32(1)(2)         600     485,591
Series 2015-5A, Class DR, 11.95%, (3 mo. USD LIBOR + 6.70%), 1/20/32(1)(2)         500     405,708
Cedar Funding X CLO, Ltd., Series 2019-10A, Class ER, 11.75%, (3 mo. USD LIBOR + 6.50%), 10/20/32(1)(2)         500     452,344
Galaxy XV CLO, Ltd., Series 2013-15A, Class ER, 11.905%, (3 mo. USD LIBOR + 6.65%), 10/15/30(1)(2)         500     444,078
Galaxy XXI CLO, Ltd., Series 2015-21A, Class ER, 10.50%, (3 mo. USD LIBOR + 5.25%), 4/20/31(1)(2)         500     439,265
Golub Capital Partners CLO 23M, Ltd., Series 2015-23A, Class ER, 11.00%, (3 mo. USD LIBOR + 5.75%), 1/20/31(1)(2)         600     504,157
Neuberger Berman Loan Advisers CLO 31, Ltd., Series 2019-31A, Class ER, 11.75%, (3 mo. USD LIBOR + 6.50%), 4/20/31(1)(2)         500     461,283
Palmer Square CLO, Ltd.:       
Series 2013-2A, Class DRR, 11.11%, (3 mo. USD LIBOR + 5.85%), 10/17/31(1)(2)         450     403,067
Series 2019-1A, Class DR, 11.821%, (3 mo. USD LIBOR + 6.50%), 11/14/34(1)(2)         500     458,907
RAD CLO 7, Ltd., Series 2020-7A, Class E, 11.76%, (3 mo. USD LIBOR + 6.50%), 4/17/33(1)(2)         575     557,168
Regatta XIV Funding, Ltd., Series 2018-3A, Class E, 11.205%, (3 mo. USD LIBOR + 5.95%), 10/25/31(1)(2)         300     260,857
Regatta XVI Funding, Ltd., Series 2019-2A, Class E, 12.26%, (3 mo. USD LIBOR + 7.00%), 1/15/33(1)(2)         500     480,640
Vibrant CLO X, Ltd., Series 2018-10A, Class D, 11.50%, (3 mo. SOFR + 6.45%), 10/20/31(1)(2)         375     279,281
Vibrant CLO XI, Ltd., Series 2019-11A, Class D, 12.02%, (3 mo. USD LIBOR + 6.77%), 7/20/32(1)(2)         500      417,732
Security Principal
Amount
(000's omitted) 		Value
Voya CLO, Ltd., Series 2013-1A, Class DR, 11.728%, (3 mo. SOFR + 6.74%), 10/15/30(1)(2) $     1,000 $    703,816
Wellfleet CLO, Ltd., Series 2020-1A, Class D, 12.50%, (3 mo. USD LIBOR + 7.24%), 4/15/33(1)(2)         550     463,046
Total Asset-Backed Securities
(identified cost $12,529,491) 		    $ 10,959,958
    
Closed-End Funds — 3.0%
Security Shares Value
BlackRock Floating Rate Income Strategies Fund, Inc.      49,400 $    603,174
Invesco Senior Income Trust     178,510     687,264
Nuveen Credit Strategies Income Fund     180,539     911,722
Nuveen Floating Rate Income Fund      73,198     577,532
Nuveen Floating Rate Income Opportunity Fund      51,054     398,221
Total Closed-End Funds
(identified cost $4,361,230) 		    $  3,177,913
    
Common Stocks — 0.9%
Security Shares Value
Aerospace and Defense — 0.1%
IAP Worldwide Services, LLC(3)(4)(5)          28 $    124,146
      $    124,146
Commercial Services & Supplies — 0.2%
Monitronics International, Inc.(4)       4,716 $     67,923
Phoenix Services International, LLC(4)(5)       7,568      75,680
Phoenix Services International, LLC(4)(5)         690       6,900
      $    150,503
Electronics/Electrical — 0.0%(6)
Riverbed Technology, Inc.(3)(4)(5)          85 $          0
Skillsoft Corp.(4)(5)      25,137      31,170
      $     31,170
Household Durables — 0.6%
Serta Simmons Bedding, Inc.(4)(5)      35,996 $    566,937
      $    566,937
Investment Companies — 0.0%(6)
Aegletes B.V.(4)(5)       6,311 $     17,145
Jubilee Topco, Ltd., Class A(3)(4)(5)     995,275           0
      $     17,145
 
17
See Notes to Financial Statements.
Eaton Vance
Senior Income Trust
June 30, 2023
Portfolio of Investments  — continued
Security Shares Value
Pharmaceuticals — 0.0%
Covis Midco 1 S.a.r.l., Class A(4)(5)         147 $         75
Covis Midco 1 S.a.r.l., Class B(4)(5)         147          75
Covis Midco 1 S.a.r.l., Class C(4)(5)         147          75
Covis Midco 1 S.a.r.l., Class D(4)(5)         147          75
Covis Midco 1 S.a.r.l., Class E(4)(5)         147          75
      $        375
Retailers (Except Food and Drug) — 0.0%(6)
Phillips Feed Service, Inc.(3)(4)(5)         269 $     17,646
      $     17,646
Telecommunications — 0.0%
Global Eagle Entertainment(3)(4)(5)      21,114 $          0
      $          0
Total Common Stocks
(identified cost $1,692,422) 		    $    907,922
    
Convertible Preferred Stocks — 0.0%
Security Shares Value
Electronics/Electrical — 0.0%
Riverbed Technology, Inc., Series A, 6.50%, (1.50% cash, 5.00% PIK)(3)(5)          28 $          0
Total Convertible Preferred Stocks
(identified cost $829) 		    $          0
    
Corporate Bonds — 6.6%
Security Principal
Amount
(000's omitted) 		Value
Aerospace and Defense — 0.1%
TransDigm, Inc., 4.875%, 5/1/29 $       135 $    120,753
      $    120,753
Automotive — 0.5%
Clarios Global, L.P./Clarios U.S. Finance Co., 8.50%, 5/15/27(1) $       500 $    501,755
      $    501,755
Building and Development — 0.2%
Smyrna Ready Mix Concrete, LLC, 6.00%, 11/1/28(1) $       135 $    127,482
Security Principal
Amount
(000's omitted) 		Value
Building and Development (continued)
Standard Industries, Inc., 4.75%, 1/15/28(1) $       135 $    125,853
      $    253,335
Business Equipment and Services — 1.0%
GEMS MENASA Cayman, Ltd./GEMS Education Delaware, LLC, 7.125%, 7/31/26(1) $       500 $    484,578
Prime Security Services Borrower, LLC/Prime Finance, Inc.:       
5.25%, 4/15/24(1)         260     258,090
5.75%, 4/15/26(1)         325     319,321
      $  1,061,989
Cable and Satellite Television — 0.1%
CCO Holdings, LLC/CCO Holdings Capital Corp., 4.50%, 8/15/30(1) $       135 $    112,535
      $    112,535
Chemicals and Plastics — 0.5%
NOVA Chemicals Corp., 4.875%, 6/1/24(1) $       500 $    488,940
      $    488,940
Cosmetics/Toiletries — 0.1%
Edgewell Personal Care Co., 5.50%, 6/1/28(1) $       135 $    127,750
      $    127,750
Distribution & Wholesale — 0.4%
BCPE Empire Holdings, Inc., 7.625%, 5/1/27(1) $       135 $    125,697
Performance Food Group, Inc., 5.50%, 10/15/27(1)         300     289,494
      $    415,191
Diversified Financial Services — 0.1%
VistaJet Malta Finance PLC/Vista Management Holding, Inc., 6.375%, 2/1/30(1) $       135 $    108,828
      $    108,828
Engineering & Construction — 0.1%
TopBuild Corp., 3.625%, 3/15/29(1) $       135 $    117,648
      $    117,648
Entertainment — 0.5%
Caesars Entertainment, Inc., 8.125%, 7/1/27(1) $       500 $    512,297
      $    512,297
 
18
See Notes to Financial Statements.
Eaton Vance
Senior Income Trust
June 30, 2023
Portfolio of Investments  — continued
Security Principal
Amount
(000's omitted) 		Value
Financial Intermediaries — 0.4%
Ford Motor Credit Co., LLC, 3.815%, 11/2/27 $       500 $    447,352
      $    447,352
Food Service — 0.1%
Albertsons Cos., Inc./Safeway, Inc./New Albertsons L.P./Albertsons, LLC, 3.50%, 3/15/29(1) $       135 $    116,992
      $    116,992
Health Care — 0.8%
Centene Corp., 3.375%, 2/15/30 $       135 $    116,146
LifePoint Health, Inc., 5.375%, 1/15/29(1)         135      79,866
Tenet Healthcare Corp., 6.875%, 11/15/31         500     499,460
US Acute Care Solutions, LLC, 6.375%, 3/1/26(1)         135     115,733
      $    811,205
Home Furnishings — 0.1%
Tempur Sealy International, Inc., 4.00%, 4/15/29(1) $       135 $    117,020
      $    117,020
Insurance — 0.1%
Alliant Holdings Intermediate, LLC/Alliant Holdings Co-Issuer, 6.75%, 10/15/27(1) $       100 $     94,143
      $     94,143
Leisure Goods/Activities/Movies — 0.1%
Viking Cruises, Ltd., 5.875%, 9/15/27(1) $       135 $    124,236
      $    124,236
Media — 0.3%
Audacy Capital Corp., 6.50%, 5/1/27(1) $       135 $      2,708
Diamond Sports Group, LLC/Diamond Sports Finance Co., 5.375%, 8/15/26(1)(7)           0(8)           3
iHeartCommunications, Inc.:       
6.375%, 5/1/26         102      85,953
8.375%, 5/1/27         185     123,791
Sirius XM Radio, Inc., 4.00%, 7/15/28(1)         135     117,442
      $    329,897
Oil and Gas — 0.1%
Permian Resources Operating, LLC, 5.375%, 1/15/26(1) $       135 $    128,748
      $    128,748
Security Principal
Amount
(000's omitted) 		Value
Pipelines — 0.1%
EQM Midstream Partners, L.P., 4.75%, 1/15/31(1) $       135 $    118,414
      $    118,414
Real Estate Investment Trusts (REITs) — 0.1%
HAT Holdings I, LLC/HAT Holdings II, LLC, 3.375%, 6/15/26(1) $       135 $    121,133
      $    121,133
Retail — 0.1%
Fertitta Entertainment, LLC/Fertitta Entertainment Finance Co., Inc., 6.75%, 1/15/30(1) $       135 $    115,022
      $    115,022
Technology — 0.1%
athenahealth Group, Inc., 6.50%, 2/15/30(1) $       135 $    113,756
      $    113,756
Utilities — 0.4%
NRG Energy, Inc., 3.625%, 2/15/31(1) $       500 $    390,783
      $    390,783
Wireless Telecommunication Services — 0.2%
Digicel International Finance, Ltd./Digicel International Holdings, Ltd., 8.75%, 5/25/24(1) $       275 $    252,312
      $    252,312
Total Corporate Bonds
(identified cost $7,503,891) 		    $  7,102,034
    
Senior Floating-Rate Loans — 130.3%(9)
Borrower/Description Principal
Amount*
(000's omitted) 		Value
Aerospace and Defense — 2.0%
Aernnova Aerospace S.A.U.:       
Term Loan, 6.483%, (3 mo. EURIBOR + 3.00%), 2/26/27 EUR       696 $    722,896
Term Loan, 6.892%, (6 mo. EURIBOR + 3.00%), 2/26/27 EUR       179     185,358
IAP Worldwide Services, Inc., Term Loan - Second Lien, 12.038%, (3 mo. USD LIBOR + 6.50%), 7/18/23(3)         202     161,180
WP CPP Holdings, LLC, Term Loan, 9.03%, (3 mo. USD LIBOR + 3.75%), 4/30/25       1,161   1,057,370
      $  2,126,804
 
19
See Notes to Financial Statements.
Eaton Vance
Senior Income Trust
June 30, 2023
Portfolio of Investments  — continued
Borrower/Description Principal
Amount*
(000's omitted) 		Value
Airlines — 1.2%
American Airlines, Inc., Term Loan, 10.00%, (3 mo. USD LIBOR + 4.75%), 4/20/28         925 $    947,299
Mileage Plus Holdings, LLC, Term Loan, 10.764%, (3 mo. USD LIBOR + 5.25%), 6/21/27         280     291,392
      $  1,238,691
Auto Components — 2.7%
Adient US, LLC, Term Loan, 8.467%, (SOFR + 3.25%), 4/10/28         322 $    321,864
Clarios Global, L.P., Term Loan, 8.853%, (SOFR + 3.75%), 5/6/30         625     623,438
DexKo Global, Inc.:       
Term Loan, 7.598%, (3 mo. EURIBOR + 4.00%), 10/4/28 EUR        22      22,180
Term Loan, 7.598%, (3 mo. EURIBOR + 4.00%), 10/4/28 EUR        70      71,684
Term Loan, 7.598%, (3 mo. EURIBOR + 3.75%), 10/4/28 EUR       134     137,846
Term Loan, 9.254%, (SOFR + 3.75%), 10/4/28         198     189,106
Term Loan, 11.742%, (SOFR + 6.50%), 10/4/28         200     192,642
Garrett LX I S.a.r.l., Term Loan, 8.557%, (3 mo. USD LIBOR + 3.25%), 4/30/28         344     331,625
Garrett Motion, Inc., Term Loan, 9.777%, (SOFR + 4.50%), 4/30/28         275     270,875
LTI Holdings, Inc., Term Loan, 9.967%, (1 mo. USD LIBOR + 4.75%), 7/24/26         270     261,906
Truck Hero, Inc., Term Loan, 8.967%, (SOFR + 3.75%), 1/31/28         496     466,731
      $  2,889,897
Automobiles — 0.7%
MajorDrive Holdings IV, LLC:       
Term Loan, 9.50%, (3 mo. USD LIBOR + 4.00%), 6/1/28         319 $    312,031
Term Loan, 10.927%, (SOFR + 5.50%), 6/1/29         420     412,343
      $    724,374
Beverages — 1.3%
Arterra Wines Canada, Inc., Term Loan, 9.004%, (3 mo. USD LIBOR + 3.50%), 11/24/27         488 $    474,486
City Brewing Company, LLC, Term Loan, 8.76%, (3 mo. USD LIBOR + 3.50%), 4/5/28         319     210,502
Triton Water Holdings, Inc., Term Loan, 8.753%, (SOFR + 3.25%), 3/31/28         735     713,135
      $  1,398,123
Borrower/Description Principal
Amount*
(000's omitted) 		Value
Biotechnology — 0.3%
Alkermes, Inc., Term Loan, 7.66%, (1 mo. USD LIBOR + 2.50%), 3/12/26         181 $    177,433
Alltech, Inc., Term Loan, 9.217%, (SOFR + 4.00%), 10/13/28         123     119,739
      $    297,172
Building Products — 2.0%
Cornerstone Building Brands, Inc., Term Loan, 8.497%, (SOFR + 3.25%), 4/12/28         907 $    872,078
LHS Borrower, LLC, Term Loan, 9.80%, (SOFR + 4.75%), 2/16/29         290     243,226
MI Windows and Doors, LLC, Term Loan, 8.703%, (SOFR + 3.50%), 12/18/27         537     533,832
Oscar AcquisitionCo, LLC, Term Loan, 9.842%, (SOFR + 4.50%), 4/29/29         223     218,497
Standard Industries, Inc., Term Loan, 7.692%, (SOFR + 2.50%), 9/22/28         281     281,617
      $  2,149,250
Capital Markets — 4.1%
Advisor Group, Inc., Term Loan, 9.693%, (1 mo. USD LIBOR + 4.50%), 7/31/26         496 $    497,105
AllSpring Buyer, LLC, Term Loan, 8.538%, (3 mo. USD LIBOR + 3.00%), 11/1/28         394     388,389
Aretec Group, Inc.:       
Term Loan, 9.453%, (SOFR + 4.25%), 10/1/25         744     744,795
Term Loan, 3/8/30(10)         200     199,875
Edelman Financial Center, LLC, Term Loan, 8.943%, (1 mo. USD LIBOR + 3.75%), 4/7/28         441     430,652
EIG Management Company, LLC, Term Loan, 8.953%, (SOFR + 3.75%), 2/22/25         118     118,141
Focus Financial Partners, LLC:       
Term Loan, 7.603%, (SOFR + 2.50%), 6/30/28         490     485,226
Term Loan, 6/30/28(10)         175     174,371
HighTower Holdings, LLC, Term Loan, 9.15%, (1 mo. USD LIBOR + 4.00%), 4/21/28         746     731,279
Hudson River Trading, LLC, Term Loan, 8.217%, (SOFR + 3.00%), 3/20/28         539     526,533
Mariner Wealth Advisors, LLC, Term Loan, 8.747%, (SOFR + 3.25%), 8/18/28         123     118,997
      $  4,415,363
Chemicals — 7.7%
Aruba Investments, Inc.:       
Term Loan, 7.418%, (1 mo. EURIBOR + 4.00%), 11/24/27 EUR       244 $    255,996
Term Loan, 9.203%, (SOFR + 4.00%), 11/24/27         342      332,319
 
20
See Notes to Financial Statements.
Eaton Vance
Senior Income Trust
June 30, 2023
Portfolio of Investments  — continued
Borrower/Description Principal
Amount*
(000's omitted) 		Value
Chemicals (continued)
Axalta Coating Systems U.S. Holdings, Inc., Term Loan, 12/20/29(10)         600 $    601,969
Charter NEX US, Inc., Term Loan, 8.967%, (SOFR + 3.75%), 12/1/27         219     217,707
Chemours Company (The), Term Loan, 5.42%, (1 mo. EURIBOR + 2.00%), 4/3/25 EUR       275     299,274
CPC Acquisition Corp., Term Loan, 9.254%, (SOFR + 3.75%), 12/29/27         326     249,397
Gemini HDPE, LLC, Term Loan, 8.307%, (3 mo. USD LIBOR + 3.00%), 12/31/27         340     339,926
Groupe Solmax, Inc., Term Loan, 9.989%, (SOFR + 4.75%), 5/29/28         441     417,572
INEOS Enterprises Holdings US Finco, LLC:       
Term Loan, 8.864%, (SOFR + 3.50%), 8/28/26          99      98,817
Term Loan, 6/23/30(10)         150     147,750
INEOS Finance PLC, Term Loan, 6.168%, (1 mo. EURIBOR + 2.75%), 11/8/28 EUR       175     185,152
INEOS Quattro Holdings UK, Ltd.:       
Term Loan, 7.418%, (1 mo. EURIBOR + 4.00%), 3/14/30 EUR        75      80,715
Term Loan, 8.953%, (SOFR + 3.75%), 3/14/30         125     124,505
INEOS Styrolution US Holding, LLC, Term Loan, 7.967%, (SOFR + 2.75%), 1/29/26         980     979,142
INEOS US Finance, LLC:       
Term Loan, 7.703%, (SOFR + 2.50%), 11/8/28         148     146,260
Term Loan, 8.703%, (SOFR + 3.50%), 2/18/30         225     223,935
Term Loan, 8.953%, (SOFR + 3.75%), 11/8/27         499     497,763
Kraton Corporation, Term Loan, 8.766%, (SOFR + 3.25%), 3/15/29         422     422,190
Lonza Group AG, Term Loan, 9.267%, (SOFR + 3.93%), 7/3/28         711     601,143
Momentive Performance Materials, Inc., Term Loan, 9.603%, (SOFR + 4.50%), 3/29/28         249     245,634
Olympus Water US Holding Corporation, Term Loan, 9.254%, (SOFR + 3.75%), 11/9/28         690     665,368
Orion Engineered Carbons GmbH, Term Loan, 7.688%, (3 mo. USD LIBOR + 2.15%), 9/24/28          98      97,145
Rohm Holding GmbH, Term Loan, 10.102%, (3 mo. USD LIBOR + 5.00%), 7/31/26         441     402,266
SCUR-Alpha 1503 GmbH, Term Loan, 10.603%, (SOFR + 5.50%), 3/28/30         150     142,985
Starfruit Finco B.V., Term Loan, 8.99%, (SOFR + 4.00%), 4/3/28         175     173,578
W.R. Grace & Co.-Conn., Term Loan, 9.313%, (3 mo. USD LIBOR + 3.75%), 9/22/28         296     294,207
      $  8,242,715
Borrower/Description Principal
Amount*
(000's omitted) 		Value
Commercial Services & Supplies — 5.4%
Allied Universal Holdco, LLC, Term Loan, 8.953%, (SOFR + 3.75%), 5/12/28         992 $    964,264
Belfor Holdings, Inc., Term Loan, 9.192%, (1 mo. USD LIBOR + 4.00%), 4/6/26         240     240,100
EnergySolutions, LLC, Term Loan, 9.288%, (3 mo. USD LIBOR + 3.75%), 5/9/25       1,591   1,566,565
Garda World Security Corporation, Term Loan, 9.427%, (SOFR + 4.25%), 10/30/26         495     492,909
GFL Environmental, Inc., Term Loan, 8.145%, (SOFR + 3.00%), 5/28/27          14      13,909
LABL, Inc., Term Loan, 10.203%, (SOFR + 5.10%), 10/29/28         172     171,046
Monitronics International, Inc., Term Loan, 13.00%, (SOFR + 7.50%), 6/30/28         261     253,473
PECF USS Intermediate Holding III Corporation, Term Loan, 9.523%, (3 mo. USD LIBOR + 4.25%), 12/15/28         443     360,664
Phoenix Services International, LLC, Term Loan, 11.102%, (SOFR + 6.00%), 6/30/28          47      44,347
SITEL Worldwide Corporation, Term Loan, 8.95%, (1 mo. USD LIBOR + 3.75%), 8/28/28         887     868,984
Tempo Acquisition, LLC, Term Loan, 8.103%, (SOFR + 3.00%), 8/31/28         496     496,842
TruGreen Limited Partnership, Term Loan, 9.203%, (SOFR + 4.00%), 11/2/27         293     269,831
      $  5,742,934
Communications Equipment — 0.1%
Digi International, Inc., Term Loan, 10.217%, (1 mo. USD LIBOR + 5.00%), 11/1/28          79 $     78,893
      $     78,893
Construction Materials — 0.9%
Quikrete Holdings, Inc., Term Loan, 8.217%, (1 mo. USD LIBOR + 3.00%), 3/18/29         988 $    989,352
      $    989,352
Consumer Staples Distribution & Retail — 0.3%
Cardenas Markets, Inc., Term Loan, 8/1/29(10)         125 $    123,959
Peer Holding III B.V., Term Loan, 9/29/28(10) EUR       150     162,179
      $    286,138
Containers & Packaging — 1.8%
Berlin Packaging, LLC, Term Loan, 8.947%, (USD LIBOR + 3.75%), 3/11/28(11)         519 $    511,912
 
21
See Notes to Financial Statements.
Eaton Vance
Senior Income Trust
June 30, 2023
Portfolio of Investments  — continued
Borrower/Description Principal
Amount*
(000's omitted) 		Value
Containers & Packaging (continued)
Clydesdale Acquisition Holdings, Inc., Term Loan, 9.378%, (SOFR + 4.18%), 4/13/29         645 $    635,814
Pregis TopCo Corporation, Term Loan, 8.967%, (SOFR + 3.75%), 7/31/26         290     288,535
Pretium PKG Holdings, Inc.:       
Term Loan, 9.291%, (3 mo. USD LIBOR + 4.00%), 10/2/28         148     110,886
Term Loan - Second Lien, 12.116%, (3 mo. USD LIBOR + 6.75%), 10/1/29         100      54,000
Trident TPI Holdings, Inc., Term Loan, 9.742%, (SOFR + 4.50%), 9/15/28         356     352,066
      $  1,953,213
Distributors — 0.7%
Autokiniton US Holdings, Inc., Term Loan, 9.717%, (SOFR + 4.50%), 4/6/28         735 $    731,968
Phillips Feed Service, Inc., Term Loan, 12.15%, (1 mo. USD LIBOR + 7.00%), 11/13/24(3)          49      39,217
      $    771,185
Diversified Consumer Services — 0.7%
Ascend Learning, LLC, Term Loan, 8.703%, (SOFR + 3.50%), 12/11/28         172 $    163,002
KUEHG Corp., Term Loan, 10.242%, (SOFR + 5.00%), 6/12/30         375     371,953
Sotheby's, Term Loan, 9.76%, (3 mo. USD LIBOR + 4.50%), 1/15/27         203     198,387
      $    733,342
Diversified Financial Services — 0.9%
Concorde Midco, Ltd., Term Loan, 7.052%, (3 mo. EURIBOR + 4.00%), 3/1/28 EUR       250 $    265,980
Sandy BidCo B.V., Term Loan, 7.588%, (3 mo. EURIBOR + 4.00%), 8/17/29 EUR       275     295,570
Zephyr Bidco Limited, Term Loan, 9.211%, (SONIA + 4.75%), 7/23/25 GBP       350     432,924
      $    994,474
Diversified Telecommunication Services — 3.1%
Altice France S.A., Term Loan, 10.486%, (SOFR + 5.50%), 8/15/28         669 $    598,284
GEE Holdings 2, LLC:       
Term Loan, 13.54%, (3 mo. USD LIBOR + 8.00%), 3/24/25         186     182,611
Term Loan - Second Lien, 13.79%, (3 mo. USD LIBOR + 8.25%), 3/23/26         411      251,811
Borrower/Description Principal
Amount*
(000's omitted) 		Value
Diversified Telecommunication Services (continued)
Virgin Media Bristol, LLC, Term Loan, 8.443%, (1 mo. USD LIBOR + 3.25%), 1/31/29       1,825 $  1,819,981
Ziggo B.V., Term Loan, 6.102%, (6 mo. EURIBOR + 3.00%), 1/31/29 EUR       500     512,767
      $  3,365,454
Electrical Equipment — 0.3%
AZZ, Inc., Term Loan, 9.407%, (SOFR + 4.25%), 5/13/29         299 $    299,511
      $    299,511
Electronic Equipment, Instruments & Components — 2.2%
Chamberlain Group, Inc., Term Loan, 8.453%, (SOFR + 3.25%), 11/3/28         394 $    385,709
Creation Technologies, Inc., Term Loan, 10.723%, (3 mo. USD LIBOR + 5.50%), 10/5/28         397     366,990
Ingram Micro, Inc., Term Loan, 6/30/28(10)         600     599,000
Mirion Technologies, Inc., Term Loan, 8.254%, (1 mo. USD LIBOR + 2.75%), 10/20/28         146     145,944
Verifone Systems, Inc., Term Loan, 9.476%, (3 mo. USD LIBOR + 4.00%), 8/20/25         497     470,972
Verisure Holding AB, Term Loan, 6.804%, (3 mo. EURIBOR + 3.25%), 3/27/28 EUR       375     396,445
      $  2,365,060
Energy Equipment & Services — 0.0%(6)
Ameriforge Group, Inc., Term Loan, 16.467%, (1 mo. USD LIBOR + 13.00%), 2/1/26(3)(12)          25 $     22,106
      $     22,106
Engineering & Construction — 1.1%
Aegion Corporation, Term Loan, 9.967%, (SOFR + 4.75%), 5/17/28         298 $    290,459
American Residential Services, LLC, Term Loan, 9.004%, (SOFR + 3.50%), 10/15/27         268     264,774
Northstar Group Services, Inc., Term Loan, 10.717%, (SOFR + 5.50%), 11/12/26         586     582,656
      $  1,137,889
Entertainment — 3.2%
AMC Entertainment Holdings, Inc., Term Loan, 8.218%, (1 mo. USD LIBOR + 3.00%), 4/22/26         389 $    305,022
Crown Finance US, Inc.:       
DIP Loan, 15.248%, (SOFR + 10.00%), 9/7/23(11)         761     770,409
Term Loan, 0.00%, 9/30/26(7)         682     211,571
EP Purchaser, LLC, Term Loan, 9.004%, (SOFR + 3.50%), 11/6/28          99       97,145
 
