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AFFILIATED MANAGERS GROUP, INC.

For the period ended Sep 30, 2026. Filed Nov 9, 2026.

View on SEC.gov

About this filing

A company's report for each of its first three quarters. The financial statements are not audited. It shows how the business has moved since the last annual report, and what management says changed.

Sep 30, 2026 · Filed Nov 9, 2026

AMG$383.15+5.6%Stored close · as of Nov 9, 2026

What changed in Management’s Discussion and Analysis?

Read the current filing

Previous report: 10-Q

Period ended 2026-06-30; filed 2026-08-07.

0001628280-26-054930

Item 2. Management’s Discussion and Analysis of Financial Condition and Results of Operations

Current report: 10-Q

Period ended 2026-09-30; filed 2026-11-09.

0001628280-26-072209

Item 2. Management’s Discussion and Analysis of Financial Condition and Results of Operations

The baseline is this issuer’s latest earlier reporting period of the same form that was filed before the current report. A previous 10-Q is a different quarter, not a year-over-year comparison. Amendments are excluded.

Compared 502 previous paragraphs and 515 current paragraphs.

291 unchanged; 138 reworded; 73 added; 64 removed; 9 previous and 13 current paragraphs rearranged.

Tables are not compared: 20 previous and 20 current tables excluded. Dates, whitespace, punctuation and numbering changes are ignored; changes to financial figures remain significant.

A changed paragraph is not evidence that risk increased or decreased. An unchanged paragraph does not establish that risk stayed the same.

Added paragraphs (73)

Current report

(1)Attributable to the divestment of our equity interest in Vesterra Capital Partners, LP, formerly Comvest Private Equity, in

Current report

31% increase from asset-based fees, partially offset by a $9.4 million decrease from performance-based fees, primarily in liquid

Current report

or 33% increase from asset-based fees and a $280.1 million or 8% increase from performance-based fees, primarily in liquid

Current report

management, primarily in liquid alternative and private markets strategies, the impact of our investments in new Affiliates and

Current report

Net income (controlling interest)decreased $39.1 million or 18% for thethree months ended September 30, 2026. This

Current report

decrease was primarily due to $127.6 million of Affiliate transaction gains in the third quarter of 2025, which did not recur,

Current report

partially offset by a $70.7 million increase in Equity method income (net).

Current report

Net income (controlling interest)increased $100.6 million or 27% for thenine months ended September 30, 2026. This

Current report

increase was primarily due to a $202.0 million increase in Equity method income (net), partially offset by a $113.0 million

Current report

Our Adjusted EBITDA (controlling interest)increased $102.8 million or 41% for thethree months ended September 30, 2026,

Current report

primarily due to a$411.6 million or 31% increase in aggregate fees.

Current report

Adjusted EBITDA (controlling interest)increased $288.2 million or 41% for thenine months ended September 30, 2026,

Current report

primarily due to a$1,539.2 million or 41% increase in aggregate fees.

Current report

income (controlling interest)increased $68.2 million or 38%, primarily due to a$102.8 million or 41% increase in Adjusted

Current report

Economic net income (controlling interest)increased $196.4 million or 39% for thenine months ended September 30,

Current report

2026, primarily due to a$288.2 million or 41% increase in Adjusted EBITDA (controlling interest).

Current report

Consolidated revenue increased $67.2 million or 13% for thethree months ended September 30, 2026, due to a $55.6

Current report

million or 11% increase from asset-based fees, and an $11.6 million or 2% increase from performance-based fees, primarily in

Current report

impact of market appreciation, and changes in the composition of our assets under management.

Current report

Consolidated revenue increased $263.0 million or 17% for thenine months ended September 30, 2026, due to a $196.9

Current report

million or 13% increase from asset-based fees and a $66.1 million or 4% increase from performance-based fees, primarily in

Current report

impact of market appreciation, and changes in the composition of our assets under management.

Current report

decrease in Affiliate equity expense and a $1.6 million decrease in share-based compensation.

Current report

decrease in Affiliate equity expense and a $6.3 million decrease in share-based compensation.

Current report

Intangible amortization and impairments increased $1.2 million or 19% for thethree months ended September 30, 2026,

Current report

Intangible amortization and impairments decreased $32.1 million or 33% for thenine months ended September 30, 2026,

Current report

Interest expense increased $7.5 million or 23% for thethree months ended September 30, 2026, primarily due to a $7.3

Current report

Interest expense increased $17.8 million or 17% for thenine months ended September 30, 2026, primarily due to a $20.7

Current report

There were no significant changes to Other expenses (net) for thethree months ended September 30, 2026.

Current report

Other expenses (net)increased $11.9 million or 34% for thenine months ended September 30, 2026, primarily due to a

Current report

Equity method revenue, net increased $344.4 million or 42% for thethree months ended September 30, 2026, due to a

Current report

Equity method intangible amortization increased $3.3 million or 13% for thethree months ended September 30, 2026,

Showing the first 40 of 73 passages. Open the source sections for the rest.

