AAMI Acadian Asset Management Inc.
Acadian Asset Management Inc. (AAMI) Institutional Ownership
What the institutions did with AAMI last quarter, from their 13F filings. Counting managers rather than shares is the point: a single index fund adding to a position tells you far less than four hundred separate managers all deciding to. Positions as reported for the quarter ended June 30, 2026.
Every manager below opens. Subscribers can see any firm's whole portfolio — every position, its weight, and what they bought, trimmed and exited last quarter.
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Each block is one manager, sized by shares held and colored by how much they moved the position last quarter. Green added, red cut, grey stood pat.
Largest holders
| Manager | Shares | % of reported |
|---|---|---|
| PAULSON & CO. INC. | 5.8M | 16.2% |
| BlackRock, Inc. | 4.5M | 12.5% |
| JENNISON ASSOCIATES LLC | 1.5M | 4.2% |
| Invesco Ltd. | 1.4M | 3.8% |
| Empyrean Capital Partners, LP | 1.3M | 3.6% |
| STATE STREET CORP | 1.2M | 3.4% |
| VANGUARD CAPITAL MANAGEMENT LLC | 1.2M | 3.3% |
| GEODE CAPITAL MANAGEMENT, LLC | 969.7K | 2.7% |
| DIMENSIONAL FUND ADVISORS LP | 911.7K | 2.5% |
| Woodline Partners LP | 883.5K | 2.5% |
| VANGUARD PORTFOLIO MANAGEMENT LLC | 813.4K | 2.3% |
| Driehaus Capital Management LLC | 788.9K | 2.2% |
| Avantyr Capital Partners, LP | 767.8K | 2.1% |
| MORGAN STANLEY | 623.4K | 1.7% |
| SOROS FUND MANAGEMENT LLC | 610.2K | 1.7% |
| Nuveen, LLC | 602.4K | 1.7% |
| FEDERATED HERMES, INC. | 574.6K | 1.6% |
| Allspring Global Investments Holdings, LLC | 553.6K | 1.5% |
| TWO SIGMA INVESTMENTS, LP | 523.9K | 1.5% |
| Azora Capital LP | 496.0K | 1.4% |
| CHARLES SCHWAB INVESTMENT MANAGEMENT INC | 403.3K | 1.1% |
| Systematic Alpha Investments, LLC | 370.1K | 1.0% |
| GW&K Investment Management, LLC | 368.9K | 1.0% |
| Impax Asset Management Group plc | 350.0K | 1.0% |
| Amundi | 317.3K | 0.9% |
Largest changes
| Manager | Action | Previous | Current | Change |
|---|---|---|---|---|
| PAULSON & CO. INC. | Reduced | 7.7M | 5.8M | -1.9M |
| Invesco Ltd. | Increased | 412.7K | 1.4M | +963.8K |
| Driehaus Capital Management LLC | New | 0 | 788.9K | +788.9K |
| Avantyr Capital Partners, LP | New | 0 | 767.8K | +767.8K |
| SG Americas Securities, LLC | Reduced | 603.7K | 91.6K | -512.1K |
| JENNISON ASSOCIATES LLC | Reduced | 2.0M | 1.5M | -495.6K |
| Impax Asset Management Group plc | Reduced | 823.3K | 350.0K | -473.3K |
| Amundi | New | 0 | 317.3K | +317.3K |
| HEALTHCARE OF ONTARIO PENSION PLAN TRUST FUND | Increased | 21.3K | 249.1K | +227.8K |
| GEODE CAPITAL MANAGEMENT, LLC | Increased | 747.8K | 969.7K | +221.9K |
| Woodline Partners LP | Increased | 701.7K | 883.5K | +181.8K |
| Azora Capital LP | Increased | 329.3K | 496.0K | +166.7K |
| JACOBS LEVY EQUITY MANAGEMENT, INC | Reduced | 318.1K | 151.8K | -166.3K |
| Allspring Global Investments Holdings, LLC | Increased | 419.2K | 553.6K | +134.4K |
| North Reef Capital Management LP | Reduced | 220.2K | 86.6K | -133.6K |
| Qube Research & Technologies Ltd | Reduced | 174.9K | 55.8K | -119.1K |
| Man Group plc | Sold Out | 118.1K | 0 | -118.1K |
