| Rank | Holder | SharesFloat % | Change | Date reported |
|---|---|---|---|---|
| 1 | Perceptive Advisors LLC | 6.56M (1.19%) | 171.23K Increased by +2.61% | Mar 31, 25 |
| 2 | HHG PLC | 5.52M (1.00%) | 3.85M Increased by +69.78% | Mar 31, 25 |
| 3 | Darwin Global Management, Ltd. | 3.92M (0.71%) | 3.11M Increased by +79.34% | Mar 31, 25 |
| 4 | Deep Track Capital, LP | 3.18M (0.58%) | -819.98K Decreased by -25.79% | Sep 30, 24 |
| 5 | Eventide Asset Management, LLC | 2.89M (0.53%) | -238.69K Decreased by -8.25% | Mar 31, 25 |
| 6 | Orbimed Advisors, LLC | 2.86M (0.52%) | -536.27K Decreased by -18.74% | Jun 30, 24 |
| 7 | RTW INVESTMENTS, LLC | 2.85M (0.52%) | 1.03M Increased by +36.08% | Mar 31, 25 |
| 8 | NEA Management Company, LLC | 2.69M (0.49%) | -2.90M Decreased by -107.72% | Mar 31, 25 |
| 9 | The Carlyle Group Inc | 2.46M (0.45%) | 0.00 Increased by 0.00% | Jun 30, 24 |
| 10 | SUMMIT PARTNERS PUBLIC ASSET MANAGEMENT, LLC | 2.32M (0.42%) | 421.09K Increased by +18.13% | Mar 31, 25 |
| 11 | Wellington Management Company LLP | 2.13M (0.39%) | -893.74K Decreased by -41.93% | Mar 31, 25 |
| 12 | T. Rowe Price Associates, Inc. | 1.87M (0.34%) | 32.75K Increased by +1.75% | Mar 31, 25 |
| 13 | Octagon Capital Advisors LP | 1.84M (0.33%) | -60.00K Decreased by -3.27% | Sep 30, 24 |
| 14 | Maverick Capital Ltd | 1.78M (0.32%) | -1.35M Decreased by -75.41% | Mar 31, 25 |
| 15 | RA Capital Management, LLC | 1.77M (0.32%) | -3.24M Decreased by -183.54% | Dec 31, 24 |
| 16 | FMR Inc | 1.73M (0.31%) | -3.17M Decreased by -183.15% | Mar 31, 24 |
| 17 | Adage Capital Partners Gp LLC | 1.63M (0.30%) | 1.29M Increased by +79.25% | Mar 31, 25 |
| 18 | Morgan Stanley - Brokerage Accounts | 1.62M (0.29%) | 140.37K Increased by +8.64% | Mar 31, 25 |
| 19 | Hood River Capital Management LLC | 1.53M (0.28%) | 47.09K Increased by +3.07% | Mar 31, 25 |
| 20 | Vivo Capital, LLC | 1.44M (0.26%) | -845.19K Decreased by -58.74% | Mar 31, 25 |
| Rank | Holder | SharesFloat % | Change | Date reported |
|---|---|---|---|---|
| 1 | Eventide Gilead N | 1.89M (0.34%) | 0.00 Increased by 0.00% | Mar 31, 25 |
| 2 | T. Rowe Price Health Sciences | 1.37M (0.25%) | -142.36K Decreased by -10.41% | Mar 31, 25 |
| 3 | Fidelity® Select Biotechnology | 1.34M (0.24%) | -117.00K Decreased by -8.73% | Nov 30, 23 |
| 4 | Vanguard Health Care Inv | 1.16M (0.21%) | 0.00 Increased by 0.00% | Mar 31, 24 |
| 5 | Bellevue Healthcare Ord | 1.10M (0.20%) | 1.10M Increased by +100.00% | Jul 31, 24 |
| 6 | Eventide Healthcare & Life Sciences I | 988.17K (0.18%) | -241.83K Decreased by -24.47% | Mar 31, 25 |
| 7 | Janus Henderson Global Life Sciences D | 952.49K (0.17%) | 190.90K Increased by +20.04% | Apr 30, 25 |
| 8 | Hood River Small-Cap Growth Instl | 838.91K (0.15%) | 0.00 Increased by 0.00% | Mar 31, 25 |
| 9 | Federated Hermes Kaufmann Small Cap A | 777.40K (0.14%) | -161.10K Decreased by -20.72% | Mar 31, 25 |
| 10 | Federated Hermes Kaufmann Small Cap Grow | 777.40K (0.14%) | -161.10K Decreased by -20.72% | Mar 31, 25 |
| 11 | Janus Henderson Glb Life Scn I2 USD | 766.18K (0.14%) | 146.41K Increased by +19.11% | Apr 30, 25 |
| 12 | Janus Henderson Global Life Sciences | 761.59K (0.14%) | 761.59K Increased by +100.00% | Mar 31, 25 |
| 13 | Polar Capital Biotech S Inc | 750.00K (0.14%) | 750.00K Increased by +100.00% | Apr 30, 25 |
| 14 | Putnam Small Cap Growth A | 738.10K (0.13%) | -15.30K Decreased by -2.07% | May 31, 25 |
| 15 | Putnam US Small Cap Growth Equity | 737.00K (0.13%) | 119.60K Increased by +16.23% | Mar 31, 25 |
| 16 | Putnam US Small Cap Growth Managed Acct | 737.00K (0.13%) | 119.60K Increased by +16.23% | Mar 31, 25 |
| 17 | Fidelity Select Biotechnology | 716.59K (0.13%) | 0.00 Increased by 0.00% | Sep 30, 24 |
| 18 | SEB Läkemedelsfond | 681.92K (0.12%) | 0.00 Increased by 0.00% | May 31, 25 |
| 19 | Fidelity® Small Cap Growth | 662.99K (0.12%) | -805.00 Decreased by -0.12% | Oct 31, 23 |
| 20 | Fidelity Small Cap Growth | 662.19K (0.12%) | -799.00 Decreased by -0.12% | Jan 31, 24 |