22
See Notes to Financial Statements.
Eaton Vance
Senior Income Trust
June 30, 2023
Portfolio of Investments  — continued
Borrower/Description Principal
Amount*
(000's omitted) 		Value
Entertainment (continued)
Renaissance Holding Corp.:       
Term Loan, 9.992%, (SOFR + 4.75%), 4/5/30         275 $    272,078
Term Loan - Second Lien, 12.193%, (1 mo. USD LIBOR + 7.00%), 5/29/26       1,075   1,061,786
Vue International Bidco PLC:       
Term Loan, 11.086%, (6 mo. EURIBOR + 8.00%), 6/30/27 EUR       149     148,762
Term Loan, 11.359%, (6 mo. EURIBOR + 8.00%), 4.859% cash, 6.50% PIK, 12/31/27 EUR     1,008     579,213
      $  3,445,986
Food Products — 1.8%
8th Avenue Food & Provisions, Inc., Term Loan, 9.967%, (SOFR + 4.75%), 10/1/25         147 $    138,348
CHG PPC Parent, LLC, Term Loan, 8.217%, (SOFR + 3.00%), 12/8/28         123     122,662
Del Monte Foods, Inc., Term Loan, 5/16/29(10)         300     291,750
Nomad Foods Europe Midco Limited, Term Loan, 11/12/29(10)         600     600,600
Shearer's Foods, Inc., Term Loan, 8.717%, (SOFR + 3.50%), 9/23/27         195     192,220
Sovos Brands Intermediate, Inc., Term Loan, 8.773%, (3 mo. USD LIBOR + 3.50%), 6/8/28         269     267,955
United Petfood Group B.V., Term Loan, 6.038%, (3 mo. EURIBOR + 2.75%), 4/23/28 EUR       350     373,486
      $  1,987,021
Gas Utilities — 0.9%
CQP Holdco, L.P., Term Loan, 8.693%, (3 mo. USD LIBOR + 3.75%), 6/5/28       1,006 $  1,005,587
      $  1,005,587
Health Care Equipment & Supplies — 2.6%
Artivion, Inc., Term Loan, 9.004%, (SOFR + 3.50%), 6/1/27         213 $    201,728
Bayou Intermediate II, LLC, Term Loan, 9.689%, (SOFR + 4.50%), 8/2/28         394     370,360
Gloves Buyer, Inc., Term Loan, 9.217%, (SOFR + 4.00%), 12/29/27         688     655,407
Journey Personal Care Corp., Term Loan, 9.981%, (6 mo. USD LIBOR + 4.25%), 3/1/28         737     630,281
Medline Borrower, L.P., Term Loan, 8.467%, (SOFR + 3.25%), 10/23/28         988     977,448
      $  2,835,224
Borrower/Description Principal
Amount*
(000's omitted) 		Value
Health Care Providers & Services — 8.7%
AEA International Holdings (Lux) S.a.r.l., Term Loan, 9.253%, (SOFR + 3.75%), 9/7/28         569 $    568,648
Biogroup-LCD, Term Loan, 6.28%, (3 mo. EURIBOR + 3.00%), 2/9/28 EUR       125     127,832
BW NHHC Holdco, Inc., Term Loan - Second Lien, 14.239%, (SOFR + 9.00%), 1/15/26       1,044     793,287
Cano Health, LLC, Term Loan, 9.203%, (SOFR + 4.00%), 11/23/27         983     829,506
CCRR Parent, Inc., Term Loan, 8.967%, (SOFR + 3.75%), 3/6/28         543     523,967
Cerba Healthcare S.A.S.:       
Term Loan, 7.118%, (1 mo. EURIBOR + 3.70%), 6/30/28 EUR       125     127,406
Term Loan, 7.418%, (1 mo. EURIBOR + 4.00%), 2/15/29 EUR       150     154,655
CHG Healthcare Services, Inc., Term Loan, 8.443%, (1 mo. USD LIBOR + 3.25%), 9/29/28         569     566,457
CNT Holdings I Corp., Term Loan, 8.459%, (SOFR + 3.50%), 11/8/27         686     684,112
Covis Finco S.a.r.l., Term Loan, 11.55%, (SOFR + 6.50%), 2/18/27         183     137,041
Electron BidCo, Inc., Term Loan, 8.217%, (SOFR + 3.00%), 11/1/28         198     196,957
Envision Healthcare Corporation:       
Term Loan, 13.267%, (SOFR + 7.88%), 3/31/27         133     145,927
Term Loan - Second Lien, 9.492%, (SOFR + 4.25%), 3/31/27         938     219,243
IVC Acquisition, Ltd., Term Loan, 7.687%, (6 mo. EURIBOR + 4.00%), 2/13/26 EUR       400     428,062
LSCS Holdings, Inc., Term Loan, 9.693%, (1 mo. USD LIBOR + 4.50%), 12/16/28         172     168,712
Medical Solutions Holdings, Inc., Term Loan, 8.614%, (SOFR + 3.25%), 11/1/28         644     608,551
Option Care Health, Inc., Term Loan, 7.943%, (SOFR + 2.75%), 10/27/28          99      98,463
Pacific Dental Services, LLC, Term Loan, 8.704%, (SOFR + 3.50%), 5/5/28         270     268,742
Phoenix Guarantor, Inc., Term Loan, 8.353%, (SOFR + 3.25%), 3/5/26         735     726,556
Radiology Partners, Inc., Term Loan, 9.467%, (SOFR + 4.25%), 7/9/25         150     113,250
Sound Inpatient Physicians, Term Loan, 8.273%, (3 mo. USD LIBOR + 3.00%), 6/27/25         214     126,112
Surgery Center Holdings, Inc., Term Loan, 8.896%, (1 mo. USD LIBOR + 3.75%), 8/31/26         645     645,290
Synlab Bondco PLC, Term Loan, 5.193%, (6 mo. EURIBOR + 2.50%), 7/1/27 EUR       150      161,711
 
23
See Notes to Financial Statements.
Eaton Vance
Senior Income Trust
June 30, 2023
Portfolio of Investments  — continued
Borrower/Description Principal
Amount*
(000's omitted) 		Value
Health Care Providers & Services (continued)
TTF Holdings, LLC, Term Loan, 3/31/28(10)         600 $    600,375
U.S. Anesthesia Partners, Inc., Term Loan, 9.42%, (1 mo. USD LIBOR + 4.25%), 10/1/28         270     254,507
      $  9,275,369
Health Care Technology — 3.5%
Certara, L.P., Term Loan, 8.976%, (1 mo. USD LIBOR + 3.50%), 8/15/26         471 $    470,538
eResearchTechnology, Inc., Term Loan, 9.717%, (SOFR + 4.50%), 2/4/27         147     141,285
Imprivata, Inc., Term Loan, 8.967%, (SOFR + 3.75%), 12/1/27         982     964,606
MedAssets Software Intermediate Holdings, Inc., Term Loan, 9.193%, (1 mo. USD LIBOR + 4.00%), 12/18/28         272     233,091
PointClickCare Technologies, Inc., Term Loan, 8.765%, (SOFR + 3.00%), 12/29/27         293     292,334
Project Ruby Ultimate Parent Corp., Term Loan, 8.467%, (SOFR + 3.25%), 3/10/28         538     525,480
Symplr Software, Inc., Term Loan, 9.645%, (SOFR + 4.50%), 12/22/27         440     397,687
Verscend Holding Corp., Term Loan, 9.217%, (1 mo. USD LIBOR + 4.00%), 8/27/25         697     697,345
      $  3,722,366
Hotels, Restaurants & Leisure — 4.3%
Carnival Corporation:       
Term Loan, 8.217%, (SOFR + 3.00%), 6/30/25         606 $    605,966
Term Loan, 8.467%, (SOFR + 3.25%), 10/18/28       1,135   1,127,184
ClubCorp Holdings, Inc., Term Loan, 8.288%, (3 mo. USD LIBOR + 2.75%), 9/18/24         392     376,161
Dave & Buster's, Inc., Term Loan, 9.00%, (SOFR + 3.75%), 6/29/29         124     123,338
Fertitta Entertainment, LLC, Term Loan, 1/27/29(10)         600     593,719
Great Canadian Gaming Corporation, Term Loan, 9.52%, (3 mo. USD LIBOR + 4.00%), 11/1/26         446     445,036
Oravel Stays Singapore Pte., Ltd., Term Loan, 13.79%, (3 mo. USD LIBOR + 8.25%), 6/23/26         270     230,422
Playa Resorts Holding B.V., Term Loan, 9.341%, (SOFR + 4.25%), 1/5/29         647     646,462
SeaWorld Parks & Entertainment, Inc., Term Loan, 8.25%, (1 mo. USD LIBOR + 3.00%), 8/25/28         221     221,062
Wyndham Hotels & Resorts, Inc., Term Loan, 7.453%, (SOFR + 2.25%), 5/24/30         225     225,309
      $  4,594,659
Borrower/Description Principal
Amount*
(000's omitted) 		Value
Household Durables — 1.6%
Libbey Glass, Inc., Term Loan, 13.779%, (SOFR + 8.50%), 9.029% cash, 4.75% PIK, 11/22/27         291 $    274,159
Serta Simmons Bedding, LLC, Term Loan, 12.746%, (SOFR + 7.50%), 6/30/28         700     707,266
Solis IV B.V., Term Loan, 7.422%, (3 mo. EURIBOR + 4.00%), 2/26/29 EUR       750     764,181
      $  1,745,606
Household Products — 0.4%
Kronos Acquisition Holdings, Inc.:       
Term Loan, 11.375%, (SOFR + 6.00%), 12/22/26          99 $     96,776
Term Loan, 12/22/26(10)         400     391,200
      $    487,976
Insurance — 1.4%
AmWINS Group, Inc., Term Loan, 7.834%, (SOFR + 2.75%), 2/19/28         199 $    198,731
AssuredPartners, Inc., Term Loan, 8.717%, (SOFR + 3.50%), 2/12/27         688     683,063
NFP Corp., Term Loan, 8.467%, (SOFR + 3.25%), 2/15/27         588     576,642
      $  1,458,436
Interactive Media & Services — 2.0%
Adevinta ASA:       
Term Loan, 6.348%, (3 mo. EURIBOR + 2.75%), 6/26/28 EUR       406 $    441,587
Term Loan, 8.288%, (3 mo. USD LIBOR + 2.75%), 6/26/28         110     110,695
Arches Buyer, Inc., Term Loan, 8.453%, (SOFR + 3.25%), 12/6/27         796     767,066
Buzz Finco, LLC:       
Term Loan, 7.953%, (SOFR + 2.75%), 1/29/27         266     266,063
Term Loan, 8.453%, (SOFR + 3.25%), 1/29/27          27      26,773
Getty Images, Inc., Term Loan, 9.838%, (SOFR + 4.50%), 2/19/26(11)         509     510,180
      $  2,122,364
IT Services — 5.4%
Asurion, LLC:       
Term Loan, 8.788%, (3 mo. USD LIBOR + 3.25%), 12/23/26         992 $    956,807
Term Loan - Second Lien, 10.505%, (SOFR + 5.25%), 1/31/28         750     637,366
Term Loan - Second Lien, 10.505%, (SOFR + 5.25%), 1/20/29         325      274,381
 
24
See Notes to Financial Statements.
Eaton Vance
Senior Income Trust
June 30, 2023
Portfolio of Investments  — continued
Borrower/Description Principal
Amount*
(000's omitted) 		Value
IT Services (continued)
Endure Digital, Inc., Term Loan, 8.792%, (3 mo. USD LIBOR + 3.50%), 2/10/28         992 $    921,076
Gainwell Acquisition Corp., Term Loan, 9.342%, (SOFR + 4.00%), 10/1/27         744     733,111
Go Daddy Operating Company, LLC, Term Loan, 11/9/29(10)         600     601,806
Indy US Bidco, LLC, Term Loan, 7.168%, (1 mo. EURIBOR + 3.75%), 3/6/28 EUR       196     189,747
NAB Holdings, LLC, Term Loan, 8.392%, (SOFR + 3.00%), 11/23/28         594     589,901
Rackspace Technology Global, Inc., Term Loan, 7.996%, (SOFR + 2.75%), 2/15/28         737     342,432
Skopima Merger Sub, Inc., Term Loan, 9.193%, (1 mo. USD LIBOR + 4.00%), 5/12/28         516     502,641
      $  5,749,268
Leisure Products — 0.8%
Amer Sports Oyj, Term Loan, 7.648%, (6 mo. EURIBOR + 4.00%), 3/30/26 EUR       800 $    858,463
      $    858,463
Life Sciences Tools & Services — 1.3%
Cambrex Corporation, Term Loan, 8.605%, (SOFR + 3.50%), 12/4/26         145 $    143,628
Curia Global, Inc., Term Loan, 8.895%, (SOFR + 3.75%), 8/30/26         673     582,950
LGC Group Holdings, Ltd., Term Loan, 6.168%, (1 mo. EURIBOR + 2.75%), 4/21/27 EUR       225     233,919
Loire Finco Luxembourg S.a.r.l., Term Loan, 8.103%, (SOFR + 3.00%), 4/21/27         146     141,376
Sotera Health Holdings, LLC, Term Loan, 8.023%, (3 mo. USD LIBOR + 2.75%), 12/11/26         300     297,328
      $  1,399,201
Machinery — 7.0%
AI Aqua Merger Sub, Inc., Term Loan, 8.896%, (SOFR + 3.75%), 7/31/28         594 $    582,862
Albion Financing 3 S.a.r.l., Term Loan, 10.523%, (3 mo. USD LIBOR + 5.25%), 8/17/26         394     387,105
Alliance Laundry Systems, LLC, Term Loan, 8.559%, (SOFR + 3.50%), 10/8/27         530     529,653
American Trailer World Corp., Term Loan, 8.953%, (SOFR + 3.75%), 3/3/28         255     230,904
Apex Tool Group, LLC, Term Loan, 10.466%, (SOFR + 5.25%), 2/8/29         347     323,487
Conair Holdings, LLC, Term Loan, 9.288%, (3 mo. USD LIBOR + 3.75%), 5/17/28         590      557,446
Borrower/Description Principal
Amount*
(000's omitted) 		Value
Machinery (continued)
Delachaux Group S.A., Term Loan, 9.773%, (3 mo. USD LIBOR + 4.50%), 4/16/26         186 $    182,841
EMRLD Borrower L.P., Term Loan, 8.264%, (SOFR + 3.00%), 5/31/30         325     325,406
Engineered Machinery Holdings, Inc., Term Loan, 9.038%, (3 mo. USD LIBOR + 3.50%), 5/19/28         883     868,092
Filtration Group Corporation, Term Loan, 8.717%, (SOFR + 3.50%), 10/21/28         172     171,551
Gates Global, LLC, Term Loan, 7.703%, (SOFR + 2.50%), 3/31/27         759     756,431
Icebox Holdco III, Inc., Term Loan, 9.092%, (SOFR + 3.75%), 12/22/28         198     192,285
Pro Mach Group, Inc., Term Loan, 8/31/28(10)         300     299,625
Roper Industrial Products Investment Company, LLC, Term Loan, 9.742%, (SOFR + 4.50%), 11/22/29         424     422,745
SPX Flow, Inc., Term Loan, 9.703%, (SOFR + 4.50%), 4/5/29         523     515,441
Titan Acquisition Limited, Term Loan, 8.731%, (3 mo. USD LIBOR + 3.00%), 3/28/25         496     484,912
TK Elevator Topco GmbH, Term Loan, 6.567%, (6 mo. EURIBOR + 3.63%), 7/30/27 EUR       150     160,134
Vertical US Newco, Inc., Term Loan, 8.602%, (6 mo. USD LIBOR + 3.50%), 7/30/27         195     193,582
Zephyr German BidCo GmbH, Term Loan, 6.895%, (3 mo. EURIBOR + 3.85%), 3/10/28 EUR       300     307,637
      $  7,492,139
Media — 1.6%
Gray Television, Inc.:       
Term Loan, 7.775%, (SOFR + 2.50%), 1/2/26         276 $    271,819
Term Loan, 8.275%, (SOFR + 3.00%), 12/1/28         246     241,448
Hubbard Radio, LLC, Term Loan, 9.45%, (1 mo. USD LIBOR + 4.25%), 3/28/25         208     185,459
Nexstar Broadcasting, Inc., Term Loan, 7.717%, (SOFR + 2.50%), 9/18/26         127     127,302
Sinclair Television Group, Inc., Term Loan, 7.717%, (SOFR + 2.50%), 9/30/26         289     258,070
Univision Communications, Inc., Term Loan, 8.443%, (1 mo. USD LIBOR + 3.25%), 3/15/26         588     583,884
      $  1,667,982
Metals/Mining — 0.5%
Dynacast International, LLC, Term Loan, 14.325%, (SOFR + 9.00%), 10/22/25         161 $    121,058
 
25
See Notes to Financial Statements.
Eaton Vance
Senior Income Trust
June 30, 2023
Portfolio of Investments  — continued
Borrower/Description Principal
Amount*
(000's omitted) 		Value
Metals/Mining (continued)
PMHC II, Inc., Term Loan, 9.304%, (SOFR + 4.25%), 4/23/29         398 $    351,944
WireCo WorldGroup, Inc., Term Loan, 9.50%, (1 mo. USD LIBOR + 4.25%), 11/13/28         116     116,275
      $    589,277
Oil, Gas & Consumable Fuels — 1.5%
Freeport LNG Investments, LLLP, Term Loan, 8.75%, (3 mo. USD LIBOR + 3.50%), 12/21/28         172 $    168,556
Matador Bidco S.a.r.l., Term Loan, 9.703%, (SOFR + 4.50%), 10/15/26         670     668,330
Oryx Midstream Services Permian Basin, LLC, Term Loan, 8.539%, (SOFR + 3.25%), 10/5/28         245     245,119
Oxbow Carbon, LLC, Term Loan, 9.272%, (SOFR + 4.00%), 5/10/30(11)         150     147,750
QuarterNorth Energy Holding, Inc., Term Loan - Second Lien, 13.193%, (1 mo. USD LIBOR + 8.00%), 8/27/26         378     377,181
      $  1,606,936
Personal Products — 0.8%
Olaplex, Inc., Term Loan, 8.703%, (SOFR + 3.50%), 2/23/29         298 $    280,953
Sunshine Luxembourg VII S.a.r.l., Term Loan, 9.092%, (SOFR + 3.75%), 10/1/26         538     535,534
      $    816,487
Pharmaceuticals — 2.1%
Akorn, Inc., Term Loan, 0.00%, 10/1/25(7)         151 $    158,948
Bausch Health Companies, Inc., Term Loan, 10.426%, (SOFR + 5.25%), 2/1/27         444     336,487
Jazz Financing Lux S.a.r.l., Term Loan, 8.693%, (1 mo. USD LIBOR + 3.50%), 5/5/28         662     662,471
Mallinckrodt International Finance S.A.:       
Term Loan, 10.396%, (1 mo. USD LIBOR + 5.25%), 9/30/27         537     406,828
Term Loan, 10.646%, (1 mo. USD LIBOR + 5.50%), 9/30/27         876     662,851
      $  2,227,585
Professional Services — 2.4%
AlixPartners, LLP, Term Loan, 6.554%, (3 mo. EURIBOR + 3.00%), 2/4/28 EUR       244 $    261,829
Apleona Holding GmbH, Term Loan, 6.242%, (3 mo. EURIBOR + 3.00%), 4/28/28 EUR       375     398,203
Camelot U.S. Acquisition, LLC, Term Loan, 8.217%, (SOFR + 3.00%), 10/30/26         453      453,157
Borrower/Description Principal
Amount*
(000's omitted) 		Value
Professional Services (continued)
CoreLogic, Inc., Term Loan, 8.75%, (1 mo. USD LIBOR + 3.50%), 6/2/28         496 $    449,279
Employbridge Holding Company, Term Loan, 9.928%, (3 mo. USD LIBOR + 4.75%), 7/19/28         591     478,110
Neptune Bidco US, Inc., Term Loan, 10.004%, (SOFR + 5.00%), 4/11/29         600     530,125
      $  2,570,703
Road & Rail — 1.1%
First Student Bidco, Inc.:       
Term Loan, 8.529%, (3 mo. USD LIBOR + 3.00%), 7/21/28          81 $     78,931
Term Loan, 8.529%, (3 mo. USD LIBOR + 3.00%), 7/21/28         217     210,580
Grab Holdings, Inc., Term Loan, 9.70%, (1 mo. USD LIBOR + 4.50%), 1/29/26         512     512,000
Hertz Corporation (The):       
Term Loan, 6/30/28(10)         336     335,915
Term Loan, 6/30/28(10)          64      64,435
      $  1,201,861
Semiconductors & Semiconductor Equipment — 1.3%
Altar Bidco, Inc.:       
Term Loan, 8.142%, (SOFR + 3.10%), 2/1/29(11)         620 $    612,748
Term Loan - Second Lien, 10.512%, (SOFR + 5.60%), 2/1/30         125     111,836
Bright Bidco B.V., Term Loan, 13.676%, (SOFR + 9.00%), 10/31/27         191     102,421
Entegris, Inc., Term Loan, 7.952%, (SOFR + 2.75%), 7/6/29(11)         572     573,017
      $  1,400,022
Software — 24.1%
Applied Systems, Inc., Term Loan, 9.742%, (SOFR + 4.50%), 9/18/26         200 $    199,999
AppLovin Corporation, Term Loan, 8.453%, (SOFR + 3.35%), 8/15/25         562     562,690
Aptean, Inc., Term Loan, 9.453%, (SOFR + 4.25%), 4/23/26         496     488,050
AQA Acquisition Holding, Inc., Term Loan, 9.443%, (1 mo. USD LIBOR + 4.25%), 3/3/28         417     410,773
Astra Acquisition Corp.:       
Term Loan, 10.443%, (1 mo. USD LIBOR + 5.25%), 10/25/28         267     187,289
Term Loan - Second Lien, 14.092%, (SOFR + 8.88%), 10/25/29         425      232,278
 
26
See Notes to Financial Statements.
Eaton Vance
Senior Income Trust
June 30, 2023
Portfolio of Investments  — continued
Borrower/Description Principal
Amount*
(000's omitted) 		Value
Software (continued)
Banff Merger Sub, Inc.:       
Term Loan, 7.418%, (1 mo. EURIBOR + 4.00%), 10/2/25 EUR       120 $    130,136
Term Loan, 8.967%, (SOFR + 3.75%), 10/2/25       1,465   1,455,270
Term Loan - Second Lien, 10.717%, (SOFR + 5.50%), 2/27/26         225     219,937
CDK Global, Inc., Term Loan, 9.492%, (SOFR + 4.25%), 7/6/29         572     571,149
CentralSquare Technologies, LLC, Term Loan, 9.142%, (3 mo. USD LIBOR + 3.75%), 8/29/25       1,539   1,443,609
Cloud Software Group, Inc., Term Loan, 3/30/29(10)         400     375,125
Cloudera, Inc.:       
Term Loan, 8.953%, (SOFR + 3.75%), 10/8/28         691     676,561
Term Loan - Second Lien, 11.084%, (SOFR + 6.00%), 10/8/29         200     182,000
Cornerstone OnDemand, Inc., Term Loan, 9.254%, (SOFR + 3.75%), 10/16/28         346     320,999
Delta TopCo, Inc., Term Loan - Second Lien, 12.569%, (SOFR + 7.25%), 12/1/28       1,000     908,750
E2open, LLC, Term Loan, 8.764%, (USD LIBOR + 3.50%), 2/4/28(11)         417     414,686
ECI Macola Max Holding, LLC, Term Loan, 9.254%, (SOFR + 3.75%), 11/9/27         585     581,709
Epicor Software Corporation:       
Term Loan, 8.467%, (SOFR + 3.25%), 7/30/27         496     490,764
Term Loan - Second Lien, 12.953%, (SOFR + 7.75%), 7/31/28         375     376,641
Finastra USA, Inc.:       
Term Loan, 9.205%, (USD LIBOR + 3.50%), 6/13/24(11)         992     955,031
Term Loan - Second Lien, 12.788%, (6 mo. USD LIBOR + 7.25%), 6/13/25         500     454,336
Fiserv Investment Solutions, Inc., Term Loan, 2/18/27(10)         300     292,500
Greeneden U.S. Holdings II, LLC, Term Loan, 9.193%, (SOFR + 4.00%), 12/1/27         710     709,185
Hyland Software, Inc., Term Loan - Second Lien, 11.467%, (1 mo. USD LIBOR + 6.25%), 7/7/25       1,787   1,721,424
Imperva, Inc., Term Loan, 9.337%, (3 mo. USD LIBOR + 4.00%), 1/12/26         684     622,025
Ivanti Software, Inc., Term Loan, 9.42%, (1 mo. USD LIBOR + 4.25%), 12/1/27         210     178,549
Magenta Buyer, LLC:       
Term Loan, 10.03%, (3 mo. USD LIBOR + 4.75%), 7/27/28         622     470,081
Term Loan - Second Lien, 13.53%, (3 mo. USD LIBOR + 8.25%), 7/27/29         275     181,500
Marcel LUX IV S.a.r.l., Term Loan, 9.186%, (SOFR + 4.00%), 12/31/27          50       50,181
Borrower/Description Principal
Amount*
(000's omitted) 		Value
Software (continued)
McAfee, LLC, Term Loan, 9.01%, (SOFR + 3.75%), 3/1/29         693 $    663,795
Mediaocean, LLC, Term Loan, 8.703%, (SOFR + 3.50%), 12/15/28         148     140,780
Open Text Corporation, Term Loan, 8.703%, (SOFR + 3.50%), 1/31/30         672     673,784
Panther Commercial Holdings, L.P., Term Loan, 9.443%, (1 mo. USD LIBOR + 4.25%), 1/7/28         392     384,831
Proofpoint, Inc., Term Loan, 8.467%, (SOFR + 3.25%), 8/31/28         985     965,163
Quartz Acquireco, LLC, Term Loan, 6/28/30(10)         225     225,281
Quest Software US Holdings, Inc., Term Loan, 2/1/29(10)         400     312,700
RealPage, Inc., Term Loan, 8.217%, (SOFR + 3.00%), 4/24/28       1,670   1,635,056
Redstone Holdco 2, L.P., Term Loan, 10.005%, (3 mo. USD LIBOR + 4.75%), 4/27/28         688     574,414
Skillsoft Corporation, Term Loan, 7/14/28(10)         300     264,375
SolarWinds Holdings, Inc., Term Loan, 8.853%, (SOFR + 3.75%), 2/5/27         449     449,520
Sophia, L.P., Term Loan, 9.038%, (3 mo. USD LIBOR + 3.50%), 10/7/27       1,324   1,311,999
Ultimate Software Group, Inc. (The), Term Loan, 8.271%, (SOFR + 3.25%), 5/4/26       1,066   1,047,295
Veritas US, Inc.:       
Term Loan, 8.348%, (3 mo. EURIBOR + 4.75%), 9/1/25 EUR       146     131,281
Term Loan, 10.193%, (1 mo. USD LIBOR + 5.00%), 9/1/25         546     447,735
Vision Solutions, Inc., Term Loan, 9.505%, (3 mo. USD LIBOR + 4.25%), 4/24/28         737     700,860
      $ 25,792,096
Specialty Retail — 4.8%
Boels Topholding B.V., Term Loan, 6.57%, (1 mo. EURIBOR + 3.25%), 2/6/27 EUR       275 $    297,767
Great Outdoors Group, LLC, Term Loan, 8.943%, (1 mo. USD LIBOR + 3.75%), 3/6/28       1,268   1,259,748
Harbor Freight Tools USA, Inc., Term Loan, 7.967%, (SOFR + 2.75%), 10/19/27         982     970,702
Les Schwab Tire Centers, Term Loan, 8.443%, (1 mo. USD LIBOR + 3.25%), 11/2/27         744     741,173
LIDS Holdings, Inc., Term Loan, 10.868%, (SOFR + 5.50%), 12/14/26         102      95,469
Mattress Firm, Inc., Term Loan, 9.95%, (6 mo. USD LIBOR + 4.25%), 9/25/28         785     771,433
PetSmart, Inc., Term Loan, 8.953%, (SOFR + 3.75%), 2/11/28         983     983,319
      $  5,119,611
 
27
See Notes to Financial Statements.
Eaton Vance
Senior Income Trust
June 30, 2023
Portfolio of Investments  — continued
Borrower/Description Principal
Amount*
(000's omitted) 		Value
Trading Companies & Distributors — 4.7%
DXP Enterprises, Inc., Term Loan, 10.444%, (SOFR + 5.25%), 12/23/27         318 $    319,967
Electro Rent Corporation, Term Loan, 10.83%, (SOFR + 5.50%), 11/1/24       1,466   1,405,471
Park River Holdings, Inc., Term Loan, 8.522%, (6 mo. USD LIBOR + 3.25%), 12/28/27         318     306,353
Patagonia Bidco Limited, Term Loan, 9.427%, (SONIA + 5.25%), 11/1/28 GBP       375     394,891
Spin Holdco, Inc., Term Loan, 9.23%, (3 mo. USD LIBOR + 4.00%), 3/4/28       1,258   1,073,440
SRS Distribution, Inc., Term Loan, 8.693%, (1 mo. USD LIBOR + 3.50%), 6/2/28         746     731,745
White Cap Buyer, LLC, Term Loan, 8.853%, (SOFR + 3.75%), 10/19/27         497     494,113
Windsor Holdings III, LLC, Term Loan, 6/21/30(10)         300     295,687
      $  5,021,667
Transportation Infrastructure — 0.6%
Brown Group Holding, LLC, Term Loan, 7.584%, (SOFR + 2.50%), 6/7/28         636 $    627,838
      $    627,838
Wireless Telecommunication Services — 0.4%
CCI Buyer, Inc., Term Loan, 9.242%, (SOFR + 4.00%), 12/17/27         496 $    488,337
      $    488,337
Total Senior Floating-Rate Loans
(identified cost $144,995,339) 		    $139,532,007
    
Warrants — 0.0%
Security Shares Value
Leisure Goods/Activities/Movies — 0.0%
Cineworld Group PLC, Exp. 11/23/25(4)(5)     102,872 $          0
      $          0
Retailers (Except Food and Drug) — 0.0%
David’s Bridal, LLC, Exp. 12/31/28(3)(4)(5)       2,169 $          0
      $          0
Total Warrants
(identified cost $0) 		    $          0
    
Miscellaneous — 0.0%
Security Shares Value
Cable and Satellite Television — 0.0%
ACC Claims Holdings, LLC(3)(4)     200,340 $          0
Total Miscellaneous
(identified cost $0) 		    $          0
    
Short-Term Investments — 2.9%
Security Shares Value
Morgan Stanley Institutional Liquidity Funds - Government Portfolio, Institutional Class, 5.03%(13)   3,163,645 $  3,163,645
Total Short-Term Investments
(identified cost $3,163,645) 		    $  3,163,645
Total Investments — 153.9%
(identified cost $174,246,847) 		    $164,843,479
Less Unfunded Loan Commitments — (0.0)%(6)     $    (37,256)
Net Investments — 153.9%
(identified cost $174,209,591) 		    $164,806,223
Other Assets, Less Liabilities — (53.9)%     $(57,727,055)
Net Assets Applicable to Common Shares — 100.0%     $107,079,168
The percentage shown for each investment category in the Portfolio of Investments is based on net assets applicable to common shares.
* In U.S. dollars unless otherwise indicated.
(1) Security exempt from registration under Rule 144A of the Securities Act of 1933, as amended. These securities may be sold in certain transactions in reliance on an exemption from registration (normally to qualified institutional buyers). At June 30, 2023, the aggregate value of these securities is $16,668,537 or 15.6% of the Trust's net assets applicable to common shares.
(2) Variable rate security. The stated interest rate represents the rate in effect at June 30, 2023.
(3) For fair value measurement disclosure purposes, security is categorized as Level 3 (see Note 10).
(4) Non-income producing security.
(5) Security was acquired in connection with a restructuring of a Senior Loan and may be subject to restrictions on resale.
(6) Amount is less than 0.05% or (0.05)%, as applicable.
(7) Issuer is in default with respect to interest and/or principal payments. For a variable rate security, interest rate has been adjusted to reflect non-accrual status.
(8) Principal amount is less than $500.
 
