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UNITED STATES
SECURITIES AND EXCHANGE COMMISSION
WASHINGTON, D.C. 20549
FORM 8-K
CURRENT REPORT
PURSUANT TO SECTION 13 OR 15(D) OF THE
SECURITIES EXCHANGE ACT OF 1934
Date of report (Date of earliest event reported): February 6, 2025
AFFILIATED MANAGERS GROUP, INC.
(Exact Name of Registrant as Specified in Its Charter)
Delaware
(State or Other Jurisdiction of Incorporation)
001-13459 04-3218510
(Commission File Number) (IRS Employer Identification No.)
777 South Flagler Drive, West Palm Beach, Florida 33401
(Address of principal executive offices)
(800) 345-1100
(Registrant’s Telephone Number, Including Area Code)
N/A
(Former Name or Former Address, if Changed Since Last Report)
Check the appropriate box below if the Form 8-K filing is intended to simultaneously satisfy the filing obligation of the registrant under any of the following provisions (see General Instruction A.2. below):
☐Written communications pursuant to Rule 425 under the Securities Act (17 CFR 230.425)
☐Soliciting material pursuant to Rule 14a-12 under the Exchange Act (17 CFR 240.14a-12)
☐Pre-commencement communications pursuant to Rule 14d-2(b) under the Exchange Act (17 CFR 240.14d-2(b))
☐Pre-commencement communications pursuant to Rule 13e-4(c) under the Exchange Act (17 CFR 240.13e-4(c))
Securities registered pursuant to Section 12(b) of the Act:
Title of each classTrading Symbol(s)Name of each exchange on which registered
Common Stock ($0.01 par value)AMGNew York Stock Exchange
5.875% Junior Subordinated Notes due 2059MGRNew York Stock Exchange
4.750% Junior Subordinated Notes due 2060MGRBNew York Stock Exchange
4.200% Junior Subordinated Notes due 2061MGRDNew York Stock Exchange
6.750% Junior Subordinated Notes due 2064MGRENew York Stock Exchange
Indicate by check mark whether the registrant is an emerging growth company as defined in Rule 405 of the Securities Act of 1933 (§230.405 of this chapter) or Rule 12b-2 of the Securities Exchange Act of 1934 (§240.12b-2 of this chapter).
Emerging growth company    ☐
If an emerging growth company, indicate by check mark if the registrant has elected not to use the extended transition period for complying with any new or revised financial accounting standards provided pursuant to Section 13(a) of the Exchange Act.  ☐


ITEM 2.02Results of Operations and Financial Condition.
On February 6, 2025, Affiliated Managers Group, Inc. (the “Company”) issued a press release setting forth its financial and operating results for the quarter and year ended December 31, 2024. A copy of the press release is furnished as Exhibit 99.1 hereto, except for such portions which are filed, as noted below under Item 9.01.
 
ITEM 8.01Other Events.
The press release announced that the Company’s Board of Directors authorized and declared a quarterly dividend of $0.01 per share of common stock, payable March 4, 2025 to stockholders of record as of the close of business on February 18, 2025.

ITEM 9.01Financial Statements and Exhibits.
 
(d)Exhibits.
The financial highlights table set forth on page 1 and the financial tables set forth on pages 3 through 8 in Exhibit 99.1 hereto are “filed” for purposes of Section 18 of the Securities Exchange Act of 1934, as amended, and shall be deemed incorporated by reference into the filings of the Company under the Securities Act of 1933, as amended. The remaining information in Exhibit 99.1 is being “furnished” to the Securities and Exchange Commission as provided pursuant to General Instruction B.2 of Form 8-K.

Exhibit No.      Description
99.1 
104Cover Page Interactive Data File (the cover page tags are embedded within the Inline XBRL document).


2

SIGNATURES
Pursuant to the requirements of the Securities Exchange Act of 1934, the registrant has duly caused this report to be signed on its behalf by the undersigned hereunto duly authorized.
 
