| Rank | Holder | SharesFloat % | Change | Date reported |
|---|---|---|---|---|
| 1 | Perceptive Advisors LLC | 6.56M (1.29%) | 171.23K Increased by +2.61% | Mar 31, 25 |
| 2 | HHG PLC | 5.52M (1.09%) | 3.85M Increased by +69.78% | Mar 31, 25 |
| 3 | Darwin Global Management, Ltd. | 3.92M (0.77%) | 3.11M Increased by +79.34% | Mar 31, 25 |
| 4 | Deep Track Capital, LP | 3.18M (0.63%) | -819.98K Decreased by -25.79% | Sep 30, 24 |
| 5 | Eventide Asset Management, LLC | 2.89M (0.57%) | -238.69K Decreased by -8.25% | Mar 31, 25 |
| 6 | Orbimed Advisors, LLC | 2.86M (0.56%) | -536.27K Decreased by -18.74% | Jun 30, 24 |
| 7 | RTW INVESTMENTS, LLC | 2.85M (0.56%) | 1.03M Increased by +36.08% | Mar 31, 25 |
| 8 | NEA Management Company, LLC | 2.69M (0.53%) | -2.90M Decreased by -107.72% | Mar 31, 25 |
| 9 | The Carlyle Group Inc | 2.46M (0.48%) | 0.00 Increased by 0.00% | Jun 30, 24 |
| 10 | SUMMIT PARTNERS PUBLIC ASSET MANAGEMENT, LLC | 2.32M (0.46%) | 421.09K Increased by +18.13% | Mar 31, 25 |
| 11 | Wellington Management Company LLP | 2.13M (0.42%) | -893.74K Decreased by -41.93% | Mar 31, 25 |
| 12 | T. Rowe Price Associates, Inc. | 1.87M (0.37%) | 32.75K Increased by +1.75% | Mar 31, 25 |
| 13 | Octagon Capital Advisors LP | 1.84M (0.36%) | -60.00K Decreased by -3.27% | Sep 30, 24 |
| 14 | Maverick Capital Ltd | 1.78M (0.35%) | -1.35M Decreased by -75.41% | Mar 31, 25 |
| 15 | RA Capital Management, LLC | 1.77M (0.35%) | -3.24M Decreased by -183.54% | Dec 31, 24 |
| 16 | FMR Inc | 1.73M (0.34%) | -3.17M Decreased by -183.15% | Mar 31, 24 |
| 17 | Adage Capital Partners Gp LLC | 1.63M (0.32%) | 1.29M Increased by +79.25% | Mar 31, 25 |
| 18 | Morgan Stanley - Brokerage Accounts | 1.62M (0.32%) | 140.37K Increased by +8.64% | Mar 31, 25 |
| 19 | Hood River Capital Management LLC | 1.53M (0.30%) | 47.09K Increased by +3.07% | Mar 31, 25 |
| 20 | Vivo Capital, LLC | 1.44M (0.28%) | -845.19K Decreased by -58.74% | Mar 31, 25 |
| Rank | Holder | SharesFloat % | Change | Date reported |
|---|---|---|---|---|
| 1 | Eventide Gilead N | 1.89M (0.37%) | 0.00 Increased by 0.00% | Mar 31, 25 |
| 2 | T. Rowe Price Health Sciences | 1.36M (0.27%) | -8.06K Decreased by -0.59% | Jun 30, 25 |
| 3 | Fidelity® Select Biotechnology | 1.34M (0.26%) | -117.00K Decreased by -8.73% | Nov 30, 23 |
| 4 | Vanguard Health Care Inv | 1.16M (0.23%) | 0.00 Increased by 0.00% | Mar 31, 24 |
| 5 | Bellevue Healthcare Ord | 1.10M (0.22%) | 1.10M Increased by +100.00% | Jul 31, 24 |
| 6 | Janus Henderson Global Life Sciences D | 1.02M (0.20%) | 69.05K Increased by +6.76% | May 31, 25 |
| 7 | Eventide Healthcare & Life Sciences I | 988.17K (0.19%) | -241.83K Decreased by -24.47% | Mar 31, 25 |
| 8 | Janus Henderson Global Life Sciences | 928.45K (0.18%) | 166.86K Increased by +17.97% | Jun 30, 25 |
| 9 | Polar Capital Biotech S Inc | 875.00K (0.17%) | 0.00 Increased by 0.00% | Jun 30, 25 |
| 10 | Hood River Small-Cap Growth Instl | 838.91K (0.17%) | 0.00 Increased by 0.00% | Mar 31, 25 |
| 11 | Federated Hermes Kaufmann Small Cap Grow | 777.40K (0.15%) | -161.10K Decreased by -20.72% | Mar 31, 25 |
| 12 | Janus Henderson Glb Life Scn I2 USD | 769.69K (0.15%) | -58.88K Decreased by -7.65% | Jun 30, 25 |
| 13 | Putnam Small Cap Growth A | 734.13K (0.14%) | -3.97K Decreased by -0.54% | Jun 30, 25 |
| 14 | Putnam US Small Cap Growth Equity | 734.13K (0.14%) | -2.87K Decreased by -0.39% | Jun 30, 25 |
| 15 | Putnam US Small Cap Growth Managed Acct | 734.13K (0.14%) | -2.87K Decreased by -0.39% | Jun 30, 25 |
| 16 | Fidelity Select Biotechnology | 716.59K (0.14%) | 0.00 Increased by 0.00% | Sep 30, 24 |
| 17 | SEB Läkemedelsfond | 681.92K (0.13%) | 0.00 Increased by 0.00% | Jun 30, 25 |
| 18 | Fidelity® Small Cap Growth | 662.99K (0.13%) | -805.00 Decreased by -0.12% | Oct 31, 23 |
| 19 | Fidelity Small Cap Growth | 662.19K (0.13%) | -799.00 Decreased by -0.12% | Jan 31, 24 |
| 20 | Federated Hermes Kaufmann Small Cap A | 656.00K (0.13%) | -121.40K Decreased by -18.51% | Jun 30, 25 |