ARGX argenx SE
argenx SE (ARGX) 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 |
|---|---|---|---|---|---|---|
| Baker Bros. Advisors Growth Healthcare | Sold Out | -25.2K | -100.0% | $23.4M | 0.0% | 66 |
| Point72 Asset Management, L.P. | New | +40.0K | — | $37.1M | 0.1% | 64 |
| Braidwell Growth Healthcare | Reduced | -67.2K | -79.2% | $62.4M | 0.6% | 63 |
| Balyasny Asset Management L.P. | Sold Out | -13.1K | -100.0% | $12.2M | 0.0% | 61 |
| Woodline Partners LP Long/Short | New | +55.0K | — | $51.1M | 0.2% | 61 |
| Rock Springs Capital Management Growth Healthcare | Reduced | -45.8K | -46.4% | $42.4M | 2.4% | 59 |
| Alyeska Investment Group, L.P. | New | +2.8K | — | $2.6M | 0.0% | 58 |
| Soleus Capital Management Growth Healthcare | Increased | +16.5K | +470.1% | $15.3M | 0.6% | 58 |
| Verition Fund Management Event Long/Short | New | +1.0K | — | $927.8K | 0.0% | 54 |
| Cinctive Capital Management Long/Short Quant | Sold Out | -7.7K | -100.0% | $7.1M | 0.0% | 53 |
Most significant buyers
By move score, not size.
- Point72 Asset Management, L.P.
- Woodline Partners LP
- Alyeska Investment Group, L.P.
- Soleus Capital Management
- Verition Fund Management
Most significant sellers
By move score, not size.
- Baker Bros. Advisors
- Braidwell
- Balyasny Asset Management L.P.
- Rock Springs Capital Management
- Cinctive Capital Management
Hedge fund positions
| Fund | Tier | Shares | Previous | Change | Change % | Portfolio wt. | Action | Score |
|---|---|---|---|---|---|---|---|---|
| Baker Bros. Advisors | 1 | 0 | 25.2K | -25.2K | -100.0% | 0.0% | Sold Out | 66 |
| Point72 Asset Management, L.P. | 1 | 40.0K | 0 | +40.0K | — | 0.1% | New | 64 |
| Braidwell | 2 | 17.7K | 84.9K | -67.2K | -79.2% | 0.6% | Reduced | 63 |
| Balyasny Asset Management L.P. | 2 | 0 | 13.1K | -13.1K | -100.0% | 0.0% | Sold Out | 61 |
| Woodline Partners LP | 2 | 55.0K | 0 | +55.0K | — | 0.2% | New | 61 |
| Rock Springs Capital Management | 3 | 52.8K | 98.5K | -45.8K | -46.4% | 2.4% | Reduced | 59 |
| Alyeska Investment Group, L.P. | 2 | 2.8K | 0 | +2.8K | — | 0.0% | New | 58 |
| Soleus Capital Management | 2 | 20.0K | 3.5K | +16.5K | +470.1% | 0.6% | Increased | 58 |
| Verition Fund Management | 2 | 1.0K | 0 | +1.0K | — | 0.0% | New | 54 |
| Cinctive Capital Management | 3 | 0 | 7.7K | -7.7K | -100.0% | 0.0% | Sold Out | 53 |
| Squarepoint Ops LLC | 2 | 58.4K | 18.7K | +39.7K | +212.7% | 0.1% | Increased | 53 |
| Trexquant Investment | 3 | 0 | 7.0K | -7.0K | -100.0% | 0.0% | Sold Out | 53 |
| D. E. Shaw & Co., Inc. | 1 | 8.3K | 52.1K | -43.9K | -84.1% | 0.0% | Reduced | 52 |
| Aquatic Capital Management | 4 | 7.7K | 0 | +7.7K | — | 0.2% | New | 51 |
| Jain Global | 3 | 18.9K | 4.6K | +14.3K | +307.5% | 0.3% | Increased | 51 |
| Voleon Capital Management | 3 | 217 | 0 | +217 | — | 0.0% | New | 51 |
| Y-Intercept | 4 | 0 | 5.9K | -5.9K | -100.0% | 0.0% | Sold Out | 51 |
| Caption Management | 3 | 1.0K | 0 | +1.0K | — | 0.0% | New | 50 |
| TWO SIGMA INVESTMENTS, LP | 2 | 185.6K | 109.1K | +76.5K | +70.1% | 0.1% | Increased | 50 |
| OrbiMed Advisors | 2 | 92.9K | 136.9K | -44.0K | -32.2% | 1.6% | Reduced | 49 |
| CenterBook Partners | 4 | 475 | 13.9K | -13.5K | -96.6% | 0.0% | Reduced | 48 |
| Hudson Bay Capital Management | 3 | 5.0K | 30.0K | -25.0K | -83.3% | 0.0% | Reduced | 48 |
| Engineers Gate | 4 | 0 | 540 | -540 | -100.0% | 0.0% | Sold Out | 48 |
| AQR Capital Management | 3 | 10.7K | 2.5K | +8.1K | +321.7% | 0.0% | Increased | 47 |
| Bridgewater Associates | 1 | 2.0K | 1.2K | +744 | +61.3% | 0.0% | Increased | 45 |
| LMR Partners | 3 | 8.2K | 23.5K | -15.3K | -65.1% | 0.1% | Reduced | 43 |
| ADAGE CAPITAL PARTNERS GP, L.L.C. | 2 | 50.6K | 90.0K | -39.4K | -43.8% | 0.1% | Reduced | 40 |
| Boothbay Fund Management | 4 | 360 | 1.7K | -1.3K | -78.9% | 0.0% | Reduced | 39 |
| Qube Research & Technologies Ltd | 2 | 14.6K | 25.5K | -11.0K | -43.0% | 0.0% | Reduced | 39 |
| MILLENNIUM MANAGEMENT LLC | 2 | 94.4K | 72.4K | +22.0K | +30.5% | 0.1% | Increased | 38 |
| Walleye Capital | 3 | 15 | 51 | -36 | -70.6% | 0.0% | Reduced | 38 |
| CITADEL ADVISORS LLC | 1 | 212.4K | 219.1K | -6.7K | -3.1% | 0.1% | Reduced | 30 |
| Voloridge Investment Management | 2 | 18.8K | 22.7K | -3.9K | -17.0% | 0.1% | Reduced | 29 |
| Winton Group | 4 | 480 | 760 | -280 | -36.8% | 0.0% | Reduced | 27 |
| Avoro Capital Advisors | 1 | 1.0M | 1.0M | 0 | +0.0% | 8.3% | Unchanged | 49 |
| RTW Investments | 1 | 709.4K | 709.4K | 0 | +0.0% | 5.6% | Unchanged | 50 |
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.