28
See Notes to Financial Statements.
Eaton Vance
Senior Income Trust
June 30, 2023
Portfolio of Investments  — continued
(9) Senior floating-rate loans (Senior Loans) often require prepayments from excess cash flows or permit the borrowers to repay at their election. The degree to which borrowers repay, whether as a contractual requirement or at their election, cannot be predicted with accuracy. As a result, the actual remaining maturity may be substantially less than the stated maturities shown. However, Senior Loans will typically have an expected average life of approximately two to four years. Senior Loans typically have rates of interest which are redetermined periodically by reference to a base lending rate, plus a spread. These base lending rates are primarily the Secured Overnight Financing Rate (“SOFR”) (or the London Interbank Offered Rate (“LIBOR”) for those loans whose rates reset prior to the discontinuance of LIBOR on June 30, 2023) and secondarily, the prime rate offered by one or more major United States banks (the “Prime Rate”). Base lending rates may be subject to a floor, or minimum rate. Rates for SOFR are generally 1 or 3-month tenors and may also be subject to a credit spread adjustment. Senior Loans are generally subject to contractual restrictions that must be satisfied before they can be bought or sold.
(10) This Senior Loan will settle after June 30, 2023, at which time the interest rate will be determined.
(11) The stated interest rate represents the weighted average interest rate at June 30, 2023 of contracts within the senior loan facility. Interest rates on contracts are primarily redetermined either weekly, monthly or quarterly by reference to the indicated base lending rate and spread and the reset period.
(12) Unfunded or partially unfunded loan commitments. The stated interest rate reflects the weighted average of the reference rate and spread for the funded portion, if any, and the commitment fees on the portion of the loan that is unfunded. At June 30, 2023, the total value of unfunded loan commitments is $36,924. See Note 1F for description.
(13) May be deemed to be an affiliated investment company. The rate shown is the annualized seven-day yield as of June 30, 2023.
 
Forward Foreign Currency Exchange Contracts (OTC) 
Currency Purchased Currency Sold Counterparty Settlement
Date 		Unrealized
Appreciation 		Unrealized
(Depreciation)
USD 3,335,424 EUR 3,122,551 Standard Chartered Bank 7/5/23 $  — $ (71,905)
USD   597,706 EUR   555,136 Bank of America, N.A. 8/31/23   —   (9,762)
USD   602,813 EUR   560,000 Bank of America, N.A. 8/31/23   —   (9,978)
USD   602,745 EUR   560,000 Bank of America, N.A. 8/31/23   —  (10,046)
USD   602,675 EUR   560,000 Bank of America, N.A. 8/31/23   —  (10,116)
USD   197,846 EUR   183,635 Standard Chartered Bank 8/31/23   —   (3,101)
USD   602,903 EUR   560,000 State Street Bank and Trust Company 8/31/23   —   (9,887)
USD   602,625 EUR   560,000 State Street Bank and Trust Company 8/31/23   —  (10,166)
USD 1,140,858 GBP   923,126 State Street Bank and Trust Company 8/31/23   —  (31,802)
USD   877,255 EUR   800,000 Bank of America, N.A. 9/29/23   558      —
USD    59,320 EUR    54,105 Standard Chartered Bank 9/29/23    28      —
USD   877,389 EUR   800,000 State Street Bank and Trust Company 9/29/23   691      —
USD   944,564 EUR   861,345 State Street Bank and Trust Company 9/29/23   640      —
USD   877,292 EUR   800,000 State Street Bank and Trust Company 9/29/23   594      —
            $2,511 $(166,763)
Abbreviations:
DIP – Debtor In Possession
EURIBOR – Euro Interbank Offered Rate
LIBOR – London Interbank Offered Rate
OTC – Over-the-counter
PIK – Payment In Kind
SOFR – Secured Overnight Financing Rate
SONIA – Sterling Overnight Interbank Average
Currency Abbreviations:
EUR – Euro
GBP – British Pound Sterling
USD – United States Dollar
 
29
See Notes to Financial Statements.
Eaton Vance
Senior Income Trust
June 30, 2023
Statement of Assets and Liabilities  
  June 30, 2023
Assets  
Unaffiliated investments, at value (identified cost $171,045,946) $161,642,578
Affiliated investments, at value (identified cost $3,163,645) 3,163,645
Cash 2,361,115
Foreign currency, at value (identified cost $1,493,479) 1,501,719
Interest and dividends receivable 1,306,172
Dividends receivable from affiliated investments 13,257
Receivable for investments sold 3,610,863
Receivable for open forward foreign currency exchange contracts 2,511
Prepaid upfront fees on notes payable 18,966
Prepaid expenses 23,570
Total assets $173,644,396
Liabilities  
Notes payable $20,000,000
Payable for investments purchased 8,144,172
Payable for open forward foreign currency exchange contracts 166,763
Payable to affiliates:  
 Investment adviser fee 94,945
Administration fee 33,565
Trustees' fees 2,750
Accrued expenses 509,808
Total liabilities $28,952,003
Auction preferred shares (1,504 shares outstanding) at liquidation value plus cumulative unpaid dividends $37,613,225
Net assets applicable to common shares $107,079,168
Sources of Net Assets  
Common shares, $0.01 par value, unlimited number of shares authorized $175,389
Additional paid-in capital 139,373,487
Accumulated loss (32,469,708)
Net assets applicable to common shares $107,079,168
Common Shares Issued and Outstanding 17,538,858
Net Asset Value Per Common Share  
Net assets ÷ common shares issued and outstanding $6.11
30
See Notes to Financial Statements.
Eaton Vance
Senior Income Trust
June 30, 2023
Statement of Operations
  Year Ended
  June 30, 2023
Investment Income  
Dividend income $406,162
Dividend income from affiliated investments 103,586
Interest and other income 14,587,256
Total investment income $15,097,004
Expenses  
Investment adviser fee $1,177,963
Administration fee 409,951
Trustees’ fees and expenses 12,226
Custodian fee 84,561
Transfer and dividend disbursing agent fees 20,073
Legal and accounting services 241,112
Printing and postage 66,679
Interest expense and fees 1,117,785
Preferred shares service fee 32,343
Miscellaneous 76,407
Total expenses $3,239,100
Deduct:  
Waiver and/or reimbursement of expenses by affiliates $4,194
Total expense reductions $4,194
Net expenses $3,234,906
Net investment income $11,862,098
Realized and Unrealized Gain (Loss)  
Net realized gain (loss):  
Investment transactions $(7,126,685)
Foreign currency transactions 72,760
Forward foreign currency exchange contracts 86,224
Net realized loss $(6,967,701)
Change in unrealized appreciation (depreciation):  
Investments $7,909,155
Foreign currency (22,915)
Forward foreign currency exchange contracts (285,412)
Net change in unrealized appreciation (depreciation) $7,600,828
Net realized and unrealized gain $633,127
Distributions to preferred shareholders $(1,801,915)
Net increase in net assets from operations $10,693,310
31
See Notes to Financial Statements.
Eaton Vance
Senior Income Trust
June 30, 2023
Statements of Changes in Net Assets
  Year Ended June 30,
  2023 2022
Increase (Decrease) in Net Assets    
From operations:    
Net investment income $11,862,098 $6,978,641
Net realized gain (loss) (6,967,701) 4,702,186
Net change in unrealized appreciation (depreciation) 7,600,828 (21,205,612)
Distributions to preferred shareholders (1,801,915) (113,201)
Net increase (decrease) in net assets from operations $10,693,310 $(9,637,986)
Distributions to common shareholders $(9,821,761) $(7,219,500)
Tax return of capital to common shareholders $— $(341,150)
Capital share transactions:    
Reinvestment of distributions to common shareholders $— $17,633
Cost of shares repurchased in tender offer (see Note 6) — (138,036,580)
Net decrease in net assets from capital share transactions $— $(138,018,947)
Net increase (decrease) in net assets $871,549 $(155,217,583)
Net Assets Applicable to Common Shares    
At beginning of year $106,207,619 $261,425,202
At end of year $107,079,168 $106,207,619
32
See Notes to Financial Statements.
Eaton Vance
Senior Income Trust
June 30, 2023
Statement of Cash Flows
  Year Ended
  June 30, 2023
Cash Flows From Operating Activities  
Net increase in net assets from operations $10,693,310
Distributions to preferred shareholders 1,801,915
Net increase in net assets from operations excluding distributions to preferred shareholders $12,495,225
Adjustments to reconcile net increase in net assets from operations to net cash provided by operating activities:  
Investments purchased (36,097,491)
Investments sold and principal repayments 44,542,941
Increase in short-term investments, net (664,053)
Net amortization/accretion of premium (discount) (891,502)
Amortization of prepaid upfront fees on notes payable 64,528
Increase in interest and dividends receivable (361,591)
Increase in dividends receivable from affiliated investment (12,288)
Increase in prepaid expenses (19,212)
Decrease in payable to affiliate for investment adviser fee (5,999)
Decrease in payable to affiliate for administration fee (1,518)
Increase in payable to affiliate for Trustees' fees 347
Increase in accrued expenses 268,839
Decrease in unfunded loan commitments (277,938)
Net change in unrealized (appreciation) depreciation from investments (7,909,155)
Net change in unrealized (appreciation) depreciation from forward foreign currency exchange contracts 285,412
Net realized loss from investments 7,126,685
Net cash provided by operating activities $18,543,230
Cash Flows From Financing Activities  
Cash distributions paid to common shareholders $(9,821,761)
Cash distributions paid to preferred shareholders (1,797,980)
Proceeds from notes payable 15,000,000
Repayments of notes payable (21,000,000)
Payment of upfront fees on notes payable (32,390)
Net cash used in financing activities $(17,652,131)
Net increase in cash* $891,099
Cash at beginning of year (including foreign currency) $2,971,735
Cash at end of year (including foreign currency) $3,862,834
Supplemental disclosure of cash flow information:  
Cash paid for interest and fees on borrowings $926,769
* Includes net change in unrealized appreciation (depreciation) on foreign currency of $5,812.
33
See Notes to Financial Statements.
Eaton Vance
Senior Income Trust
June 30, 2023
Financial Highlights
Selected data for a common share outstanding during the periods stated
  Year Ended June 30,
  2023 2022 2021 2020 2019
Net asset value — Beginning of year (Common shares) $6.060 $6.900 $6.200 $7.050 $7.180
Income (Loss) From Operations          
Net investment income(1) $0.676 $0.361 $0.406 $0.394 $0.410
Net realized and unrealized gain (loss) 0.037 (0.873) 0.702 (0.817) (0.172)
Distributions to preferred shareholders:
From net investment income(1) 		(0.103) (0.006) (0.001) (0.017) (0.031)
Discount on redemption and repurchase of auction preferred shares(1) — — — — 0.051
Total income (loss) from operations $0.610 $(0.518) $1.107 $(0.440) $0.258
Less Distributions to Common Shareholders          
From net investment income $(0.560) $(0.375) $(0.407) $(0.410) $(0.388)
Tax return of capital — (0.019) — — —
Total distributions to common shareholders $(0.560) $(0.394) $(0.407) $(0.410) $(0.388)
Discount on tender offer (see Note 6)(1) $— $0.072 $— $— $—
Net asset value — End of year (Common shares) $6.110 $6.060 $6.900 $6.200 $7.050
Market value — End of year (Common shares) $5.460 $5.460 $6.800 $5.330 $6.230
Total Investment Return on Net Asset Value(2) 11.71% (6.68)%(3) 18.65% (5.64)% 4.46%(4)
Total Investment Return on Market Value(2) 10.80% (14.68)% 36.01% (8.20)% 3.88%
34
See Notes to Financial Statements.
Eaton Vance
Senior Income Trust
June 30, 2023
Financial Highlights — continued
Selected data for a common share outstanding during the periods stated
  Year Ended June 30,
  2023 2022 2021 2020 2019
Ratios/Supplemental Data          
Net assets applicable to common shares, end of year (000’s omitted) $107,079 $106,208 $261,425 $234,657 $266,926
Ratios (as a percentage of average daily net assets applicable to common shares):(5)†          
Expenses excluding interest and fees 1.99%(6) 1.91% 1.96% 1.73% 1.73%
Interest and fee expense(7) 1.05% 0.47% 0.57% 1.19% 1.40%
Total expenses 3.04%(6) 2.38% 2.53% 2.92% 3.13%
Net investment income 11.15% 5.31% 6.08% 5.93% 5.74%
Portfolio Turnover 27% 43% 40% 57% 26%
Senior Securities:          
Total notes payable outstanding (in 000’s) $20,000 $26,000 $103,000 $95,000 $103,000
Asset coverage per $1,000 of notes payable(8) $8,235 $6,531 $3,903 $3,866 $3,957
Total preferred shares outstanding 1,504 1,504 1,504 1,504 1,504
Asset coverage per preferred share(9) $71,481 $66,752 $71,484 $69,242 $72,464
Involuntary liquidation preference per preferred share(10) $25,000 $25,000 $25,000 $25,000 $25,000
Approximate market value per preferred share(10) $25,000 $25,000 $25,000 $25,000 $25,000
(1) Computed using average common shares outstanding.
(2) Returns are historical and are calculated by determining the percentage change in net asset value or market value with all distributions reinvested. Distributions are assumed to be reinvested at prices obtained under the Trust’s dividend reinvestment plan.
(3) The total return based on net asset value reflects the impact of the tender and repurchase by the Trust of a portion of its common shares at 99% of the Trust’s net asset value per common share. Absent this transaction, the total return based on net asset value would have been (7.90)%.
(4) The total return based on net asset value reflects the impact of the tender and repurchase by the Trust of a portion of its Auction Preferred Shares at 92% of the per share liquidation preference. Absent this transaction, the total return based on net asset value would have been 3.71%.
(5) Ratios do not reflect the effect of dividend payments to preferred shareholders.
(6) Includes a reduction by the investment adviser of a portion of its adviser fee due to the Trust’s investment in the Liquidity Fund (equal to less than 0.005% of average daily net assets for the year ended June 30, 2023).
(7) Interest and fee expense relates to the notes payable to partially redeem the Trust’s Auction Preferred Shares and/or to fund investments (see Note 8).
(8) Calculated by subtracting the Trust’s total liabilities (not including the notes payable and preferred shares) from the Trust’s total assets, and dividing the result by the notes payable balance in thousands.
(9) Calculated by subtracting the Trust’s total liabilities (not including the notes payable and preferred shares) from the Trust’s total assets, dividing the result by the sum of the value of the notes payable and liquidation value of the preferred shares, and multiplying the result by the liquidation value of one preferred share.
(10) Plus accumulated and unpaid dividends.
† Ratios based on net assets applicable to common shares plus preferred shares and borrowings are presented below. Ratios do not reflect the effect of dividend payments to preferred shareholders.
  Year Ended June 30,
  2023 2022 2021 2020 2019
Expenses excluding interest and fees   1.29%    1.28%   1.25%   1.11%   1.12%
Interest and fee expense   0.68%    0.32%   0.36%   0.76%   0.91%
Total expenses   1.97%    1.60%   1.61%   1.87%   2.03%
Net investment income 7.23% 3.57% 3.87% 3.81% 3.73%
35
See Notes to Financial Statements.
Eaton Vance
Senior Income Trust
June 30, 2023
Notes to Financial Statements 
1  Significant Accounting Policies
Eaton Vance Senior Income Trust (the Trust) is a Massachusetts business trust registered under the Investment Company Act of 1940, as amended (the 1940 Act), as a diversified, closed-end management investment company. The Trust’s investment objective is to provide a high level of current income, consistent with the preservation of capital, by investing primarily in senior, secured floating-rate loans.
The following is a summary of significant accounting policies of the Trust. The policies are in conformity with accounting principles generally accepted in the United States of America (U.S. GAAP). The Trust is an investment company and follows accounting and reporting guidance in the Financial Accounting Standards Board (FASB) Accounting Standards Codification Topic 946.
A  Investment Valuation—The following methodologies are used to determine the market value or fair value of investments.
Senior Floating-Rate Loans. Interests in senior floating-rate loans (Senior Loans) are valued generally at the average mean of bid and ask quotations obtained from a third party pricing service. Senior Loans, for which a valuation is not available or deemed unreliable, are fair valued by the investment adviser utilizing one or more of the valuation techniques described below to assess the likelihood that the borrower will make a full repayment of the loan underlying such Senior Loan. If the investment adviser believes that there is a reasonable likelihood of full repayment, the investment adviser will determine fair value using a matrix pricing approach that considers the yield on the Senior Loan relative to yields on other Senior Loans issued by companies of comparable credit quality. If the investment adviser believes there is not a reasonable likelihood of full repayment, the investment adviser will determine fair value using analyses that include, but are not limited to: (i) a comparison of the value of the borrower’s outstanding equity and debt to that of comparable public companies; (ii) a discounted cash flow analysis; or (iii) when the investment adviser believes it is likely that a borrower will be liquidated or sold, an analysis of the terms of such liquidation or sale. In certain cases, the investment adviser will use a combination of analytical methods to determine fair value, such as when only a portion of a borrower’s assets are likely to be sold. In conducting its assessment and analyses for purposes of determining fair value of a Senior Loan, the investment adviser will use its discretion and judgment in considering and appraising relevant factors. Junior Loans (i.e., subordinated loans and second lien loans) are valued in the same manner as Senior Loans.
Debt Obligations. Debt obligations are generally valued on the basis of valuations provided by third party pricing services, as derived from such services’ pricing models. Inputs to the models may include, but are not limited to, reported trades, executable bid and ask prices, broker/dealer quotations, prices or yields of securities with similar characteristics, interest rates, anticipated prepayments, benchmark curves or information pertaining to the issuer, as well as industry and economic events. The pricing services may use a matrix approach, which considers information regarding securities with similar characteristics to determine the valuation for a security. Short-term debt obligations purchased with a remaining maturity of sixty days or less for which a valuation from a third party pricing service is not readily available may be valued at amortized cost, which approximates fair value.
Equity Securities. Equity securities listed on a U.S. securities exchange generally are valued at the last sale or closing price on the day of valuation or, if no sales took place on such date, at the mean between the closing bid and ask prices on the exchange where such securities are principally traded. Equity securities listed on the NASDAQ National Market System are valued at the NASDAQ official closing price. Unlisted or listed securities for which closing sales prices or closing quotations are not available are valued at the mean between the latest available bid and ask prices or, in the case of preferred equity securities that are not listed or traded in the over-the-counter market, by a third party pricing service that uses various techniques that consider factors including, but not limited to, prices or yields of securities with similar characteristics, benchmark yields, broker/dealer quotes, quotes of underlying common stock, issuer spreads, as well as industry and economic events.
Derivatives. Forward foreign currency exchange contracts are generally valued at the mean of the average bid and average ask prices that are reported by currency dealers to a third party pricing service at the valuation time. Such third party pricing service valuations are supplied for specific settlement periods and the Trust’s forward foreign currency exchange contracts are valued at an interpolated rate between the closest preceding and subsequent settlement period reported by the third party pricing service.
Foreign Securities and Currencies. Foreign securities and currencies are valued in U.S. dollars, based on foreign currency exchange rate quotations supplied by a third party pricing service. The pricing service uses a proprietary model to determine the exchange rate. Inputs to the model include reported trades and implied bid/ask spreads.
Other. Investments in management investment companies (including money market funds) that do not trade on an exchange are valued at the net asset value as of the close of each business day.
Fair Valuation. In connection with Rule 2a-5 of the 1940 Act, the Trustees have designated the Trust’s investment adviser as its valuation designee. Investments for which valuations or market quotations are not readily available or are deemed unreliable are valued by the investment adviser, as valuation designee, at fair value using methods that most fairly reflect the security’s “fair value”, which is the amount that the Trust might reasonably expect to receive for the security upon its current sale in the ordinary course. Each such determination is based on a consideration of relevant factors, which are likely to vary from one pricing context to another. These factors may include, but are not limited to, the type of security, the existence of any contractual restrictions on the security’s disposition, the price and extent of public trading in similar securities of the issuer or of comparable companies or entities, quotations or relevant information obtained from broker/dealers or other market participants, information obtained from the issuer, analysts, and/or the appropriate stock exchange (for exchange-traded securities), an analysis of the company’s or entity’s financial statements, and an evaluation of the forces that influence the issuer and the market(s) in which the security is purchased and sold.
36
Eaton Vance
Senior Income Trust
June 30, 2023
Notes to Financial Statements  — continued
B  Investment Transactions—Investment transactions for financial statement purposes are accounted for on a trade date basis. Realized gains and losses on investments sold are determined on the basis of identified cost.
C  Income—Interest income is recorded on the basis of interest accrued, adjusted for amortization of premium or accretion of discount. Fees associated with loan amendments are recognized immediately. Dividend income is recorded on the ex-dividend date for dividends received in cash and/or securities. Distributions from investment companies are recorded as dividend income, capital gains or return of capital based on the nature of the distribution.
D  Federal Taxes—The Trust's policy is to comply with the provisions of the Internal Revenue Code applicable to regulated investment companies and to distribute to shareholders each year substantially all of its net investment income, and all or substantially all of its net realized capital gains. Accordingly, no provision for federal income or excise tax is necessary.
As of June 30, 2023, the Trust had no uncertain tax positions that would require financial statement recognition, de-recognition, or disclosure. The Trust files a U.S. federal income tax return annually after its fiscal year-end, which is subject to examination by the Internal Revenue Service for a period of three years from the date of filing.
E  Foreign Currency Translation—Investment valuations, other assets, and liabilities initially expressed in foreign currencies are translated each business day into U.S. dollars based upon current exchange rates. Purchases and sales of foreign investment securities and income and expenses denominated in foreign currencies are translated into U.S. dollars based upon currency exchange rates in effect on the respective dates of such transactions. Recognized gains or losses on investment transactions attributable to changes in foreign currency exchange rates are recorded for financial statement purposes as net realized gains and losses on investments. That portion of unrealized gains and losses on investments that results from fluctuations in foreign currency exchange rates is not separately disclosed.
F  Unfunded Loan Commitments—The Trust may enter into certain loan agreements all or a portion of which may be unfunded. The Trust is obligated to fund these commitments at the borrower's discretion. These commitments are disclosed in the accompanying Portfolio of Investments. At June 30, 2023, the Trust had sufficient cash and/or securities to cover these commitments.
G  Use of Estimates—The preparation of the financial statements in conformity with U.S. GAAP requires management to make estimates and assumptions that affect the reported amounts of assets and liabilities at the date of the financial statements and the reported amounts of income and expense during the reporting period. Actual results could differ from those estimates.
H  Indemnifications—Under the Trust’s organizational documents, its officers and Trustees may be indemnified against certain liabilities and expenses arising out of the performance of their duties to the Trust. Under Massachusetts law, if certain conditions prevail, shareholders of a Massachusetts business trust (such as the Trust) could be deemed to have personal liability for the obligations of the Trust. However, the Trust’s Declaration of Trust contains an express disclaimer of liability on the part of Trust shareholders and the By-laws provide that the Trust shall assume, upon request by the shareholder, the defense on behalf of any Trust shareholders. Moreover, the By-laws also provide for indemnification out of Trust property of any shareholder held personally liable solely by reason of being or having been a shareholder for all loss or expense arising from such liability. Additionally, in the normal course of business, the Trust enters into agreements with service providers that may contain indemnification clauses. The Trust's maximum exposure under these arrangements is unknown as this would involve future claims that may be made against the Trust that have not yet occurred.
I  Forward Foreign Currency Exchange Contracts—The Trust may enter into forward foreign currency exchange contracts for the purchase or sale of a specific foreign currency at a fixed price on a future date. The forward foreign currency exchange contracts are adjusted by the daily exchange rate of the underlying currency and any gains or losses are recorded as unrealized until such time as the contracts have been closed. Risks may arise upon entering these contracts from the potential inability of counterparties to meet the terms of their contracts and from movements in the value of a foreign currency relative to the U.S. dollar.
2  Auction Preferred Shares
The Trust issued Auction Preferred Shares (APS) on July 27, 2001 in a public offering. Dividends on the APS, which accrue daily, are cumulative at rates which are reset every seven days by an auction, unless a special dividend period has been set. Series of APS are identical in all respects except for the reset dates of the dividend rates. If the APS auctions do not successfully clear, the dividend payment rate over the next period for the APS holders is set at a specified maximum applicable rate until such time as the APS auctions are successful. Auctions have not cleared since February 13, 2008 and the rate since that date has been the maximum applicable rate (see Note 3). The maximum applicable rate on the APS is 125% of the “AA” Financial Composite Commercial Paper Rate at the date of the auction. The stated spread over the reference benchmark rate is determined based on the credit rating of the APS.
37
Eaton Vance
Senior Income Trust
June 30, 2023
Notes to Financial Statements  — continued
The number of APS issued and outstanding as of June 30, 2023 are as follows:
  APS Issued and
Outstanding
Series A 752
Series B 752
The APS are redeemable at the option of the Trust at a redemption price equal to $25,000 per share, plus accumulated and unpaid dividends, on any dividend payment date. The APS are also subject to mandatory redemption at a redemption price equal to $25,000 per share, plus accumulated and unpaid dividends, if the Trust is in default for an extended period on its asset maintenance requirements with respect to the APS. If the dividends on the APS remain unpaid in an amount equal to two full years’ dividends, the holders of the APS as a class have the right to elect a majority of the Board of Trustees. In general, the holders of the APS and the common shares have equal voting rights of one vote per share, except that the holders of the APS, as a separate class, have the right to elect at least two members of the Board of Trustees. The APS have a liquidation preference of $25,000 per share, plus accumulated and unpaid dividends. The Trust is required to maintain certain asset coverage with respect to the APS as defined in the Trust's By-Laws and the 1940 Act. The Trust pays an annual fee up to 0.15% of the liquidation value of the APS to broker/dealers as a service fee if the auctions are unsuccessful; otherwise, the annual fee is 0.25%.
3  Distributions to Shareholders and Income Tax Information
The Trust intends to make monthly distributions of net investment income to common shareholders, after payment of any dividends on any outstanding APS. In addition, at least annually, the Trust intends to distribute all or substantially all of its net realized capital gains. Distributions to common shareholders are recorded on the ex-dividend date. Distributions to preferred shareholders are recorded daily and are payable at the end of each dividend period. The dividend rates for the APS at June 30, 2023, and the amount of dividends accrued (including capital gains, if any) to APS shareholders, average APS dividend rates, and dividend rate ranges for the year then ended were as follows:
  APS Dividend
Rates at
June 30, 2023 		Dividends
Accrued to
APS
Shareholders 		Average
APS
Dividend
Rates 		Dividend
Rate
Ranges
(%)
Series A 6.33% $898,509 4.78% 1.93-6.34
Series B 6.33 903,406 4.81 1.96-6.40
Beginning February 13, 2008 and consistent with the patterns in the broader market for auction-rate securities, the Trust's APS auctions were unsuccessful in clearing due to an imbalance of sell orders over bids to buy the APS. As a result, the dividend rates of the APS were reset to the maximum applicable rates. The table above reflects such maximum dividend rate for each series as of June 30, 2023.
Distributions to shareholders are determined in accordance with income tax regulations, which may differ from U.S. GAAP. As required by U.S. GAAP, only distributions in excess of tax basis earnings and profits are reported in the financial statements as a return of capital. Permanent differences between book and tax accounting relating to distributions are reclassified to paid-in capital. For tax purposes, distributions from short-term capital gains are considered to be from ordinary income.
The tax character of distributions declared for the years ended June 30, 2023 and June 30, 2022 was as follows:
  Year Ended June 30,
  2023 2022
Ordinary income $11,623,676 $7,332,701
Tax return of capital $ — $341,150
During the year ended June 30, 2023, accumulated loss was decreased by $8,463 and paid-in capital was decreased by $8,463 due to differences between book and tax accounting. These reclassifications had no effect on the net assets or net asset value per share of the Trust.
38
Eaton Vance
Senior Income Trust
June 30, 2023
Notes to Financial Statements  — continued
As of June 30, 2023, the components of distributable earnings (accumulated loss) on a tax basis were as follows:
Undistributed ordinary income $   602,469
Deferred capital losses (24,196,487)
Net unrealized depreciation (8,875,690)
Accumulated loss $(32,469,708)
At June 30, 2023, the Trust, for federal income tax purposes, had deferred capital losses of $24,196,487 which would reduce its taxable income arising from future net realized gains on investment transactions, if any, to the extent permitted by the Internal Revenue Code, and thus would reduce the amount of distributions to shareholders, which would otherwise be necessary to relieve the Trust of any liability for federal income or excise tax. The deferred capital losses are treated as arising on the first day of the Trust’s next taxable year and retain the same short-term or long-term character as when originally deferred. Of the deferred capital losses at June 30, 2023, $1,391,581 are short-term and $22,804,906 are long-term.
The cost and unrealized appreciation (depreciation) of investments, including open derivative contracts, of the Trust at June 30, 2023, as determined on a federal income tax basis, were as follows:
Aggregate cost $173,691,316
Gross unrealized appreciation $1,332,169
Gross unrealized depreciation (10,217,262)
Net unrealized depreciation $(8,885,093)
4  Investment Adviser Fee and Other Transactions with Affiliates
The investment adviser fee is earned by Eaton Vance Management (EVM), an indirect, wholly-owned subsidiary of Morgan Stanley, as compensation for investment advisory services rendered to the Trust. The investment adviser fee is computed at an annual rate of 0.71% (0.72% prior to May 1, 2023) of the Trust’s average weekly gross assets and is payable monthly. The annual investment adviser fee rate shall be reduced to the following as of the stated date: May 1, 2024: 0.70%, May 1, 2025: 0.69% and May 1, 2026: 0.55%. Gross assets as referred to herein are calculated by deducting accrued liabilities of the Trust except the principal amount of any indebtedness for money borrowed, including debt securities issued by the Trust. For the year ended June 30, 2023, the Trust’s investment adviser fee amounted to $1,177,963.
The Trust may invest in a money market fund, the Institutional Class of the Morgan Stanley Institutional Liquidity Funds - Government Portfolio (the "Liquidity Fund"), an open-end management investment company managed by Morgan Stanley Investment Management Inc., a wholly-owned subsidiary of Morgan Stanley. The investment adviser fee paid by the Trust is reduced by an amount equal to its pro-rata share of the advisory and administration fees paid by the Trust due to its investment in the Liquidity Fund. For the year ended June 30, 2023, the investment adviser fee paid was reduced by $4,194 relating to the Trust’s investment in the Liquidity Fund. The administration fee is earned by EVM for administering the business affairs of the Trust and is computed at an annual rate of 0.25% of the Trust’s average weekly gross assets. For the year ended June 30, 2023, the administration fee amounted to $409,951.
Trustees and officers of the Trust who are members of EVM’s organization receive remuneration for their services to the Trust out of the investment adviser fee. Trustees of the Trust who are not affiliated with EVM may elect to defer receipt of all or a percentage of their annual fees in accordance with the terms of the Trustees Deferred Compensation Plan. For the year ended June 30, 2023, no significant amounts have been deferred. Certain officers and Trustees of the Trust are officers of EVM.
5  Purchases and Sales of Investments
Purchases and sales of investments, other than short-term obligations and including maturities, paydowns and principal repayments on Senior Loans, aggregated $42,749,448 and $45,570,090, respectively, for the year ended June 30, 2023.
6  Common Shares of Beneficial Interest and Shelf Offering
The Trust may issue common shares pursuant to its dividend reinvestment plan. There were no common shares issued by the Trust for the year ended June 30, 2023. Common shares issued by the Trust pursuant to its dividend reinvestment plan for the year ended June 30, 2022 were 2,542.
39
Eaton Vance
Senior Income Trust
June 30, 2023
Notes to Financial Statements  — continued
As announced on May 12, 2021, the Trust’s Board of Trustees authorized an initial conditional cash tender offer (the “Initial Tender Offer”) by the Trust for up to 60% of its outstanding common shares at a price per share equal to 99% of the Trust’s net asset value (“NAV”) per share as of the close of regular trading on the New York Stock Exchange on the date the tender offer expires. On June 29, 2021, the Trust commenced a cash tender offer for up to 22,719,965 of its outstanding common shares. The tender offer expired at 5:00 P.M. Eastern Time on July 30, 2021. The number of shares properly tendered was 20,330,291.438. The purchase price of the properly tendered shares was equal to $6.7897 per share for an aggregate purchase price of $138,036,580.
In addition to the Initial Tender Offer, the Trust announced on May 12, 2021 that it will conduct cash tender offers in the fourth quarter of each of 2022, 2023 and 2024 (each, a “Conditional Tender Offer”) for up to 10% of the Trust’s then-outstanding common shares if, from January to August of the relevant year, the Trust’s shares trade at an average daily discount to NAV of more than 10%, based upon the Trust’s volume-weighted average market price and NAV on each business day during the period. If triggered, common shares tendered and accepted in a Conditional Tender Offer would be repurchased at a price per share equal to 98% of the Trust’s NAV as of the close of regular trading on the New York Stock Exchange on the date such Conditional Tender Offer expires. The condition to trigger a tender offer by the Trust in the fourth quarter of 2022 was not met.
In November 2013, the Board of Trustees initially approved a share repurchase program for the Trust. Pursuant to the reauthorization of the share repurchase program by the Board of Trustees in March 2019, the Trust is authorized to repurchase up to 10% of its common shares outstanding as of the last day of the prior calendar year at market prices when shares are trading at a discount to net asset value. The share repurchase program does not obligate the Trust to purchase a specific amount of shares. There were no repurchases of common shares by the Trust for the years ended June 30, 2023 and June 30, 2022.
Pursuant to a registration statement filed with the SEC, the Trust is authorized to issue up to an additional 4,551,438 common shares through an equity shelf offering program (the “shelf offering”). Under the shelf offering, the Trust, subject to market conditions, may raise additional capital from time to time and in varying amounts and offering methods at a net price at or above the Trust’s net asset value per common share. During the years ended June 30, 2023 and June 30, 2022, there were no shares sold by the Trust pursuant to its shelf offering.
7  Financial Instruments
The Trust may trade in financial instruments with off-balance sheet risk in the normal course of its investing activities. These financial instruments may include forward foreign currency exchange contracts and may involve, to a varying degree, elements of risk in excess of the amounts recognized for financial statement purposes. The notional or contractual amounts of these instruments represent the investment the Trust has in particular classes of financial instruments and do not necessarily represent the amounts potentially subject to risk. The measurement of the risks associated with these instruments is meaningful only when all related and offsetting transactions are considered. A summary of obligations under these financial instruments at June 30, 2023 is included in the Portfolio of Investments. At June 30, 2023, the Trust had sufficient cash and/or securities to cover commitments under these contracts.
The Trust is subject to foreign exchange risk in the normal course of pursuing its investment objective. Because the Trust holds foreign currency denominated investments, the value of these investments and related receivables and payables may change due to future changes in foreign currency exchange rates. To hedge against this risk, the Trust enters into forward foreign currency exchange contracts.
The Trust enters into forward foreign currency exchange contracts that may contain provisions whereby the counterparty may terminate the contract under certain conditions, including but not limited to a decline in the Trust’s net assets below a certain level over a certain period of time, which would trigger a payment by the Trust for those derivatives in a liability position. At June 30, 2023, the fair value of derivatives with credit-related contingent features in a net liability position was $166,763. At June 30, 2023, there were no assets pledged by the Trust for such liability.
The over-the-counter (OTC) derivatives in which the Trust invests are subject to the risk that the counterparty to the contract fails to perform its obligations under the contract.  To mitigate this risk, the Trust has entered into an International Swaps and Derivatives Association, Inc. Master Agreement (“ISDA Master Agreement”) or similar agreement with substantially all its derivative counterparties. An ISDA Master Agreement is a bilateral agreement between the Trust and a counterparty that governs certain OTC derivatives and typically contains, among other things, set-off provisions in the event of a default and/or termination event as defined under the relevant ISDA Master Agreement. Under an ISDA Master Agreement, the Trust may, under certain circumstances, offset with the counterparty certain derivative financial instruments’ payables and/or receivables with collateral held and/or posted and create one single net payment. The provisions of the ISDA Master Agreement typically permit a single net payment in the event of default including the bankruptcy or insolvency of the counterparty. However, bankruptcy or insolvency laws of a particular jurisdiction may impose restrictions on or prohibitions against the right of offset in bankruptcy or insolvency. Certain ISDA Master Agreements allow counterparties to OTC derivatives to terminate derivative contracts prior to maturity in the event the Trust’s net assets decline by a stated percentage or the Trust fails to meet the terms of its ISDA Master Agreements, which would cause the counterparty to accelerate payment by the Trust of any net liability owed to it.
The collateral requirements for derivatives traded under an ISDA Master Agreement are governed by a Credit Support Annex to the ISDA Master Agreement. Collateral requirements are determined at the close of business each day and are typically based on changes in market values for each transaction under an ISDA Master Agreement and netted into one amount for such agreement. Generally, the amount of collateral due from or to a counterparty is subject to a minimum transfer threshold amount before a transfer is required, which may vary by counterparty. Collateral pledged for the benefit of the Trust and/or
40
Eaton Vance
Senior Income Trust
June 30, 2023
Notes to Financial Statements  — continued
counterparty is held in segregated accounts by the Trust’s custodian and cannot be sold, re-pledged, assigned or otherwise used while pledged. The portion of such collateral representing cash, if any, is reflected as deposits for derivatives collateral and, in the case of cash pledged by a counterparty for the benefit of the Trust, a corresponding liability on the Statement of Assets and Liabilities. Securities pledged by the Trust as collateral, if any, are identified as such in the Portfolio of Investments.
The fair value of open derivative instruments (not considered to be hedging instruments for accounting disclosure purposes) and whose primary underlying risk exposure is foreign exchange risk at June 30, 2023 was as follows:
  Fair Value
Derivative Asset Derivative(1) Liability Derivative(2)
Forward foreign currency exchange contracts $2,511 $(166,763)
(1) Statement of Assets and Liabilities location: Receivable for open forward foreign currency exchange contracts.
(2) Statement of Assets and Liabilities location: Payable for open forward foreign currency exchange contracts.
The Trust's derivative assets and liabilities at fair value by type, which are reported gross in the Statement of Assets and Liabilities, are presented in the table above. The following tables present the Trust's derivative assets and liabilities by counterparty, net of amounts available for offset under a master netting agreement and net of the related collateral received by the Trust for such assets and pledged by the Trust for such liabilities as of June 30, 2023.
Counterparty Derivative
Assets Subject to
Master Netting
Agreement 		Derivatives
Available
for Offset 		Non-cash
Collateral
Received(a) 		Cash
Collateral
Received(a) 		Net Amount
of Derivative
Assets(b)
Bank of America, N.A. $558 $(558) $ — $ — $ —
Standard Chartered Bank 28 (28)  —  —  —
State Street Bank and Trust Company 1,925 (1,925)  —  —  —
  $2,511 $(2,511) $— $— $—
    
