Acadian Asset ManagementAAMI
13F holders, Q3 2025 (September 30)250holders +32
51new positions
20sold out
8famous investors
$48.12avg. 13F price*
At the end of Q3 2025, 250 institutions reported holding Acadian Asset Management Inc. (AAMI) in their 13F filings, up 32 from Q2 2025. 51 opened new positions and 20 sold out. The largest holders were Paulson & Co. ($372.9M), BlackRock, Inc. ($229.4M) and Vanguard Group Inc. ($113.1M). 8 famous investors held it, including John Paulson (12.6% of Paulson & Co.'s portfolio), George Soros (0.5% of Soros Fund Management's portfolio) and Paul Tudor Jones (0.1% 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 Q2 2025 → Q3 2025
| Institutions | Total Value | |
|---|---|---|
| New Positions | 51 | $79.4M |
| Exits | 20 | $10.2M |
All 13F filers, Q2 2025 → Q3 2025: 3,494,486 shares bought and 4,299,196 shares sold, net −804,710 shares. Counts holders who added, trimmed, opened or closed a position; split-adjusted.
Ownership 250 holders
| Paulson & Co. | 12.56% | Reduce -13.5% | 7,743,282 | $372.9M |
| BlackRock, Inc. | 0.00% | Reduce -6.5% | 4,762,717 | $229.4M |
| Vanguard Group Inc. | 0.00% | Reduce -1.4% | 2,348,586 | $113.1M |
| Jennison Associates LLC | 0.05% | Reduce -17.3% | 1,729,842 | $83.3M |
| Empyrean Capital Partners, LP | 3.32% | Reduce -18.1% | 1,541,108 | $74.2M |
| State Street Corp. | 0.00% | Reduce -1.1% | 1,200,703 | $57.8M |
| Dimensional Fund Advisors LP | 0.01% | Reduce -2.4% | 953,382 | $45.9M |
| Impax Asset Management Group plc | 0.22% | Reduce -23.4% | 765,484 | $36.9M |
| Geode Capital Management, LLC | 0.00% | Add +4.6% | 656,190 | $31.6M |
| Nuveen, LLC | 0.01% | Add +1.4% | 640,554 | $30.8M |
| Arrowstreet Capital, Limited Partnership | 0.02% | Add +1.4% | 619,344 | $29.8M |
| North Reef Capital Management LP | 1.15% | Add +6.5% | 511,452 | $24.6M |
| Morgan Stanley | 0.00% | Add +4.9% | 470,764 | $22.7M |
| Soros Fund Management | 0.50% | Add +10.0% | 457,128 | $22.0M |
| Charles Schwab Investment Management Inc. | 0.00% | Add +15.2% | 448,961 | $21.6M |
| Invesco Ltd. | 0.00% | Add +72.1% | 420,414 | $20.2M |
| Jacobs Levy Equity Management, Inc. | 0.08% | New | 416,498 | $20.1M |
| GW&K Investment Management, LLC | 0.16% | New | 383,707 | $18.5M |
| Systematic Alpha Investments, LLC | 0.59% | No change | 370,108 | $17.8M |
| Federated Hermes, Inc. | 0.03% | Add +18.0% | 342,621 | $16.5M |
| Two Sigma Advisers, LP | 0.03% | Reduce -12.0% | 309,575 | $14.9M |
| Two Sigma Investments, LP | 0.02% | Add +24.5% | 306,296 | $14.8M |
| Northern Trust Corp. | 0.00% | Reduce -5.1% | 287,752 | $13.9M |
| William Blair Investment Management, LLC | 0.04% | Reduce -60.5% | 281,318 | $13.5M |
| Allspring Global Investments Holdings, LLC | 0.02% | Add +37.4% | 289,038 | $13.4M |
| Amundi | 0.00% | New | 252,410 | $11.4M |
| Tudor Investment Corporation | 0.07% | Add +42.6% | 225,579 | $10.9M |
| Goldman Sachs Group Inc. | 0.00% | Add +59.5% | 218,586 | $10.5M |
| Bank of New York Mellon Corp | 0.00% | Reduce -7.3% | 208,778 | $10.1M |
| Millennium Management | 0.01% | Add +1308.3% | 202,285 | $9.7M |
| UBS Group AG | 0.00% | Reduce -23.6% | 176,236 | $8.5M |
| Qube Research & Technologies Ltd | 0.01% | Add +34.2% | 165,135 | $8.0M |
| Deutsche Bank AG | 0.00% | Reduce -5.1% | 153,726 | $7.4M |
| Jane Street Group, LLC | 0.01% | Add +926.0% | 153,464 | $7.4M |
| Principal Financial Group Inc. | 0.00% | Add +15.2% | 153,462 | $7.4M |
| Brightlight Capital Management LP | 4.37% | Reduce -24.9% | 150,100 | $7.2M |
| FMR LLC | 0.00% | Add +51.7% | 147,158 | $7.1M |
| Man Group plc | 0.01% | Add +19.6% | 127,151 | $6.1M |
| Victory Capital Management Inc. | 0.00% | Reduce -59.5% | 120,655 | $5.8M |
| EJF Capital LP | 3.25% | Reduce -7.3% | 116,043 | $5.6M |
| Jupiter Asset Management Ltd. | 0.04% | Add +56.8% | 105,232 | $5.1M |
| Public Sector Pension Investment Board | 0.02% | Reduce -9.8% | 103,369 | $5.0M |
| JPMorgan Chase & Co. | 0.00% | Reduce -50.1% | 98,573 | $4.7M |
| Informed Momentum Co LLC | 0.54% | Reduce -4.8% | 99,149 | $4.7M |