  AFFILIATED MANAGERS GROUP, INC.
Date: February 6, 2025  By:   /s/ Kavita Padiyar
   Name:    Kavita Padiyar
   Title: General Counsel and Corporate Secretary


3

amglogoa.gif
Exhibit 99.1
Investor and Media Relations  Patricia Figueroa
+1 (617) 747-3300
ir@amg.com
pr@amg.com



  
AMG Reports Financial and Operating Results for
the Fourth Quarter and Full Year 2024
    
Company reports EPS of $4.92, Economic EPS of $6.53 in the fourth quarter of 2024
EPS of $15.13, Economic EPS of $21.36 for the full year 2024
amgbulleta.gif
New partnership with NorthBridge Partners, a private markets manager specializing in industrial logistics real estate assets
amgbulleta.gif
Net income (controlling interest) of $512 million, Economic Net Income (controlling interest) of $702 million
amgbulleta.gif
10% full-year Economic Earnings per share growth reflects AMG’s ongoing strategic evolution and disciplined capital allocation strategy
amgbulleta.gif
Repurchased $700 million in common stock or approximately 13% of shares outstanding in 2024

WEST PALM BEACH, FL, February 6, 2025 — AMG, a strategic partner to leading independent investment management firms globally, today reported its financial and operating results for the fourth quarter and year ended December 31, 2024.

Jay C. Horgen, President and Chief Executive Officer of AMG, said:
“AMG delivered record Economic Earnings per share in 2024; growth of 10% relative to the prior year reflected the ongoing evolution of our business and the positive impact of our disciplined capital allocation strategy.

“In 2024, we continued to strategically evolve our business, increasing our exposure to alternatives, which further enhances our long-term growth prospects. AMG’s private markets Affiliates raised approximately $24 billion during the year, reflecting the ongoing demand for our Affiliates’ specialized strategies. Throughout the year we continued to invest our capital and resources alongside our Affiliates to develop new products for the U.S. wealth marketplace, including additional innovative alternative solutions across private markets and liquid alternatives.

“This morning, we announced our investment in NorthBridge Partners, a leading vertically integrated real estate manager with excellent forward prospects, given its deep expertise and targeted investment strategy in last-mile logistics, a high-growth sector benefiting from the expanding digital economy and evolving supply chain dynamics. Our partnership with NorthBridge broadens AMG’s participation in private markets and underscores our focus on investing in areas of secular growth. AMG's proven ability to magnify the competitive advantages of partner-owned firms, while also preserving their independence, continues to differentiate AMG’s partnership model and is highly valued by prospective Affiliates.

“Our execution across each element of our growth strategy, including investing in new Affiliate partnerships, investing in our existing Affiliates, and investing in AMG's capabilities to magnify our Affiliates' success, is driving the evolution of our distinctive business profile. Given AMG’s proven strategic capabilities and 30-year track record of successful partnerships, our opportunities to invest in growth are expanding. With our ample financial flexibility and disciplined capital allocation framework, we enter 2025 in an excellent position to continue executing on our strategy, and create meaningful incremental shareholder value over time.”

FINANCIAL HIGHLIGHTSThree Months EndedYears Ended
(in millions, except as noted and per share data)12/31/202312/31/202412/31/202312/31/2024
Operating Performance Measures
AUM (at period end, in billions)$672.7 $707.9 $672.7 $707.9 
Average AUM (in billions)648.1 717.3 660.3 700.5 
Net client cash flows (in billions)(6.1)(8.3)(29.2)(13.9)
Aggregate fees1,560.9 1,509.2 5,066.6 5,236.0 
Financial Performance Measures
Net income (controlling interest)$196.2 $162.1 $672.9 $511.6 
Earnings per share (diluted)(1)
5.15 4.92 17.42 15.13 
Supplemental Performance Measures(2)
Adjusted EBITDA (controlling interest)$296.2 $281.7 $935.7 $973.1 
Economic net income (controlling interest)242.9 205.8 717.8 701.6 
Economic earnings per share6.86 6.53 19.48 21.36 

For additional information on our Supplemental Performance Measures, including reconciliations to GAAP, see the Financial Tables and Notes.