Counterparty Derivative
Liabilities Subject to
Master Netting
Agreement 		Derivatives
Available
for Offset 		Non-cash
Collateral
Pledged(a) 		Cash
Collateral
Pledged(a) 		Net Amount
of Derivative
Liabilities(c)
Bank of America, N.A. $(39,902) $558 $ — $ — $(39,344)
Standard Chartered Bank (75,006) 28  —  — (74,978)
State Street Bank and Trust Company (51,855) 1,925  —  — (49,930)
  $(166,763) $2,511 $ — $ — $(164,252)
(a) In some instances, the total collateral received and/or pledged may be more than the amount shown due to overcollateralization.
(b) Net amount represents the net amount due from the counterparty in the event of default.
(c) Net amount represents the net amount payable to the counterparty in the event of default.
41
Eaton Vance
Senior Income Trust
June 30, 2023
Notes to Financial Statements  — continued
The effect of derivative instruments (not considered to be hedging instruments for accounting disclosure purposes) on the Statement of Operations and whose primary underlying risk exposure is foreign exchange risk for the year ended June 30, 2023 was as follows:
Derivative Realized Gain (Loss)
on Derivatives Recognized
in Income(1) 		Change in Unrealized
Appreciation (Depreciation) on
Derivatives Recognized in Income(2)
Forward foreign currency exchange contracts $86,224 $(285,412)
(1) Statement of Operations location: Net realized gain (loss) - Forward foreign currency exchange contracts.
(2) Statement of Operations location: Change in unrealized appreciation (depreciation) - Forward foreign currency exchange contracts.
The average notional amount of forward foreign currency exchange contracts (based on the absolute value of notional amounts of currency purchased and currency sold) outstanding during the year ended June 30, 2023, which is indicative of the volume of this derivative type, was approximately $15,400,000.
8  Revolving Credit and Security Agreement
Effective May 4, 2023, the Trust has entered into a Credit Agreement (the Agreement) with a bank to borrow up to a limit of $45 million pursuant to a revolving line of credit. Borrowings under the Agreement are secured by the assets of the Trust. Interest is generally charged at a rate above the Secured Overnight Financing Rate (SOFR) and is payable monthly. Under the terms of the Agreement, in effect through May 2, 2024, the Trust pays a facility fee of 0.15% on the borrowing limit. In connection with entering into the Agreement, the Trust also paid upfront fees of $22,500, which are being amortized to interest expense to May 2, 2024.  The unamortized balance at June 30, 2023 is approximately $19,000 and is included in prepaid upfront fees on notes payable on the Statement of Assets and Liabilities. The Trust is required to maintain certain net asset levels during the term of the Agreement. At June 30, 2023, the Trust had borrowings outstanding under the Agreement of $20,000,000 at an annual interest rate of 6.10%. Based on the short-term nature of the borrowings under the Agreement and the variable interest rate, the carrying amount of the borrowings at June 30, 2023 approximated its fair value. If measured at fair value, borrowings under the Agreement would have been considered as Level 2 in the fair value hierarchy (see Note 10) at June 30, 2023.
Prior to May 4, 2023, the Trust had entered into a Revolving Credit and Security Agreement, as amended (the Previous Agreement) with conduit lenders and a bank to borrow up to $40 million ($50 million prior to February 8, 2023). Interest was charged at a rate above the conduits’ commercial paper issuance rate and was payable monthly. Under the terms of the Previous Agreement, which was in effect through March 6, 2023 and extended to May 5, 2023, the Trust also paid a program fee of 0.90% per annum on its outstanding borrowings to administer the facility and a liquidity fee of 0.15% (0.25% if the outstanding loan amount was less than or equal to 60% of the total facility size) per annum on the unused portion of the total commitment. Program and liquidity fees under the Previous Agreement and facility fees under the Agreement, for the year ended June 30, 2023, totaled $220,797 and are included in interest expense and fees on the Statement of Operations. In connection with the extension of the Previous Agreement in February 2023, the Trust also paid upfront fees of $9,890, which were fully amortized to interest expense. For the year ended June 30, 2023, the average borrowings under the Agreement and Previous Agreement and the average annual interest rate (excluding fees) were $19,994,521 and 4.19%, respectively.
9  Affiliated Investments
At June 30, 2023, the value of the Trust's investment in funds that may be deemed to be affiliated was $3,163,645, which represents 2.9% of the Trust's net assets applicable to common shares. Transactions in such investments by the Trust for the year ended June 30, 2023 were as follows:
Name Value,
beginning
of period 		Purchases Sales
proceeds 		Net
realized
gain (loss) 		Change in
unrealized
appreciation
(depreciation) 		Value, end
of period 		Dividend
income 		Shares,
end of period
Short-Term Investments 
Liquidity Fund $2,499,592 $66,129,127 $(65,465,074) $ — $ — $3,163,645 $103,586 3,163,645
42
Eaton Vance
Senior Income Trust
June 30, 2023
Notes to Financial Statements  — continued
10  Fair Value Measurements
Under generally accepted accounting principles for fair value measurements, a three-tier hierarchy to prioritize the assumptions, referred to as inputs, is used in valuation techniques to measure fair value. The three-tier hierarchy of inputs is summarized in the three broad levels listed below.
• Level 1 – quoted prices in active markets for identical investments
• Level 2 – other significant observable inputs (including quoted prices for similar investments, interest rates, prepayment speeds, credit risk, etc.)
• Level 3 – significant unobservable inputs (including a fund's own assumptions in determining the fair value of investments)
In cases where the inputs used to measure fair value fall in different levels of the fair value hierarchy, the level disclosed is determined based on the lowest level input that is significant to the fair value measurement in its entirety. The inputs or methodology used for valuing securities are not necessarily an indication of the risk associated with investing in those securities.
At June 30, 2023, the hierarchy of inputs used in valuing the Trust’s investments and open derivative instruments, which are carried at value, were as follows:
Asset Description  Level 1 Level 2 Level 3* Total
Asset-Backed Securities $       — $ 10,959,958 $      — $ 10,959,958
Closed-End Funds 3,177,913          —       —   3,177,913
Common Stocks    31,170     734,960  141,792     907,922
Convertible Preferred Stocks        —          —        0           0
Corporate Bonds        —   7,102,034       —   7,102,034
Senior Floating-Rate Loans (Less Unfunded Loan Commitments)        — 139,272,248  222,503 139,494,751
Warrants        —           0        0           0
Miscellaneous        —          —        0           0
Short-Term Investments 3,163,645          —       —   3,163,645
Total Investments $6,372,728 $158,069,200 $ 364,295 $164,806,223
Forward Foreign Currency Exchange Contracts $       — $      2,511 $      — $      2,511
Total $6,372,728 $158,071,711 $ 364,295 $164,808,734
Liability Description         
Forward Foreign Currency Exchange Contracts $       — $   (166,763) $      — $   (166,763)
Total $       — $   (166,763) $      — $   (166,763)
* None of the unobservable inputs for Level 3 assets, individually or collectively, had a material impact on the Trust.
Level 3 investments at the beginning and/or end of the period in relation to net assets were not significant and accordingly, a reconciliation of Level 3 assets for the year ended June 30, 2023 is not presented.
11  Risks and Uncertainties
Risks Associated with Foreign Investments
Foreign investments can be adversely affected by political, economic and market developments abroad, including the imposition of economic and other sanctions by the United States or another country. There may be less publicly available information about foreign issuers because they may not be subject to reporting practices, requirements or regulations comparable to those to which United States companies are subject. Foreign markets may be smaller, less liquid and more volatile than the major markets in the United States. Trading in foreign markets typically involves higher expense than trading in the United States. The Trust may have difficulties enforcing its legal or contractual rights in a foreign country. Securities that trade or are denominated in currencies other than the U.S. dollar may be adversely affected by fluctuations in currency exchange rates.
43
Eaton Vance
Senior Income Trust
June 30, 2023
Notes to Financial Statements  — continued
Credit Risk
The Trust invests primarily in below investment grade floating-rate loans, which are considered speculative because of the credit risk of their issuers. Changes in economic conditions or other circumstances are more likely to reduce the capacity of issuers of these securities to make principal and interest payments. Such companies are more likely to default on their payments of interest and principal owed than issuers of investment grade bonds. An economic downturn generally leads to a higher non-payment rate, and a loan or other debt obligation may lose significant value before a default occurs. Lower rated investments also may be subject to greater price volatility than higher rated investments. Moreover, the specific collateral used to secure a loan may decline in value or become illiquid, which would adversely affect the loan’s value.
12  Additional Information
On August 27, 2020, Saba Capital Master Fund, Ltd., a hedge fund (“Saba”), filed claims against the Trust in a lawsuit in Suffolk County Superior Court in Massachusetts asserting breach of contract and fiduciary duty by the Trust and certain of its affiliates, the Trust's adviser, and the Board, following the implementation by the Trust of by-law amendments that (i) require trustee nominees in contested elections to obtain affirmative votes of a majority of eligible shares in order to be elected and (ii) establish certain requirements related to shares obtained in "Control Share Acquisitions". With respect to the Trust, Saba seeks rescission of these by-law provisions and certain related relief. On March 31, 2021, the court allowed in part and denied in part a motion to dismiss Saba's claims. Discovery is complete. On January 23, 2023, in ruling on the parties’ cross-motions for partial summary judgment, the court dismissed Saba’s claims for breach of fiduciary duty against the Board, while holding that the control share by-law amendment violated Section 18(i) of the 1940 Act. Additional claims and defenses will be addressed at trial, which is currently scheduled to begin in the Spring of 2024. While management of the Trust is unable to predict the outcome of this matter, it does not believe the outcome would result in the payment of any monetary damages by the Trust.
44
Eaton Vance
Senior Income Trust
June 30, 2023
Report of Independent Registered Public Accounting Firm
To the Trustees and Shareholders of Eaton Vance Senior Income Trust:
Opinion on the Financial Statements and Financial Highlights
We have audited the accompanying statement of assets and liabilities of Eaton Vance Senior Income Trust (the “Trust”), including the portfolio of investments, as of June 30, 2023, the related statements of operations and cash flows for the year then ended, the statements of changes in net assets for each of the two years in the period then ended, the financial highlights for each of the five years in the period then ended, and the related notes. In our opinion, the financial statements and financial highlights present fairly, in all material respects, the financial position of the Trust as of June 30, 2023, and the results of its operations and its cash flows for the year then ended, the changes in its net assets for each of the two years in the period then ended, and the financial highlights for each of the five years in the period then ended, in conformity with accounting principles generally accepted in the United States of America.
Basis for Opinion
These financial statements and financial highlights are the responsibility of the Trust's management. Our responsibility is to express an opinion on the Trust's financial statements and financial highlights based on our audits. We are a public accounting firm registered with the Public Company Accounting Oversight Board (United States) (PCAOB) and are required to be independent with respect to the Trust in accordance with the U.S. federal securities laws and the applicable rules and regulations of the Securities and Exchange Commission and the PCAOB.
We conducted our audits in accordance with the standards of the PCAOB. Those standards require that we plan and perform the audit to obtain reasonable assurance about whether the financial statements and financial highlights are free of material misstatement, whether due to error or fraud. The Trust is not required to have, nor were we engaged to perform, an audit of its internal control over financial reporting. As part of our audits, we are required to obtain an understanding of internal control over financial reporting but not for the purpose of expressing an opinion on the effectiveness of the Trust’s internal control over financial reporting. Accordingly, we express no such opinion.
Our audits included performing procedures to assess the risks of material misstatement of the financial statements and financial highlights, whether due to error or fraud, and performing procedures that respond to those risks. Such procedures included examining, on a test basis, evidence regarding the amounts and disclosures in the financial statements and financial highlights. Our audits also included evaluating the accounting principles used and significant estimates made by management, as well as evaluating the overall presentation of the financial statements and financial highlights. Our procedures included confirmation of securities and senior loans owned as of June 30, 2023, by correspondence with the custodian, brokers and agent banks; when replies were not received from brokers and agent banks, we performed other auditing procedures. We believe that our audits provide a reasonable basis for our opinion.
/s/ Deloitte & Touche LLP
Boston, Massachusetts
August 18, 2023
We have served as the auditor of one or more Eaton Vance investment companies since 1959.
45
Eaton Vance
Senior Income Trust
June 30, 2023
Federal Tax Information (Unaudited)
The Form 1099-DIV you receive in February 2024 will show the tax status of all distributions paid to your account in calendar year 2023. Shareholders are advised to consult their own tax adviser with respect to the tax consequences of their investment in the Trust. As required by the Internal Revenue Code and/or regulations, shareholders must be notified regarding the status of qualified dividend income for individuals and 163(j) interest dividends.
Qualified Dividend Income. For the fiscal year ended June 30, 2023, the Fund designates approximately $56,578, or up to the maximum amount of such dividends allowable pursuant to the Internal Revenue Code, as qualified dividend income eligible for the reduced tax rate of 15%.
163(j) Interest Dividends. For the fiscal year ended June 30, 2023, the Trust designates 10.86% of distributions from net investment income as a 163(j) interest dividend.
46
Eaton Vance
Senior Income Trust
June 30, 2023
Dividend Reinvestment Plan
The Trust offers a dividend reinvestment plan (Plan) pursuant to which shareholders automatically have distributions reinvested in common shares (Shares) of the Trust unless they elect otherwise through their investment dealer. On the distribution payment date, if the NAV per Share is equal to or less than the market price per Share plus estimated brokerage commissions, then new Shares will be issued. The number of Shares shall be determined by the greater of the NAV per Share or 95% of the market price. Otherwise, Shares generally will be purchased on the open market by Equiniti Trust Company, LLC, the Plan agent (Agent). Distributions subject to income tax (if any) are taxable whether or not Shares are reinvested.
If your Shares are in the name of a brokerage firm, bank, or other nominee, you can ask the firm or nominee to participate in the Plan on your behalf. If the nominee does not offer the Plan, you will need to request that the Trust's transfer agent re-register your Shares in your name or you will not be able to participate.
The Agent’s service fee for handling distributions will be paid by the Trust. Plan participants will be charged their pro rata share of brokerage commissions on all open-market purchases.
Plan participants may withdraw from the Plan at any time by writing to the Agent at the address noted on the following page. If you withdraw, you will receive Shares in your name for all Shares credited to your account under the Plan. If a participant elects by written notice to the Agent to sell part or all of his or her Shares and remit the proceeds, the Agent is authorized to deduct a $5.00 fee plus brokerage commissions from the proceeds.
If you wish to participate in the Plan and your Shares are held in your own name, you may complete the form on the following page and deliver it to the Agent. Any inquiries regarding the Plan can be directed to the Agent at 1-866-439-6787.
47
Eaton Vance
Senior Income Trust
June 30, 2023
Application for Participation in Dividend Reinvestment Plan
This form is for shareholders who hold their common shares in their own names. If your common shares are held in the name of a brokerage firm, bank, or other nominee, you should contact your nominee to see if it will participate in the Plan on your behalf. If you wish to participate in the Plan, but your brokerage firm, bank, or nominee is unable to participate on your behalf, you should request that your common shares be re-registered in your own name which will enable your participation in the Plan.
The following authorization and appointment is given with the understanding that I may terminate it at any time by terminating my participation in the Plan as provided in the terms and conditions of the Plan.
Please print exact name on account  
 