Removed paragraphs (64)

Previous report

(1)Attributable to themyCIO Transaction as of the closing date.

Previous report

primarily in liquid alternative and multi-asset and fixed income strategies, including the impact of our investments in new

Previous report

from asset-based fees and a $289.5 million or 12% increase from performance-based fees, primarily in liquid alternative

Previous report

management, primarily in liquid alternative and multi-asset and fixed income strategies, including the impact of our

Previous report

including net client cash flows from our Affiliates managing alternative strategies, which typically have higher fee rates.

Previous report

Net income (controlling interest)increased $101.6 million for thethree months ended June 30, 2026. This increase was

Previous report

primarily due to the impact of a $147.5 million increase in Consolidated revenue, a $59.3 million increase in Equity method

Previous report

income (net), and a $38.3 million decrease in Affiliate equity expense attributable to the controlling interest, partially offset by

Previous report

a $32.4 million increase in Income tax expense attributable to the controlling interest.

Previous report

Net income (controlling interest)increased $139.7 million or 89% for thesix months ended June 30, 2026. This increase

Previous report

was primarily due to the impact of a $195.8 million increase in Consolidated revenue and a $131.3 million increase in Equity

Previous report

Our Adjusted EBITDA (controlling interest)increased $96.3 million or 44% for thethree months ended June 30, 2026,

Previous report

Adjusted EBITDA (controlling interest)increased $185.4 million or 41% for thesix months ended June 30, 2026,

Previous report

primarily due to a$1,127.5 million or 46% increase in aggregate fees. Adjusted EBITDA (controlling interest) increased less

Previous report

than aggregate fees on a percentage basis primarily due to the recognition of performance-based fees earned by Affiliates in

Previous report

(controlling interest)increased $62.2 million or 39%, primarily due to a$96.3 million or 44% increase in Adjusted EBITDA

Previous report

Economic net income (controlling interest)increased $128.2 million or 40% for thesix months ended June 30, 2026,

Previous report

primarily due to a$185.4 million or 41% increase in Adjusted EBITDA (controlling interest).

Previous report

Consolidated revenue increased $147.5 million or 30% for thethree months ended June 30, 2026, due to an $86.3 million

Previous report

or 18% increase from asset-based fees, and a $61.2 million or 12% increase from performance-based fees, primarily in private

Previous report

Consolidated revenue increased $195.8 million or 20% for thesix months ended June 30, 2026, due to a $141.3 million or

Previous report

14% increase from asset-based fees and a $54.5 million or 6% increase from performance-based fees, primarily in private

Previous report

Intangible amortization and impairments increased $0.9 million or 14% for thethree months ended June 30, 2026,

Previous report

Intangible amortization and impairments decreased $33.1 million or 37% for thesix months ended June 30, 2026, primarily

Previous report

Interest expense increased $6.0 million or 17% for thethree months ended June 30, 2026, primarily due to a $7.7 million

Previous report

Interest expense increased $10.3 million or 15% for thesix months ended June 30, 2026, primarily due to a $13.7 million

Previous report

Other expenses (net)increased $3.3 million or 33% for thethree months ended June 30, 2026, primarily due to a $1.1

Previous report

Other expenses (net)increased $13.0 million or 60% for thesix months ended June 30, 2026, primarily due to a $9.3

Previous report

Equity method revenue, net increased $340.5 million or 50% for thethree months ended June 30, 2026, due to a $351.2

Previous report

method Affiliates’ average assets under management, primarily in liquid alternative and multi-asset and fixed income strategies,

Previous report

including the impact of our investments in new Affiliates and market appreciation, and changes in the composition of our assets

Previous report

Equity method intangible amortization increased $2.2 million or 8% for thethree months ended June 30, 2026, primarily

Previous report

Equity method revenue, netincreased $931.7 million or 64% for thesix months ended June 30, 2026, due to a $696.7

Showing the first 40 of 64 passages. Open the source sections for the rest.

Reworded paragraphs (138)

Previous wording

June 30, 2026, our aggregate assets under management were approximately $942 billion across a diverse range of private

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September 30, 2026, our aggregate assets under management were approximately $974 billion across a diverse range of

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markets, liquid alternative, and differentiated long-only investment strategies.

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private markets, liquid alternative, and differentiated long-only investment strategies.