| Algert Global LLC | 0.07% | Add +28.7% | 89,107 | $4.3M |
| D. E. Shaw & Co. | 0.00% | Reduce -10.6% | 88,095 | $4.2M |
| LSV Asset Management | 0.01% | Add +8.5% | 84,400 | $4.1M |
| Ameriprise Financial Inc. | 0.00% | Reduce -22.2% | 83,547 | $4.0M |
| Dark Forest Capital Management LP | 0.15% | Add +145.4% | 83,543 | $4.0M |
| Bank of America Corp. | 0.00% | Reduce -15.8% | 82,799 | $4.0M |
| Rhumbline Advisers | 0.00% | Reduce -2.1% | 80,044 | $3.9M |
| Voloridge Investment Management, LLC | 0.01% | Add +412.7% | 79,591 | $3.8M |
| AQR Capital Management | 0.00% | Add +14.9% | 76,608 | $3.7M |
| American Century Companies Inc. | 0.00% | Add +45.5% | 73,210 | $3.5M |
| Legal & General Group Plc | 0.00% | Reduce -3.2% | 71,106 | $3.4M |
| Woodline Partners LP | 0.02% | New | 70,982 | $3.4M |
| Allianz Asset Management GmbH | 0.00% | Add +100.3% | 66,430 | $3.2M |
| Renaissance Technologies | 0.00% | Reduce -33.9% | 66,100 | $3.2M |
| UBS AM, a distinct business unit of UBS ASSET MANAGEMENT AMERICAS LLC | 0.00% | Reduce -47.7% | 65,716 | $3.2M |
| Kestrel Investment Management Corp. | 1.77% | No change | 65,381 | $3.1M |
| Janus Henderson Group PLC | 0.00% | Add +420.8% | 64,750 | $3.1M |
| Citadel Advisors | 0.00% | Reduce -44.7% | 63,953 | $3.1M |
| Teacher Retirement System of Texas | 0.01% | Reduce -2.6% | 61,043 | $2.9M |
| Brant Point Investment Management LLC | 0.64% | Add +127.2% | 60,000 | $2.9M |
| Nearwater Capital Markets, Ltd | 0.04% | New | 60,000 | $2.9M |
| Prudential Financial Inc. | 0.00% | Add +104.8% | 57,676 | $2.8M |
| Barclays PLC | 0.00% | Reduce -16.8% | 57,452 | $2.8M |
| Boston Partners | 0.00% | Add +14.5% | 56,188 | $2.7M |
| Engineers Gate Manager LP | 0.03% | Add +95.5% | 56,028 | $2.7M |
| Swiss National Bank | 0.00% | Reduce -1.9% | 52,126 | $2.5M |
| Prelude Capital Management, LLC | 0.19% | Reduce -18.4% | 51,179 | $2.5M |
| Citigroup Inc. | 0.00% | Add +105.9% | 51,031 | $2.5M |
| Cubist Systematic Strategies, LLC | 0.03% | Add +626.2% | 48,025 | $2.3M |
| Royce & Associates LP | 0.02% | Reduce -9.2% | 47,652 | $2.3M |
| Trexquant Investment LP | 0.02% | New | 45,977 | $2.2M |
| Franklin Resources Inc. | 0.00% | Add +14.2% | 42,333 | $2.0M |
| Zacks Investment Management | 0.02% | New | 42,207 | $2.0M |
| Envestnet Asset Management Inc. | 0.00% | New | 42,186 | $2.0M |
| Squarepoint Ops LLC | 0.00% | New | 38,380 | $1.8M |
| State of Wisconsin Investment Board | 0.00% | Add +329.4% | 37,997 | $1.8M |
| BNP Paribas Financial Markets | 0.00% | Add +53.3% | 37,014 | $1.8M |
| Hillsdale Investment Management Inc. | 0.05% | Reduce -40.0% | 36,100 | $1.7M |
| Alliancebernstein L.P. | 0.00% | Reduce -1.7% | 35,426 | $1.7M |
| Susquehanna Portfolio Strategies, LLC | 0.03% | No change | 35,357 | $1.7M |
| Russell Investments Group, Ltd. | 0.00% | Add +1116.1% | 33,541 | $1.6M |
| Universal- Beteiligungs- und Servicegesellschaft mbH | 0.00% | Add +220.0% | 32,726 | $1.6M |
| ExodusPoint Capital Management, LP | 0.02% | New | 32,160 | $1.5M |
| Martingale Asset Management L P | 0.04% | Add +6.1% | 31,728 | $1.5M |
| Credit Agricole S A | 0.00% | — | 30,479 | $1.5M |
| Linden Thomas Advisory Services, LLC | 0.14% | Add +4.4% | 29,066 | $1.4M |
| Royal Bank of Canada | 0.00% | Add +881.3% | 28,370 | $1.4M |
| DGS Capital Management, LLC | 0.24% | Add +2.9% | 27,027 | $1.3M |
| Sei Investments Co. | 0.00% | Reduce -12.8% | 26,635 | $1.3M |
| HRT Financial LP | 0.00% | New | 26,521 | $1.3M |
| HSBC Holdings PLC | 0.00% | Reduce -12.5% | 26,470 | $1.3M |
| Creative Planning | 0.00% | Add +11.9% | 25,956 | $1.3M |
| LPL Financial LLC | 0.00% | Reduce -0.6% | 25,872 | $1.2M |
| Integrated Quantitative Investments LLC | 0.34% | New | 25,118 | $1.2M |
| WINTON GROUP Ltd | 0.05% | Add +328.3% | 25,057 | $1.2M |
| California State Teachers Retirement System | 0.00% | Reduce -8.5% | 24,959 | $1.2M |
"% of holder's portfolio" is AAMI's weight in each manager's 13F, not the share of Acadian Asset Management Inc. the manager owns.