Shareholder signature Date
 
Shareholder signature Date
Please sign exactly as your common shares are registered. All persons whose names appear on the share certificate must sign.
YOU SHOULD NOT RETURN THIS FORM IF YOU WISH TO RECEIVE YOUR DISTRIBUTIONS IN CASH. THIS IS NOT A PROXY.
This authorization form, when signed, should be mailed to the following address:
Eaton Vance Senior Income Trust
c/o Equiniti Trust Company, LLC
P.O. Box 922
Wall Street Station
New York, NY 10269-0560
48
Eaton Vance
Senior Income Trust
June 30, 2023
Board of Trustees’ Contract Approval
Overview of the Contract Review Process
The Investment Company Act of 1940, as amended (the “1940 Act”), provides, in substance, that the investment advisory agreement between a fund and its investment adviser will continue in effect from year-to-year only if its continuation is approved on an annual basis by a vote of the fund’s board of trustees, including a majority of the trustees who are not “interested persons” of the fund (“independent trustees”), cast in person at a meeting called for the purpose of considering such approval.
At a meeting held on June 8, 2023, the Boards of Trustees/Directors (collectively, the “Board”) that oversee the registered investment companies advised by Eaton Vance Management or its affiliate, Boston Management and Research (the “Eaton Vance Funds”), including a majority of the independent trustees (the “Independent Trustees”), voted to approve the continuation of existing investment advisory agreements and sub-advisory agreements1  for each of the Eaton Vance Funds for an additional one-year period.  The Board relied upon the affirmative recommendation of its Contract Review Committee, which is a committee exclusively comprised of Independent Trustees. Prior to making its recommendation, the Contract Review Committee reviewed information furnished by the adviser and sub-adviser to each of the Eaton Vance Funds (including information specifically requested by the Board) for a series of formal meetings held between April and June 2023, as well as certain additional information provided in response to specific requests from the Independent Trustees as members of the Contract Review Committee. Members of the Contract Review Committee also considered information received at prior meetings of the Board and its committees, to the extent such information was relevant to the Contract Review Committee’s annual evaluation of the investment advisory agreements and sub-advisory agreements.
In connection with its evaluation of the investment advisory agreements and sub-advisory agreements, the Board considered various information relating to the Eaton Vance Funds. This included information applicable to all or groups of Eaton Vance Funds, which is referenced immediately below, and information applicable to the particular Eaton Vance Fund covered by this report (each “Eaton Vance Fund” is referred to below as a “fund”). (For funds that invest through one or more underlying portfolios, references to “each fund” in this section may include information that was considered at the portfolio-level.)
Information about Fees, Performance and Expenses
• A report from an independent data provider comparing advisory and other fees paid by each fund to such fees paid by comparable funds, as identified by the independent data provider (“comparable funds”);
• A report from an independent data provider comparing each fund’s total expense ratio (and its components) to those of comparable funds;
• A report from an independent data provider comparing the investment performance of each fund (including, as relevant, total return data, income data, Sharpe ratios and information ratios) to the investment performance of comparable funds and, as applicable, benchmark indices, over various time periods;
• In certain instances, data regarding investment performance relative to customized groups of peer funds and blended indices identified by the adviser in consultation with the Portfolio Management Committee of the Board (a committee exclusively comprised of Independent Trustees);
•  Comparative information concerning the fees charged and services provided by the adviser and sub-adviser to each fund in managing other accounts (which may include other mutual funds, collective investment funds and institutional accounts) using investment strategies and techniques similar to those used in managing such fund(s), if any;
•  Profitability analyses with respect to the adviser and sub-adviser to each of the funds;
Information about Portfolio Management and Trading
•  Descriptions of the investment management services provided to each fund, as well as each of the funds’ investment strategies and policies;
• The procedures and processes used to determine the value of fund assets, including, when necessary, the determination of “fair value” and actions taken to monitor and test the effectiveness of such procedures and processes;
•  Information about the policies and practices of each fund’s adviser and sub-adviser with respect to trading, including their processes for seeking best execution of portfolio transactions;
•  Information about the allocation of brokerage transactions and the benefits, if any, received by the adviser and sub-adviser to each fund as a result of brokerage allocation, including, as applicable, information concerning the acquisition of research through client commission arrangements and policies with respect to “soft dollars”;
•  Data relating to the portfolio turnover rate of each fund and related information regarding active management in the context of particular strategies;
Information about each Adviser and Sub-adviser
•  Reports detailing the financial results and condition of the adviser and sub-adviser to each fund;
1    Not all Eaton Vance Funds have entered into a sub-advisory agreement with a sub-adviser.  Accordingly, references to “sub-adviser” or “sub-advisory agreement” in this “Overview” section may not be applicable to the particular Eaton Vance Fund covered by this report.
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Eaton Vance
Senior Income Trust
June 30, 2023
Board of Trustees’ Contract Approval — continued
•  Information regarding the individual investment professionals whose responsibilities include portfolio management and investment research for the funds, and, for portfolio managers and certain other investment professionals, information relating to their responsibilities with respect to managing other mutual funds and investment accounts, as applicable;
•  Information regarding the adviser’s and its parent company’s (Morgan Stanley’s) efforts to retain and attract talented investment professionals, including in the context of a competitive marketplace for talent, as well as the ongoing unique environment presented by hybrid, remote and other alternative work arrangements;
•  Information regarding the adviser’s compensation methodology for its investment professionals and the incentives and accountability it creates, along with investment professionals’ investments in the fund(s) they manage;
• The Code of Ethics of the adviser and its affiliates and the sub-adviser of each fund, together with information relating to compliance with, and the administration of, such codes;
•  Policies and procedures relating to proxy voting, including regular reporting with respect to fund proxy voting activities;
•  Information regarding the handling of corporate actions and class actions, as well as information regarding litigation and other regulatory matters;
•  Information concerning the resources devoted to compliance efforts undertaken by the adviser and its affiliates and the sub-adviser of each fund, if any, including descriptions of their various compliance programs and their record of compliance;
•  Information concerning the business continuity and disaster recovery plans of the adviser and its affiliates and the sub-adviser of each fund, if any;
• A description of Eaton Vance Management’s and Boston Management and Research’s oversight of sub-advisers, including with respect to regulatory and compliance issues, investment management and other matters;
Other Relevant Information
•  Information regarding ongoing initiatives to further integrate and harmonize, where applicable, the investment management and other departments of the adviser and its affiliates with the overall investment management infrastructure of Morgan Stanley, in light of Morgan Stanley’s acquisition of Eaton Vance Corp. on March 1, 2021;
•  Information concerning the nature, cost and character of the administrative and other non-investment advisory services provided by Eaton Vance Management and its affiliates;
•  Information concerning oversight of the relationship with the custodian, subcustodians, fund accountants, and other third-party service providers by the adviser and/or administrator to each of the funds;
•  Information concerning efforts to implement policies and procedures with respect to various recently adopted regulations applicable to the funds, including Rule 12d1-4 (the Fund-of-Funds Rule), Rule 18f-4 (the Derivatives Rule) and Rule 2a-5 (the Fair Valuation Rule);
• For an Eaton Vance Fund structured as an exchange-listed closed-end fund, information concerning the benefits of the closed-end fund structure, as well as, where relevant, the closed-end fund’s market prices (including as compared to the closed-end fund’s net asset value (NAV)), trading volume data, continued use of auction preferred shares (where applicable), distribution rates and other relevant matters;
• The risks which the adviser and/or its affiliates incur in connection with the management and operation of the funds, including, among others, litigation, regulatory, entrepreneurial, and other business risks (and the associated costs of such risks); and
• The terms of each investment advisory agreement and sub-advisory agreement.
During the various meetings of the Board and its committees over the course of the year leading up to the June 8, 2023 meeting, the Board received information from portfolio managers and other investment professionals of the advisers and sub-advisers of the funds regarding investment and performance matters, and considered various investment and trading strategies used in pursuing the funds’ investment objectives. The Board also received information regarding risk management techniques employed in connection with the management of the funds. The Board and its committees evaluated issues pertaining to industry and regulatory developments, compliance procedures, fund governance and other issues with respect to the funds, and received and participated in reports and presentations provided by Eaton Vance Management, Boston Management and Research and fund sub-advisers, with respect to such matters. In addition to the formal meetings of the Board and its committees, the Independent Trustees held regular teleconferences to discuss, among other topics, matters relating to the continuation of investment advisory agreements and sub-advisory agreements.
The Contract Review Committee was advised throughout the contract review process by Goodwin Procter LLP, independent legal counsel for the Independent Trustees. The members of the Contract Review Committee, with the advice of such counsel, exercised their own business judgment in determining the material factors to be considered in evaluating each investment advisory agreement and sub-advisory agreement and the weight to be given to each such factor. The conclusions reached with respect to each investment advisory agreement and sub-advisory agreement were based on a comprehensive evaluation of all the information provided and not any single factor. Moreover, each member of the Contract Review Committee may have placed varying emphasis on particular factors in reaching conclusions with respect to each investment advisory agreement and sub-advisory agreement. In evaluating each investment advisory agreement and sub-advisory agreement, including the fee structures and other terms contained in such agreements, the members of the Contract Review Committee were also informed by multiple years of analysis and discussion with the adviser and sub-adviser to each of the Eaton Vance Funds.
50
Eaton Vance
Senior Income Trust
June 30, 2023
Board of Trustees’ Contract Approval — continued
Results of the Contract Review Process
Based on its consideration of the foregoing, and such other information it deemed relevant, including the factors and conclusions described below, the Contract Review Committee concluded that the continuation of the investment advisory agreement between Eaton Vance Senior Income Trust (the “Fund”) and Eaton Vance Management (the “Adviser”), including its fee structure, is in the interests of shareholders and, therefore, recommended to the Board approval of the agreement. Based on the recommendation of the Contract Review Committee, the Board, including a majority of the Independent Trustees, voted to approve continuation of the investment advisory agreement for the Fund.
Nature, Extent and Quality of Services
In considering whether to approve the investment advisory agreement for the Fund, the Board evaluated the nature, extent and quality of services provided to the Fund by the Adviser.
The Board considered the Adviser’s management capabilities and investment processes in light of the types of investments held by the Fund, including the education, experience and number of investment professionals and other personnel who provide portfolio management, investment research, and similar services to the Fund, including recent changes to such personnel.  In particular, the Board considered the abilities and experience of the Adviser’s investment professionals in analyzing special considerations relevant to investing in senior floating rate loans. Specifically, the Board noted the experience of the Adviser’s large group of bank loan investment professionals and other personnel who provide services to the Fund, including portfolio managers and analysts. The Board also took into account the resources dedicated to portfolio management and other services, the compensation methods of the Adviser and other factors, including the reputation and resources of the Adviser to recruit and retain highly qualified research, advisory and supervisory investment professionals. In addition, the Board considered the time and attention devoted to the Eaton Vance Funds, including the Fund, by senior management, as well as the infrastructure, operational capabilities and support staff in place to assist in the portfolio management and operations of the Fund, including the provision of administrative services. The Board also considered the business-related and other risks to which the Adviser or its affiliates may be subject in managing the Fund. The Board considered the deep experience of the Adviser and its affiliates with managing and operating funds organized as exchange-listed closed-end funds, such as the Fund. In this regard, the Board considered, among other things, the Adviser’s and its affiliates’ experience with implementing leverage arrangements, monitoring and assessing trading price discounts and premiums and adhering to the requirements of securities exchanges.
The Board considered the compliance programs of the Adviser and relevant affiliates thereof. The Board considered compliance and reporting matters regarding, among other things, personal trading by investment professionals, disclosure of portfolio holdings, portfolio valuation, business continuity and the allocation of investment opportunities. The Board also considered the responses of the Adviser and its affiliates to requests in recent years from regulatory authorities, such as the Securities and Exchange Commission and the Financial Industry Regulatory Authority.
The Board considered other administrative services provided or overseen by Eaton Vance Management and its affiliates, including transfer agency and accounting services. The Board evaluated the benefits to shareholders of investing in a fund that is a part of a large fund complex offering exposure to a variety of asset classes and investment disciplines.
After consideration of the foregoing factors, among others, the Board concluded that the nature, extent and quality of services provided by the Adviser, taken as a whole, are appropriate and consistent with the terms of the investment advisory agreement.
Fund Performance
The Board compared the Fund’s investment performance to that of comparable funds identified by an independent data provider (the peer group), as well as an appropriate benchmark index and a custom peer group of similarly managed funds. The Board’s review included comparative performance data with respect to the Fund for the one-, three-, five- and ten-year periods ended December 31, 2022. In this regard, the Board noted that the performance of the Fund was consistent with the median performance of the Fund’s peer group and custom peer group for the three-year period. The Board also noted that the performance of the Fund was lower than its benchmark index for the three-year period. The Board concluded that the performance of the Fund was satisfactory.
Management Fees and Expenses
The Board considered contractual fee rates payable by the Fund for advisory and administrative services (referred to collectively as “management fees”). As part of its review, the Board considered the Fund’s management fees and total expense ratio for the one-year period ended December 31, 2022, as compared to those of comparable funds, before and after giving effect to any undertaking to waive fees or reimburse expenses. The Board also considered certain Fund specific factors that had an impact on the Fund’s total expense ratio relative to comparable funds, as identified by management in response to inquiries from the Contract Review Committee. Additionally, the Board took into account the financial resources committed by the Adviser in structuring the Fund at the time of its initial public offering and the waiver of fees provided by the Adviser for the first five years of the Fund’s life. The Board also considered that, following discussions with the Contract Review Committee, the Adviser had implemented a series of permanent reductions in management fees beginning in May 2010, which included a further fee reduction effective May 1, 2023.
After considering the foregoing information, and in light of the nature, extent and quality of the services provided by the Adviser, the Board concluded that the management fees charged for advisory and related services are reasonable.
51
Eaton Vance
Senior Income Trust
June 30, 2023
Board of Trustees’ Contract Approval — continued
Profitability and “Fall-Out” Benefits
The Board considered the level of profits realized by the Adviser and relevant affiliates thereof in providing investment advisory and administrative services to the Fund and to all Eaton Vance Funds as a group. The Board considered the level of profits realized without regard to marketing support or other payments by the Adviser and its affiliates to third parties in respect of distribution or other services.
The Board concluded that, in light of the foregoing factors and the nature, extent and quality of the services rendered, the profits realized by the Adviser and its affiliates are deemed not to be excessive.
The Board also considered direct or indirect fall-out benefits received by the Adviser and its affiliates in connection with their respective relationships with the Fund, including the benefits of research services that may be available to the Adviser as a result of securities transactions effected for the Fund and other investment advisory clients.
Economies of Scale
In reviewing management fees and profitability, the Board also considered the extent to which the Adviser and its affiliates, on the one hand, and the Fund, on the other hand, can expect to realize benefits from economies of scale as the assets of the Fund increase. The Board acknowledged the difficulty in accurately measuring the benefits resulting from economies of scale, if any, with respect to the management of any specific fund or group of funds. The Board reviewed data summarizing the increases and decreases in the assets of the Fund and of all Eaton Vance Funds as a group over various time periods, and evaluated the extent to which the total expense ratio of the Fund and the profitability of the Adviser and its affiliates may have been affected by such increases or decreases. Based upon the foregoing, the Board concluded that the Fund currently shares in the benefits from economies of scale, if any, when they are realized by the Adviser. The Board also considered the fact that the Fund is not continuously offered in the same manner as an open-end fund and that, notwithstanding that the Fund is authorized to issue additional common shares through a shelf offering, the Fund’s assets are not expected to increase materially in the foreseeable future. The Board did not find that the implementation of breakpoints in the advisory fee schedule is warranted at this time.
52
Eaton Vance
Senior Income Trust
June 30, 2023
Management and Organization
Fund Management.  The Board of Trustees of the Fund (the “Board”) is responsible for the overall management and supervision of the affairs of the Fund. The Board members and officers of the Fund are listed below. Except as indicated, each individual has held the office shown or other offices in the same company for the last five years. Each Trustee holds office until the annual meeting for the year in which his or her term expires and until his or her successor is elected and qualified, subject to a prior death, resignation, retirement, disqualification or removal. Under the terms of the Fund’s current Trustee retirement policy, an Independent Trustee must retire and resign as a Trustee on the earlier of: (i) the first day of July following his or her 74th birthday; or (ii), with limited exception, December 31st of the 20th year in which he or she has served as a Trustee. However, if such retirement and resignation would cause the Fund to be out of compliance with Section 16 of the 1940 Act or any other regulations or guidance of the Securities and Exchange Commission, then such retirement and resignation will not become effective until such time as action has been taken for the Fund to be in compliance therewith. The “noninterested Trustees” consist of those Trustees who are not “interested persons” of the Fund, as that term is defined under the 1940 Act. The business address of each Board member and officer is Two International Place, Boston, Massachusetts 02110. As used below, “BMR” refers to Boston Management and Research, “EV” refers to EV LLC, “EVM” refers to Eaton Vance Management, "MSIM" refers to Morgan Stanley Investment Management, Inc. and “EVD” refers to Eaton Vance Distributors, Inc. EV is the trustee of each of EVM and BMR. Each of EVM, BMR, EVD and EV are indirect, wholly-owned subsidiaries of Morgan Stanley. Each officer affiliated with EVM may hold a position with other EVM affiliates that is comparable to his or her position with EVM listed below. Each Trustee oversees 129 funds in the Eaton Vance fund complex (including both funds and portfolios in a hub and spoke structure). 
Name and Year of Birth Fund
Position(s) 		Length of Service Principal Occupation(s) and Other Directorships
During Past Five Years and Other Relevant Experience
Interested Trustees 
Anchal Pachnanda(1)
1980 		Class II
Trustee 		Until 2024.
3 years.
Since 2023. 		Co-Head of Strategy of MSIM (since 2019). Formerly, Head of Strategy of MSIM (2017-2019). Ms. Pachnanda is an interested person because of her position with MSIM, which is an affiliate of the Fund.
Other Directorships. None.
Noninterested Trustees 
Alan C. Bowser(2)
1962 		Class III
Trustee 		Until 2025.
3 years.
Since 2023. 		Formerly, Chief Diversity Officer, Partner and a member of the Operating Committee, and formerly served as Senior Advisor on Diversity and Inclusion for the firm’s chief executive officer, Co-Head of the Americas Region, and Senior Client Advisor of Bridgewater Associates, an asset management firm (2011- 2023).
Other Directorships. Independent Director of Stout Risius Ross (a middle market professional services advisory firm) (since 2021).
Mark R. Fetting
1954 		Class II
Trustee 		Until 2024.
3 years.
Since 2016. 		Private investor. Formerly held various positions at Legg Mason, Inc. (investment management firm) (2000-2012), including President, Chief Executive Officer, Director and Chairman (2008-2012), Senior Executive Vice President (2004-2008) and Executive Vice President (2001-2004). Formerly, President of Legg Mason family of funds (2001-2008). Formerly, Division President and Senior Officer of Prudential Financial Group, Inc. and related companies (investment management firm) (1991-2000).
Other Directorships. None.
Cynthia E. Frost
1961 		Class I
Trustee 		Until 2026.
3 years.
Since 2014. 		Private investor. Formerly, Chief Investment Officer of Brown University (university endowment) (2000-2012). Formerly, Portfolio Strategist for Duke Management Company (university endowment manager) (1995-2000). Formerly, Managing Director, Cambridge Associates (investment consulting company) (1989-1995). Formerly, Consultant, Bain and Company (management consulting firm) (1987-1989). Formerly, Senior Equity Analyst, BA Investment Management Company (1983-1985).
Other Directorships. None.
George J. Gorman
1952 		Chairperson
of the Board
and Class III
Trustee 		Until 2025.
3 years. Chairperson of the Board since 2021 and Trustee since 2014. 		Principal at George J. Gorman LLC (consulting firm). Formerly, Senior Partner at Ernst & Young LLP (a registered public accounting firm) (1974-2009).
Other Directorships. None.
53
Eaton Vance
Senior Income Trust
June 30, 2023
Management and Organization — continued
Name and Year of Birth Fund
Position(s) 		Length of Service Principal Occupation(s) and Other Directorships
During Past Five Years and Other Relevant Experience
Noninterested Trustees (continued)
Valerie A. Mosley(3)
1960 		Class I
Trustee 		Until 2026.
3 years.
Since 2014. 		Chairwoman and Chief Executive Officer of Valmo Ventures (a consulting and investment firm). Founder of Upward Wealth, Inc., dba BrightUp, a fintech platform. Formerly, Partner and Senior Vice President, Portfolio Manager and Investment Strategist at Wellington Management Company, LLP (investment management firm) (1992-2012). Formerly, Chief Investment Officer, PG Corbin Asset Management (1990-1992). Formerly worked in institutional corporate bond sales at Kidder Peabody (1986-1990).
Other Directorships. Director of DraftKings, Inc. (digital sports entertainment and gaming company) (since September 2020). Director of Envestnet, Inc. (provider of intelligent systems for wealth management and financial wellness) (since 2018). Formerly, Director of Dynex Capital, Inc. (mortgage REIT) (2013-2020) and Director of Groupon, Inc. (e-commerce provider) (2020-2022).
Keith Quinton
1958 		Class II
Trustee 		Until 2024.
3 years.
Since 2018. 		Private investor, researcher and lecturer. Formerly, Independent Investment Committee Member at New Hampshire Retirement System (2017-2021). Formerly, Portfolio Manager and Senior Quantitative Analyst at Fidelity Investments (investment management firm) (2001-2014).
Other Directorships. Formerly, Director (2016-2021) and Chairman (2019-2021) of New Hampshire Municipal Bond Bank.
Marcus L. Smith
1966 		Class III
Trustee 		Until 2025.
3 years.
Since 2018. 		Private investor and independent corporate director. Formerly, Chief Investment Officer, Canada (2012-2017), Chief Investment Officer, Asia (2010-2012), Director of Asian Research (2004-2010) and portfolio manager (2001-2017) at MFS Investment Management (investment management firm).
Other Directorships. Director of First Industrial Realty Trust, Inc. (an industrial REIT) (since 2021). Director of MSCI Inc. (global provider of investment decision support tools) (since 2017). Formerly, Director of DCT Industrial Trust Inc. (logistics real estate company) (2017-2018).
Susan J. Sutherland
1957 		Class I
Trustee 		Until 2026.
3 years.
Since 2015. 		Private investor. Director of Ascot Group Limited and certain of its subsidiaries (insurance and reinsurance) (since 2017). Formerly, Director of Hagerty Holding Corp. (insurance) (2015-2018) and Montpelier Re Holdings Ltd. (insurance and reinsurance) (2013-2015). Formerly, Associate, Counsel and Partner at Skadden, Arps, Slate, Meagher & Flom LLP (law firm) (1982-2013).
Other Directorships. Formerly, Director of Kairos Acquisition Corp. (insurance/InsurTech acquisition company) (2021-2023).
Scott E. Wennerholm
1959 		Class II
Trustee 		Until 2024.
3 years.
Since 2016. 		Private investor. Formerly, Trustee at Wheelock College (postsecondary institution) (2012-2018). Formerly, Consultant at GF Parish Group (executive recruiting firm) (2016-2017). Formerly, Chief Operating Officer and Executive Vice President at BNY Mellon Asset Management (investment management firm) (2005-2011). Formerly, Chief Operating Officer and Chief Financial Officer at Natixis Global Asset Management (investment management firm) (1997-2004). Formerly, Vice President at Fidelity Investments Institutional Services (investment management firm) (1994-1997).
Other Directorships. None.
Nancy A. Wiser
1967(3) 		Class III
Trustee 		Until 2025.
3 years.
Since 2022. 		Formerly, Executive Vice President and the Global Head of Operations at Wells Fargo Asset Management (2011-2021).
Other Directorships. None.
    
Name and Year of Birth Fund
Position(s) 		Length of Service Principal Occupation(s)
During Past Five Years
Principal Officers who are not Trustees 
Eric A. Stein
1980 		President Since 2020 Vice President and Chief Investment Officer, Fixed Income of EVM and BMR. Prior to November 1, 2020, Mr. Stein was a co-Director of Eaton Vance’s Global Income Investments. Also Vice President of Calvert Research and Management (“CRM”).
Deidre E. Walsh
1971 		Vice President and Chief
Legal Officer 		Since 2009 Vice President of EVM and BMR. Also Vice President of CRM.
James F. Kirchner
1967 		Treasurer Since 2007 Vice President of EVM and BMR. Also Vice President of CRM.
54
Eaton Vance
Senior Income Trust
June 30, 2023
Management and Organization — continued
Name and Year of Birth Fund
Position(s) 		Length of Service Principal Occupation(s)
During Past Five Years
Principal Officers who are not Trustees (continued)
Nicholas S. Di Lorenzo
1987 		Secretary Since 2022 Formerly, associate (2012-2021) and counsel (2022) at Dechert LLP.
Richard F. Froio
1968 		Chief Compliance
Officer 		Since 2017 Vice President of EVM and BMR since 2017. Formerly, Deputy Chief Compliance Officer (Adviser/Funds) and Chief Compliance Officer (Distribution) at PIMCO (2012-2017) and Managing Director at BlackRock/Barclays Global Investors (2009-2012).
(1)  Ms. Pachnanda began serving as Trustee effective April 1, 2023.
(2)  Mr. Bowser began serving as Trustee effective January 4, 2023.
(3)  Preferred shares Trustee.
55
Eaton Vance Funds
Privacy Notice April 2021
FACTS WHAT DOES EATON VANCE DO WITH YOUR
PERSONAL INFORMATION?
Why?  Financial companies choose how they share your personal information. Federal law gives consumers the right to limit some but not all sharing. Federal law also requires us to tell you how we collect, share, and protect your personal information. Please read this notice carefully to understand what we do. 
What?  The types of personal information we collect and share depend on the product or service you have with us. This information can include:
■ Social Security number and income
■ investment experience and risk tolerance
■ checking account number and wire transfer instructions 
How?  All financial companies need to share customers’ personal information to run their everyday business. In the section below, we list the reasons financial companies can share their customers’ personal information; the reasons Eaton Vance chooses to share; and whether you can limit this sharing. 
Reasons we can share your
personal information 		Does Eaton Vance
share? 		Can you limit
this sharing?
For our everyday business purposes — such as to process your transactions, maintain your account(s), respond to court orders and legal investigations, or report to credit bureaus Yes No
For our marketing purposes — to offer our products and services to you Yes No
For joint marketing with other financial companies No We don’t share
For our investment management affiliates’ everyday business purposes — information about your transactions, experiences, and creditworthiness Yes Yes
For our affiliates’ everyday business purposes — information about your transactions and experiences Yes No
For our affiliates’ everyday business purposes — information about your creditworthiness No We don’t share
For our investment management affiliates to market to you Yes Yes
For our affiliates to market to you No We don’t share
For nonaffiliates to market to you No We don’t share
To limit our
sharing  		Call toll-free 1-800-262-1122 or email: EVPrivacy@eatonvance.com
Please note:
If you are a new customer, we can begin sharing your information 30 days from the date we sent this notice. When you are no longer our customer, we continue to share your information as described in this notice. However, you can contact us at any time to limit our sharing. 
Questions?  Call toll-free 1-800-262-1122 or email: EVPrivacy@eatonvance.com 
56
Eaton Vance Funds
Privacy Notice — continued April 2021
Page 2
Who we are
Who is providing this notice? Eaton Vance Management, Eaton Vance Distributors, Inc., Eaton Vance Trust Company, Eaton Vance Management (International) Limited, Eaton Vance Advisers International Ltd., Eaton Vance Global Advisors Limited, Eaton Vance Management’s Real Estate Investment Group, Boston Management and Research, Calvert Research and Management, Eaton Vance and Calvert Fund Families and our investment advisory affiliates (“Eaton Vance”) (see Investment Management Affiliates definition below)
What we do
How does Eaton Vance
protect my personal
information? 		To protect your personal information from unauthorized access and use, we use security measures that comply with federal law. These measures include computer safeguards and secured files and buildings. We have policies governing the proper handling of customer information by personnel and requiring third parties that provide support to adhere to appropriate security standards with respect to such information.
How does Eaton Vance
collect my personal
information? 		We collect your personal information, for example, when you
■ open an account or make deposits or withdrawals from your account
■ buy securities from us or make a wire transfer
■ give us your contact information
We also collect your personal information from others, such as credit bureaus, affiliates, or other companies.
Why can’t I limit all sharing? Federal law gives you the right to limit only
■ sharing for affiliates’ everyday business purposes — information about your creditworthiness
■ affiliates from using your information to market to you
■ sharing for nonaffiliates to market to you
State laws and individual companies may give you additional rights to limit sharing. See below for more on your rights under state law.
Definitions
Investment Management
Affiliates 		Eaton Vance Investment Management Affiliates include registered investment advisers, registered broker- dealers, and registered and unregistered funds. Investment Management Affiliates does not include entities associated with Morgan Stanley Wealth Management, such as Morgan Stanley Smith Barney LLC and Morgan Stanley & Co.
Affiliates Companies related by common ownership or control. They can be financial and nonfinancial companies.
■ Our affiliates include companies with a Morgan Stanley name and financial companies such as Morgan Stanley Smith Barney LLC and Morgan Stanley & Co.
Nonaffiliates Companies not related by common ownership or control. They can be financial and nonfinancial companies.
■ Eaton Vance does not share with nonaffiliates so they can market to you.
Joint marketing A formal agreement between nonaffiliated financial companies that together market financial products or services to you.
■ Eaton Vance doesn’t jointly market.
Other important information
Vermont: Except as permitted by law, we will not share personal information we collect about Vermont residents with Nonaffiliates unless you provide us with your written consent to share such information.
California: Except as permitted by law, we will not share personal information we collect about California residents with Nonaffiliates and we will limit sharing such personal information with our Affiliates to comply with California privacy laws that apply to us.
57
Eaton Vance Funds
IMPORTANT NOTICES
Delivery of Shareholder Documents. The Securities and Exchange Commission (SEC) permits funds to deliver only one copy of shareholder documents, including prospectuses, proxy statements and shareholder reports, to fund investors with multiple accounts at the same residential or post office box address. This practice is often called “householding” and it helps eliminate duplicate mailings to shareholders. Equiniti Trust Company, LLC (“EQ”), the closed-end funds transfer agent, or your financial intermediary, may household the mailing of your documents indefinitely unless you instruct EQ, or your financial intermediary, otherwise.If you would prefer that your Eaton Vance documents not be householded, please contact EQ or your financial intermediary. Your instructions that householding not apply to delivery of your Eaton Vance documents will typically be effective within 30 days of receipt by EQ or your financial intermediary.
Portfolio Holdings. Each Eaton Vance Fund and its underlying Portfolio(s) (if applicable) files a schedule of portfolio holdings on Part F to Form N-PORT with the SEC. Certain information filed on Form N-PORT may be viewed on the Eaton Vance website at www.eatonvance.com, by calling Eaton Vance at 1-800-262-1122 or in the EDGAR database on the SEC’s website at www.sec.gov.
Proxy Voting. From time to time, funds are required to vote proxies related to the securities held by the funds. The Eaton Vance Funds or their underlying Portfolios (if applicable) vote proxies according to a set of policies and procedures approved by the Funds’ and Portfolios’ Boards. You may obtain a description of these policies and procedures and information on how the Funds or Portfolios voted proxies relating to portfolio securities during the most recent 12-month period ended June 30, without charge, upon request, by calling 1-800-262-1122 and by accessing the SEC’s website at www.sec.gov.
Share Repurchase Program. The Fund’s Board of Trustees has approved a share repurchase program authorizing the Fund to repurchase up to 10% of its common shares outstanding as of the last day of the prior calendar year in open-market transactions at a discount to net asset value. The repurchase program does not obligate the Fund to purchase a specific amount of shares. The Fund’s repurchase activity, including the number of shares purchased, average price and average discount to net asset value, is disclosed in the Fund’s annual and semi-annual reports to shareholders.
Additional Notice to Shareholders. If applicable, a Fund may also redeem or purchase its outstanding preferred shares in order to maintain compliance with regulatory requirements, borrowing or rating agency requirements or for other purposes as it deems appropriate or necessary.
Closed-End Fund Information. Eaton Vance closed-end funds make fund performance data and certain information about portfolio characteristics available on the Eaton Vance website shortly after the end of each month. Other information about the funds is available on the website. The funds’ net asset value per share is readily accessible on the Eaton Vance website. Portfolio holdings for the most recent month-end are also posted to the website approximately 30 days following the end of the month. This information is available at www.eatonvance.com on the fund information pages under “Closed-End Funds & Term Trusts.”
58
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Investment Adviser and Administrator
Eaton Vance Management
Two International Place
Boston, MA 02110
Custodian
State Street Bank and Trust Company
One Congress Street, Suite 1
Boston, MA 02114-2016
Transfer Agent
Equiniti Trust Company, LLC
6201 15th Avenue
Brooklyn, NY 11219
Independent Registered  Public Accounting Firm
Deloitte & Touche LLP
200 Berkeley Street
Boston, MA 02116-5022
Fund Offices
Two International Place
Boston, MA 02110
171    6.30.23

Item 2. Code of Ethics

The registrant (sometimes referred to as the “Fund”) has adopted a code of ethics applicable to its Principal Executive Officer, Principal Financial Officer and Principal Accounting Officer. The registrant undertakes to provide a copy of such code of ethics to any person upon request, without charge, by calling 1-800-262-1122. The registrant has not amended the code of ethics as described in Form N-CSR during the period covered by this report. The registrant has not granted any waiver, including an implicit waiver, from a provision of the code of ethics as described in Form N-CSR during the period covered by this report.

Item 3. Audit Committee Financial Expert

The registrant’s Board of Trustees (the “Board”) has designated George J. Gorman and Scott E. Wennerholm, each an independent trustee, as audit committee financial experts. Mr. Gorman is a certified public accountant who is the Principal at George J. Gorman LLC (a consulting firm). Previously, Mr. Gorman served in various capacities at Ernst & Young LLP (a registered public accounting firm), including as Senior Partner. Mr. Gorman also has experience serving as an independent trustee and audit committee financial expert of other

mutual fund complexes. Mr. Wennerholm is a private investor. Previously, Mr. Wennerholm served as a Trustee at Wheelock College (postsecondary institution), as a Consultant at GF Parish Group (executive recruiting firm), Chief Operating Officer and Executive Vice President at BNY Mellon Asset Management (investment management firm), Chief Operating Officer and Chief Financial Officer at Natixis Global Asset Management (investment management firm), and Vice President at Fidelity Investments Institutional Services (investment management firm).

Item 4. Principal Accountant Fees and Services

(a)-(d)

The following table presents the aggregate fees billed to the registrant for the registrant’s fiscal years ended June 30, 2022 and June 30, 2023 by the registrant’s principal accountant, Deloitte & Touche LLP (“D&T”), for professional services rendered for the audit of the registrant’s annual financial statements and fees billed for other services rendered by D&T during such periods.

Eaton Vance Senior Income Trust

 

Fiscal Years Ended

    06/30/22      06/30/23  

Audit Fees

    $ 88,650      $ 81,500  

Audit-Related Fees(1)

    $ 20,000      $ 0  

Tax Fees(2)

    $ 350      $ 0  

All Other Fees(3)

    $ 0      $ 0  
  

 

 

     

 

 

  

Total

    $ 109,000      $ 81,500  
  

 

 

     

 

 

  

 

(1) 

Audit-related fees consist of the aggregate fees billed for assurance and related services that are reasonably related to the performance of the audit of the registrant’s financial statements and are not reported under the category of audit fees and specifically includes fees for the performance of certain agreed upon procedures relating to the registrant’s revolving credit agreement.

(2) 

Tax fees consist of the aggregate fees billed for professional services rendered by the principal accountant relating to tax compliance, tax advice, and tax planning and specifically include fees for tax return preparation and other related tax compliance/planning matters.

(3)

All other fees consist of the aggregate fees billed for products and services provided by the registrant’s principal accountant other than audit, audit-related, and tax services.

(e)(1) The registrant’s audit committee has adopted policies and procedures relating to the pre-approval of services provided by the registrant’s principal accountant (the “Pre-Approval Policies”). The Pre-Approval Policies establish a framework intended to assist the audit committee in the proper discharge of its pre-approval responsibilities. As a general matter, the Pre-Approval Policies (i) specify certain types of audit, audit-related, tax, and other services determined to be pre-approved by the audit committee; and (ii) delineate specific procedures governing the mechanics of the pre-approval process, including the approval and monitoring of audit and non-audit service fees. Unless a service is specifically pre-approved under the Pre-Approval Policies, it must be separately pre-approved by the audit committee.

The Pre-Approval Policies and the types of audit and non-audit services pre-approved therein must be reviewed and ratified by the registrant’s audit committee at least annually. The registrant’s audit committee maintains full responsibility for the appointment, compensation, and oversight of the work of the registrant’s principal accountant.

(e)(2) No services described in paragraphs (b)-(d) above were approved by the registrant’s audit committee pursuant to the “de minimis exception” set forth in Rule 2-01 (c)(7)(i)(C) of Regulation

S-X.

(f) Not applicable.

(g) The following table presents (i) the aggregate non-audit fees (i.e., fees for audit-related, tax, and other services) billed to the registrant by D&T for the registrant’s fiscal years ended June 30, 2022 and June 30, 2023; and (ii) the aggregate non-audit fees (i.e., fees for audit-related, tax, and other services) billed to the Eaton Vance organization by D&T for the same time periods.

 

Fiscal Years Ended

    06/30/22      06/30/23  

Registrant

    $ 350      $ 0  

Eaton Vance(1)

    $ 0      $ 0  

 

(1)

The investment adviser to the registrant, as well as any of its affiliates that provide ongoing services to the registrant, are subsidiaries of Morgan Stanley.