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Capital Management
During the fourth quarter of 2024, the Company repurchased approximately $120 million in common stock, bringing full-year share repurchases to approximately $700 million. The Company also announced a fourth-quarter cash dividend of $0.01 per share of common stock, payable March 4, 2025 to stockholders of record as of the close of business on February 18, 2025.

About AMG
AMG (NYSE: AMG) is a strategic partner to leading independent investment management firms globally. AMG’s strategy is to generate long‐term value by investing in high-quality independent partner-owned firms, through a proven partnership approach, and allocating resources across AMG's unique opportunity set to the areas of highest growth and return. Through its distinctive approach, AMG magnifies its Affiliates' existing advantages and actively supports their independence and ownership culture. As of December 31, 2024, AMG’s aggregate assets under management were approximately $708 billion across a diverse range of private markets, liquid alternative, and differentiated long-only investment strategies. For more information, please visit the Company’s website at www.amg.com.
Conference Call, Replay and Presentation Information
A conference call will be held with AMG’s management at 8:30 a.m. Eastern time today. Parties interested in listening to the conference call should dial 1-877-407-8291 (U.S. calls) or 1-201-689-8345 (non-U.S. calls) shortly before the call begins.

The conference call will also be available for replay beginning approximately one hour after the conclusion of the call. To hear a replay of the call, please dial 1-877-660-6853 (U.S. calls) or 1-201-612-7415 (non-U.S. calls) and provide conference ID 13750674. The live call and replay of the session and a presentation highlighting the Company's performance can also be accessed via AMG’s website at https://ir.amg.com/.

Financial Tables Follow


- 2 -


ASSETS UNDER MANAGEMENT - STATEMENTS OF CHANGES (in billions)
AlternativesDifferentiated Long-Only
BY STRATEGY - QUARTER TO DATEPrivate MarketsLiquid AlternativesEquitiesMulti-Asset &
Fixed Income		Total
AUM, September 30, 2024$131.2 $135.3 $345.9 $116.0 $728.4 
Client cash inflows and commitments5.6 8.9 10.2 5.2 29.9 
Client cash outflows(0.1)(7.3)(25.8)(5.0)(38.2)
Net client cash flows5.5 1.6 (15.6)0.2 (8.3)
Market changes(0.2)3.5 (2.5)0.4 1.2 
Foreign exchange(0.5)(3.1)(6.3)(1.3)(11.2)
Realizations and distributions (net)(0.7)(0.2)(1.3)(0.1)(2.3)
Other 0.1 3.6 (4.0)0.4 0.1 
AUM, December 31, 2024$135.4 $140.7 $316.2 $115.6 $707.9 
AlternativesDifferentiated Long-Only
BY STRATEGY - YEAR TO DATEPrivate MarketsLiquid AlternativesEquitiesMulti-Asset &
Fixed Income		Total
AUM, December 31, 2023$114.8 $124.0 $329.4 $104.5 $672.7 
Client cash inflows and commitments23.7 27.5 38.1 22.1 111.4 
Client cash outflows(0.2)(25.6)(80.2)(19.3)(125.3)
Net client cash flows23.5 1.9 (42.1)2.8 (13.9)
New investments0.7 — — 0.7 1.4 
Market changes0.4 10.6 41.4 8.7 61.1 
Foreign exchange(0.3)(0.8)(4.6)(1.2)(6.9)
Realizations and distributions (net)(4.4)(0.5)(1.4)(0.3)(6.6)
Other 0.7 5.5 (6.5)0.4 0.1 
AUM, December 31, 2024$135.4 $140.7 $316.2 $115.6 $707.9 


