ATRC AtriCure, Inc.
AtriCure, Inc. (ATRC) 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 | +604.4K | — | $16.9M | 0.0% | 64 |
| MILLENNIUM MANAGEMENT LLC | Sold Out | -179.9K | -100.0% | $5.0M | 0.0% | 59 |
| Balyasny Asset Management L.P. | Sold Out | -17.3K | -100.0% | $484.0K | 0.0% | 57 |
| Bridgewater Associates Quant Macro | Increased | +42.8K | +127.7% | $1.2M | 0.0% | 57 |
| ExodusPoint Capital Management Long/Short Quant | New | +86.4K | — | $2.4M | 0.0% | 54 |
| D. E. Shaw & Co., Inc. Quant | Increased | +136.2K | +240.7% | $3.8M | 0.0% | 54 |
| CITADEL ADVISORS LLC Quant | Increased | +90.0K | +103.0% | $2.5M | 0.0% | 54 |
| Caxton Associates Macro | Sold Out | -10.5K | -100.0% | $293.0K | 0.0% | 53 |
| Quadrature Capital Quant | New | +21.6K | — | $603.4K | 0.0% | 53 |
| Caption Management Quant | New | +39.2K | — | $1.1M | 0.0% | 52 |
Most significant buyers
By move score, not size.
- Point72 Asset Management, L.P.
- Bridgewater Associates
- ExodusPoint Capital Management
- D. E. Shaw & Co., Inc.
- CITADEL ADVISORS LLC
Most significant sellers
By move score, not size.
- MILLENNIUM MANAGEMENT LLC
- Balyasny Asset Management L.P.
- Caxton Associates
- Graham Capital Management
- Divisadero Street Capital Management
Hedge fund positions
| Fund | Tier | Shares | Previous | Change | Change % | Portfolio wt. | Action | Score |
|---|---|---|---|---|---|---|---|---|
| Point72 Asset Management, L.P. | 1 | 604.4K | 0 | +604.4K | — | 0.0% | New | 64 |
| MILLENNIUM MANAGEMENT LLC | 2 | 0 | 179.9K | -179.9K | -100.0% | 0.0% | Sold Out | 59 |
| Balyasny Asset Management L.P. | 2 | 0 | 17.3K | -17.3K | -100.0% | 0.0% | Sold Out | 57 |
| Bridgewater Associates | 1 | 76.3K | 33.5K | +42.8K | +127.7% | 0.0% | Increased | 57 |
| ExodusPoint Capital Management | 3 | 86.4K | 0 | +86.4K | — | 0.0% | New | 54 |
| D. E. Shaw & Co., Inc. | 1 | 192.8K | 56.6K | +136.2K | +240.7% | 0.0% | Increased | 54 |
| CITADEL ADVISORS LLC | 1 | 177.3K | 87.3K | +90.0K | +103.0% | 0.0% | Increased | 54 |
| Caxton Associates | 3 | 0 | 10.5K | -10.5K | -100.0% | 0.0% | Sold Out | 53 |
| Quadrature Capital | 3 | 21.6K | 0 | +21.6K | — | 0.0% | New | 53 |
| Caption Management | 3 | 39.2K | 0 | +39.2K | — | 0.0% | New | 52 |
| Jain Global | 3 | 20.6K | 0 | +20.6K | — | 0.0% | New | 52 |
| Winton Group | 4 | 35.8K | 0 | +35.8K | — | 0.0% | New | 50 |
| Graham Capital Management | 3 | 0 | 9.6K | -9.6K | -100.0% | 0.0% | Sold Out | 49 |
| AQR Capital Management | 3 | 544.1K | 186.4K | +357.7K | +191.9% | 0.0% | Increased | 49 |
| CenterBook Partners | 4 | 8.5K | 0 | +8.5K | — | 0.0% | New | 49 |
| Brevan Howard Capital Management | 3 | 54.4K | 9.5K | +44.9K | +473.1% | 0.0% | Increased | 45 |
| Divisadero Street Capital Management | 2 | 800.9K | 1.2M | -359.0K | -31.0% | 0.5% | Reduced | 43 |
| Trexquant Investment | 3 | 26.8K | 143.1K | -116.3K | -81.3% | 0.0% | Reduced | 42 |
| Man Group | 3 | 24.4K | 85.1K | -60.7K | -71.3% | 0.0% | Reduced | 41 |
| Voloridge Investment Management | 2 | 50.6K | 97.2K | -46.6K | -48.0% | 0.0% | Reduced | 36 |
| RENAISSANCE TECHNOLOGIES LLC | 1 | 234.1K | 308.7K | -74.6K | -24.2% | 0.0% | Reduced | 35 |
| TWO SIGMA INVESTMENTS, LP | 2 | 525.8K | 751.0K | -225.2K | -30.0% | 0.0% | Reduced | 35 |
| ADAGE CAPITAL PARTNERS GP, L.L.C. | 2 | 100.0K | 150.0K | -50.0K | -33.3% | 0.0% | Reduced | 35 |
| Qube Research & Technologies Ltd | 2 | 560.8K | 454.8K | +106.0K | +23.3% | 0.0% | Increased | 32 |
| MARSHALL WACE, LLP | 2 | 1.3M | 1.5M | -133.6K | -9.1% | 0.0% | Reduced | 30 |
| Schonfeld Strategic Advisors | 3 | 68.2K | 101.7K | -33.4K | -32.9% | 0.0% | Reduced | 28 |
| Aquatic Capital Management | 4 | 16.7K | 11.8K | +4.9K | +41.5% | 0.0% | Increased | 27 |
| Engineers Gate | 4 | 48.2K | 42.9K | +5.3K | +12.3% | 0.0% | Increased | 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.