Acadian Asset ManagementAAMI
13F holders, Q4 2025 (December 31)256holders +6
27new positions
25sold out
9famous investors
$47.01avg. 13F price*
At the end of Q4 2025, 256 institutions reported holding Acadian Asset Management Inc. (AAMI) in their 13F filings, up 6 from Q3 2025. 27 opened new positions and 25 sold out. The largest holders were Paulson & Co. ($363.9M), BlackRock, Inc. ($218.8M) and Vanguard Group Inc. ($109.8M). 9 famous investors held it, including John Paulson (11.2% of Paulson & Co.'s portfolio), George Soros (0.6% of Soros Fund Management's portfolio) and Paul Tudor Jones (0.0% of Tudor Investment Corporation's portfolio).
- Company
- Acadian Asset Management Inc.
- CUSIP
- 10948W103
- Latest filing quarter
- Q2 2026
History
Number of 13F holders
Total Exit/New Position Q3 2025 → Q4 2025
| Institutions | Total Value | |
|---|---|---|
| New Positions | 27 | $10.5M |
| Exits | 25 | $34.1M |
All 13F filers, Q3 2025 → Q4 2025: 2,808,175 shares bought and 2,436,864 shares sold, net +371,311 shares. Counts holders who added, trimmed, opened or closed a position; split-adjusted.
Ownership 256 holders
| Paulson & Co. | 11.16% | No change | 7,743,282 | $363.9M |
| BlackRock, Inc. | 0.00% | Reduce -2.3% | 4,655,353 | $218.8M |
| Vanguard Group Inc. | 0.00% | Reduce -0.6% | 2,335,363 | $109.8M |
| Jennison Associates LLC | 0.05% | Add +10.4% | 1,909,222 | $89.7M |
| Empyrean Capital Partners, LP | 2.46% | Reduce -8.9% | 1,404,562 | $66.0M |
| State Street Corp. | 0.00% | Add +0.5% | 1,206,244 | $56.7M |
| Dimensional Fund Advisors LP | 0.01% | Reduce -4.6% | 909,213 | $42.7M |
| Impax Asset Management Group plc | 0.25% | Add +10.4% | 845,451 | $39.7M |
| Soros Fund Management | 0.62% | Add +61.3% | 737,367 | $34.7M |
| Geode Capital Management, LLC | 0.00% | Add +4.4% | 685,272 | $32.2M |
| Nuveen, LLC | 0.01% | Add +1.8% | 652,144 | $30.7M |
| Woodline Partners LP | 0.10% | Add +687.6% | 559,091 | $26.3M |
| Federated Hermes, Inc. | 0.04% | Add +62.9% | 558,267 | $26.2M |
| Morgan Stanley | 0.00% | Add +13.1% | 532,515 | $25.0M |
| Arrowstreet Capital, Limited Partnership | 0.01% | Reduce -16.9% | 514,463 | $24.2M |
| Charles Schwab Investment Management Inc. | 0.00% | Add +7.0% | 480,306 | $22.6M |
| North Reef Capital Management LP | 0.84% | Reduce -13.2% | 443,922 | $20.9M |
| Invesco Ltd. | 0.00% | Add +0.1% | 420,606 | $19.8M |
| Jacobs Levy Equity Management, Inc. | 0.08% | Add +0.7% | 419,346 | $19.7M |
| GW&K Investment Management, LLC | 0.17% | Add +7.7% | 413,093 | $19.4M |
| Allspring Global Investments Holdings, LLC | 0.03% | Add +27.4% | 368,164 | $17.4M |
| Systematic Alpha Investments, LLC | 0.54% | No change | 370,108 | $17.4M |
| SG Americas Securities, LLC | 0.02% | Add +1414.9% | 359,613 | $16.9M |