- 3 -


CONSOLIDATED STATEMENTS OF INCOME
Three Months Ended
(in millions, except per share data)12/31/202312/31/2024
Consolidated revenue$502.7 $524.2 
Consolidated expenses:
Compensation and related expenses244.5 238.8 
Selling, general and administrative84.8 98.4 
Intangible amortization and impairments10.8 7.3 
Interest expense31.4 35.2 
Depreciation and other amortization3.0 4.0 
Other expenses (net)9.6 8.8 
Total consolidated expenses384.1 392.5 
Equity method income (net)(3)
125.7 124.5 
Affiliate Transaction gains(4)
— — 
Investment and other income29.8 17.5 
Income before income taxes274.1 273.7 
Income tax expense 29.8 52.6 
Net income244.3 221.1 
Net income (non-controlling interests)(48.1)(59.0)
Net income (controlling interest)$196.2 $162.1 
Average shares outstanding (basic)33.7 30.1 
Average shares outstanding (diluted)41.3 36.0 
Earnings per share (basic)$5.83 $5.39 
Earnings per share (diluted)(1)
$5.15 $4.92 
RECONCILIATIONS OF SUPPLEMENTAL PERFORMANCE MEASURES(2)
Three Months Ended
(in millions, except per share data)12/31/202312/31/2024
Net income (controlling interest)$196.2 $162.1 
Intangible amortization and impairments39.9 30.5 
Intangible-related deferred taxes 12.8 15.3 
Affiliate Transactions(4)
— — 
Other economic items(6.0)(2.1)
Economic net income (controlling interest)$242.9 $205.8 
Average shares outstanding (adjusted diluted) 35.4 31.5 
Economic earnings per share$6.86 $6.53 
Net income (controlling interest)$196.2 $162.1 
Interest expense31.4 35.2 
Income taxes34.5 54.9 
Intangible amortization and impairments39.9 30.5 
Affiliate Transactions(4)
— — 
Other items(5.8)(1.0)
Adjusted EBITDA (controlling interest)$296.2 $281.7 
See Notes for additional information.

- 4 -


CONSOLIDATED STATEMENTS OF INCOME
Years Ended
(in millions, except per share data)12/31/202312/31/2024
Consolidated revenue$2,057.8 $2,040.9 
Consolidated expenses:
Compensation and related expenses907.5 915.3 
Selling, general and administrative358.2 376.5 
Intangible amortization and impairments48.3 29.0 
Interest expense123.8 133.3 
Depreciation and other amortization13.0 13.4 
Other expenses (net)45.8 40.3 
Total consolidated expenses1,496.6 1,507.8 
Equity method income (net)(3)
280.0 312.7 
Affiliate Transaction gains(4)
133.1 — 
Investment and other income117.1 77.4 
Income before income taxes1,091.4 923.2 
Income tax expense185.3 182.6 
Net income906.1 740.6 
Net income (non-controlling interests)(233.2)(229.0)
Net income (controlling interest)$672.9 $511.6 
Average shares outstanding (basic)35.1 31.1 
Average shares outstanding (diluted)42.2 36.1 
Earnings per share (basic)$19.18 $16.45 
Earnings per share (diluted)(1)
$17.42 $15.13 
RECONCILIATIONS OF SUPPLEMENTAL PERFORMANCE MEASURES(2)
Years Ended
(in millions, except per share data)12/31/202312/31/2024
Net income (controlling interest)$672.9 $511.6 
Intangible amortization and impairments128.5 149.2 
Intangible-related deferred taxes 57.3 61.9 
Affiliate Transactions(4)
(122.1)— 
Other economic items(18.8)(21.1)
Economic net income (controlling interest)$717.8 $701.6 
Average shares outstanding (adjusted diluted) 36.8 32.8 
Economic earnings per share$19.48 $21.36 
Net income (controlling interest)$672.9 $511.6 
Interest expense123.8 133.3 
Income taxes185.2 187.9 
Intangible amortization and impairments128.5 149.2 
Affiliate Transactions(4)
(162.7)— 
Other items(12.0)(8.9)
Adjusted EBITDA (controlling interest)$935.7 $973.1 
See Notes for additional information.

