ANNX Annexon, Inc.
Annexon, Inc. (ANNX) 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 |
|---|---|---|---|---|---|---|
| Logos Global Management Growth Healthcare | New | +1.50M | — | $8.6M | 0.4% | 59 |
| Magnetar Capital Event Quant | Sold Out | -14.2K | -100.0% | $81.1K | 0.0% | 54 |
| Moore Capital Management Macro | New | +425.3K | — | $2.4M | 0.1% | 54 |
| ADAR1 Capital Management Long/Short Growth | Sold Out | -55.0K | -100.0% | $314.1K | 0.0% | 53 |
| Woodline Partners LP Long/Short | Increased | +4.59M | +196.3% | $26.2M | 0.1% | 53 |
| ExodusPoint Capital Management Long/Short Quant | Sold Out | -14.9K | -100.0% | $85.3K | 0.0% | 52 |
| Man Group Event Long/Short | Sold Out | -109.2K | -100.0% | $623.7K | 0.0% | 52 |
| Jain Global Long/Short Quant | New | +64.7K | — | $369.5K | 0.0% | 52 |
| Squarepoint Ops LLC Quant | Increased | +105.3K | +155.0% | $601.4K | 0.0% | 48 |
| Schonfeld Strategic Advisors Long/Short Quant | Increased | +410.3K | +332.8% | $2.3M | 0.0% | 47 |
Most significant buyers
By move score, not size.
- Logos Global Management
- Moore Capital Management
- Woodline Partners LP
- Jain Global
- Squarepoint Ops LLC
Most significant sellers
By move score, not size.
- Magnetar Capital
- ADAR1 Capital Management
- ExodusPoint Capital Management
- Man Group
- MARSHALL WACE, LLP
Hedge fund positions
| Fund | Tier | Shares | Previous | Change | Change % | Portfolio wt. | Action | Score |
|---|---|---|---|---|---|---|---|---|
| Logos Global Management | 2 | 1.5M | 0 | +1.50M | — | 0.4% | New | 59 |
| Magnetar Capital | 2 | 0 | 14.2K | -14.2K | -100.0% | 0.0% | Sold Out | 54 |
| Moore Capital Management | 3 | 425.3K | 0 | +425.3K | — | 0.1% | New | 54 |
| ADAR1 Capital Management | 3 | 0 | 55.0K | -55.0K | -100.0% | 0.0% | Sold Out | 53 |
| Woodline Partners LP | 2 | 6.9M | 2.3M | +4.59M | +196.3% | 0.1% | Increased | 53 |
| ExodusPoint Capital Management | 3 | 0 | 14.9K | -14.9K | -100.0% | 0.0% | Sold Out | 52 |
| Man Group | 3 | 0 | 109.2K | -109.2K | -100.0% | 0.0% | Sold Out | 52 |
| Jain Global | 3 | 64.7K | 0 | +64.7K | — | 0.0% | New | 52 |
| Squarepoint Ops LLC | 2 | 173.3K | 68.0K | +105.3K | +155.0% | 0.0% | Increased | 48 |
| Schonfeld Strategic Advisors | 3 | 533.6K | 123.3K | +410.3K | +332.8% | 0.0% | Increased | 47 |
| MARSHALL WACE, LLP | 2 | 210.6K | 861.5K | -650.9K | -75.6% | 0.0% | Reduced | 46 |
| D. E. Shaw & Co., Inc. | 1 | 265.3K | 702.8K | -437.5K | -62.3% | 0.0% | Reduced | 44 |
| Winton Group | 4 | 47.8K | 24.1K | +23.7K | +98.3% | 0.0% | Increased | 42 |
| Quantbot Technologies | 4 | 1.6K | 308 | +1.3K | +407.1% | 0.0% | Increased | 39 |
| Engineers Gate | 4 | 319.1K | 174.1K | +144.9K | +83.2% | 0.0% | Increased | 38 |
| Quadrature Capital | 3 | 27.9K | 16.9K | +11.0K | +64.8% | 0.0% | Increased | 38 |
| Point72 Asset Management, L.P. | 1 | 1.4M | 1.9M | -489.1K | -26.1% | 0.0% | Reduced | 37 |
| Voloridge Investment Management | 2 | 250.0K | 462.1K | -212.0K | -45.9% | 0.0% | Reduced | 36 |
| Balyasny Asset Management L.P. | 2 | 2.8M | 3.9M | -1.06M | -27.2% | 0.0% | Reduced | 35 |
| Brevan Howard Capital Management | 3 | 25.3K | 58.4K | -33.1K | -56.7% | 0.0% | Reduced | 33 |
| ADAGE CAPITAL PARTNERS GP, L.L.C. | 2 | 3.5M | 4.3M | -800.0K | -18.6% | 0.0% | Reduced | 31 |
| RENAISSANCE TECHNOLOGIES LLC | 1 | 459.0K | 544.3K | -85.3K | -15.7% | 0.0% | Reduced | 31 |
| Y-Intercept | 4 | 734.6K | 1.3M | -585.3K | -44.3% | 0.1% | Reduced | 31 |
| Qube Research & Technologies Ltd | 2 | 2.7M | 3.1M | -364.4K | -11.7% | 0.0% | Reduced | 29 |
| TWO SIGMA INVESTMENTS, LP | 2 | 512.8K | 471.4K | +41.4K | +8.8% | 0.0% | Increased | 28 |
| J. Goldman & Co. | 3 | 116.0K | 170.8K | -54.8K | -32.1% | 0.0% | Reduced | 27 |
| MILLENNIUM MANAGEMENT LLC | 2 | 1.2M | 1.2M | -53.7K | -4.3% | 0.0% | Reduced | 27 |
| CITADEL ADVISORS LLC | 1 | 596.6K | 600.1K | -3.6K | -0.6% | 0.0% | Reduced | 27 |
| Boothbay Fund Management | 4 | 120.1K | 166.2K | -46.0K | -27.7% | 0.0% | Reduced | 25 |
| Cinctive Capital Management | 3 | 215.7K | 268.6K | -52.9K | -19.7% | 0.1% | Reduced | 24 |
| AQR Capital Management | 3 | 691.8K | 777.3K | -85.4K | -11.0% | 0.0% | Reduced | 22 |
| Trexquant Investment | 3 | 409.7K | 403.7K | +6.0K | +1.5% | 0.0% | Increased | 20 |
| Palo Alto Investors | 2 | 2.9M | 2.9M | 0 | +0.0% | 2.4% | Unchanged | 32 |
| Biotechnology Value Fund | 1 | 8.7M | 8.7M | 0 | +0.0% | 1.3% | Unchanged | 30 |
| Deerfield Management | 1 | 583.9K | 583.9K | 0 | +0.0% | 0.0% | Unchanged | 25 |
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.