Acadian Asset Management Inc. - Common stock, par value $0.001 per share (AAMI) Institutional Ownership

13F Institutional Holders and Ownership History from Q2 2019 to Q4 2025

Type / Class
Equity / Common stock, par value $0.001 per share
Symbol
AAMI on NYSE
Shares outstanding
35,839,721
Price per share
$47.00
All holders as of 30 Sep 2025
Q3 2025
Total 13F shares
34,986,745
Total reported value
$1,683,547,428
% of total 13F portfolios
0%
Share change
-824,791
Value change
-$36,449,358
Number of holders
246
Price from insider filings
$47.00
Reported Shares, Excluding Options vs Price
Reported Value, Excluding Options
Total Investors

Significant Owners of Acadian Asset Management Inc. - Common stock, par value $0.001 per share (AAMI) based on Schedule 13D/G filings

Filer Ownership Change % Holdings Value Net Change Nb Shares Change % Reporting Name Report Period
PAULSON & CO. INC. 22% $306,479,102 7,743,282 PAULSON & CO. INC. 03 Sep 2025
BlackRock, Inc. 11% -23% $113,935,282 -$34,617,734 4,230,794 -23% BlackRock, Inc. 31 Mar 2025
PRUDENTIAL FINANCIAL INC 5.9% $80,821,022 2,127,989 PRUDENTIAL FINANCIAL INC 30 Jun 2025
JENNISON ASSOCIATES LLC 4.8% -17% $83,309,191 -$17,397,752 1,729,842 -17% Jennison Associates LLC 30 Sep 2025
Azora Capital LP 4.2% -24% $42,168,771 -$12,454,910 1,565,866 -23% Azora Capital LP 31 Dec 2024
Empyrean Capital Partners, LP 4.3% $74,219,761 1,541,108 Empyrean Capital Partners, LP 30 Sep 2025

As of 30 Sep 2025, 246 institutional investors reported holding 34,986,745 shares of Acadian Asset Management Inc. - Common stock, par value $0.001 per share (AAMI). This represents 98% of the company’s total 35,839,721 outstanding shares.

Top 25 Institutional Shareholders

The largest institutional shareholders of Acadian Asset Management Inc. - Common stock, par value $0.001 per share (AAMI) together control 79% of the company’s outstanding shares — a level of ownership often associated with strong institutional conviction and long‑term capital commitment.

Institution Ownership % Shares Held Share Change % Portfolio % Holdings Value
PAULSON & CO. INC. 22% 7,743,282 -13% 13% $372,916,461
BlackRock, Inc. 13% 4,762,717 -6.5% 0% $229,372,446
VANGUARD GROUP INC 6.6% 2,348,586 -1.4% 0% $113,107,902
JENNISON ASSOCIATES LLC 4.8% 1,729,842 -17% 0.05% $83,309,191
Empyrean Capital Partners, LP 4.3% 1,541,108 -18% 3% $74,219,761
STATE STREET CORP 3.4% 1,200,703 -1.1% 0% $57,825,856
DIMENSIONAL FUND ADVISORS LP 2.7% 953,382 -2.4% 0.01% $45,917,087
Impax Asset Management Group plc 2.1% 765,484 -23% 0.22% $36,865,709
GEODE CAPITAL MANAGEMENT, LLC 1.8% 656,190 +4.6% 0% $31,605,773
Nuveen, LLC 1.8% 640,554 +1.3% 0.01% $30,849,080
ARROWSTREET CAPITAL, LIMITED PARTNERSHIP 1.7% 619,344 +1.4% 0.02% $29,827,607
North Reef Capital Management LP 1.4% 511,452 +6.6% 1.2% $24,631,528
MORGAN STANLEY 1.3% 470,764 +4.9% 0% $22,672,034
SOROS FUND MANAGEMENT LLC 1.3% 457,128 +10% 0.35% $22,015,284
CHARLES SCHWAB INVESTMENT MANAGEMENT INC 1.3% 448,961 +15% 0% $21,621,962
Invesco Ltd. 1.2% 420,414 +72% 0% $20,247,139
JACOBS LEVY EQUITY MANAGEMENT, INC 1.2% 416,498 0.08% $20,058,544
GW&K Investment Management, LLC 1.1% 383,707 0.16% $18,479,000
Systematic Alpha Investments, LLC 1% 370,108 0% 0.59% $17,824,400
FEDERATED HERMES, INC. 0.96% 342,621 +18% 0.03% $16,500,627
TWO SIGMA ADVISERS, LP 0.86% 309,575 -12% 0.03% $14,909,132
TWO SIGMA INVESTMENTS, LP 0.85% 306,296 +25% 0.02% $14,751,215
Allspring Global Investments Holdings, LLC 0.81% 289,038 +37% 0.02% $13,365,117
NORTHERN TRUST CORP 0.8% 287,752 -5.1% 0% $13,858,135
WILLIAM BLAIR INVESTMENT MANAGEMENT, LLC 0.78% 281,318 -60% 0.04% $13,548,275

Institutional Holders of Acadian Asset Management Inc. - Common stock, par value $0.001 per share (AAMI) across Reporting Periods

Period Reported Shares, Excl. Options Value, Excl. Options Value Change Price (Median) Investors
2025 Q4 809,607 $38,191,620 +$20,308,818 $47.00 14
2025 Q3 34,986,745 $1,683,547,428 -$36,449,358 $48.16 246
2025 Q2 35,778,019 $1,261,010,713 +$1,582,222 $35.24 213
2025 Q1 35,912,108 $928,709,663 -$47,957,442 $25.86 190
2024 Q4 37,752,569 $994,151,709 +$13,331,289 $26.34 177
2024 Q3 37,169,720 $943,763,728 -$18,137,073 $25.40 171
2024 Q2 38,054,356 $843,690,912 -$24,328,051 $22.17 164
2024 Q1 39,168,433 $894,553,117 -$39,556,496 $22.84 168
2023 Q4 41,054,968 $786,553,389 -$2,826,463 $19.16 169
2023 Q3 41,152,021 $797,584,945 -$2,468,747 $19.39 161
2023 Q2 41,244,983 $864,213,285 -$10,762,873 $20.95 155
2023 Q1 41,626,716 $981,253,379 -$13,037,587 $23.58 163
2022 Q4 42,392,867 $872,573,361 +$4,358,738 $20.58 142
2022 Q3 42,568,813 $635,085,728 -$9,035,943 $14.91 147
2022 Q2 42,621,167 $767,406,688 -$54,429,253 $18.01 148
2022 Q1 44,183,535 $1,071,418,175 -$68,689,496 $24.25 155
2021 Q4 46,943,314 $1,202,472,473 -$832,842,752 $25.60 177
2021 Q3 79,061,517 $2,067,730,261 +$6,713,987 $26.13 175
2021 Q2 78,940,057 $1,850,838,067 -$15,155,001 $23.43 163
2021 Q1 78,922,644 $1,607,966,780 -$11,281,488 $20.38 167
2020 Q4 79,614,213 $1,534,316,832 -$27,079,923 $19.28 164
2020 Q3 80,774,043 $1,041,521,316 -$14,529,395 $12.90 150
2020 Q2 81,818,677 $1,019,438,778 +$21,132,761 $12.46 138
2020 Q1 81,768,630 $522,464,351 -$18,281,434 $6.39 119
2019 Q4 83,595,313 $854,118,808 -$31,958,648 $10.22 142
2019 Q3 86,557,980 $857,806,888 +$848,751,613 $9.91 128
2019 Q2 909,087 $10,373,700 +$10,373,700 $11.41 8