Acadian Asset Management Inc. (AAMI) Institutional Ownership

Institutions by Trading Activity

Ownership Statistics

35,952,381Shares Outstanding

8,276,038Shares held by institutions

$429,857,414Value of institutional holdings

97.05%Institutional ownership %

3.74%Shares Changed QoQ

240No. of institutional investors

Shares Owned by Institutions

Shares Purchased/Sold by Institutions

Ownership Summary

The institutional landscape for Acadian Asset Management Inc. (NYSE:AAMI) includes 240 filers as of the latest reporting cycle ending December 2025.

The percentage of Acadian Asset Management owned by institutions changed from 97.4% in September 2025 to 97.0% in December 2025, marking a slight down trend.
The company experienced a 3.74% quarterly change in institutional shares held, alongside an increase of 34.83% in total owners annually.
During the quarter, 119 institutions bought more Acadian Asset Management shares, 92 sold shares, and 29 of the 240 total investors held their position steady.
The total number of shares held by institutions in Acadian Asset Management increased to 34.89Mn as of December 2025, a net change of up by 1.26Mn shares quarter on quarter, and down 2.77Mn shares year over year.
With 7.74Mn shares, PAULSON & CO. INC. commands the largest institutional position in Acadian Asset Management as of December 31, 2025, equating to 21.54% of the company.
Among the most significant buyers of Acadian Asset Management during December 2025 were Woodline Partners LP (488.11K), SG Americas Securities, LLC (335.87K), SOROS FUND MANAGEMENT LLC (280.24K), FEDERATED HERMES, INC. (215.65K), JENNISON ASSOCIATES LLC (179.38K).
Leading sellers of Acadian Asset Management stock in December 2025 included Empyrean Capital Partners, LP (136.55K), DEUTSCHE BANK AG\ (130.72K), TUDOR INVESTMENT CORP ET AL (124.42K), MILLENNIUM MANAGEMENT LLC (113.35K), EJF Capital LP (110.90K).
The top 10 institutional holders of Acadian Asset Management for the quarter ending December 2025 included PAULSON & CO. INC. (7.74Mn), BlackRock, Inc. (4.66Mn), VANGUARD GROUP INC (2.34Mn), JENNISON ASSOCIATES LLC (1.91Mn), Empyrean Capital Partners, LP (1.40Mn), STATE STREET CORP (1.21Mn), DIMENSIONAL FUND ADVISORS LP (909.21K), Impax Asset Management Group plc (845.45K), SOROS FUND MANAGEMENT LLC (737.37K), GEODE CAPITAL MANAGEMENT, LLC (685.27K).

240 Institutional Holders

8,276,038 Total Shares Held

Rows:

Download Data

Owner Name	Date	Shares Held	Change (QoQ)	Change (%)	Value (USD)
PAULSON & CO. INC.	31 Dec, 2025	7,743,282	0	0.00%	$363,934,254.00
BlackRock, Inc.	31 Dec, 2025	4,655,353	-107,364	-2.25%	$218,801,606.00
VANGUARD GROUP INC	31 Dec, 2025	2,335,363	-13,223	-0.56%	$109,762,061.00
JENNISON ASSOCIATES LLC	31 Dec, 2025	1,909,222	179,380	10.37%	$89,733,434.00
Empyrean Capital Partners, LP	31 Dec, 2025	1,404,562	-136,546	-8.86%	$66,014,414.00
STATE STREET CORP	31 Dec, 2025	1,206,244	5,541	0.46%	$56,693,468.00
DIMENSIONAL FUND ADVISORS LP	31 Dec, 2025	909,213	-44,169	-4.63%	$42,734,382.00
Impax Asset Management Group plc	31 Dec, 2025	845,451	79,967	10.45%	$39,736,197.00
SOROS FUND MANAGEMENT LLC	31 Dec, 2025	737,367	280,239	61.30%	$34,656,249.00
GEODE CAPITAL MANAGEMENT, LLC	31 Dec, 2025	685,272	29,082	4.43%	$32,212,205.00
Nuveen, LLC	31 Dec, 2025	652,144	11,590	1.81%	$30,650,768.00
Woodline Partners LP	31 Dec, 2025	559,091	488,109	687.65%	$26,277,277.00
FEDERATED HERMES, INC.	31 Dec, 2025	558,267	215,646	62.94%	$26,238,549.00
MORGAN STANLEY	31 Dec, 2025	532,515	61,751	13.12%	$25,028,299.00
ARROWSTREET CAPITAL, LIMITED PARTNERSHIP	31 Dec, 2025	514,463	-104,881	-16.93%	$24,179,761.00
CHARLES SCHWAB INVESTMENT MANAGEMENT INC	31 Dec, 2025	480,306	31,345	6.98%	$22,574,382.00
North Reef Capital Management LP	31 Dec, 2025	443,922	-67,530	-13.20%	$20,864,334.00
JACOBS LEVY EQUITY MANAGEMENT, INC	31 Dec, 2025	419,346	2,848	0.68%	$19,709,262.00
GW&K Investment Management, LLC	31 Dec, 2025	413,093	29,386	7.66%	$19,415.00
Systematic Alpha Investments, LLC	31 Dec, 2025	370,108	0	0.00%	$17,395,080.00

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