| Two Sigma Investments, LP | 0.02% | Reduce -7.5% | 283,488 | $13.3M |
| Northern Trust Corp. | 0.00% | Reduce -3.0% | 278,985 | $13.1M |
| Two Sigma Advisers, LP | 0.03% | Reduce -11.3% | 274,475 | $12.9M |
| William Blair Investment Management, LLC | 0.03% | Reduce -9.3% | 255,086 | $12.0M |
| Goldman Sachs Group Inc. | 0.00% | Reduce -4.3% | 209,096 | $9.8M |
| Bank of New York Mellon Corp | 0.00% | Reduce -3.1% | 202,368 | $9.5M |
| Principal Financial Group Inc. | 0.00% | Add +17.1% | 179,642 | $8.4M |
| FMR LLC | 0.00% | Add +21.6% | 178,880 | $8.4M |
| Qube Research & Technologies Ltd | 0.01% | Add +4.0% | 171,727 | $8.1M |
| First Trust Advisors LP | 0.01% | Add +3422.3% | 169,315 | $8.0M |
| JPMorgan Chase & Co. | 0.00% | Add +52.8% | 150,602 | $7.1M |
| Man Group plc | 0.01% | Add +8.9% | 138,470 | $6.5M |
| Public Sector Pension Investment Board | 0.02% | Add +19.0% | 123,049 | $5.8M |
| Norges Bank | 0.00% | — | 120,700 | $5.7M |
| D. E. Shaw & Co. | 0.00% | Add +30.6% | 115,086 | $5.4M |
| Algert Global LLC | 0.08% | Add +29.0% | 114,987 | $5.4M |
| Jupiter Asset Management Ltd. | 0.04% | Add +4.3% | 109,796 | $5.2M |
| Brightlight Capital Management LP | 3.61% | Reduce -28.1% | 107,900 | $5.1M |
| Allianz Asset Management GmbH | 0.01% | Add +61.1% | 106,998 | $5.0M |
| Citadel Advisors | 0.00% | Add +60.2% | 102,471 | $4.8M |
| Tudor Investment Corporation | 0.03% | Reduce -55.1% | 101,163 | $4.8M |
| Bank of America Corp. | 0.00% | Add +21.1% | 100,306 | $4.7M |
| Renaissance Technologies | 0.01% | Add +48.8% | 98,328 | $4.6M |
| UBS Group AG | 0.00% | Reduce -46.0% | 95,075 | $4.5M |
| AQR Capital Management | 0.00% | Add +20.7% | 92,439 | $4.3M |
| Millennium Management | 0.00% | Reduce -56.0% | 88,936 | $4.2M |
| LSV Asset Management | 0.01% | Reduce -2.5% | 82,300 | $3.9M |
| Ameriprise Financial Inc. | 0.00% | Reduce -5.0% | 79,402 | $3.7M |
| American Century Companies Inc. | 0.00% | Add +5.6% | 77,292 | $3.6M |
| Rhumbline Advisers | 0.00% | Reduce -6.4% | 74,893 | $3.5M |
| Legal & General Group Plc | 0.00% | Reduce -0.4% | 70,835 | $3.3M |
| Victory Capital Management Inc. | 0.00% | Reduce -42.4% | 69,481 | $3.3M |
| UBS AM, a distinct business unit of UBS ASSET MANAGEMENT AMERICAS LLC | 0.00% | Add +1.4% | 66,621 | $3.1M |
| Kestrel Investment Management Corp. | 1.68% | Reduce -3.4% | 63,181 | $3.0M |
| Teacher Retirement System of Texas | 0.01% | Add +2.3% | 62,439 | $2.9M |
| Nearwater Capital Markets, Ltd | 0.05% | No change | 60,000 | $2.8M |
| Cannell & Spears LLC | 0.05% | New | 59,197 | $2.8M |
| Credit Agricole S A | 0.01% | Add +91.6% | 58,389 | $2.7M |
| Healthcare of Ontario Pension Plan Trust Fund | 0.00% | New | 57,770 | $2.7M |
| Envestnet Asset Management Inc. | 0.00% | Add +34.4% | 56,676 | $2.7M |