- 5 -


CONSOLIDATED BALANCE SHEETS
Years Ended
(in millions)12/31/202312/31/2024
Assets
Cash and cash equivalents$813.6 $950.0 
Receivables368.4 409.7 
Investments941.9 595.6 
Goodwill2,523.6 2,504.9 
Acquired client relationships (net)1,812.4 1,777.8 
Equity method investments in Affiliates (net)2,288.5 2,246.6 
Fixed assets (net)67.3 57.6 
Other assets243.9 288.7 
Total assets$9,059.6 $8,830.9 
Liabilities and Equity
Payables and accrued liabilities$628.5 $639.1 
Debt2,537.5 2,620.2 
Deferred tax liability (net)463.8 520.5 
Other liabilities466.3 402.4 
Total liabilities4,096.1 4,182.2 
Redeemable non-controlling interests393.4 350.5 
Equity:
Common stock0.6 0.6 
Additional paid-in capital741.4 733.1 
Accumulated other comprehensive loss(167.6)(163.6)
Retained earnings6,389.6 6,899.8 
6,964.0 7,469.9 
Less: treasury stock, at cost(3,376.1)(4,124.6)
Total stockholders’ equity3,587.9 3,345.3 
Non-controlling interests982.2 952.9 
Total equity4,570.1 4,298.2 
Total liabilities and equity$9,059.6 $8,830.9 















- 6 -


Notes

(1)    Earnings per share (diluted) adjusts for the dilutive effect of the potential issuance of incremental shares of our common stock.

We assume the settlement of all of our Redeemable non-controlling interests using the maximum number of shares permitted under our arrangements. The issuance of shares and the related income acquired are excluded from the calculation if an assumed purchase of Redeemable non-controlling interests would be anti-dilutive to diluted earnings per share.

We are required to apply the if-converted method to our outstanding junior convertible securities when calculating Earnings per share (diluted). Under the if-converted method, shares that are issuable upon conversion are deemed outstanding, regardless of whether the securities are contractually convertible into our common stock at that time. For this calculation, the interest expense (net of tax) attributable to these dilutive securities is added back to Net income (controlling interest), reflecting the assumption that the securities have been converted. Issuable shares for these securities and related interest expense are excluded from the calculation if an assumed conversion would be anti-dilutive to diluted earnings per share.

The following table provides a reconciliation of the numerator and denominator used in the calculation of basic and diluted earnings per share:
Three Months Ended Years Ended
(in millions)12/31/202312/31/202412/31/202312/31/2024
Numerator
Net income (controlling interest)$196.2 $162.1 $672.9 $511.6 
Income from hypothetical settlement of Redeemable non-controlling interests, net of taxes12.9 11.7 49.0 20.5 
Interest expense on junior convertible securities, net of taxes3.4 3.4 13.4 13.4 
Net income (controlling interest), as adjusted$212.5 $177.2 $735.3 $545.5 
Denominator
Average shares outstanding (basic)33.7 30.1 35.1 31.1 
Effect of dilutive instruments:
Stock options and restricted stock units1.7 1.4 1.7 1.7 
Hypothetical issuance of shares to settle Redeemable non-controlling interests4.2 2.8 3.7 1.6 
Junior convertible securities1.7 1.7 1.7 1.7 
Average shares outstanding (diluted)41.3 36.0 42.2 36.1 

(2)    As supplemental information, we provide non-GAAP performance measures of Adjusted EBITDA (controlling interest), Economic net income (controlling interest), and Economic earnings per share. We believe that many investors use our Adjusted EBITDA (controlling interest) when comparing our financial performance to other companies in the investment management industry. Management utilizes these non-GAAP performance measures to assess our performance before our share of certain non-cash GAAP expenses primarily related to the acquisition of interests in Affiliates and to improve comparability between periods. Economic net income (controlling interest) and Economic earnings per share are used by management and our Board of Directors as our principal performance benchmarks, including as one of the measures for determining executive compensation. These non-GAAP performance measures are provided in addition to, but not as a substitute for, Net income (controlling interest), Earnings per share, or other GAAP performance measures. For additional information on our non-GAAP measures, see our most recent Annual and Quarterly Reports on Form 10-K and 10-Q, respectively, which are accessible on the SEC's website at www.sec.gov.