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performance generated by their investment products. For thethree months ended June 30, 2026, assets under management

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performance generated by their investment products. For thethree months ended September 30, 2026, assets under

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increased$60.4 billion or 7%, and for thesix months ended June 30, 2026, assets under management increased$129.1 billion

Current wording

management increased$31.5 billion or 3%, and for thenine months ended September 30, 2026, assets under management

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or 16%. These increases were driven by net client cash flows and market appreciation, and for the six months ended June 30,

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increased$160.6 billion or 20%. These increases were driven by net client cash flows and investment performance, and for the

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2026, the increase was also due to the addition of assets associated with new Affiliate investments. We continue to see client

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nine months ended September 30, 2026, the increase was also due to the addition of assets associated with new Affiliate

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demand for alternative strategies; broad-based demand for our Affiliates’ liquid alternative and private markets strategies

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investments. We continue to see client demand for alternative strategies; broad-based demand for our Affiliates’ liquid

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generated strong net inflows in the quarter, while our Affiliates’ equity strategies experienced net outflows in line with trends

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alternative and private markets strategies generated strong net inflows in the quarter, while our Affiliates’ equity strategies

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across the industry. As we continue to execute our growth strategy by investing in new and existing Affiliates, as well as in

Current wording

experienced net outflows in line with trends across the industry. As we continue to execute our growth strategy by investing in

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AMG’s strategic capabilities, we expect our business mix to further evolve and diversify, expanding our exposure to in-demand

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new and existing Affiliates, as well as in AMG’s strategic capabilities, we expect our business mix to further evolve and

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strategies in both private markets and liquid alternatives, and better positioning AMG to continue to benefit from industry

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diversify, expanding our exposure to in-demand strategies in both private markets and liquid alternatives, and better positioning

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The following tables present changes in our assets under management by strategy for thethree andsix months ended

Current wording

The following tables present changes in our assets under management by strategy for thethree andnine months ended

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(3)Other includes product transitions and reclassifications.

Current wording

(3)Other includes product transitions predominantly resulting from changes in product mandates at a single Affiliate.

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(1)Past performance is not indicative of future results. Performance and AUM information is as of June 30, 2026 and is based

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(1)Past performance is not indicative of future results. Performance and AUM information is as of September 30, 2026 and is

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on data available at the time of calculation. Product returns are sourced from Affiliates while benchmark returns are

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based on data available at the time of calculation. Product returns are sourced from Affiliates while benchmark returns are

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period because they inherently depend on investment performance. As of June 30, 2026, approximately 27% of our total assets

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period because they inherently depend on investment performance. As of September 30, 2026, approximately 27% of our total

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under management could potentially earn performance-based fees. These percentages were approximately 12% and 39% of our

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assets under management could potentially earn performance-based fees. These percentages were approximately 13% and 38%

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assets under management for our consolidated Affiliates and Affiliates accounted for under the equity method, respectively.

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of our assets under management for our consolidated Affiliates and Affiliates accounted for under the equity method,

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We anticipate performance-based fees will be a recurring component of our aggregate fees; however we do not anticipate these

Current wording

respectively. We anticipate performance-based fees will be a recurring component of our aggregate fees; however, we do not

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fees to be a significant component of our Consolidated revenue as these fees are predominately earned by our Affiliates

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anticipate these fees to be a significant component of our Consolidated revenue as these fees are predominantly earned by our

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Aggregate fees were$1,661.5 million for thethree months ended June 30, 2026, anincrease of$488.0 million or 42% as

Current wording

Aggregate fees were$1,757.6 million for thethree months ended September 30, 2026, anincrease of$411.6 million or

Previous wording

compared to thethree months ended June 30, 2025. The increase in aggregate fees was due to a $437.5 million or 37% increase

Current wording

31% as compared to thethree months ended September 30, 2025. The increase in aggregate fees was due to a $421.0 million or

Previous wording

strategies. The increase in asset-based fees was principally due to an increase in our Affiliates’ average assets under

Current wording

alternative strategies. The increase in asset-based fees was principally due to an increase in our Affiliates’ average assets under

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markets strategies. The increase in asset-based fees was principally due to an increase in our consolidated Affiliates’ average

Current wording

management, primarily in liquid alternative and private markets strategies, the impact of our investments in new Affiliates and

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flows from our Affiliates managing alternative strategies, which typically have higher fee rates.

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Affiliates managing alternative strategies, which typically have higher fee rates.

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Aggregate fees were$3,571.4 million for thesix months ended June 30, 2026, anincrease of$1,127.5 million or 46% as

Current wording

Aggregate fees were$5,329.0 million for thenine months ended September 30, 2026, anincrease of$1,539.2 million or

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compared to thesix months ended June 30, 2025. The increase in aggregate fees was due to an $838.0 million or 34% increase

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41% as compared to thenine months ended September 30, 2025. The increase in aggregate fees was due to a $1,259.1 million

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The increase in asset-based fees was principally due to an increase in our Affiliates’ average assets under management,

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alternative strategies. The increase in asset-based fees was principally due to an increase in our Affiliates’ average assets under

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(2)Adjusted EBITDA (controlling interest) and Economic net income (controlling interest) are non-GAAP performance