(h) The registrant’s audit committee has considered whether the provision by the registrant’s principal accountant of non-audit services to the registrant’s investment adviser and any entity controlling, controlled by, or under common control with the adviser that provides ongoing services to the registrant that were not pre-approved pursuant to Rule 2-01(c)(7)(ii) of Regulation S-X is compatible with maintaining the principal accountant’s independence.

(i) Not applicable.

(j) Not applicable.

Item 5. Audit Committee of Listed registrants

The registrant has a separately-designated standing audit committee established in accordance with Section 3(a)(58)(A) of the Securities and Exchange Act of 1934, as amended. George J. Gorman, Keith Quinton, Scott E. Wennerholm (Chair), and Nancy A. Wiser are the members of the registrant’s audit committee.

Item 6. Schedule of Investments

Please see schedule of investments contained in the Report to Stockholders included under Item 1 of this Form N-CSR.

Item 7. Disclosure of Proxy Voting Policies and Procedures for Closed-End Management Investment Companies

The Board of the Fund has adopted a proxy voting policy and procedure (the “Fund Policy”), pursuant to which the trustees have delegated proxy voting responsibility to the Fund’s investment adviser and adopted the investment adviser’s proxy voting policies and procedures (the “Policies”) which are described below. The trustees will review the Policies annually. In the event that a conflict of interest arises between the Fund’s shareholders and the investment adviser, the administrator, or any of their affiliates or any affiliate of the Fund, the investment adviser will generally refrain from voting the proxies related to the companies giving rise to such conflict until it consults with the Board, or any committee, sub-committee or group of independent trustees identified by the Board, which will instruct the investment adviser on the appropriate course of action. If the Board Members are unable to meet and the failure to vote a proxy would have a material adverse impact on the Fund, the investment adviser may vote such proxy, provided that it discloses the existence of the material conflict to the Chairperson of the Fund’s Board as soon as practicable and to the Board at its next meeting.

The Policies are designed to promote accountability of a company’s management to its shareholders and to align the interests of management with those shareholders. An independent proxy voting service (“Agent”), currently Institutional Shareholder Services, Inc., has been retained to assist in the voting of proxies through the provision of vote analysis, implementation and recordkeeping and disclosure services. The investment adviser will generally vote proxies through the Agent. The Agent is required to vote all proxies in accordance with customized proxy voting guidelines (the “Guidelines”) and/or refer them back to the investment adviser pursuant to the Policies.

The Agent is required to establish and maintain adequate internal controls and policies in connection with the provision of proxy voting services, including methods to reasonably ensure that its analysis and recommendations are not influenced by a conflict of interest. The Guidelines include voting guidelines for matters relating to, among other things, the election of directors, approval of independent auditors, executive compensation, corporate structure and anti-takeover defenses. The investment adviser may cause the Fund to abstain from voting from time to time where it determines that the costs associated with voting a proxy outweigh the benefits derived from exercising the right to vote or it is unable to access or access timely ballots or other proxy information, among other stated reasons. The Agent will refer Fund proxies to the investment adviser for instructions under circumstances where, among others: (1) the application of the Guidelines is unclear; (2) a particular proxy question is not covered by the Guidelines; or (3) the Guidelines require input from the investment adviser. When a proxy voting issue has been referred to the investment adviser, the analyst (or portfolio manager if applicable) covering the company subject to the proxy proposal determines the final vote (or decision not to vote) and the investment adviser’s Proxy Administrator (described below) instructs the Agent to vote accordingly for securities held by the Fund. Where more than one analyst covers a particular company and the recommendations of such analysts voting a proposal conflict, the investment adviser’s Global Proxy Group (described below) will review such recommendations and any other available information related to the proposal and determine the manner in which it should be voted, which may result in different recommendations for the Fund that may differ from other clients of the investment adviser.

The investment adviser has appointed a Proxy Administrator to assist in the coordination of the voting of client proxies (including the Fund’s) in accordance with the Guidelines and the Policies. The investment adviser and its affiliates have also established a Global Proxy Group. The Global Proxy Group develops the investment adviser’s positions on all major corporate issues, creates the Guidelines and oversees the proxy voting process. The Proxy Administrator maintains a record of all proxy questions that have been referred by the Agent, all applicable recommendations, analysis and research received and any resolution of the matter. Before instructing the Agent to vote contrary to the Guidelines or the recommendation of the Agent, the Proxy Administrator will provide the Global Proxy Group with the Agent’s recommendation for the proposal along with any other relevant materials, including the basis for the analyst’s recommendation. The Proxy Administrator will then instruct the Agent to vote the proxy in the manner determined by the Global Proxy Group. A similar process will be followed if the Agent has a conflict of interest with respect to a proxy. The investment adviser will report to the Fund’s Board any votes cast contrary to the Guidelines or Agent recommendations, as applicable, no less than annually.

The investment adviser’s Global Proxy Group is responsible for monitoring and resolving possible material conflicts with respect to proxy voting. Because the Guidelines are predetermined and designed to be in the best interests of shareholders, application of the Guidelines to vote client proxies should, in most cases, adequately address any possible conflict of interest. The investment adviser will monitor situations that may result in a conflict of interest between any of its clients and the investment adviser or any of its affiliates by maintaining a list of significant existing and prospective corporate clients. The Proxy Administrator will compare such list with the names of companies of which he or she has been referred a proxy statement (the “Proxy Companies”). If a company on the list is also a Proxy Company, the Proxy Administrator will report that fact to the Global

Proxy Group. If the Proxy Administrator intends to instruct the Agent to vote in a manner inconsistent with the Guidelines, the Global Proxy Group will first determine, in consultation with legal counsel if necessary, whether a material conflict exists. If it is determined that a material conflict exists, the investment adviser will seek instruction on how the proxy should be voted from the Fund’s Board, or any committee or subcommittee identified by the Board. If a matter is referred to the Global Proxy Group, the decision made and basis for the decision will be documented by the Proxy Administrator and/or Global Proxy Group.

Information on how the Fund voted proxies relating to portfolio securities during the most recent 12 month period ended June 30 is available (1) without charge, upon request, by calling 1-800-262-1122, and (2) on the Securities and Exchange Commission’s website at http://www.sec.gov.

Item 8. Portfolio Managers of Closed-End Management Investment Companies

Eaton Vance Management (“EVM” or “Eaton Vance”) is the investment adviser of the Trust. Sarah A. Choi, Catherine C. McDermott, Daniel P. McElaney, John P. Redding and Andrew N. Sveen comprise the investment team responsible for the overall and day-to-day management of the Trust’s investments.

Mr. Redding is a Vice President of EVM and has been a portfolio manager of the Trust since November 2001. Messrs. McElaney and Sveen and Ms. McDermott are Vice Presidents of EVM and have been portfolio managers of the Trust since March 2019. Ms. Choi is a Vice President of EVM and has been a portfolio manager of the Trust since July 2022. Messrs. McElaney, Redding and Sveen and Ms. McDermott have been employed by EVM for more than five years and manage other Eaton Vance funds. Ms. Choi has been employed by EVM since October 2019 and manages other Eaton Vance funds. Prior to joining EVM, Ms. Choi worked as a Senior Credit Analyst at Apex Credit Partners from 2014 to 2019. This information is provided as of the date of filing this report.

The following table shows, as of the Trust’s most recent fiscal year end, the number of accounts each portfolio manager managed in each of the listed categories and the total assets (in millions of dollars) in the accounts managed within each category. The table also shows the number of accounts with respect to which the advisory fee is based on the performance of the account, if any, and the total assets (in millions of dollars) in those accounts.

 

     Number
of All
Accounts		      Total Assets of
All
Accounts		      Number of
Accounts
Paying a
Performance Fee		      Total Assets of
Accounts Paying a
Performance Fee		  

Sarah A. Choi

            

Registered Investment Companies

      3      $ 1,382.1        0      $ 0  

Other Pooled Investment Vehicles

      0      $ 0        0      $ 0  

Other Accounts

      0      $ 0        0      $ 0  

Catherine C. McDermott

            

Registered Investment Companies

      6      $ 3,682.6        0      $ 0  

Other Pooled Investment Vehicles

      0      $ 0        0      $ 0  

Other Accounts

      0      $ 0        0      $ 0  

Daniel P. McElaney

            

Registered Investment Companies

      4      $ 1,862.1        0      $ 0  

Other Pooled Investment Vehicles

      0      $ 0        0      $ 0  

Other Accounts

      0      $ 0        0      $ 0  

Andrew N. Sveen(1)

            

Registered Investment Companies

      11      $ 26,676.4        0      $ 0  

Other Pooled Investment Vehicles

      0      $ 0        0      $ 0  

Other Accounts

      0      $ 0        0      $ 0  

 

(1) 

This portfolio manager serves as portfolio manager of one or more registered investment companies that invests or may invest in one or more underlying registered investment companies in the Eaton Vance family of funds or other pooled investment vehicles sponsored by Eaton Vance. The underlying investment companies may be managed by this portfolio manager or another portfolio manager.

The following table shows the dollar range of Trust shares beneficially owned by each portfolio manager as of the Trust’s most recent fiscal year end.

 

Portfolio Manager

    Dollar Range of Equity
Securities Beneficially Owned
in the Trust

Sarah A. Choi

    None

Catherine C. McDermott

    None

Daniel P. McElaney

    None

Andrew N. Sveen

    None

Potential for Conflicts of Interest. It is possible that conflicts of interest may arise in connection with a portfolio manager’s management of the Fund’s investments on the one hand and the investments of other accounts for which a portfolio manager is responsible on the other. For example, a portfolio manager may have conflicts of interest in allocating management time, resources and investment opportunities among the Fund and other accounts he or she advises. In addition, due to differences in the investment strategies or restrictions between the Fund and the other accounts, the portfolio manager may take action with respect to another account that differs from the action taken with respect to the Fund. In some cases, another account managed by a portfolio manager may compensate the investment adviser based on the performance of the securities held by that account. The existence of such a performance based fee may create additional conflicts of interest for the portfolio manager in the allocation of management time, resources and investment opportunities. Whenever conflicts of interest arise, the portfolio manager will endeavor to exercise his or her discretion in a manner that he or she believes is equitable to all interested persons. EVM has adopted several policies and procedures designed to address these potential conflicts including a code of ethics and policies that govern the investment adviser’s trading practices, including among other things the aggregation and allocation of trades among clients, brokerage allocations, cross trades and best execution.

Compensation Structure for EVM

The compensation structure of Eaton Vance and its affiliates that are investment advisers (for purposes of this section “Eaton Vance”) is based on a total reward system of base salary and incentive compensation, which is paid either in the form of cash bonus, or for employees meeting the specified deferred compensation eligibility threshold, partially as a cash bonus and partially as mandatory deferred compensation. Deferred compensation granted to Eaton Vance employees is generally granted as a mix of deferred cash awards under the Investment Management Alignment Plan (IMAP) and equity-based awards in the form of stock units. The portion of incentive compensation granted in the form of a deferred compensation award and the terms of such awards are determined annually by the Compensation, Management Development and Succession Committee of the Board of Directors of Eaton Vance’s parent company, Morgan Stanley.

Base salary compensation. Generally, portfolio managers and research analysts receive base salary compensation based on the level of their position with the Adviser.

Incentive compensation. In addition to base compensation, portfolio managers and research analysts may receive discretionary year-end compensation. Incentive compensation may include:

 

  •  

Cash bonus

 

  •  

Deferred compensation:

 

  •  

A mandatory program that defers a portion of incentive compensation into restricted stock units or other awards based on Morgan Stanley common stock or other plans that are subject to vesting and other conditions.

 

  •  

IMAP is a cash-based deferred compensation plan designed to increase the alignment of participants’ interests with the interests of clients. For eligible employees, a portion of their deferred compensation is mandatorily deferred into IMAP on an annual basis. Awards granted under IMAP are notionally invested in referenced funds available pursuant to the plan, which are funds advised by MSIM and its affiliates including Eaton Vance. Portfolio managers are required to notionally invest a minimum of 40% of their account balance in the designated funds that they manage and are included in the IMAP notional investment fund menu.

 

  •  

Deferred compensation awards are typically subject to vesting over a multi-year period and are subject to cancellation through the payment date for competition, cause (i.e., any act or omission that constitutes a breach of obligation to the Funds, including failure to comply with internal compliance, ethics or risk management standards, and failure or refusal to perform duties satisfactorily, including supervisory and management duties), disclosure of proprietary information, and solicitation of employees or clients. Awards are also subject to clawback through the payment date if an employee’s act or omission (including with respect to direct supervisory responsibilities) causes a restatement of the firm’s consolidated financial results, constitutes a violation of the firm’s global risk management principles, policies and standards, or causes a loss of revenue associated with a position on which the employee was paid and the employee operated outside of internal control policies.

Eaton Vance compensates employees based on principles of pay-for-performance, market competitiveness and risk management. Eligibility for, and the amount of any, discretionary compensation is subject to a multi-dimensional process. Specifically, consideration is given to one or more of the following factors, which can vary by portfolio management team and circumstances:

 

  •  

Revenue and profitability of the business and/or each fund/account managed by the portfolio manager

 

  •  

Individual contribution and performance

 

  •  

Contribution to client objectives

 

  •  

Revenue and profitability of the firm

 

  •  

Return on equity and risk factors of both the business units and Morgan Stanley

 

  •  

Assets managed by the portfolio manager

 

  •  

External market conditions

 

  •  

New business development and business sustainability

 

  •  

Team, product and/or Eaton Vance performance

 

  •  

The pre-tax investment performance of the funds/accounts managed by the portfolio manager(1) (which may, in certain cases, be measured against the applicable benchmark(s) and/or peer group(s) over one, three and five-year periods),(2) provided that for funds that are tax-managed or otherwise have an objective of after-tax returns, performance net of taxes will be considered

Further, the firm’s Global Incentive Compensation Discretion Policy requires compensation managers to consider only legitimate, business related factors when exercising discretion in determining variable incentive compensation, including adherence to Morgan Stanley’s core values, conduct, disciplinary actions in the current performance year, risk management and risk outcomes.

 

(1)

Generally, this is total return performance, provided that consideration may also be given to relative risk- adjusted performance.

(2)

When a fund’s peer group as determined by Lipper or Morningstar is deemed by the relevant Eaton Vance Chief Investment Officer, or in the case of the sub-advised Funds, the Director of Product Development and Sub-Advised Funds, not to provide a fair comparison, performance may instead be evaluated primarily against a custom peer group or market index.

Item 9. Purchases of Equity Securities by Closed-End Management Investment Company and Affiliated

No such purchases this period.

Item 10. Submission of Matters to a Vote of Security Holders

No material changes.

Item 11. Controls and Procedures

(a) It is the conclusion of the registrant’s principal executive officer and principal financial officer that the effectiveness of the registrant’s current disclosure controls and procedures (such disclosure controls and procedures having been evaluated within 90 days of the date of this filing) provide reasonable assurance that the information required to be disclosed by the registrant has been recorded, processed, summarized and reported within the time period specified in the Commission’s rules and forms and that the information required to be disclosed by the registrant has been accumulated and communicated to the registrant’s principal executive officer and principal financial officer in order to allow timely decisions regarding required disclosure.

(b) There have been no changes in the registrant’s internal controls over financial reporting during the period covered by this report that has materially affected, or is reasonably likely to materially affect, the registrant’s internal control over financial reporting.

Item 12. Disclosure of Securities Lending Activities for Closed-End Management Investment Companies

No activity to report for the registrant’s most recent fiscal year end.

Item 13. Exhibits

 

(a)(1)   Registrant’s Code of Ethics – Not applicable (please see Item 2).
(a)(2)(i)   Treasurer’s Section 302 certification.
(a)(2)(ii)   President’s Section 302 certification.
(b)   Combined Section 906 certification.
(d)   Consent

Signatures

Pursuant to the requirements of the Securities Exchange Act of 1934 and the Investment Company Act of 1940, the registrant has duly caused this report to be signed on its behalf by the undersigned, thereunto duly authorized.

 

Eaton Vance Senior Income Trust
By:  

/s/ Eric A. Stein

  Eric A. Stein
  President

Date: August 22, 2023

Pursuant to the requirements of the Securities Exchange Act of 1934 and the Investment Company Act of 1940, this report has been signed below by the following persons on behalf of the registrant and in the capacities and on the dates indicated.

 

By:  

/s/ James F. Kirchner

  James F. Kirchner
  Treasurer

Date: August 22, 2023

 

By:  

/s/ Eric A. Stein

  Eric A. Stein
  President

Date: August 22, 2023

 

Eaton Vance Senior Income Trust

FORM N-CSR

Exhibit 13(a)(2)(i)

CERTIFICATION

I, James F. Kirchner, certify that:

1. I have reviewed this report on Form N-CSR of Eaton Vance Senior Income Trust;

2. Based on my knowledge, this report does not contain any untrue statement of a material fact or omit to state a material fact necessary to make the statements made, in light of the circumstances under which such statements were made, not misleading with respect to the period covered by this report;

3. Based on my knowledge, the financial statements, and other financial information included in this report, fairly present in all material respects the financial condition, results of operations, changes in net assets, and cash flows (if the financial statements are required to include a statement of cash flows) of the registrant as of, and for, the periods presented in this report;

4. The registrant’s other certifying officer(s) and I are responsible for establishing and maintaining disclosure controls and procedures (as defined in Rule 30a-3(c) under the Investment Company Act of 1940) and internal control over financial reporting (as defined in Rule 30a-3(d) under the Investment Company Act of 1940) for the registrant and have:

(a) Designed such disclosure controls and procedures, or caused such disclosure controls and procedures to be designed under our supervision, to ensure that material information relating to the registrant, including its consolidated subsidiaries, is made known to us by others within those entities, particularly during the period in which this report is being prepared;

(b) Designed such internal control over financial reporting, or caused such internal control over financial reporting to be designed under our supervision, to provide reasonable assurance regarding the reliability of financial reporting and the preparation of financial statements for external purposes in accordance with generally accepted accounting principles;

(c) Evaluated the effectiveness of the registrant’s disclosure controls and procedures and presented in this report our conclusions about the effectiveness of the disclosure controls and procedures, as of a date within 90 days prior to the filing date of this report based on such evaluation; and

(d) Disclosed in this report any change in the registrant’s internal control over financial reporting that occurred during the period covered by this report that has materially affected, or is reasonably likely to materially affect, the registrant’s internal control over financial reporting; and

5. The registrant’s other certifying officer(s) and I have disclosed to the registrant’s auditors and the audit committee of the registrant’s board of directors (or persons performing the equivalent functions):

(a) All significant deficiencies and material weaknesses in the design or operation of internal control over financial reporting which are reasonably likely to adversely affect the registrant’s ability to record, process, summarize, and report financial information; and

(b) Any fraud, whether or not material, that involves management or other employees who have a significant role in the registrant’s internal control over financial reporting.

 

Date: August 22, 2023      

/s/ James F. Kirchner

      James F. Kirchner
      Treasurer

Eaton Vance Senior Income Trust

FORM N-CSR

Exhibit 13(a)(2)(ii)

CERTIFICATION

I, Eric A. Stein, certify that:

1. I have reviewed this report on Form N-CSR of Eaton Vance Senior Income Trust;

2. Based on my knowledge, this report does not contain any untrue statement of a material fact or omit to state a material fact necessary to make the statements made, in light of the circumstances under which such statements were made, not misleading with respect to the period covered by this report;

3. Based on my knowledge, the financial statements, and other financial information included in this report, fairly present in all material respects the financial condition, results of operations, changes in net assets, and cash flows (if the financial statements are required to include a statement of cash flows) of the registrant as of, and for, the periods presented in this report;

4. The registrant’s other certifying officer(s) and I are responsible for establishing and maintaining disclosure controls and procedures (as defined in Rule 30a-3(c) under the Investment Company Act of 1940) and internal control over financial reporting (as defined in Rule 30a-3(d) under the Investment Company Act of 1940) for the registrant and have:

(a) Designed such disclosure controls and procedures, or caused such disclosure controls and procedures to be designed under our supervision, to ensure that material information relating to the registrant, including its consolidated subsidiaries, is made known to us by others within those entities, particularly during the period in which this report is being prepared;

(b) Designed such internal control over financial reporting, or caused such internal control over financial reporting to be designed under our supervision, to provide reasonable assurance regarding the reliability of financial reporting and the preparation of financial statements for external purposes in accordance with generally accepted accounting principles;

(c) Evaluated the effectiveness of the registrant’s disclosure controls and procedures and presented in this report our conclusions about the effectiveness of the disclosure controls and procedures, as of a date within 90 days prior to the filing date of this report based on such evaluation; and

(d) Disclosed in this report any change in the registrant’s internal control over financial reporting that occurred during the period covered by this report that has materially affected, or is reasonably likely to materially affect, the registrant’s internal control over financial reporting; and

5. The registrant’s other certifying officer(s) and I have disclosed to the registrant’s auditors and the audit committee of the registrant’s board of directors (or persons performing the equivalent functions):

(a) All significant deficiencies and material weaknesses in the design or operation of internal control over financial reporting which are reasonably likely to adversely affect the registrant’s ability to record, process, summarize, and report financial information; and

(b) Any fraud, whether or not material, that involves management or other employees who have a significant role in the registrant’s internal control over financial reporting.

 

Date: August 22, 2023     

/s/ Eric A. Stein

     Eric A. Stein
     President

Form N-CSR Item 13(b) Exhibit

CERTIFICATION PURSUANT TO

18 U.S.C. SECTION 1350,

AS ADOPTED PURSUANT TO

SECTION 906 OF THE SARBANES-OXLEY ACT OF 2002

The undersigned hereby certify in their capacity as Treasurer and President, respectively, of Eaton Vance Senior Income Trust (the “Trust”), that:

 

(a)

The Annual Report of the Trust on Form N-CSR for the period ended June 30, 2023 (the “Report”) fully complies with the requirements of Section 13(a) or 15(d) of the Securities Exchange Act of 1934, as amended; and

 

(b)

The information contained in the Report fairly presents, in all material respects, the financial condition and the results of operations of the Trust for such period.

A signed original of this written statement required by section 906 has been provided to the Trust and will be retained by the Trust and furnished to the Securities and Exchange Commission or its staff upon request.

 

Eaton Vance Senior Income Trust
Date: August 22, 2023

/s/ James F. Kirchner

James F. Kirchner
Treasurer
Date: August 22, 2023

/s/ Eric A. Stein

Eric A. Stein
President

Form N-CSR Item 13(d) Exhibit

CONSENT OF INDEPENDENT REGISTERED PUBLIC ACCOUNTING FIRM

We consent to the incorporation by reference in Registration Statement No. 333-263033 on Form N-2 of our report dated August 18, 2023, relating to the financial statements and financial highlights of Eaton Vance Senior Income Trust (the “Trust”), appearing in this Annual Report on Form N-CSR of the Trust for the year ended June 30, 2023.

/s/ Deloitte & Touche LLP

Boston, Massachusetts

August 24, 2023

v3.23.2
N-2 - USD ($)
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Cover [Abstract]                                                        
Entity Central Index Key                 0001070732                                      
Amendment Flag                 false                                      
Document Type                 N-CSR                                      
Entity Registrant Name                 Eaton Vance Senior Income Trust                                      
Fee Table [Abstract]                                                        
Shareholder Transaction Expenses [Table Text Block]                
Common shareholder transaction expenses  
Sales load paid by you (as a percentage of offering price) — 1
Offering expenses (as a percentage of offering price) None 2
Dividend reinvestment plan fees $5.003
1    If common shares are sold to or through underwriters, the Prospectus Supplement will set forth any applicable sales load.
2    Eaton Vance Management (“EVM”) will pay the expenses of the offering (other than the applicable commissions); therefore, offering expenses are not included in the Summary of Fund Expenses. Offering expenses generally include, but are not limited to, the preparation, review and filing with the SEC of the Trust’s registration statement (including its current Prospectus Supplement, the accompanying Prospectus and Statement of Additional Information (“SAI”)), the preparation, review and filing of any associated marketing or similar materials, costs associated with the printing, mailing or other distribution of its current Prospectus Supplement, the accompanying Prospectus, SAI and/or marketing materials, associated filing fees, stock exchange listing fees, and legal and auditing fees associated with the offering.
3    You will be charged a $5.00 service charge and pay brokerage charges if you direct the plan agent to sell your common shares held in a dividend reinvestment account.
                                      
Sales Load [Percent] [1]                                                      
Dividend Reinvestment and Cash Purchase Fees [2]                 $ 5.00                                      
Other Transaction Expenses [Abstract]                                                        
Other Transaction Expenses [Percent] [3]                 0.00%                                      
Annual Expenses [Table Text Block]                
Annual expenses Percentage of net assets attributable to common shares4
Investment adviser fee 1.11%5
Interest and fee expense6 1.057
Other expenses 0.88
Acquired fund fees and expenses 0.07
Total annual Trust operating expenses 3.11%
Dividends on preferred shares 1.697
Total annual Trust operating expenses and dividends on preferred shares 4.80%
4    Stated as a percentage of average net assets attributable to common shares for the year ended June 30, 2023.
5    The investment adviser fee paid by the Trust to EVM is based on the average weekly gross assets of the Trust, including all assets attributable to any form of investment leverage that the Trust may utilize. Accordingly, if the Trust were to increase investment leverage in the future, the investment adviser fee will increase as a percentage of net assets. Pursuant to the investment advisory agreement, the investment adviser fee was computed at an annual rate of 0.72% of the Trust’s average weekly gross assets through April 30, 2023 and beginning May 1, 2023, at 0.71% of the Trust’s average weekly gross assets, and is payable monthly. The annual investment adviser fee rate shall be reduced to the following as of the stated date: May 1, 2024: 0.70%, May 1, 2025: 0.69% and May 1, 2026: 0.55%.
6    Interest and fee expense relates to the notes payable.
7    As of June 30, 2023, the outstanding borrowings represented approximately 12.15% leverage and the preferred shares represented approximately 22.83% leverage, totaling 34.98% leverage.
                                     
Management Fees [Percent] [4],[5]                 1.11%                                      
Interest Expenses on Borrowings [Percent] [4],[6],[7]                 1.05%                                      
Dividend Expenses on Preferred Shares [Percent] [4]                 1.69%                                      
Acquired Fund Fees and Expenses [Percent] [4]                 0.07%                                      
Other Annual Expenses [Abstract]                                                        
Other Annual Expenses [Percent] [4]                 0.88%                                      
Total Annual Expenses [Percent] [4]                 3.11%                                      
Net Expense over Assets [Percent] [4]                 4.80%                                      
Expense Example [Table Text Block]                
Example
The following example illustrates the expenses that common shareholders would pay on a $1,000 investment in common shares, assuming (i) total annual expenses and dividends on preferred shares of 4.80% of net assets attributable to common shares in years 1 through 10; (ii) a 5% annual return; and (iii) all distributions are reinvested at NAV:
1 Year 3 Years 5 Years 10 Years
$48 $144 $241 $485
The above table and example and the assumption in the example of a 5% annual return are required by regulations of the U.S. Securities and Exchange Commission (“SEC”) that are applicable to all investment companies; the assumed 5% annual return is not a prediction of, and does not represent, the projected or actual performance of the Trust’s common shares. In addition, while the example assumes reinvestment of all dividends and distributions at NAV, participants in the Trust’s dividend reinvestment plan may receive common shares purchased or issued at a price or value different from NAV. The example does not include sales load or estimated offering costs, which would cause the expenses shown in the example to increase. The example should not be considered a representation of past or future expenses, and the Trust’s actual expenses may be greater or less than those shown. Moreover, the Trust’s actual rate of return may be greater or less than the hypothetical 5% return shown in the example.
                                      
Expense Example, Year 01                 $ 48                                      
Expense Example, Years 1 to 3                 144                                      
Expense Example, Years 1 to 5                 241                                      
Expense Example, Years 1 to 10                 $ 485                                      
Purpose of Fee Table , Note [Text Block]                
The purpose of the table below is to help you understand all fees and expenses that you, as a common shareholder, would bear directly or indirectly. The table reflects the Trust’s issuance of preferred shares and borrowings, and shows Trust expenses as a percentage of net assets attributable to common shares for the year ended June 30, 2023.
                                      
Basis of Transaction Fees, Note [Text Block]                 as a percentage of offering price                                      
Other Transaction Fees, Note [Text Block]                 Eaton Vance Management (“EVM”) will pay the expenses of the offering (other than the applicable commissions); therefore, offering expenses are not included in the Summary of Fund Expenses. Offering expenses generally include, but are not limited to, the preparation, review and filing with the SEC of the Trust’s registration statement (including its current Prospectus Supplement, the accompanying Prospectus and Statement of Additional Information (“SAI”)), the preparation, review and filing of any associated marketing or similar materials, costs associated with the printing, mailing or other distribution of its current Prospectus Supplement, the accompanying Prospectus, SAI and/or marketing materials, associated filing fees, stock exchange listing fees, and legal and auditing fees associated with the offering.                                      
Management Fee not based on Net Assets, Note [Text Block]                 The investment adviser fee paid by the Trust to EVM is based on the average weekly gross assets of the Trust, including all assets attributable to any form of investment leverage that the Trust may utilize. Accordingly, if the Trust were to increase investment leverage in the future, the investment adviser fee will increase as a percentage of net assets.                                      
Financial Highlights [Abstract]                                                        
Senior Securities [Table Text Block]                
Fiscal Year Ended Notes
Payable
Outstanding
(in 000's) 		Asset
Coverage
per $1,000
of Notes
Payable ¹ 		Preferred
Shares
Outstanding 		Asset
Coverage
per
Preferred
Share ² 		Involuntary
Liquidation
Preference
per
Preferred
Share ³ 		Approximate
Market
Value per
Preferred
Share ³
June 30, 2023 $20,000 $8,235 1,504 $71,481 $25,000 $25,000
June 30, 2022 26,000 6,531 1,504 66,752 25,000 25,000
June 30, 2021 103,000 3,903 1,504 71,484 25,000 25,000
June 30, 2020 95,000 3,866 1,504 69,242 25,000 25,000
June 30, 2019 103,000 3,957 1,504 72,464 25,000 25,000
June 30, 2018 93,000 4,587 2,464 68,989 25,000 25,000
June 30, 2017 92,000 4,613 2,464 69,078 25,000 25,000
June 30, 2016 25,000 15,472 4,400 71,629 25,000 25,000
June 30, 2015 60,000 7,267 4,400 64,119 25,000 25,000
June 30, 2014 65,000 6,970 4,400 64,721 25,000 25,000
1    Calculated by subtracting the Trust’s total liabilities (not including the notes payable and preferred shares) from the Trust’s total assets, and dividing the result by the notes payable balance in thousands.
2    Calculated by subtracting the Trust’s total liabilities (not including the notes payable and preferred shares) from the Trust’s total assets, dividing the result by the sum of the value of the notes payable and liquidation value of the preferred shares, and multiplying the result by the liquidation value of one preferred share.
3    Plus accumulated and unpaid dividends.
                                     
