| Rank | Holder | SharesFloat % | Change | Date reported |
|---|---|---|---|---|
| 1 | HHG PLC | 1.28M (25.05%) | 128.33K Increased by +9.99% | Mar 31, 26 |
| 2 | Cormorant Asset Management, LLC | 1.06M (20.66%) | 0.00 Increased by 0.00% | Mar 31, 26 |
| 3 | BlackRock Inc | 621.93K (12.13%) | 227.89K Increased by +36.64% | Mar 31, 26 |
| 4 | Vivo Capital, LLC | 557.17K (10.87%) | 55.55K Increased by +9.97% | Mar 31, 26 |
| 5 | BRAIDWELL LP | 539.71K (10.53%) | 215.35K Increased by +39.90% | Mar 31, 26 |
| 6 | COMMODORE CAPITAL LP | 500.00K (9.75%) | 0.00 Increased by 0.00% | Sep 30, 25 |
| 7 | Adage Capital Partners Gp LLC | 495.74K (9.67%) | 100.00K Increased by +20.17% | Mar 31, 26 |
| 8 | Vestal Point Capital LP | 492.32K (9.60%) | 492.32K Increased by +100.00% | Mar 31, 26 |
| 9 | Driehaus Capital Management LLC | 432.51K (8.44%) | 162.87K Increased by +37.66% | Mar 31, 26 |
| 10 | Perceptive Advisors LLC | 377.54K (7.36%) | -71.75K Decreased by -19.00% | Mar 31, 26 |
| 11 | Balyasny Asset Management LLC | 297.16K (5.80%) | 71.75K Increased by +24.14% | Mar 31, 26 |
| 12 | Deerfield Management Co | 283.00K (5.52%) | 283.00K Increased by +100.00% | Mar 31, 26 |
| 13 | RA Capital Management, LLC | 265.00K (5.17%) | 265.00K Increased by +100.00% | Mar 31, 26 |
| 14 | Logos Global Management LP | 245.00K (4.78%) | 245.00K Increased by +100.00% | Dec 31, 24 |
| 15 | Great Point Partners LLC | 220.00K (4.29%) | 220.00K Increased by +100.00% | Mar 31, 26 |
| 16 | MPM Oncology Impact Management LP | 212.18K (4.14%) | -17.97K Decreased by -8.47% | Mar 31, 26 |
| 17 | Millennium Management LLC | 194.44K (3.79%) | 117.76K Increased by +60.56% | Dec 31, 25 |
| 18 | Ikarian Capital, LLC | 166.65K (3.25%) | 7.23K Increased by +4.34% | Mar 31, 26 |
| 19 | Wellington Management Company LLP | 136.68K (2.67%) | 122.99K Increased by +89.99% | Mar 31, 26 |
| 20 | Morgan Stanley - Brokerage Accounts | 132.76K (2.59%) | 642.00 Increased by +0.48% | Mar 31, 26 |
| Rank | Holder | SharesFloat % | Change | Date reported |
|---|---|---|---|---|
| 1 | iShares Russell 2000 ETF | 166.37K (3.25%) | 1.56K Increased by +0.94% | May 29, 26 |
| 2 | Janus Henderson Hrzn Biotec E2 USD | 146.89K (2.87%) | 0.00 Increased by 0.00% | Mar 31, 26 |
| 3 | Eventide Healthcare & Life Sciences I | 130.01K (2.54%) | 27.00K Increased by +20.77% | Mar 31, 26 |
| 4 | Heptagon Driehaus US Micro Cap Eq C$ Acc | 106.65K (2.08%) | 2.07K Increased by +1.94% | Apr 30, 26 |
| 5 | BlackRock Health Sciences Opps Inv A | 95.66K (1.87%) | 0.00 Increased by 0.00% | Apr 30, 26 |
| 6 | BGF World Healthscience A2 | 76.78K (1.50%) | 0.00 Increased by 0.00% | Feb 28, 26 |
| 7 | Fidelity Small Cap Index | 68.50K (1.34%) | 18.97K Increased by +27.69% | Mar 31, 26 |
| 8 | iShares Russell 2000 Growth ETF | 56.32K (1.10%) | -365.00 Decreased by -0.65% | May 29, 26 |
| 9 | Driehaus Micro Cap Growth USD | 42.01K (0.82%) | 0.00 Increased by 0.00% | Apr 30, 26 |
| 10 | State St Russell Sm/Mid Cp® Indx SL Cl I | 40.34K (0.79%) | 0.00 Increased by 0.00% | May 31, 26 |
| 11 | Biotech Growth Ord | 40.00K (0.78%) | 0.00 Increased by 0.00% | Feb 28, 26 |
| 12 | Vanguard Russell 2000 ETF | 35.23K (0.69%) | 890.00 Increased by +2.53% | Apr 30, 26 |
| 13 | Russell 2000 Equity Index Fund B | 32.01K (0.62%) | 4.32K Increased by +13.50% | Dec 31, 25 |
| 14 | BlackRock Health Sciences Term Trust | 31.93K (0.62%) | 16.44K Increased by +51.48% | Mar 31, 26 |
| 15 | Wellington CIF II SMID Cap Research | 25.65K (0.50%) | 24.31K Increased by +94.78% | Feb 28, 26 |
| 16 | State St Russell Sm Cap® Idx SL Cl I | 22.12K (0.43%) | 0.00 Increased by 0.00% | May 31, 26 |
| 17 | State St Russell Sm Cap® Indx SL Cl I | 22.12K (0.43%) | 0.00 Increased by 0.00% | Apr 30, 26 |
| 18 | Adara Smaller Companies | 20.24K (0.39%) | 0.00 Increased by 0.00% | Apr 30, 26 |
| 19 | AdvisorShares Psychedelics ETF | 19.38K (0.38%) | 0.00 Increased by 0.00% | May 29, 26 |
| 20 | Vanguard US Momentum Factor ETF | 19.18K (0.37%) | 7.73K Increased by +40.28% | Mar 31, 26 |