| Rank | Holder | SharesFloat % | Change | Date reported |
|---|---|---|---|---|
| 1 | EcoR1 Capital, LLC | 11.58M (28.89%) | 0.00 Increased by 0.00% | Mar 31, 25 |
| 2 | FMR Inc | 7.94M (19.81%) | -129.91K Decreased by -1.64% | Mar 31, 25 |
| 3 | Wellington Management Company LLP | 5.20M (12.97%) | 68.65K Increased by +1.32% | Mar 31, 25 |
| 4 | BlackRock Inc | 4.04M (10.08%) | -80.08K Decreased by -1.98% | Mar 31, 25 |
| 5 | State Street Corporation | 3.47M (8.67%) | 715.43K Increased by +20.59% | Mar 31, 24 |
| 6 | T. Rowe Price Associates, Inc. | 3.46M (8.62%) | -229.85K Decreased by -6.65% | Mar 31, 25 |
| 7 | Armistice Capital, LLC | 2.20M (5.48%) | -40.00K Decreased by -1.82% | Mar 31, 25 |
| 8 | Palo Alto Investors, LLC | 1.66M (4.14%) | -78.23K Decreased by -4.71% | Mar 31, 25 |
| 9 | State Street Corp | 1.52M (3.79%) | -340.28K Decreased by -22.37% | Mar 31, 25 |
| 10 | Siren, L.L.C. | 1.28M (3.20%) | 183.72K Increased by +14.31% | Mar 31, 25 |
| 11 | Vanguard Group Inc | 1.27M (3.17%) | -134.57K Decreased by -10.60% | Mar 31, 25 |
| 12 | HHG PLC | 1.03M (2.56%) | -283.03K Decreased by -27.57% | Jun 30, 24 |
| 13 | Geode Capital Management, LLC | 1.01M (2.53%) | 50.48K Increased by +4.97% | Mar 31, 25 |
| 14 | Artal Group S A | 1.00M (2.50%) | 0.00 Increased by 0.00% | Jun 30, 24 |
| 15 | Dimensional Fund Advisors, Inc. | 863.15K (2.15%) | -1.69K Decreased by -0.20% | Mar 31, 25 |
| 16 | T. Rowe Price Investment Management,Inc. | 853.48K (2.13%) | -22.69K Decreased by -2.66% | Sep 30, 23 |
| 17 | Partner Fund Management LP | 836.57K (2.09%) | 62.02K Increased by +7.41% | Sep 30, 23 |
| 18 | Morgan Stanley - Brokerage Accounts | 719.99K (1.80%) | 498.00 Increased by +0.07% | Mar 31, 25 |
| 19 | Boxer Capital LLC | 690.00K (1.72%) | 0.00 Increased by 0.00% | Sep 30, 24 |
| 20 | Boxer Capital Management, LLC | 690.00K (1.72%) | 0.00 Increased by 0.00% | Mar 31, 25 |
| Rank | Holder | SharesFloat % | Change | Date reported |
|---|---|---|---|---|
| 1 | Vanguard Health Care Inv | 4.18M (10.44%) | -39.90K Decreased by -0.95% | Mar 31, 25 |
| 2 | Fidelity Growth Compy Commingled Pl S | 3.38M (8.43%) | 3.55K Increased by +0.10% | Jun 30, 25 |
| 3 | Fidelity Growth Compy Commingled Pl O | 3.27M (8.17%) | 23.65K Increased by +0.72% | Jun 30, 24 |
| 4 | Fidelity Growth Company Fund | 2.32M (5.80%) | 0.00 Increased by 0.00% | Jun 30, 25 |
| 5 | Fidelity® Growth Company | 2.32M (5.79%) | 66.70K Increased by +2.87% | Nov 30, 23 |
| 6 | T. Rowe Price New Horizons | 1.64M (4.09%) | -251.35K Decreased by -15.34% | Mar 31, 25 |
| 7 | US Small-Cap Growth II Equity Comp | 1.64M (4.09%) | -251.90K Decreased by -15.38% | Mar 31, 25 |
| 8 | iShares Russell 2000 ETF | 927.95K (2.31%) | -17.64K Decreased by -1.90% | Jul 31, 25 |
| 9 | Fidelity® Growth Company K6 | 861.53K (2.15%) | 6.29K Increased by +0.73% | Nov 30, 23 |
| 10 | Fidelity® Select Biotechnology | 801.42K (2.00%) | -22.10K Decreased by -2.76% | Nov 30, 23 |
| 11 | Fidelity Growth Company K6 | 793.58K (1.98%) | -3.55K Decreased by -0.45% | Jun 30, 25 |
| 12 | Federated Hermes MDT SCC Institutional | 784.12K (1.96%) | 404.94K Increased by +51.64% | Jun 30, 25 |
| 13 | Federated Hermes MDT Small Cap Core IS | 784.12K (1.96%) | 404.94K Increased by +51.64% | Jun 30, 25 |
| 14 | Vanguard Explorer Inv | 759.13K (1.89%) | 539.88K Increased by +71.12% | Jun 30, 25 |
| 15 | Fidelity Series Growth Company | 758.90K (1.89%) | 0.00 Increased by 0.00% | Jun 30, 25 |
| 16 | Fidelity® Series Growth Company | 741.71K (1.85%) | 0.00 Increased by 0.00% | Nov 30, 23 |
| 17 | Fidelity Select Biotechnology | 643.92K (1.61%) | 0.00 Increased by 0.00% | Jun 30, 25 |
| 18 | Vanguard Institutional Extnd Mkt Idx Tr | 605.38K (1.51%) | 0.00 Increased by 0.00% | Jun 30, 25 |
| 19 | Candriam Eqs L Biotech C USD Cap | 571.82K (1.43%) | 0.00 Increased by 0.00% | Jun 30, 25 |
| 20 | SPDR® S&P Biotech ETF | 506.03K (1.26%) | 3.00K Increased by +0.59% | May 31, 25 |