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(1)Adjusted EBITDA (controlling interest) and Economic net income (controlling interest) are non-GAAP performance

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improves comparability of performance between periods. For thethree months ended June 30, 2026, our Economic net income

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improves comparability of performance between periods. For thethree months ended September 30, 2026, our Economic net

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assets under management, primarily in private markets and multi-asset and fixed income strategies, including the impact of

Current wording

average assets under management, primarily in private markets and multi-asset and fixed income strategies, including the

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Compensation and related expenses increased $52.4 million or 20% for thethree months ended June 30, 2026, primarily

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Compensation and related expenses increased $16.2 million or 6% for thethree months ended September 30, 2026,

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due to a$90.7 million increase in compensation accruals, partially offset by a $37.6 million decrease in Affiliate equity

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primarily due to a$21.2 million increase in compensation accruals. This increase was partially offset by a $3.4 million

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Compensation and related expenses increased $109.1 million or 22% for thesix months ended June 30, 2026, primarily due

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Compensation and related expenses increased $125.3 million or 17% for thenine months ended September 30, 2026,

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to a $117.6 million increase in compensation accruals, partially offset by a $4.6 million decrease in share-based compensation

Current wording

primarily due to a $138.9 million increase in compensation accruals. This increase was partially offset by a $7.3 million

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Selling, general and administrative expenses increased $11.7 million or 12% for thethree months ended June 30, 2026,

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Selling, general and administrative expenses increased $20.2 million or 20% for thethree months ended September 30,

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primarily due to a $17.4 million increase in distribution and investment-related expenses, principally as a result of the increase

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2026, primarily due to an $11.4 million increase in distribution and investment-related expenses, principally as a result of the

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in average assets under management on which these expenses are incurred, and a $6.2 million increase in professional fees.

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increase in average assets under management on which these expenses are incurred, and a $7.0 million increase in professional

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Selling, general and administrative expenses increased $24.3 million or 13% for thesix months ended June 30, 2026,

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Selling, general and administrative expenses increased $44.7 million or 15% for thenine months ended September 30,

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primarily due to a $10.3 million increase in distribution and investment-related expenses, principally as a result of the increase

Current wording

2026, primarily due to a $28.8 million increase in distribution and investment-related expenses, principally as a result of the

Showing the first 40 of 138 pairs. Open the source sections for the rest.

Rearranged current paragraphs (13)

Current report — wording carried from elsewhere

AMG to continue to benefit from industry growth trends.

Current report — wording carried from elsewhere

Affiliates accounted for under the equity method.

Current report — wording carried from elsewhere

market appreciation, and changes in the composition of our assets under management, including net client cash flows from our

Current report — wording carried from elsewhere

market appreciation, and changes in the composition of our assets under management, including net client cash flows from our

Current report — wording carried from elsewhere

Affiliates managing alternative strategies, which typically have higher fee rates.

Current report — wording carried from elsewhere

private markets strategies. The increase in asset-based fees was principally due to an increase in our consolidated Affiliates’

Current report — wording carried from elsewhere

private markets strategies. The increase in asset-based fees was principally due to an increase in our consolidated Affiliates’

Current report — wording carried from elsewhere

average assets under management, primarily in private markets and multi-asset and fixed income strategies, including the

Current report — wording carried from elsewhere

amortization expense due to an increase in actual and expected client attrition for certain definite-lived acquired client

Current report — wording carried from elsewhere

an increase in our equity method Affiliates’ average assets under management, primarily in liquid alternative strategies, the

Current report — wording carried from elsewhere

ended September 30, 2026 includes a gain of$14.6 million related to the myCIO Transaction. Peppertree and myCIO

Current report — wording carried from elsewhere

and 12 of our Consolidated Financial Statements.

Current report — wording carried from elsewhere

occurred under the equity distribution program.
Rearranged previous paragraphs (9)

Previous report — wording carried elsewhere

accounted for under the equity method.

Previous report — wording carried elsewhere

Affiliates and market appreciation, and changes in the composition of our assets under management, including net client cash

Previous report — wording carried elsewhere

primarily due to a$488.0 million or 42% increase in aggregate fees.

Previous report — wording carried elsewhere

market appreciation, and changes in the composition of our assets under management.

Previous report — wording carried elsewhere

markets strategies. The increase in asset-based fees was principally due to an increase in our consolidated Affiliates’ average

Previous report — wording carried elsewhere

assets under management, primarily in private markets and multi-asset and fixed income strategies, including the impact of

Previous report — wording carried elsewhere

market appreciation, and changes in the composition of our assets under management.

Previous report — wording carried elsewhere

liquid alternative strategies. The increase in asset-based fees was principally due to an increase in our equity method Affiliates’

Previous report — wording carried elsewhere

partially offset by higher tax windfalls attributable to share-based compensation for the three months ended June 30, 2025.