General Description of Registrant [Abstract]                                                        
Investment Objectives and Practices [Text Block]                
Investment Objectives. The Fund’s investment objective is to provide a high level of current income, consistent with the preservation of capital.
Principal Strategies. The Fund pursues its objective by investing primarily in senior, secured floating-rate loans (“Senior Loans”). Senior Loans are loans in which the interest rate paid fluctuates based on a reference rate. Senior Loans typically are secured with specific collateral and have a claim on the assets and/or stock that is senior to subordinated debtholders and stockholders of the borrower. Senior Loans are made to corporations, partnerships and other business entities (“Borrowers”) that operate in various industries and geographical regions.
Under normal market conditions, at least 80% of the Fund’s total assets will be invested in interests in Senior Loans of domestic and foreign borrowers that are denominated in U.S. dollars or in euros, British pounds, Swiss francs, Canadian dollars and Australian dollars (each an “Authorized Foreign Currency”) making payments in such Authorized Foreign Currency. The remaining investment assets of the Fund may include, among other types of investments, equity securities that are acquired in connection with an investment in a Senior Loan. For the purpose of the 80% test, total assets is defined as net assets plus any borrowings for investment purposes, including any outstanding preferred shares. The Fund may invest up to 15% of its net assets in Senior Loans denominated in an Authorized Foreign Currency.
The Fund may invest up to 20% of its total assets in (i) loan interests which have (a) a second lien on collateral (“Second Lien”), (b) no security interest in the collateral, or (c) lower than a senior claim on collateral (“Junior Loans”); (ii) other income-producing securities, such as investment and non-investment grade corporate debt securities and U.S. government and U.S. dollar-denominated foreign government or supranational debt securities; and (iii) warrants and equity securities issued by a Borrower or its affiliates as part of a package of investments in the Borrower or its affiliates.
Senior Loans typically are of below investment grade quality (“Non-Investment Grade Bonds”) and have below investment grade credit ratings, which ratings are associated with securities having high risk, speculative characteristics (sometimes referred to as “junk”). The Fund may invest in individual Senior Loans and other securities of any credit quality.
The Fund may invest up to 15% of net assets in Senior Loans denominated in Authorized Foreign Currencies and may invest in other securities of non-United States issuers. The Fund’s investments may have significant exposure to certain sectors of the economy and thus may react differently to political or economic developments than the market as a whole. The Fund will not invest more than 10% of its assets in securities (including interests in Senior Loans) of any single Borrower.
The Fund may purchase or sell derivative instruments (which derive their value from another instrument, security or index) for risk management purposes, such as hedging against fluctuations in Senior Loans and other securities prices or interest rates. Transactions in derivative instruments may include the purchase or sale of futures contracts on securities, indices and other financial instruments, credit-linked notes, tranches of collateralized loan obligations and/or collateralized debt obligations, options on futures contracts, exchange-traded and over-the-counter options on securities or indices, forward foreign currency exchange contracts, and interest rate, total return and credit default swaps.
The Fund employs leverage to seek opportunities for additional income. Leverage may amplify the effect on the Fund’s net asset value (“NAV”) of any increase or decrease in the value of investments held. There can be no assurance that the use of borrowings will be successful. The Fund has issued preferred shares and borrowed to establish leverage. Investments in derivative instruments may result in economic leverage for the Fund.
                                      
Risk Factors [Table Text Block]                
Principal Risks
Income Risk. The income investors receive from the Fund is based primarily on the interest it earns from its investments, which can vary widely over the short and long-term. If prevailing market interest rates drop, investors’ income from the Fund could drop as well. The Fund’s income could also be affected adversely when prevailing short-term interest rates increase and the Fund is utilizing leverage, although this risk is mitigated by the Fund’s investment in Senior Loans, which pay floating-rates of interest.
Market Risk. The value of investments held by the Fund may increase or decrease in response to social, economic, political, financial, public health crises or other disruptive events (whether real, expected or perceived) in the U.S. and global markets and include events such as war, natural disasters, epidemics and pandemics, terrorism, conflicts and social unrest. These events may negatively impact broad segments of businesses and populations and may exacerbate pre-existing risks to the Fund. The frequency and magnitude of resulting changes in the value of the Fund’s investments cannot be predicted. Certain securities and other investments held by the Fund may experience increased volatility, illiquidity, or other potentially adverse effects in reaction to changing market conditions. Monetary and/or fiscal actions taken by U.S. or foreign governments to stimulate or stabilize the global economy may not be effective and could lead to high market volatility. No active trading market may exist for certain investments held by the Fund, which may impair the ability of the Fund to sell or to realize the current valuation of such investments in the event of the need to liquidate such assets.
Senior Loans Risk. The risks associated with Senior Loans are similar to the risks of Non-Investment Grade Bonds (discussed below), although Senior Loans are typically senior and secured in contrast to Non-Investment Grade Bonds, which are often subordinated and unsecured. Senior Loans’ higher standing has historically resulted in generally higher recoveries in the event of a corporate reorganization or other restructuring. In addition, because their interest rates are adjusted for changes in short-term interest rates, Senior Loans generally have less interest rate risk than Non-Investment Grade Bonds, which are typically fixed rate. The Fund’s investments in Senior Loans are typically below investment grade and are considered speculative because of the credit risk of their issuers. Such companies are more likely to default on their payments of interest and principal owed to the Fund, and such defaults could reduce the Fund’s NAV and income distributions. An economic downturn generally leads to a higher non-payment rate, and a debt obligation may lose
significant value before a default occurs. Moreover, any specific collateral used to secure a loan may decline in value or lose all its value or become illiquid, which would adversely affect the loan’s value.  “Junior Loans” are secured and unsecured subordinated loans, Second Lien loans and subordinate bridge loans. Senior Loans and Junior Loans are referred to together herein as “loans.”
Loans and other debt securities are also subject to the risk of price declines and to increases in prevailing interest rates, although floating-rate debt instruments are less exposed to this risk than fixed-rate debt instruments. Interest rate changes may also increase prepayments of debt obligations and require the Fund to invest assets at lower yields.
Loans are traded in a private, unregulated inter-dealer or inter-bank resale market and are generally subject to contractual restrictions that must be satisfied before a loan can be bought or sold. These restrictions may impede the Fund’s ability to buy or sell loans (thus affecting their liquidity) and may negatively impact the transaction price. See also “Market Risk” above. It also may take longer than seven days for transactions in loans to settle. The types of covenants included in loan agreements generally vary depending on market conditions, the creditworthiness of the issuer, the nature of the collateral securing the loan and possibly other factors. Loans with fewer covenants that restrict activities of the borrower may provide the borrower with more flexibility to take actions that may be detrimental to the loan holders and provide fewer investor protections in the event of such actions or if covenants are breached. The Fund may experience relatively greater realized or unrealized losses or delays and expense in enforcing its rights with respect to loans with fewer restrictive covenants. Loans to entities located outside of the U.S. may have substantially different lender protections and covenants as compared to loans to U.S. entities and may involve greater risks.  The Fund may have difficulties and incur expense enforcing its rights with respect to non-U.S. loans and such loans could be subject to bankruptcy laws that are materially different than in the U.S.  Loans may be structured such that they are not securities under securities law, and in the event of fraud or misrepresentation by a borrower, lenders may not have the protection of the anti-fraud provisions of the federal securities laws. Loans are also subject to risks associated with other types of income investments, including credit risk and risks of lower rated investments.
Credit Risk. Investments in fixed-income and other debt obligations, including loans, (referred to below as “debt instruments”) are subject to the risk of non-payment of scheduled principal and interest. Changes in economic conditions or other circumstances may reduce the capacity of the party obligated to make principal and interest payments on such instruments and may lead to defaults. Such non-payments and defaults may reduce the value of Fund shares and income distributions. The value of debt instruments also may decline because of concerns about the issuer’s ability to make principal and interest payments. In addition, the credit ratings of debt instruments may be lowered if the financial condition of the party obligated to make payments with respect to such instruments deteriorates. In the event of bankruptcy of the issuer of a debt instrument, the Fund could experience delays or limitations with respect to its ability to realize the benefits of any collateral securing the instrument. In order to enforce its rights in the event of a default, bankruptcy or similar situation, the Fund may be required to retain legal or similar counsel, which may increase the Fund’s operating expenses and adversely affect NAV. Due to their lower place in the borrower’s capital structure, Junior Loans involve a higher degree of overall risk than Senior Loans to the same borrower.
Additional Risks of Loans. Loans are traded in a private, unregulated inter-dealer or inter-bank resale market and are generally subject to contractual restrictions that must be satisfied before a loan can be bought or sold. These restrictions may impede the Fund’s ability to buy or sell loans (thus affecting their liquidity) and may negatively impact the transaction price. See also “Market Risk” above. It also may take longer than seven days for transactions in loans to settle. The types of covenants included in loan agreements generally vary depending on market conditions, the creditworthiness of the issuer, the nature of the collateral securing the loan and possibly other factors. Loans with fewer covenants that restrict activities of the borrower may provide the borrower with more flexibility to take actions that may be detrimental to the loan holders and provide fewer investor protections in the event of such actions or if covenants are breached. The Fund may experience relatively greater realized or unrealized losses or delays and expense in enforcing its rights with respect to loans with fewer restrictive covenants. Loans to entities located outside of the U.S. may have substantially different lender protections and covenants as compared to loans to U.S. entities and may involve greater risks. The Fund may have difficulties and incur expense enforcing its rights with respect to non-U.S. loans and such loans could be subject to bankruptcy laws that are materially different than in the U.S. Loans may be structured such that they are not securities under securities law, and in the event of fraud or misrepresentation by a borrower, lenders may not have the protection of the anti-fraud provisions of the federal securities laws. Loans are also subject to risks associated with other types of income investments, including credit risk and risks of lower rated investments.
Lower Rated Investments Risk. Investments rated below investment grade and comparable unrated investments (sometimes referred to as “junk”) are speculative because of increased credit risk relative to other fixed income investments. Changes in economic conditions or other circumstances typically have a greater effect on the ability of issuers of lower rated investments to make principal and interest payments than they do on issuers of higher rated investments. An economic downturn generally leads to a higher non-payment rate, and a lower rated investment may lose significant value before a default occurs. Lower rated investments typically are subject to greater price volatility and illiquidity than higher rated investments.
Interest Rate Risk. In general, the value of income securities will fluctuate based on changes in interest rates. The value of these securities is likely to increase when interest rates fall and decline when interest rates rise. Duration measures the time-weighted expected cash flows of a fixed-income security, while maturity refers to the amount of time until a fixed-income security matures. Generally, securities with longer durations or maturities are more sensitive to changes in interest rates than securities with shorter durations or maturities, causing them to be more volatile. Conversely, fixed-income securities with shorter durations or maturities will be less volatile but may provide lower returns than fixed-income securities with longer durations or maturities. The impact of interest rate changes is significantly less for floating-rate instruments that have relatively short periodic rate resets (e.g., ninety days or less). In a rising interest rate environment, the duration of income securities that have the ability to be prepaid or called by the issuer may be extended. In a declining interest rate environment, the proceeds from prepaid or maturing instruments may have to be reinvested at a lower interest rate.
LIBOR Risk. The London Interbank Offered Rate or LIBOR historically has been used throughout global banking and financial industries to determine interest rates for a variety of financial instruments (such as debt instruments and derivatives) and borrowing arrangements. Upon a determination by regulators to phase out the use of LIBOR, market participants have been transitioning to the use of alternative reference rates over the past few years.  As of June 30, 2023, the administrator of LIBOR ceased publishing LIBOR settings. In addition, global regulators have announced that, with limited exceptions, no new LIBOR-based contracts should be entered into after 2021. Certain instruments held by the Fund have been subject to an interest rate based on LIBOR. Although the transition process away from LIBOR has become increasingly well defined, the impact on certain debt securities, derivatives and other financial instruments that utilize LIBOR remains uncertain. The transition process may involve, among other things, increased volatility or illiquidity in markets for instruments that were historically based on LIBOR, such as floating-rate debt obligations. Any such effects of the transition away from LIBOR and the adoption of alternative reference rates, as well as other unforeseen effects, could result in losses to the Fund. Furthermore, the risks associated with the expected discontinuation of LIBOR and transition to replacement rates may be exacerbated if an orderly transition to an alternative reference rate is not completed in a timely manner.
Non-Investment Grade Bonds Risk. The Fund’s investments in Non-Investment Grade Bonds, commonly referred to as “junk bonds,” are predominantly speculative because of the credit risk of their issuers. While offering a greater potential opportunity for capital appreciation and higher yields, Non-Investment Grade Bonds typically entail greater potential price volatility and may be less liquid than higher-rated securities. Issuers of Non-Investment Grade Bonds are more likely to default on their payments of interest and principal owed to the Fund, and such defaults will reduce the Fund’s NAV and income distributions. The prices of these lower rated obligations are more sensitive to negative developments than higher rated securities. Adverse business conditions, such as a decline in the issuer’s revenues or an economic downturn, generally lead to a higher non-payment rate. In addition, a security may lose significant value before a default occurs as the market adjusts to expected higher non-payment rates.
Prepayment Risk. During periods of declining interest rates or for other purposes, Borrowers may exercise their option to prepay principal earlier than scheduled. For fixed-income securities, such payments often occur during periods of declining interest rates, forcing the Fund to reinvest in lower yielding securities. This is known as call or prepayment risk. Non-Investment Grade Bonds frequently have call features that allow the issuer to redeem the security at dates prior to its stated maturity at a specified price (typically greater than par) only if certain prescribed conditions are met (“call protection”). An issuer may redeem a Non-Investment Grade Bond if, for example, the issuer can refinance the debt at a lower cost due to declining interest rates or an improvement in the credit standing of the issuer. Senior Loans typically have no such call protection. For premium bonds (bonds acquired at prices that exceed their par or principal value) purchased by the Fund, prepayment risk may be enhanced.
Issuer Risk. The value of corporate income-producing securities held by the Fund may decline for a number of reasons, which directly relate to the issuer, such as management performance, financial leverage and reduced demand for the issuer’s goods and services.
Leverage Risk. Leverage, including leverage from the issuance of preferred shares and borrowings, creates risks, including the likelihood of greater volatility of NAV and market price of, and distributions from, the common shares and the risk that fluctuations in dividend rates on preferred shares and in the costs of borrowings may affect the return to common shareholders. To the extent the income derived from investments purchased with funds received from leverage exceeds the cost of leverage, the Fund’s distributions will be greater than if leverage had not been used. Conversely, if the income from the investments purchased with such funds is not sufficient to cover the cost of leverage, the amount of income available for distribution to common shareholders will be less than if leverage had not been used. In the latter case, the investment adviser may nevertheless determine to maintain the Fund’s leveraged position if it deems such action to be appropriate. While the Fund has preferred shares or borrowings outstanding, an increase in short-term rates would also result in an increased cost of leverage, which would adversely affect the Fund’s income available for distribution. In connection with its borrowings and preferred shares, the Fund will be required to maintain specified asset coverage by applicable federal securities laws and (as applicable) the terms of the preferred shares and its credit facility. The Fund may be required to dispose of portfolio investments on unfavorable terms if market fluctuations or other factors cause the required asset coverage to be less than the prescribed amount. There can be no assurance that a leveraging strategy will be successful.
Foreign Investment Risk. Foreign investments can be adversely affected by political, economic and market developments abroad, including the imposition of economic and other sanctions by the United States or another country against a particular country or countries, organizations, entities and/or individuals. There may be less publicly available information about foreign issuers because they may not be subject to reporting practices, requirements or regulations comparable to those to which United States companies are subject. Adverse changes in investment regulations, capital requirements or exchange controls could adversely affect the value of the Fund’s investments. Foreign markets may be smaller, less liquid and more volatile than the major markets in the United States, and as a result, Fund share values may be more volatile. Trading in foreign markets typically involves higher expense than trading in the United States. The Fund may have difficulties enforcing its legal or contractual rights in a foreign country.
Emerging Markets Investment Risk. Investment markets within emerging market countries are typically smaller, less liquid, less developed and more volatile than those in more developed markets like the United States, and may be focused in certain sectors. Emerging market securities often involve greater risks than developed market securities. The information available about an emerging market issuer may be less reliable than for comparable issuers in more developed capital markets.
Currency Risk. Exchange rates for currencies fluctuate daily. The value of foreign investments may be affected favorably or unfavorably by changes in currency exchange rates in relation to the U.S. dollar. Currency markets generally are not as regulated as securities markets and currency transactions are subject to settlement, custodial and other operational risks.
Derivatives Risk. The Fund’s exposure to derivatives involves risks different from, or possibly greater than, the risks associated with investing directly in securities and other investments. The use of derivatives can lead to losses because of adverse movements in the price or value of the security, instrument, index, currency, commodity, economic indicator or event underlying a derivative (“reference instrument”), due to failure of a counterparty or due to tax or regulatory constraints. Derivatives may create leverage in the Fund, which represents a non-cash exposure to the underlying reference instrument. Leverage can increase both the risk and return potential of the Fund. Derivatives risk may be more significant when derivatives are used to enhance return or as a substitute for a cash investment position, rather than solely to hedge the risk of a position held by the Fund. Use of derivatives involves the exercise of specialized skill and judgment, and a transaction may be unsuccessful in whole or in part because of market behavior or unexpected events. Changes in the value of a derivative (including one used for hedging) may not correlate perfectly with the underlying reference instrument. Derivative instruments traded in over-the-counter markets may be difficult to value, may be illiquid, and may be subject to wide swings in valuation caused by changes in the value of the underlying reference instrument. If a derivative’s counterparty is unable to honor its commitments, the value of Fund shares may decline and the Fund could experience delays in (or be unable to achieve) the return of collateral or other assets held by the counterparty. The loss on derivative transactions may substantially exceed the initial investment. A derivative investment also involves the risks relating to the reference instrument underlying the investment.
U.S. Government Securities Risk. Although certain U.S. Government sponsored agencies (such as the Federal Home Loan Mortgage Corporation and the Federal National Mortgage Association) may be chartered or sponsored by acts of Congress, their securities are neither issued nor guaranteed by the U.S. Treasury. U.S. Treasury securities generally have a lower return than other obligations because of their higher credit quality and market liquidity.
Pooled Investment Vehicles Risk. Pooled investment vehicles are open- and closed-end investment companies and exchange-traded funds (“ETFs”). Pooled investment vehicles are subject to the risks of investing in the underlying securities or other investments.  Shares of closed-end investment companies and ETFs may trade at a premium or discount to NAV and are subject to secondary market trading risks.  In addition, the Fund will bear a pro rata portion of the operating expenses of a pooled investment vehicle in which it invests.
Equity Securities Risk. The value of equity securities and related instruments may decline in response to adverse changes in the economy or the economic outlook; deterioration in investor sentiment; interest rate, currency, and commodity price fluctuations; adverse geopolitical, social or environmental developments; issuer and sector-specific considerations; unexpected trading activity among retail investors; or other factors. Market conditions may affect certain types of stocks to a greater extent than other types of stocks. If the stock market declines in value, the value of the Fund’s equity securities will also likely decline. Although prices can rebound, there is no assurance that values will return to previous levels.
Liquidity Risk. The Fund is exposed to liquidity risk when trading volume, lack of a market maker or trading partner, large position size, market conditions, or legal restrictions impair its ability to sell particular investments or to sell them at advantageous market prices. Consequently, the Fund may have to accept a lower price to sell an investment or continue to hold it or keep the position open, sell other investments to raise cash or abandon an investment opportunity, any of which could have a negative effect on the Fund’s performance. These effects may be exacerbated during times of financial or political stress.
Market Discount Risk. As with any security, the market value of the common shares may increase or decrease from the amount initially paid for the common shares. The Fund’s common shares have traded both at a premium and at a discount relative to NAV. The shares of closed-end management investment companies frequently trade at a discount from their NAV. This is a risk separate and distinct from the risk that the Fund’s NAV may decrease.
Money Market Instrument Risk. Money market instruments may be adversely affected by market and economic events, such as a sharp rise in prevailing short-term interest rates; adverse developments in the banking industry, which issues or guarantees many money market instruments; adverse economic, political or other developments affecting issuers of money market instruments; changes in the credit quality of issuers; and default by a counterparty.
Reinvestment Risk. Income from the Fund’s portfolio will decline if and when the Fund invests the proceeds from matured, traded or called debt obligations into lower yielding instruments.
Inflation Risk. Inflation risk is the risk that the value of assets or income from investments will be worth less in the future as inflation decreases the value of money. As inflation increases, the real value of the common shares and distributions thereon can decline. In addition, during any periods of rising inflation, dividend rates of preferred shares would likely increase, which would tend to further reduce returns to common shareholders. This risk is mitigated to some degree by the Fund’s investments in Senior Loans.
Risks Associated with Active Management. The success of the Fund’s investment strategy depends on portfolio management’s successful application of analytical skills and investment judgment. Active management involves subjective decisions and there is no guarantee that such decisions will produce the desired results or expected returns.
Recent Market Conditions. The outbreak of COVID-19 and efforts to contain its spread have resulted in closing borders, enhanced health screenings, changes to healthcare service preparation and delivery, quarantines, cancellations, disruptions to supply chains and customer activity, as well as general concern and uncertainty. The impact of this coronavirus, and the effects of other infectious illness outbreaks, epidemics and pandemics, may be short term or may continue for an extended period of time. Health crises caused by outbreaks of disease, such as the coronavirus outbreak, may exacerbate other pre-existing political, social and economic risks and disrupt normal market conditions and operations. For example, a global pandemic or other widespread health crisis could cause substantial market volatility and exchange trading suspensions and closures. In addition, the increasing interconnectedness of
markets around the world may result in many markets being affected by events or conditions in a single country or region or events affecting a single or small number of issuers. The coronavirus outbreak and public and private sector responses thereto have led to large portions of the populations of many countries working from home for indefinite periods of time, temporary or permanent layoffs, disruptions in supply chains, and lack of availability of certain goods. The impact of such responses could adversely affect the information technology and operational systems upon which the Fund and the Fund’s service providers rely, and could otherwise disrupt the ability of the employees of the Fund’s service providers to perform critical tasks relating to the Fund. Any such impact could adversely affect the Fund’s performance, or the performance of the securities in which the Fund invests and may lead to losses on your investment in the Fund.
Cybersecurity Risk. With the increased use of technologies by Fund service providers to conduct business, such as the Internet, the Fund is susceptible to operational, information security and related risks. The Fund relies on communications technology, systems, and networks to engage with clients, employees, accounts, shareholders, and service providers, and a cyber incident may inhibit the Fund’s ability to use these technologies. In general, cyber incidents can result from deliberate attacks or unintentional events. Cybersecurity failures by or breaches of the Fund’s investment adviser or administrator and other service providers (including, but not limited to, the custodian or transfer agent), and the issuers of securities in which the Fund invests, may disrupt and otherwise adversely affect their business operations. This may result in financial losses of the Fund, impede Fund trading, interfere with the Fund’s ability to calculate its NAV, limit a Fund shareholders’ ability to transact business or cause violations of applicable privacy and other laws, regulatory fines, penalties, reputational damage, reimbursement or other compensation costs, litigation costs, or additional compliance costs.
Geopolitical Risk. The increasing interconnectivity between global economies and markets increases the likelihood that events or conditions in one country, region, sector, industry or market or, with respect to one company, may adversely impact issuers in a different country, region, industry or market. For example, adverse developments in the banking or financial services could impact companies operating in various sectors or industries and adversely impact the Fund’s investments. Securities in a Fund’s portfolio may underperform due to inflation (or expectations for inflation), interest rates, global demand for particular products or resources, natural disasters, health emergencies (such as epidemics and pandemics), terrorism, regulatory events and governmental or quasi-governmental actions. The occurrence of global events similar to those in recent years, such as terrorist attacks around the world, natural disasters, health emergencies, social and political discord, war or debt crises and downgrades, among others, may result in market volatility and may have long term effects on both the U.S. and global financial markets. Other financial, economic and other global market and social developments or disruptions may result in similar adverse circumstances, and it is difficult to predict when similar events affecting the U.S. or global financial markets may occur, the effects that such events may have and the duration of those effects (which may last for extended periods). Such global events may negatively impact broad segments of businesses and populations, cause a significant negative impact on the performance of the Fund’s investments, adversely affect and increase the volatility of the Fund’s share price and/or exacerbate preexisting political, social and economic risks to the Fund. The Fund’s operations may be interrupted and any such event(s) could have a significant adverse impact on the value and risk profile of the Fund’s portfolio. There is a risk that you may lose money by investing in the Fund.
Regulatory Risk. To the extent that legislation or state or federal regulators that regulate certain financial institutions impose additional requirements or restrictions with respect to the ability of such institutions to make loans, particularly in connection with highly leveraged transactions, the availability of Senior Loans for investment may be adversely affected. Further, such legislation or regulation could depress the market value of Senior Loans.
Market Disruption. Global instability, war, geopolitical tensions and terrorist attacks in the United States and around the world have previously resulted, and may in the future result in market volatility and may have long-term effects on the United States and worldwide financial markets and may cause further economic uncertainties in the United States and worldwide. The Fund cannot predict the effects of significant future events on the global economy and securities markets. A similar disruption of the financial markets could impact interest rates, auctions, secondary trading, ratings, credit risk, inflation and other factors relating to the common shares. In particular, Non-Investment Grade Bonds and Senior Loans tend to be more volatile than higher rated fixed-income securities so that these events and any actions resulting from them may have a greater impact on the prices and volatility of Non-Investment Grade Bonds and Senior Loans than on higher rated fixed-income securities.
Anti-Takeover Provisions. The Fund’s Agreement and Declaration of Trust (the “Declaration of Trust”) and Amended and Restated By-Laws include provisions that could have the effect of limiting the ability of other persons or entities to acquire control of the Fund or to change the composition of its Board. For example, pursuant to the Fund’s Declaration of Trust, the Board is divided into three classes of Trustees with each class serving for a three-year term and certain types of transactions require the favorable vote of holders of at least 75% of the outstanding shares of the Fund.
General Fund Investing Risks. The Fund is not a complete investment program and there is no guarantee that the Fund will achieve its investment objective. It is possible to lose money by investing in the Fund. An investment in the Fund is not a deposit in a bank and is not insured or guaranteed by the Federal Deposit Insurance Corporation or any other government agency.
                                     
