Affiliated Managers Group, Inc. (AMG) Institutional Ownership

Institutions by Trading Activity

33,000,000Shares Outstanding

26,749,508Shares held by institutions

$7,987,670,584Value of institutional holdings

81.06%Institutional ownership %

0.68%Shares Changed QoQ

502No. of institutional investors

Affiliated Managers Group, Inc. (NYSE:AMG) is held by 501 institutional investors per 13F filings through December 2025.

They owned 80.5% of outstanding stock in December 2025, down from 82.0% the prior quarter.
Their total shares held in AMG increased 0.49% from the prior quarter, while the number of investors in Affiliated Managers increased 24.63% year over year.
Of these 501 holders, 239 added to their stakes in Affiliated Managers, 170 trimmed positions, and 92 made no changes.
Institutional investors collectively held 26.57Mn shares in Affiliated Managers as of December 2025, up by 128.31K shares quarter on quarter, and down 4.8Mn shares year over year.
As of December 31, 2025, Ares Financial Consulting, LLC held the largest stake in Affiliated Managers with 8 shares, accounting for 0.0% of total shares outstanding.
Affiliated Managers's 1 largest shareholders as of December 2025 include Ares Financial Consulting, LLC (8) per Business Quant data.

26,749,508 Total Shares Held

Rows:

Owner Name	Date	Shares Held	Change (QoQ)	Change (%)	Value (USD)
BlackRock, Inc.	31 Dec, 2025	2,799,166	-22,689	-0.80%	$806,943,561.00
VANGUARD GROUP INC	31 Dec, 2025	2,683,585	-88,693	-3.20%	$773,623,884.00
Morgan Stanley	31 Dec, 2025	1,705,721	-235,797	-12.14%	$491,726,009.00
FULLER & THALER ASSET MANAGEMENT, INC.	31 Dec, 2025	1,371,176	800,901	140.44%	$395,282,412.00
ARIEL INVESTMENTS, LLC	31 Dec, 2025	1,182,223	-81,601	-6.46%	$340,811,246.00
Boston Partners	31 Dec, 2025	1,136,710	-20,634	-1.78%	$327,757,300.00
State Street Corp	31 Dec, 2025	929,397	-34,311	-3.56%	$267,926,567.00
Clarkston Capital Partners, LLC	31 Dec, 2025	904,119	-328,214	-26.63%	$260,639,425.00
MILLENNIUM MANAGEMENT LLC	31 Dec, 2025	796,010	-221,103	-21.74%	$229,473,763.00
DIMENSIONAL FUND ADVISORS LP	31 Dec, 2025	699,448	15,332	2.24%	$201,640,140.00
LYRICAL ASSET MANAGEMENT LP	31 Dec, 2025	551,587	-28,248	-4.87%	$159,011,500.00
GEODE CAPITAL MANAGEMENT, LLC	31 Dec, 2025	551,153	41,322	8.11%	$158,916,400.00
LSV ASSET MANAGEMENT	31 Dec, 2025	473,021	-6,603	-1.38%	$136,362.00
Allianz Asset Management GmbH	31 Dec, 2025	426,649	33,488	8.52%	$122,994,374.00
NORGES BANK	31 Dec, 2025	394,559	394,559	0.00%	$113,743,469.00
Northern Trust Corp	31 Dec, 2025	325,696	-8,672	-2.59%	$93,891,642.00
Goldman Sachs Group Inc	31 Dec, 2025	323,302	197,223	156.43%	$93,201,516.00
CITADEL ADVISORS LLC	31 Dec, 2025	319,437	-325,704	-50.49%	$92,087,298.00
CHARLES SCHWAB INVESTMENT MANAGEMENT INC	31 Dec, 2025	305,596	-6,972	-2.23%	$88,097,215.00
UBS Group AG	31 Dec, 2025	295,418	-54,794	-15.65%	$85,163,102.00

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