AAMI Acadian Asset Management Inc.
Acadian Asset Management Inc. (AAMI) Hedge Fund Activity
This view isolates hedge funds from the broader institutional ownership shown on the Institutional tab. A pension fund tracking an index may have no view on a stock; when a hedge fund builds or exits a position, that decision can carry information. This page measures those changes. Positions as of June 30, 2026.
Based on quarterly 13F long-equity filings. Changes compare reported quarter-end positions; filings can be reported up to 45 days later and do not represent a fund's complete exposure.
Most significant moves
Ranked by conviction, not size — how much of the fund's own book the position represents, how far it moved, and what kind of fund made it.
| Fund | Action | Shares changed | Change | Est. value | Portfolio wt. | Score |
|---|---|---|---|---|---|---|
| Point72 Asset Management, L.P. | New | +18.8K | — | $1.3M | 0.0% | 61 |
| HBK Investments Event | New | +10.0K | — | $715.2K | 0.0% | 60 |
| Ghisallo Capital Management Long/Short | New | +85.4K | — | $6.1M | 0.2% | 58 |
| Squarepoint Ops LLC Quant | New | +29.2K | — | $2.1M | 0.0% | 57 |
| Weiss Asset Management Event Quant | New | +25.7K | — | $1.8M | 0.0% | 56 |
| Quadrature Capital Quant | New | +17.9K | — | $1.3M | 0.0% | 55 |
| Man Group Event Long/Short | Sold Out | -118.1K | -100.0% | $8.4M | 0.0% | 54 |
| Capstone Investment Advisors Quant Macro | New | +11.2K | — | $798.5K | 0.0% | 53 |
| Cinctive Capital Management Long/Short Quant | New | +15.9K | — | $1.1M | 0.0% | 52 |
| Edgestream Partners Quant | New | +4.3K | — | $309.5K | 0.0% | 49 |
Most significant buyers
By move score, not size.
- Point72 Asset Management, L.P.
- HBK Investments
- Ghisallo Capital Management
- Squarepoint Ops LLC
- Weiss Asset Management
Most significant sellers
By move score, not size.
- Man Group
- Qube Research & Technologies Ltd
- Empyrean Capital Partners
- North Reef Capital Management
- RENAISSANCE TECHNOLOGIES LLC
Hedge fund positions
| Fund | Tier | Shares | Previous | Change | Change % | Portfolio wt. | Action | Score |
|---|---|---|---|---|---|---|---|---|
| Point72 Asset Management, L.P. | 1 | 18.8K | 0 | +18.8K | — | 0.0% | New | 61 |
| HBK Investments | 1 | 10.0K | 0 | +10.0K | — | 0.0% | New | 60 |
| Ghisallo Capital Management | 2 | 85.4K | 0 | +85.4K | — | 0.2% | New | 58 |
| Squarepoint Ops LLC | 2 | 29.2K | 0 | +29.2K | — | 0.0% | New | 57 |
| Weiss Asset Management | 2 | 25.7K | 0 | +25.7K | — | 0.0% | New | 56 |
| Quadrature Capital | 3 | 17.9K | 0 | +17.9K | — | 0.0% | New | 55 |
| Man Group | 3 | 0 | 118.1K | -118.1K | -100.0% | 0.0% | Sold Out | 54 |
| Capstone Investment Advisors | 3 | 11.2K | 0 | +11.2K | — | 0.0% | New | 53 |
| Cinctive Capital Management | 3 | 15.9K | 0 | +15.9K | — | 0.0% | New | 52 |
| Edgestream Partners | 4 | 4.3K | 0 | +4.3K | — | 0.0% | New | 49 |
| CenterBook Partners | 4 | 4.7K | 0 | +4.7K | — | 0.0% | New | 49 |
| Walleye Capital | 3 | 82.6K | 19.6K | +63.0K | +321.6% | 0.0% | Increased | 47 |
| Trexquant Investment | 3 | 62.7K | 17.3K | +45.4K | +262.2% | 0.0% | Increased | 47 |
| Azora Capital | 2 | 496.0K | 329.3K | +166.7K | +50.6% | 1.5% | Increased | 47 |
| Aquatic Capital Management | 4 | 31.9K | 8.3K | +23.6K | +282.7% | 0.1% | Increased | 44 |
| Brevan Howard Capital Management | 3 | 19.8K | 7.2K | +12.6K | +173.3% | 0.0% | Increased | 43 |
| Qube Research & Technologies Ltd | 2 | 55.8K | 174.9K | -119.1K | -68.1% | 0.0% | Reduced | 43 |
| Empyrean Capital Partners | 2 | 1.3M | 1.3M | -190 | -+0.0% | 3.9% | Reduced | 43 |
| North Reef Capital Management | 2 | 86.6K | 220.2K | -133.6K | -60.7% | 0.2% | Reduced | 42 |
| RENAISSANCE TECHNOLOGIES LLC | 1 | 31.7K | 60.5K | -28.9K | -47.7% | 0.0% | Reduced | 41 |
| D. E. Shaw & Co., Inc. | 1 | 33.7K | 56.4K | -22.7K | -40.2% | 0.0% | Reduced | 39 |
| AQR Capital Management | 3 | 254.1K | 159.7K | +94.4K | +59.1% | 0.0% | Increased | 36 |
| CITADEL ADVISORS LLC | 1 | 61.9K | 81.0K | -19.1K | -23.6% | 0.0% | Reduced | 35 |
| MILLENNIUM MANAGEMENT LLC | 2 | 51.9K | 69.3K | -17.4K | -25.2% | 0.0% | Reduced | 35 |
| Woodline Partners LP | 2 | 883.5K | 701.7K | +181.8K | +25.9% | 0.2% | Increased | 34 |
| Voleon Capital Management | 3 | 11.3K | 23.0K | -11.7K | -50.8% | 0.0% | Reduced | 33 |
| TWO SIGMA INVESTMENTS, LP | 2 | 523.9K | 478.8K | +45.1K | +9.4% | 0.0% | Increased | 30 |
| Engineers Gate | 4 | 34.0K | 52.7K | -18.7K | -35.5% | 0.0% | Reduced | 28 |
| Y-Intercept | 4 | 32.5K | 22.9K | +9.6K | +41.8% | 0.0% | Increased | 28 |
| Quantbot Technologies | 4 | 942 | 1.3K | -309 | -24.7% | 0.0% | Reduced | 20 |
| Systematic Alpha Investments | 2 | 370.1K | 370.1K | 0 | +0.0% | 1.1% | Unchanged | 23 |
| MARSHALL WACE, LLP | 2 | 4.0K | 4.0K | 0 | +0.0% | 0.0% | Unchanged | 20 |
Every fund above opens. Subscribers can see any manager's whole portfolio — every position, its weight, and what they bought, trimmed and exited last quarter.
Sign in or subscribeHedge funds are identified from their 13F filings, which are due 45 days after quarter end and cover long U.S.-listed equity positions only. A fund's short book never appears, so a reduced position can mean a changed view or a changed hedge — the filing doesn't say which.