| AQR CAPITAL MANAGEMENT LLC | Increased | 159.7K | 254.1K | +94.4K |
| ARROWSTREET CAPITAL, LIMITED PARTNERSHIP | Reduced | 241.2K | 149.3K | -91.9K |
| Karl Kapital LLC | Sold Out | 90.0K | 0 | -90.0K |
| DEUTSCHE BANK AG\ | Reduced | 119.7K | 29.7K | -90.0K |
| BlackRock, Inc. | Reduced | 4.6M | 4.5M | -87.7K |
| MORGAN STANLEY | Increased | 537.6K | 623.4K | +85.8K |
| Ghisallo Capital Management LLC | New | 0 | 85.4K | +85.4K |
| Informed Momentum Co LLC | New | 0 | 82.4K | +82.4K |
| Universal- Beteiligungs- und Servicegesellschaft mbH | Increased | 27.2K | 105.4K | +78.2K |
| VANGUARD PORTFOLIO MANAGEMENT LLC | Reduced | 883.9K | 813.4K | -70.6K |
| Walleye Capital LLC | Increased | 19.6K | 82.6K | +63.0K |
| KESTREL INVESTMENT MANAGEMENT CORP | Sold Out | 62.4K | 0 | -62.4K |
| WILLIAM BLAIR INVESTMENT MANAGEMENT, LLC | Reduced | 263.7K | 207.8K | -55.9K |
| CHARLES SCHWAB INVESTMENT MANAGEMENT INC | Reduced | 453.3K | 403.3K | -50.0K |
| Rockefeller Capital Management L.P. | Increased | 458 | 50.0K | +49.6K |
| Assenagon Asset Management S.A. | Sold Out | 45.8K | 0 | -45.8K |
| Trexquant Investment LP | Increased | 17.3K | 62.7K | +45.4K |
| TWO SIGMA INVESTMENTS, LP | Increased | 478.8K | 523.9K | +45.1K |
| MACKENZIE FINANCIAL CORP | New | 0 | 40.1K | +40.1K |
| SOROS FUND MANAGEMENT LLC | Reduced | 648.8K | 610.2K | -38.6K |
| UBS AM, a distinct business unit of UBS ASSET MANAGEMENT AMERICAS LLC | Increased | 67.4K | 103.5K | +36.1K |
| Susquehanna Portfolio Strategies, LLC | Sold Out | 35.4K | 0 | -35.4K |
| JANE STREET GROUP, LLC | Sold Out | 31.9K | 0 | -31.9K |
| Squarepoint Ops LLC | New | 0 | 29.2K | +29.2K |
| RENAISSANCE TECHNOLOGIES LLC | Reduced | 60.5K | 31.7K | -28.9K |
| RAYMOND JAMES FINANCIAL INC | Increased | 7.4K | 36.2K | +28.8K |
| ZACKS INVESTMENT MANAGEMENT | Reduced | 50.9K | 22.3K | -28.5K |
| CITIGROUP INC | Increased | 15.5K | 43.8K | +28.3K |
| THORNBURG INVESTMENT MANAGEMENT INC | Increased | 27.8K | 55.8K | +28.0K |
| Diametric Capital, LP | New | 0 | 27.8K | +27.8K |
| HRT FINANCIAL LP | Sold Out | 25.9K | 0 | -25.9K |
| Weiss Asset Management LP | New | 0 | 25.7K | +25.7K |
| GOLDMAN SACHS GROUP INC | Increased | 219.3K | 244.6K | +25.3K |
| NORTHERN TRUST CORP | Increased | 279.1K | 303.1K | +24.1K |
| INTECH INVESTMENT MANAGEMENT LLC | Reduced | 39.1K | 15.2K | -23.9K |
| Aquatic Capital Management LLC | Increased | 8.3K | 31.9K | +23.6K |
| LPL Financial LLC | Sold Out | 23.4K | 0 | -23.4K |
| UBS Group AG | Reduced | 216.8K | 193.7K | -23.1K |
| Fulcrum Asset Management LLP | New | 0 | 22.9K | +22.9K |
| D. E. Shaw & Co., Inc. | Reduced | 56.4K | 33.7K | -22.7K |
| ALGERT GLOBAL LLC | Reduced | 96.7K | 74.1K | -22.6K |
| PDT Partners, LLC | Increased | 13.7K | 36.2K | +22.5K |
| XTX Topco Ltd | Increased | 4.9K | 26.8K | +21.9K |
13F filings are due 45 days after quarter end and cover long positions in U.S.-listed equities only, so this is a lagged and partial picture: shorts, bonds and foreign listings never appear. Options positions are excluded here rather than folded into the share counts. Political ownership is coming.