Share Price [Table Text Block]                
The following table sets forth for each of the periods indicated the high and low closing market prices for the common shares on the New York Stock Exchange, and the corresponding NAV per share and the premium or discount to NAV per share at which the Trust’s common shares were trading as of such date.
  Market Price ($)   NAV per Share on
Date of Market Price ($) 		  NAV Premium/(Discount) on
Date of Market Price (%)
Fiscal Quarter Ended High Low   High Low   High Low
June 30, 2023 5.46 5.21   6.11 6.00   (10.64) (13.17)
March 31, 2023 5.76 5.25   6.15 5.98   (6.34) (12.21)
December 31, 2022 5.51 5.12   6.00 5.92   (8.17) (13.51)
September 30, 2022 5.86 5.24   6.36 6.01   (7.86) (12.81)
June 30, 2022 6.44 5.37   6.80 6.21   (5.29) (13.53)
March 31, 2022 7.00 6.07   6.94 6.64   0.86 (8.58)
December 31, 2021 7.20 6.56   6.97 6.88   3.30 (4.65)
September 30, 2021 7.12 6.63   6.99 6.94   1.86 (4.42)
                                     
Income Risk [Member]                                                        
General Description of Registrant [Abstract]                                                        
Risk [Text Block]                
Income Risk. The income investors receive from the Fund is based primarily on the interest it earns from its investments, which can vary widely over the short and long-term. If prevailing market interest rates drop, investors’ income from the Fund could drop as well. The Fund’s income could also be affected adversely when prevailing short-term interest rates increase and the Fund is utilizing leverage, although this risk is mitigated by the Fund’s investment in Senior Loans, which pay floating-rates of interest.
                                      
Market Risk [Member]                                                        
General Description of Registrant [Abstract]                                                        
Risk [Text Block]                
Market Risk. The value of investments held by the Fund may increase or decrease in response to social, economic, political, financial, public health crises or other disruptive events (whether real, expected or perceived) in the U.S. and global markets and include events such as war, natural disasters, epidemics and pandemics, terrorism, conflicts and social unrest. These events may negatively impact broad segments of businesses and populations and may exacerbate pre-existing risks to the Fund. The frequency and magnitude of resulting changes in the value of the Fund’s investments cannot be predicted. Certain securities and other investments held by the Fund may experience increased volatility, illiquidity, or other potentially adverse effects in reaction to changing market conditions. Monetary and/or fiscal actions taken by U.S. or foreign governments to stimulate or stabilize the global economy may not be effective and could lead to high market volatility. No active trading market may exist for certain investments held by the Fund, which may impair the ability of the Fund to sell or to realize the current valuation of such investments in the event of the need to liquidate such assets.
                                      
Senior Loans Risk [Member]                                                        
General Description of Registrant [Abstract]                                                        
Risk [Text Block]                
Senior Loans Risk. The risks associated with Senior Loans are similar to the risks of Non-Investment Grade Bonds (discussed below), although Senior Loans are typically senior and secured in contrast to Non-Investment Grade Bonds, which are often subordinated and unsecured. Senior Loans’ higher standing has historically resulted in generally higher recoveries in the event of a corporate reorganization or other restructuring. In addition, because their interest rates are adjusted for changes in short-term interest rates, Senior Loans generally have less interest rate risk than Non-Investment Grade Bonds, which are typically fixed rate. The Fund’s investments in Senior Loans are typically below investment grade and are considered speculative because of the credit risk of their issuers. Such companies are more likely to default on their payments of interest and principal owed to the Fund, and such defaults could reduce the Fund’s NAV and income distributions. An economic downturn generally leads to a higher non-payment rate, and a debt obligation may lose
significant value before a default occurs. Moreover, any specific collateral used to secure a loan may decline in value or lose all its value or become illiquid, which would adversely affect the loan’s value.  “Junior Loans” are secured and unsecured subordinated loans, Second Lien loans and subordinate bridge loans. Senior Loans and Junior Loans are referred to together herein as “loans.”
Loans and other debt securities are also subject to the risk of price declines and to increases in prevailing interest rates, although floating-rate debt instruments are less exposed to this risk than fixed-rate debt instruments. Interest rate changes may also increase prepayments of debt obligations and require the Fund to invest assets at lower yields.
Loans are traded in a private, unregulated inter-dealer or inter-bank resale market and are generally subject to contractual restrictions that must be satisfied before a loan can be bought or sold. These restrictions may impede the Fund’s ability to buy or sell loans (thus affecting their liquidity) and may negatively impact the transaction price. See also “Market Risk” above. It also may take longer than seven days for transactions in loans to settle. The types of covenants included in loan agreements generally vary depending on market conditions, the creditworthiness of the issuer, the nature of the collateral securing the loan and possibly other factors. Loans with fewer covenants that restrict activities of the borrower may provide the borrower with more flexibility to take actions that may be detrimental to the loan holders and provide fewer investor protections in the event of such actions or if covenants are breached. The Fund may experience relatively greater realized or unrealized losses or delays and expense in enforcing its rights with respect to loans with fewer restrictive covenants. Loans to entities located outside of the U.S. may have substantially different lender protections and covenants as compared to loans to U.S. entities and may involve greater risks.  The Fund may have difficulties and incur expense enforcing its rights with respect to non-U.S. loans and such loans could be subject to bankruptcy laws that are materially different than in the U.S.  Loans may be structured such that they are not securities under securities law, and in the event of fraud or misrepresentation by a borrower, lenders may not have the protection of the anti-fraud provisions of the federal securities laws. Loans are also subject to risks associated with other types of income investments, including credit risk and risks of lower rated investments.
                                      
Additional Risks of Loans [Member]                                                        
General Description of Registrant [Abstract]                                                        
Risk [Text Block]                
Additional Risks of Loans. Loans are traded in a private, unregulated inter-dealer or inter-bank resale market and are generally subject to contractual restrictions that must be satisfied before a loan can be bought or sold. These restrictions may impede the Fund’s ability to buy or sell loans (thus affecting their liquidity) and may negatively impact the transaction price. See also “Market Risk” above. It also may take longer than seven days for transactions in loans to settle. The types of covenants included in loan agreements generally vary depending on market conditions, the creditworthiness of the issuer, the nature of the collateral securing the loan and possibly other factors. Loans with fewer covenants that restrict activities of the borrower may provide the borrower with more flexibility to take actions that may be detrimental to the loan holders and provide fewer investor protections in the event of such actions or if covenants are breached. The Fund may experience relatively greater realized or unrealized losses or delays and expense in enforcing its rights with respect to loans with fewer restrictive covenants. Loans to entities located outside of the U.S. may have substantially different lender protections and covenants as compared to loans to U.S. entities and may involve greater risks. The Fund may have difficulties and incur expense enforcing its rights with respect to non-U.S. loans and such loans could be subject to bankruptcy laws that are materially different than in the U.S. Loans may be structured such that they are not securities under securities law, and in the event of fraud or misrepresentation by a borrower, lenders may not have the protection of the anti-fraud provisions of the federal securities laws. Loans are also subject to risks associated with other types of income investments, including credit risk and risks of lower rated investments.
                                      
Lower Rated Investments Risk [Member]                                                        
General Description of Registrant [Abstract]                                                        
Risk [Text Block]                
Lower Rated Investments Risk. Investments rated below investment grade and comparable unrated investments (sometimes referred to as “junk”) are speculative because of increased credit risk relative to other fixed income investments. Changes in economic conditions or other circumstances typically have a greater effect on the ability of issuers of lower rated investments to make principal and interest payments than they do on issuers of higher rated investments. An economic downturn generally leads to a higher non-payment rate, and a lower rated investment may lose significant value before a default occurs. Lower rated investments typically are subject to greater price volatility and illiquidity than higher rated investments.
                                      
Interest Rate Risks [Member]                                                        
General Description of Registrant [Abstract]                                                        
Risk [Text Block]                
Interest Rate Risk. In general, the value of income securities will fluctuate based on changes in interest rates. The value of these securities is likely to increase when interest rates fall and decline when interest rates rise. Duration measures the time-weighted expected cash flows of a fixed-income security, while maturity refers to the amount of time until a fixed-income security matures. Generally, securities with longer durations or maturities are more sensitive to changes in interest rates than securities with shorter durations or maturities, causing them to be more volatile. Conversely, fixed-income securities with shorter durations or maturities will be less volatile but may provide lower returns than fixed-income securities with longer durations or maturities. The impact of interest rate changes is significantly less for floating-rate instruments that have relatively short periodic rate resets (e.g., ninety days or less). In a rising interest rate environment, the duration of income securities that have the ability to be prepaid or called by the issuer may be extended. In a declining interest rate environment, the proceeds from prepaid or maturing instruments may have to be reinvested at a lower interest rate.
                                      
LIBOR Risk [Member]                                                        
General Description of Registrant [Abstract]                                                        
Risk [Text Block]                
LIBOR Risk. The London Interbank Offered Rate or LIBOR historically has been used throughout global banking and financial industries to determine interest rates for a variety of financial instruments (such as debt instruments and derivatives) and borrowing arrangements. Upon a determination by regulators to phase out the use of LIBOR, market participants have been transitioning to the use of alternative reference rates over the past few years.  As of June 30, 2023, the administrator of LIBOR ceased publishing LIBOR settings. In addition, global regulators have announced that, with limited exceptions, no new LIBOR-based contracts should be entered into after 2021. Certain instruments held by the Fund have been subject to an interest rate based on LIBOR. Although the transition process away from LIBOR has become increasingly well defined, the impact on certain debt securities, derivatives and other financial instruments that utilize LIBOR remains uncertain. The transition process may involve, among other things, increased volatility or illiquidity in markets for instruments that were historically based on LIBOR, such as floating-rate debt obligations. Any such effects of the transition away from LIBOR and the adoption of alternative reference rates, as well as other unforeseen effects, could result in losses to the Fund. Furthermore, the risks associated with the expected discontinuation of LIBOR and transition to replacement rates may be exacerbated if an orderly transition to an alternative reference rate is not completed in a timely manner.
                                      
Non Investment Grade Bonds Risk [Member]                                                        
General Description of Registrant [Abstract]                                                        
Risk [Text Block]                
Non-Investment Grade Bonds Risk. The Fund’s investments in Non-Investment Grade Bonds, commonly referred to as “junk bonds,” are predominantly speculative because of the credit risk of their issuers. While offering a greater potential opportunity for capital appreciation and higher yields, Non-Investment Grade Bonds typically entail greater potential price volatility and may be less liquid than higher-rated securities. Issuers of Non-Investment Grade Bonds are more likely to default on their payments of interest and principal owed to the Fund, and such defaults will reduce the Fund’s NAV and income distributions. The prices of these lower rated obligations are more sensitive to negative developments than higher rated securities. Adverse business conditions, such as a decline in the issuer’s revenues or an economic downturn, generally lead to a higher non-payment rate. In addition, a security may lose significant value before a default occurs as the market adjusts to expected higher non-payment rates.
                                      
Issuer Risk [Member]                                                        
General Description of Registrant [Abstract]                                                        
Risk [Text Block]                
Issuer Risk. The value of corporate income-producing securities held by the Fund may decline for a number of reasons, which directly relate to the issuer, such as management performance, financial leverage and reduced demand for the issuer’s goods and services.
                                      
Leverage Risk [Member]                                                        
General Description of Registrant [Abstract]                                                        
Risk [Text Block]                
Leverage Risk. Leverage, including leverage from the issuance of preferred shares and borrowings, creates risks, including the likelihood of greater volatility of NAV and market price of, and distributions from, the common shares and the risk that fluctuations in dividend rates on preferred shares and in the costs of borrowings may affect the return to common shareholders. To the extent the income derived from investments purchased with funds received from leverage exceeds the cost of leverage, the Fund’s distributions will be greater than if leverage had not been used. Conversely, if the income from the investments purchased with such funds is not sufficient to cover the cost of leverage, the amount of income available for distribution to common shareholders will be less than if leverage had not been used. In the latter case, the investment adviser may nevertheless determine to maintain the Fund’s leveraged position if it deems such action to be appropriate. While the Fund has preferred shares or borrowings outstanding, an increase in short-term rates would also result in an increased cost of leverage, which would adversely affect the Fund’s income available for distribution. In connection with its borrowings and preferred shares, the Fund will be required to maintain specified asset coverage by applicable federal securities laws and (as applicable) the terms of the preferred shares and its credit facility. The Fund may be required to dispose of portfolio investments on unfavorable terms if market fluctuations or other factors cause the required asset coverage to be less than the prescribed amount. There can be no assurance that a leveraging strategy will be successful.
                                      
Foreign Investment Risk [Member]                                                        
General Description of Registrant [Abstract]                                                        
Risk [Text Block]                
Foreign Investment Risk. Foreign investments can be adversely affected by political, economic and market developments abroad, including the imposition of economic and other sanctions by the United States or another country against a particular country or countries, organizations, entities and/or individuals. There may be less publicly available information about foreign issuers because they may not be subject to reporting practices, requirements or regulations comparable to those to which United States companies are subject. Adverse changes in investment regulations, capital requirements or exchange controls could adversely affect the value of the Fund’s investments. Foreign markets may be smaller, less liquid and more volatile than the major markets in the United States, and as a result, Fund share values may be more volatile. Trading in foreign markets typically involves higher expense than trading in the United States. The Fund may have difficulties enforcing its legal or contractual rights in a foreign country.
                                      
Emerging Markets Investment Risk [Member]                                                        
General Description of Registrant [Abstract]                                                        
Risk [Text Block]                
Emerging Markets Investment Risk. Investment markets within emerging market countries are typically smaller, less liquid, less developed and more volatile than those in more developed markets like the United States, and may be focused in certain sectors. Emerging market securities often involve greater risks than developed market securities. The information available about an emerging market issuer may be less reliable than for comparable issuers in more developed capital markets.
                                      
Currency Risk [Member]                                                        
General Description of Registrant [Abstract]                                                        
Risk [Text Block]                
Currency Risk. Exchange rates for currencies fluctuate daily. The value of foreign investments may be affected favorably or unfavorably by changes in currency exchange rates in relation to the U.S. dollar. Currency markets generally are not as regulated as securities markets and currency transactions are subject to settlement, custodial and other operational risks.
                                      
Derivatives Risk [Member]                                                        
General Description of Registrant [Abstract]                                                        
Risk [Text Block]                
Derivatives Risk. The Fund’s exposure to derivatives involves risks different from, or possibly greater than, the risks associated with investing directly in securities and other investments. The use of derivatives can lead to losses because of adverse movements in the price or value of the security, instrument, index, currency, commodity, economic indicator or event underlying a derivative (“reference instrument”), due to failure of a counterparty or due to tax or regulatory constraints. Derivatives may create leverage in the Fund, which represents a non-cash exposure to the underlying reference instrument. Leverage can increase both the risk and return potential of the Fund. Derivatives risk may be more significant when derivatives are used to enhance return or as a substitute for a cash investment position, rather than solely to hedge the risk of a position held by the Fund. Use of derivatives involves the exercise of specialized skill and judgment, and a transaction may be unsuccessful in whole or in part because of market behavior or unexpected events. Changes in the value of a derivative (including one used for hedging) may not correlate perfectly with the underlying reference instrument. Derivative instruments traded in over-the-counter markets may be difficult to value, may be illiquid, and may be subject to wide swings in valuation caused by changes in the value of the underlying reference instrument. If a derivative’s counterparty is unable to honor its commitments, the value of Fund shares may decline and the Fund could experience delays in (or be unable to achieve) the return of collateral or other assets held by the counterparty. The loss on derivative transactions may substantially exceed the initial investment. A derivative investment also involves the risks relating to the reference instrument underlying the investment.
                                      
U S Government Securities Risk [Member]                                                        
General Description of Registrant [Abstract]                                                        
Risk [Text Block]                
U.S. Government Securities Risk. Although certain U.S. Government sponsored agencies (such as the Federal Home Loan Mortgage Corporation and the Federal National Mortgage Association) may be chartered or sponsored by acts of Congress, their securities are neither issued nor guaranteed by the U.S. Treasury. U.S. Treasury securities generally have a lower return than other obligations because of their higher credit quality and market liquidity.
                                      
Pooled Investment Vehicles Risk [Member]                                                        
General Description of Registrant [Abstract]                                                        
Risk [Text Block]                
Pooled Investment Vehicles Risk. Pooled investment vehicles are open- and closed-end investment companies and exchange-traded funds (“ETFs”). Pooled investment vehicles are subject to the risks of investing in the underlying securities or other investments.  Shares of closed-end investment companies and ETFs may trade at a premium or discount to NAV and are subject to secondary market trading risks.  In addition, the Fund will bear a pro rata portion of the operating expenses of a pooled investment vehicle in which it invests.
                                      
Equity Securities Risk [Member]                                                        
General Description of Registrant [Abstract]                                                        
Risk [Text Block]                
Equity Securities Risk. The value of equity securities and related instruments may decline in response to adverse changes in the economy or the economic outlook; deterioration in investor sentiment; interest rate, currency, and commodity price fluctuations; adverse geopolitical, social or environmental developments; issuer and sector-specific considerations; unexpected trading activity among retail investors; or other factors. Market conditions may affect certain types of stocks to a greater extent than other types of stocks. If the stock market declines in value, the value of the Fund’s equity securities will also likely decline. Although prices can rebound, there is no assurance that values will return to previous levels.
                                      
Liquidity Risk [Member]                                                        
General Description of Registrant [Abstract]                                                        
Risk [Text Block]                
Liquidity Risk. The Fund is exposed to liquidity risk when trading volume, lack of a market maker or trading partner, large position size, market conditions, or legal restrictions impair its ability to sell particular investments or to sell them at advantageous market prices. Consequently, the Fund may have to accept a lower price to sell an investment or continue to hold it or keep the position open, sell other investments to raise cash or abandon an investment opportunity, any of which could have a negative effect on the Fund’s performance. These effects may be exacerbated during times of financial or political stress.
                                      
Market Discount Risk [Member]                                                        
General Description of Registrant [Abstract]                                                        
Risk [Text Block]                
Market Discount Risk. As with any security, the market value of the common shares may increase or decrease from the amount initially paid for the common shares. The Fund’s common shares have traded both at a premium and at a discount relative to NAV. The shares of closed-end management investment companies frequently trade at a discount from their NAV. This is a risk separate and distinct from the risk that the Fund’s NAV may decrease.
                                      
Money Market Instrument Risk [Member]                                                        
General Description of Registrant [Abstract]                                                        
Risk [Text Block]                
Money Market Instrument Risk. Money market instruments may be adversely affected by market and economic events, such as a sharp rise in prevailing short-term interest rates; adverse developments in the banking industry, which issues or guarantees many money market instruments; adverse economic, political or other developments affecting issuers of money market instruments; changes in the credit quality of issuers; and default by a counterparty.
                                      
Reinvestment Risk [Member]                                                        
General Description of Registrant [Abstract]                                                        
Risk [Text Block]                
Reinvestment Risk. Income from the Fund’s portfolio will decline if and when the Fund invests the proceeds from matured, traded or called debt obligations into lower yielding instruments.
                                      
Inflation Risk [Member]                                                        
General Description of Registrant [Abstract]                                                        
Risk [Text Block]                
Inflation Risk. Inflation risk is the risk that the value of assets or income from investments will be worth less in the future as inflation decreases the value of money. As inflation increases, the real value of the common shares and distributions thereon can decline. In addition, during any periods of rising inflation, dividend rates of preferred shares would likely increase, which would tend to further reduce returns to common shareholders. This risk is mitigated to some degree by the Fund’s investments in Senior Loans.
                                      
Risks Associated with Active Management [Member]                                                        
General Description of Registrant [Abstract]                                                        
Risk [Text Block]                
Risks Associated with Active Management. The success of the Fund’s investment strategy depends on portfolio management’s successful application of analytical skills and investment judgment. Active management involves subjective decisions and there is no guarantee that such decisions will produce the desired results or expected returns.
                                      
Recent Market Conditions [Member]                                                        
General Description of Registrant [Abstract]                                                        
Risk [Text Block]                
Recent Market Conditions. The outbreak of COVID-19 and efforts to contain its spread have resulted in closing borders, enhanced health screenings, changes to healthcare service preparation and delivery, quarantines, cancellations, disruptions to supply chains and customer activity, as well as general concern and uncertainty. The impact of this coronavirus, and the effects of other infectious illness outbreaks, epidemics and pandemics, may be short term or may continue for an extended period of time. Health crises caused by outbreaks of disease, such as the coronavirus outbreak, may exacerbate other pre-existing political, social and economic risks and disrupt normal market conditions and operations. For example, a global pandemic or other widespread health crisis could cause substantial market volatility and exchange trading suspensions and closures. In addition, the increasing interconnectedness of
markets around the world may result in many markets being affected by events or conditions in a single country or region or events affecting a single or small number of issuers. The coronavirus outbreak and public and private sector responses thereto have led to large portions of the populations of many countries working from home for indefinite periods of time, temporary or permanent layoffs, disruptions in supply chains, and lack of availability of certain goods. The impact of such responses could adversely affect the information technology and operational systems upon which the Fund and the Fund’s service providers rely, and could otherwise disrupt the ability of the employees of the Fund’s service providers to perform critical tasks relating to the Fund. Any such impact could adversely affect the Fund’s performance, or the performance of the securities in which the Fund invests and may lead to losses on your investment in the Fund.
                                      
Cybersecurity Risk [Member]                                                        
General Description of Registrant [Abstract]                                                        
Risk [Text Block]                
Cybersecurity Risk. With the increased use of technologies by Fund service providers to conduct business, such as the Internet, the Fund is susceptible to operational, information security and related risks. The Fund relies on communications technology, systems, and networks to engage with clients, employees, accounts, shareholders, and service providers, and a cyber incident may inhibit the Fund’s ability to use these technologies. In general, cyber incidents can result from deliberate attacks or unintentional events. Cybersecurity failures by or breaches of the Fund’s investment adviser or administrator and other service providers (including, but not limited to, the custodian or transfer agent), and the issuers of securities in which the Fund invests, may disrupt and otherwise adversely affect their business operations. This may result in financial losses of the Fund, impede Fund trading, interfere with the Fund’s ability to calculate its NAV, limit a Fund shareholders’ ability to transact business or cause violations of applicable privacy and other laws, regulatory fines, penalties, reputational damage, reimbursement or other compensation costs, litigation costs, or additional compliance costs.
                                      
Geopolitical Risk [Member]                                                        
General Description of Registrant [Abstract]                                                        
Risk [Text Block]                
Geopolitical Risk. The increasing interconnectivity between global economies and markets increases the likelihood that events or conditions in one country, region, sector, industry or market or, with respect to one company, may adversely impact issuers in a different country, region, industry or market. For example, adverse developments in the banking or financial services could impact companies operating in various sectors or industries and adversely impact the Fund’s investments. Securities in a Fund’s portfolio may underperform due to inflation (or expectations for inflation), interest rates, global demand for particular products or resources, natural disasters, health emergencies (such as epidemics and pandemics), terrorism, regulatory events and governmental or quasi-governmental actions. The occurrence of global events similar to those in recent years, such as terrorist attacks around the world, natural disasters, health emergencies, social and political discord, war or debt crises and downgrades, among others, may result in market volatility and may have long term effects on both the U.S. and global financial markets. Other financial, economic and other global market and social developments or disruptions may result in similar adverse circumstances, and it is difficult to predict when similar events affecting the U.S. or global financial markets may occur, the effects that such events may have and the duration of those effects (which may last for extended periods). Such global events may negatively impact broad segments of businesses and populations, cause a significant negative impact on the performance of the Fund’s investments, adversely affect and increase the volatility of the Fund’s share price and/or exacerbate preexisting political, social and economic risks to the Fund. The Fund’s operations may be interrupted and any such event(s) could have a significant adverse impact on the value and risk profile of the Fund’s portfolio. There is a risk that you may lose money by investing in the Fund.
                                      
Regulatory Risk [Member]                                                        
General Description of Registrant [Abstract]                                                        
Risk [Text Block]                
Regulatory Risk. To the extent that legislation or state or federal regulators that regulate certain financial institutions impose additional requirements or restrictions with respect to the ability of such institutions to make loans, particularly in connection with highly leveraged transactions, the availability of Senior Loans for investment may be adversely affected. Further, such legislation or regulation could depress the market value of Senior Loans.
                                      
Market Disruption [Member]                                                        
General Description of Registrant [Abstract]                                                        
Risk [Text Block]                
Market Disruption. Global instability, war, geopolitical tensions and terrorist attacks in the United States and around the world have previously resulted, and may in the future result in market volatility and may have long-term effects on the United States and worldwide financial markets and may cause further economic uncertainties in the United States and worldwide. The Fund cannot predict the effects of significant future events on the global economy and securities markets. A similar disruption of the financial markets could impact interest rates, auctions, secondary trading, ratings, credit risk, inflation and other factors relating to the common shares. In particular, Non-Investment Grade Bonds and Senior Loans tend to be more volatile than higher rated fixed-income securities so that these events and any actions resulting from them may have a greater impact on the prices and volatility of Non-Investment Grade Bonds and Senior Loans than on higher rated fixed-income securities.
                                      
Anti Takeover Provisions [Member]                                                        
General Description of Registrant [Abstract]                                                        
Risk [Text Block]                
Anti-Takeover Provisions. The Fund’s Agreement and Declaration of Trust (the “Declaration of Trust”) and Amended and Restated By-Laws include provisions that could have the effect of limiting the ability of other persons or entities to acquire control of the Fund or to change the composition of its Board. For example, pursuant to the Fund’s Declaration of Trust, the Board is divided into three classes of Trustees with each class serving for a three-year term and certain types of transactions require the favorable vote of holders of at least 75% of the outstanding shares of the Fund.
                                      
General Fund Investing Risks [Member]                                                        
General Description of Registrant [Abstract]                                                        
Risk [Text Block]                
General Fund Investing Risks. The Fund is not a complete investment program and there is no guarantee that the Fund will achieve its investment objective. It is possible to lose money by investing in the Fund. An investment in the Fund is not a deposit in a bank and is not insured or guaranteed by the Federal Deposit Insurance Corporation or any other government agency.
                                     
Credit Risks [Member]                                                        
General Description of Registrant [Abstract]                                                        
Risk [Text Block]                
Credit Risk. Investments in fixed-income and other debt obligations, including loans, (referred to below as “debt instruments”) are subject to the risk of non-payment of scheduled principal and interest. Changes in economic conditions or other circumstances may reduce the capacity of the party obligated to make principal and interest payments on such instruments and may lead to defaults. Such non-payments and defaults may reduce the value of Fund shares and income distributions. The value of debt instruments also may decline because of concerns about the issuer’s ability to make principal and interest payments. In addition, the credit ratings of debt instruments may be lowered if the financial condition of the party obligated to make payments with respect to such instruments deteriorates. In the event of bankruptcy of the issuer of a debt instrument, the Fund could experience delays or limitations with respect to its ability to realize the benefits of any collateral securing the instrument. In order to enforce its rights in the event of a default, bankruptcy or similar situation, the Fund may be required to retain legal or similar counsel, which may increase the Fund’s operating expenses and adversely affect NAV. Due to their lower place in the borrower’s capital structure, Junior Loans involve a higher degree of overall risk than Senior Loans to the same borrower.
                                      
Prepayment Risks [Member]                                                        
General Description of Registrant [Abstract]                                                        
Risk [Text Block]                
Prepayment Risk. During periods of declining interest rates or for other purposes, Borrowers may exercise their option to prepay principal earlier than scheduled. For fixed-income securities, such payments often occur during periods of declining interest rates, forcing the Fund to reinvest in lower yielding securities. This is known as call or prepayment risk. Non-Investment Grade Bonds frequently have call features that allow the issuer to redeem the security at dates prior to its stated maturity at a specified price (typically greater than par) only if certain prescribed conditions are met (“call protection”). An issuer may redeem a Non-Investment Grade Bond if, for example, the issuer can refinance the debt at a lower cost due to declining interest rates or an improvement in the credit standing of the issuer. Senior Loans typically have no such call protection. For premium bonds (bonds acquired at prices that exceed their par or principal value) purchased by the Fund, prepayment risk may be enhanced.
                                      
Common Shares [Member]                                                        
Other Annual Expenses [Abstract]                                                        
Basis of Transaction Fees, Note [Text Block]                 Percentage of net assets attributable to common shares                                      
General Description of Registrant [Abstract]                                                        
Lowest Price or Bid $ 5.21 $ 5.25 $ 5.12 $ 5.24 $ 5.37 $ 6.07 $ 6.56 $ 6.63                                        
Highest Price or Bid 5.46 5.76 5.51 5.86 6.44 7.00 7.20 7.12                                        
Lowest Price or Bid, NAV 6.00 5.98 5.92 6.01 6.21 6.64 6.88 6.94                                        
Highest Price or Bid, NAV $ 6.11 $ 6.15 $ 6.00 $ 6.36 $ 6.80 $ 6.94 $ 6.97 $ 6.99                                        
Highest Price or Bid, Premium (Discount) to NAV [Percent] (10.64%) (6.34%) (8.17%) (7.86%) (5.29%) 0.86% 3.30% 1.86%                                        
Lowest Price or Bid, Premium (Discount) to NAV [Percent] (13.17%) (12.21%) (13.51%) (12.81%) (13.53%) (8.58%) (4.65%) (4.42%)                                        
Capital Stock, Long-Term Debt, and Other Securities [Abstract]                                                        
Security Title [Text Block]                 Common Shares                                      
Outstanding Security, Held [Shares]                 17,538,858                                      
Offering expenses [Member]                                                        
Other Annual Expenses [Abstract]                                                        
Basis of Transaction Fees, Note [Text Block]                 as a percentage of offering price                                      
Notes Payable [Member]                                                        
Financial Highlights [Abstract]                                                        
Senior Securities Amount                                     $ 20,000 $ 26,000 $ 103,000 $ 95,000 $ 103,000 $ 93,000 $ 92,000 $ 25,000 $ 60,000 $ 65,000
Senior Securities Coverage per Unit [8]                                     $ 8,235 $ 6,531 $ 3,903 $ 3,866 $ 3,957 $ 4,587 $ 4,613 $ 15,472 $ 7,267 $ 6,970
Preferred Shares [Member]                                                        
Financial Highlights [Abstract]                                                        
Senior Securities Amount                                     $ 1,504 $ 1,504 $ 1,504 $ 1,504 $ 1,504 $ 2,464 $ 2,464 $ 4,400 $ 4,400 $ 4,400
Senior Securities Coverage per Unit [9]                                     $ 71,481 $ 66,752 $ 71,484 $ 69,242 $ 72,464 $ 68,989 $ 69,078 $ 71,629 $ 64,119 $ 64,721
Preferred Stock Liquidating Preference [10]                                     $ 25,000 $ 25,000 $ 25,000 $ 25,000 $ 25,000 $ 25,000 $ 25,000 $ 25,000 $ 25,000 $ 25,000
Senior Securities Average Market Value per Unit [10]                 $ 25,000 $ 25,000 $ 25,000 $ 25,000 $ 25,000 $ 25,000 $ 25,000 $ 25,000 $ 25,000 $ 25,000                    
[1] If common shares are sold to or through underwriters, the Prospectus Supplement will set forth any applicable sales load.
[2] You will be charged a $5.00 service charge and pay brokerage charges if you direct the plan agent to sell your common shares held in a dividend reinvestment account.
[3] Eaton Vance Management (“EVM”) will pay the expenses of the offering (other than the applicable commissions); therefore, offering expenses are not included in the Summary of Fund Expenses. Offering expenses generally include, but are not limited to, the preparation, review and filing with the SEC of the Trust’s registration statement (including its current Prospectus Supplement, the accompanying Prospectus and Statement of Additional Information (“SAI”)), the preparation, review and filing of any associated marketing or similar materials, costs associated with the printing, mailing or other distribution of its current Prospectus Supplement, the accompanying Prospectus, SAI and/or marketing materials, associated filing fees, stock exchange listing fees, and legal and auditing fees associated with the offering.
[4] Stated as a percentage of average net assets attributable to common shares for the year ended June 30, 2023.
[5] The investment adviser fee paid by the Trust to EVM is based on the average weekly gross assets of the Trust, including all assets attributable to any form of investment leverage that the Trust may utilize. Accordingly, if the Trust were to increase investment leverage in the future, the investment adviser fee will increase as a percentage of net assets. Pursuant to the investment advisory agreement, the investment adviser fee was computed at an annual rate of 0.72% of the Trust’s average weekly gross assets through April 30, 2023 and beginning May 1, 2023, at 0.71% of the Trust’s average weekly gross assets, and is payable monthly. The annual investment adviser fee rate shall be reduced to the following as of the stated date: May 1, 2024: 0.70%, May 1, 2025: 0.69% and May 1, 2026: 0.55%.
[6] As of June 30, 2023, the outstanding borrowings represented approximately 12.15% leverage and the preferred shares represented approximately 22.83% leverage, totaling 34.98% leverage.
[7] Interest and fee expense relates to the notes payable.
[8] Calculated by subtracting the Trust’s total liabilities (not including the notes payable and preferred shares) from the Trust’s total assets, and dividing the result by the notes payable balance in thousands.
[9] Calculated by subtracting the Trust’s total liabilities (not including the notes payable and preferred shares) from the Trust’s total assets, dividing the result by the sum of the value of the notes payable and liquidation value of the preferred shares, and multiplying the result by the liquidation value of one preferred share.
[10] Plus accumulated and unpaid dividends.
Eaton Vance Senior Income (NYSE:EVF)
Gráfico Histórico do Ativo
De Out 2024 até Nov 2024 Click aqui para mais gráficos Eaton Vance Senior Income.
Eaton Vance Senior Income (NYSE:EVF)
Gráfico Histórico do Ativo
De Nov 2023 até Nov 2024 Click aqui para mais gráficos Eaton Vance Senior Income.