| Swiss National Bank | 0.00% | Add +8.4% | 56,526 | $2.7M |
| Barclays PLC | 0.00% | Reduce -3.5% | 55,444 | $2.6M |
| Boston Partners | 0.00% | Reduce -1.9% | 55,124 | $2.6M |
| ExodusPoint Capital Management, LP | 0.03% | Add +59.2% | 51,201 | $2.4M |
| Engineers Gate Manager LP | 0.03% | Reduce -10.7% | 50,060 | $2.4M |
| Franklin Resources Inc. | 0.00% | Add +1.5% | 42,986 | $2.0M |
| Citigroup Inc. | 0.00% | Reduce -16.0% | 42,850 | $2.0M |
| Voleon Capital Management LP | 0.04% | Add +290.1% | 42,370 | $2.0M |
| BNP Paribas Financial Markets | 0.00% | Add +14.0% | 42,187 | $2.0M |
| State of Wisconsin Investment Board | 0.00% | Add +8.3% | 41,130 | $1.9M |
| Royce & Associates LP | 0.02% | Reduce -17.5% | 39,301 | $1.8M |
| Zacks Investment Management | 0.01% | Reduce -8.2% | 38,749 | $1.8M |
| Alliancebernstein L.P. | 0.00% | Add +7.5% | 38,087 | $1.8M |
| Dark Forest Capital Management LP | 0.08% | Reduce -54.8% | 37,792 | $1.8M |
| Susquehanna Portfolio Strategies, LLC | 0.03% | No change | 35,357 | $1.7M |
| Prudential Financial Inc. | 0.00% | Reduce -43.2% | 32,756 | $1.5M |
| HRT Financial LP | 0.00% | Add +22.1% | 32,395 | $1.5M |
| Kendall Capital Management | 0.32% | Add +112.9% | 32,260 | $1.5M |
| Russell Investments Group, Ltd. | 0.00% | Reduce -4.2% | 32,131 | $1.5M |
| Linden Thomas Advisory Services, LLC | 0.14% | Add +3.5% | 30,077 | $1.4M |
| Brant Point Investment Management LLC | 0.34% | Reduce -50.0% | 30,000 | $1.4M |
| Wells Fargo & Company | 0.00% | Add +78.2% | 29,445 | $1.4M |
| DGS Capital Management, LLC | 0.24% | Add +8.7% | 29,386 | $1.4M |
| Universal- Beteiligungs- und Servicegesellschaft mbH | 0.00% | Reduce -14.5% | 27,967 | $1.3M |
| California State Teachers Retirement System | 0.00% | Add +9.3% | 27,270 | $1.3M |
| Guggenheim Capital LLC | 0.01% | Add +424.4% | 25,499 | $1.2M |
| LPL Financial LLC | 0.00% | Reduce -3.1% | 25,079 | $1.2M |
| Creative Planning | 0.00% | Reduce -4.3% | 24,839 | $1.2M |
| CANADA LIFE ASSURANCE Co | 0.00% | Add +4.1% | 24,069 | $1.1M |
| Panagora Asset Management Inc. | 0.00% | Add +56.8% | 23,429 | $1.1M |
| Deutsche Bank AG | 0.00% | Reduce -85.0% | 23,011 | $1.1M |
| State Board of Administration of Florida Retirement System | 0.00% | No change | 22,812 | $1.1M |
| Martingale Asset Management L P | 0.03% | Reduce -29.0% | 22,524 | $1.1M |
| Concurrent Investment Advisors, LLC | 0.01% | Add +129.0% | 22,258 | $1.0M |
| Voloridge Investment Management, LLC | 0.00% | Reduce -73.0% | 21,522 | $1.0M |
| Summit Global Investments | 0.06% | New | 21,320 | $1.0M |
| XTX Topco Ltd | 0.03% | Add +3.6% | 20,643 | $970K |
"% of holder's portfolio" is AAMI's weight in each manager's 13F, not the share of Acadian Asset Management Inc. the manager owns.