Affiliated Managers Group Ownership

Who are the major shareholders and have insiders been buying or selling?

Recent Insider Transactions

NYSE:AMG Recent Insider Transactions by Companies or Individuals
Date	Value	Name	Entity	Shares	Max Price
08 May 26	SellUS$300,180	Felix Matos Rodriguez	Individual	1,000	US$300.18
06 May 26	BuyUS$458,745	George Cates	Individual	1,500	US$305.83
06 May 26	SellUS$1,037,814	David Ryan	Individual	3,402	US$305.06
09 Mar 26	SellUS$612,128	Kavita Padiyar	Individual	2,200	US$278.24
06 Mar 26	SellUS$2,290,400	Thomas Wojcik	Individual	8,000	US$286.30

Insider Trading Volume

Insider Buying: AMG insiders have sold more shares than they have bought in the past 3 months.

Ownership Breakdown

What is the ownership structure of AMG?
Owner Type	Number of Shares	Ownership Percentage
General Public	17,469	0.0661%
State or Government	115,138	0.436%
Individual Insiders	904,941	3.43%
Institutions	25,374,537	96.1%

Dilution of Shares: Shareholders have not been meaningfully diluted in the past year.

Top Shareholders

Top 25 shareholders own 67.12% of the company

Ownership	Name	Shares	Current Value	Change %	Portfolio %
10.9%	BlackRock, Inc.	2,867,627	US$865.9m	2.45%	0.01%
10.4%	The Vanguard Group, Inc.	2,755,641	US$832.1m	2.69%	0.01%
6.1%	Eaton Vance Management	1,612,186	US$486.8m	-1.54%	0.08%
4.03%	Ariel Investments, LLC	1,064,030	US$321.3m	-10%	3.21%
3.86%	Boston Partners Global Investors, Inc.	1,020,538	US$308.2m	-10.2%	0.18%
3.51%	State Street Global Advisors, Inc.	926,733	US$279.8m	-0.29%	0.01%
2.88%	Fuller & Thaler Asset Management, Inc.	760,213	US$229.6m	10.9%	0.7%
2.72%	Dimensional Fund Advisors LP	718,313	US$216.9m	2.7%	0.03%
2.41%	Geode Capital Management, LLC	635,778	US$192.0m	15.4%	0.01%
2.16%	Jay Horgen	570,935	US$172.4m	0%	no data
1.9%	Lyrical Asset Management LP	502,121	US$151.6m	-8.97%	1.95%
1.81%	LSV Asset Management	476,811	US$144.0m	0.8%	0.25%
1.49%	Norges Bank Investment Management	394,559	US$119.1m	0%	0.01%
1.32%	Northern Trust Global Investments	348,882	US$105.3m	7.12%	0.01%
1.27%	Pacific Investment Management Company LLC	335,749	US$101.4m	9.77%	0.24%
1.19%	Clarkston Capital Partners, LLC	313,708	US$94.7m	-65.3%	7.26%
1.17%	Charles Schwab Investment Management, Inc.	308,031	US$93.0m	0.8%	0.01%
1.15%	Channing Capital Management, LLC	302,672	US$91.4m	4.11%	2.2%
1.12%	BNY Asset Management	294,856	US$89.0m	21.5%	0.01%
1.07%	Invesco Capital Management LLC	283,893	US$85.7m	334%	0.02%
0.96%	Fisher Asset Management, LLC	253,263	US$76.5m	3.87%	0.02%
0.96%	Jane Street Group, LLC	252,505	US$76.2m	530%	0.07%
0.95%	Bruni J V & Co	249,765	US$75.4m	-0.94%	7.48%
0.94%	Citadel Advisors LLC	247,220	US$74.7m	-22.6%	0.05%
0.88%	UBS Asset Management AG	232,594	US$70.2m	-41.3%	no data

Company Analysis and Financial Data Status

Data	Last Updated (UTC time)
Company Analysis	2026/05/24 22:01
End of Day Share Price	2026/05/22 00:00
Earnings	2026/03/31
Annual Earnings	2025/12/31

Data Sources

The data used in our company analysis is from S&P Global Market Intelligence LLC. The following data is used in our analysis model to generate this report. Data is normalised which can introduce a delay from the source being available.

Package	Data	Timeframe	Example US Source ^*
Company Financials	10 years	Income statement Cash flow statement Balance sheet	SEC Form 10-K SEC Form 10-Q
Analyst Consensus Estimates	+3 years	Forecast financials Analyst price targets	Analyst Research Reports Blue Matrix
Market Prices	30 years	Stock prices Dividends, Splits and Actions	ICE Market Data SEC Form S-1
Ownership	10 years	Top shareholders Insider trading	SEC Form 4 SEC Form 13D
Management	10 years	Leadership team Board of directors	SEC Form 10-K SEC Form DEF 14A
Key Developments	10 years	Company announcements	SEC Form 8-K

^* Example for US securities, for non-US equivalent regulatory forms and sources are used.

Unless specified all financial data is based on a yearly period but updated quarterly. This is known as Trailing Twelve Month (TTM) or Last Twelve Month (LTM) Data. Learn more.

Analysis Model and Snowflake

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Learn about the world class team who designed and built the Simply Wall St analysis model.

Industry and Sector Metrics

Our industry and section metrics are calculated every 6 hours by Simply Wall St, details of our process are available on Github.

Analyst Sources

Affiliated Managers Group, Inc. is covered by 13 analysts. 5 of those analysts submitted the estimates of revenue or earnings used as inputs to our report. Analysts submissions are updated throughout the day.

Analyst	Institution
Alexander Paris	Barrington Research Associates, Inc.
Craig Siegenthaler	BofA Global Research
William Katz	Citigroup Inc