Adjusted EBITDA (controlling interest) represents our performance before our share of interest expense, income and certain non-income based taxes, depreciation, amortization, impairments, gains and losses related to Affiliate Transactions, and non-cash items such as certain Affiliate equity activity, gains and losses on our contingent payment obligations, and unrealized gains and losses on seed capital, general partner commitments, and other strategic investments. Adjusted EBITDA (controlling interest) is also adjusted to include realized economic gains and losses related to these seed capital, general partner commitments, and other strategic investments.

Under our Economic net income (controlling interest) definition, we adjust Net income (controlling interest) for our share of pre-tax intangible amortization and impairments related to intangible assets (including the portion attributable to equity method investments in Affiliates) because these expenses do not correspond to the changes in the value of these assets, which do not diminish predictably over time. We also adjust for deferred taxes attributable to intangible assets because we believe it is unlikely these accruals will be used to settle material tax obligations. Further, we adjust for gains and losses related to Affiliate Transactions, net of tax, and other economic items. Other economic items include certain Affiliate equity activity, gains and losses related to contingent payment obligations, tax windfalls and shortfalls from share-based compensation, unrealized gains and losses on seed capital, general partner commitments, and other strategic investments, and realized economic gains and losses related to these seed capital, general partner commitments, and other strategic investments.

Economic earnings per share represents Economic net income (controlling interest) divided by the Average shares outstanding (adjusted diluted). In this calculation, we exclude the potential shares issued upon settlement of Redeemable non-controlling interests from Average shares outstanding (adjusted diluted) because we intend to settle those obligations without issuing shares, consistent with all prior Affiliate equity purchase transactions. The potential share issuance in connection with our junior convertible securities is measured using a “treasury stock” method. Under this method, only the net number of shares of common stock equal to the value of the junior convertible securities in excess of par, if any, are deemed to be outstanding. We believe the inclusion of net shares under a treasury stock method best reflects the benefit of the increase in available capital resources (which

- 7 -

Notes (continued)

could be used to repurchase shares of our common stock) that occurs when these securities are converted and we are relieved of our debt obligation.

The following table provides a reconciliation of Average shares outstanding (adjusted diluted):
Three Months Ended Years Ended
(in millions)12/31/202312/31/202412/31/202312/31/2024
Average shares outstanding (diluted)41.3 36.0 42.2 36.1 
Hypothetical issuance of shares to settle Redeemable non-controlling interests(4.2)(2.8)(3.7)(1.6)
Junior convertible securities (1.7)(1.7)(1.7)(1.7)
Average shares outstanding (adjusted diluted)35.4 31.5 36.8 32.8 

(3)    The following table presents equity method earnings and equity method intangible amortization and impairments, which in aggregate form Equity method income (net):
Three Months EndedYears Ended
(in millions)12/31/202312/31/202412/31/202312/31/2024
Equity method earnings$158.3 $150.1 $375.6 $442.7 
Equity method intangible amortization and impairments(32.6)(25.6)(95.6)(130.0)
Equity method income (net)$125.7 $124.5 $280.0 $312.7 

(4)    The following table presents the impact of the completion of our previously announced sales of our equity interests in Veritable, LP to a third party in the third quarter of 2023, and Baring Private Equity Asia to EQT AB (“EQT”), a public company listed on Nasdaq Stockholm (EQT ST), in the fourth quarter of 2022, pursuant to which we received ordinary shares of EQT:

Three Months EndedYears Ended
(in millions)12/31/202312/31/202412/31/202312/31/2024
Affiliate Transaction gain$— $— $133.1 $— 
Investment and other income - Realized gains on EQT shares— — 29.6 — 
Affiliate Transactions, pre-tax— — 162.7 — 
Income taxes— — (40.6)— 
Affiliate Transactions, after-tax$— $— $122.1 $— 

Forward-Looking Statements and Other Matters
Certain matters discussed in this press release issued by Affiliated Managers Group, Inc. (“AMG” or the “Company”) may constitute forward-looking statements within the meaning of the federal securities laws. These statements include, but are not limited to, statements related to our expectations regarding the performance of our business, our financial results, our liquidity and capital resources, and other non-historical statements. You can identify these forward-looking statements by the use of words such as “outlook,” “guidance,” “believes,” “expects,” “potential,” “preliminary,” “continues,” “may,” “will,” “should,” “seeks,” “approximately,” “predicts,” “projects,” “positioned,” “prospects,” “intends,” “plans,” “estimates,” “pending investments,” “anticipates,” or the negative version of these words or other comparable words. Actual results and the timing of certain events could differ materially from those projected in or contemplated by the forward-looking statements due to a number of factors, including changes in the securities or financial markets or in general economic conditions, the availability of equity and debt financing, competition for acquisitions of interests in investment management firms, uncertainties relating to closing of pending investments or transactions and potential changes in the anticipated benefits thereof, the investment performance and growth rates of our Affiliates and their ability to effectively market their investment strategies, the mix of Affiliate contributions to our earnings, and other risks, uncertainties, and assumptions, including those described under the section entitled “Risk Factors” in our most recent Annual Report on Form 10-K and Quarterly Reports on Form 10-Q. Such factors may be updated from time to time in our periodic filings with the SEC. These factors should not be construed as exhaustive and should be read in conjunction with the other cautionary statements that are included in this release and in our filings with the SEC. We undertake no obligation to publicly update or review any forward-looking statements, whether as a result of new information, future developments, or otherwise, except as required by applicable law.

This release does not constitute an offer of any products, investment vehicles, or services of any AMG Affiliate.

From time to time, AMG may use its website as a distribution channel of material Company information. AMG routinely posts financial and other important information regarding the Company in the Investor Relations section of its website at www.amg.com and encourages investors to consult that section regularly.
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v3.25.0.1
Cover page
Feb. 06, 2025
Entity Information [Line Items]  
Document Type 8-K
Document Period End Date Feb. 06, 2025
Entity Registrant Name AFFILIATED MANAGERS GROUP, INC.
Entity Incorporation, State or Country Code DE
Entity File Number 001-13459
Entity Tax Identification Number 04-3218510
Entity Address, Address Line One 777 South Flagler Drive
Entity Address, City or Town West Palm Beach
Entity Address, State or Province FL
Entity Address, Postal Zip Code 33401
City Area Code 800
Local Phone Number 345-1100
Written Communications false
Soliciting Material false
Pre-commencement Tender Offer false
Pre-commencement Issuer Tender Offer false
Entity Emerging Growth Company false
Entity Central Index Key 0001004434
Amendment Flag false
Common Stock ($0.01 par value)  
Entity Information [Line Items]  
Title of 12(b) Security Common Stock ($0.01 par value)
Trading Symbol AMG
Security Exchange Name NYSE
5.875% Junior Subordinated Notes due 2059  
Entity Information [Line Items]  
Title of 12(b) Security 5.875% Junior Subordinated Notes due 2059
Trading Symbol MGR
Security Exchange Name NYSE
Four Point Seventy Five Junior Subordinated Notes Due 2060  
Entity Information [Line Items]  
Title of 12(b) Security 4.750% Junior Subordinated Notes due 2060
Trading Symbol MGRB
Security Exchange Name NYSE
Four Point Two Junior Subordinated Notes Due 2061  
Entity Information [Line Items]  
Title of 12(b) Security 4.200% Junior Subordinated Notes due 2061
Trading Symbol MGRD
Security Exchange Name NYSE
Six Point Seventy Five Junior Subordinated Notes Due 2064  
Entity Information [Line Items]  
Title of 12(b) Security 6.750% Junior Subordinated Notes due 2064
Trading Symbol MGRE
Security Exchange Name NYSE
Affiliated Managers (NYSE:MGRE)
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