| Rank | Holder | SharesFloat % | Change | Date reported |
|---|---|---|---|---|
| 1 | Baker Bros Advisors LP | 11.05M (18.93%) | 0.00 Increased by 0.00% | Mar 31, 26 |
| 2 | T. Rowe Price Associates, Inc. | 8.12M (13.92%) | -140.86K Decreased by -1.73% | Mar 31, 26 |
| 3 | RTW INVESTMENTS, LLC | 7.36M (12.61%) | 216.56K Increased by +2.94% | Mar 31, 26 |
| 4 | State Street Corporation | 6.49M (11.12%) | 1.38M Increased by +21.20% | Mar 31, 24 |
| 5 | BlackRock Inc | 6.24M (10.69%) | 169.61K Increased by +2.72% | Mar 31, 26 |
| 6 | Suvretta Capital Management, LLC | 4.22M (7.24%) | 4.19M Increased by +99.15% | Mar 31, 26 |
| 7 | State Street Corp | 3.78M (6.48%) | 89.13K Increased by +2.36% | Mar 31, 26 |
| 8 | Vanguard Group Inc | 3.78M (6.47%) | 296.80K Increased by +7.86% | Dec 31, 25 |
| 9 | Point72 Asset Management, L.P. | 3.63M (6.22%) | 2.92M Increased by +80.37% | Sep 30, 25 |
| 10 | TANG CAPITAL MANAGEMENT LLC | 3.40M (5.83%) | 200.00K Increased by +5.88% | Sep 30, 25 |
| 11 | FCPM III SERVICES BV | 2.81M (4.81%) | 0.00 Increased by 0.00% | Mar 31, 26 |
| 12 | Vanguard Capital Management, LLC | 2.76M (4.73%) | 2.76M Increased by +100.00% | Mar 31, 26 |
| 13 | Readystate Asset Management LP | 2.62M (4.49%) | 2.43M Increased by +92.84% | Sep 30, 25 |
| 14 | D. E. Shaw & Co LP | 2.34M (4.01%) | -238.51K Decreased by -10.21% | Mar 31, 26 |
| 15 | The Goldman Sachs Group Inc | 2.28M (3.90%) | 1.62M Increased by +71.10% | Mar 31, 26 |
| 16 | HHG PLC | 2.17M (3.71%) | 2.15M Increased by +99.17% | Sep 30, 23 |
| 17 | Bvf Inc | 2.14M (3.67%) | 0.00 Increased by 0.00% | Sep 30, 23 |
| 18 | Erste Asset Management GmbH | 2.12M (3.63%) | 0.00 Increased by 0.00% | Mar 31, 26 |
| 19 | FMR Inc | 2.05M (3.51%) | -936.09K Decreased by -45.76% | Mar 31, 26 |
| 20 | Omega Fund Management LLC | 1.98M (3.39%) | 0.00 Increased by 0.00% | Jun 30, 25 |
| Rank | Holder | SharesFloat % | Change | Date reported |
|---|---|---|---|---|
| 1 | State Street® SPDR® S&P® Biotech ETF | 2.45M (4.20%) | 20.22K Increased by +0.82% | May 29, 26 |
| 2 | T. Rowe Price New Horizons | 2.41M (4.14%) | -20.89K Decreased by -0.87% | Mar 31, 26 |
| 3 | US Small-Cap Growth II Equity Comp | 2.41M (4.14%) | -23.38K Decreased by -0.97% | Mar 31, 26 |
| 4 | Vanguard US Total Market Shares ETF | 2.02M (3.47%) | 478.00K Increased by +23.62% | Sep 30, 24 |
| 5 | Vanguard Total Stock Mkt Idx Inv | 1.85M (3.17%) | 0.00 Increased by 0.00% | Apr 30, 26 |
| 6 | iShares Russell 2000 ETF | 1.68M (2.88%) | 15.55K Increased by +0.93% | May 29, 26 |
| 7 | T. Rowe Price Integrated US Sm Gr Eq | 1.60M (2.74%) | 0.00 Increased by 0.00% | Mar 31, 26 |
| 8 | T. Rowe Price Integrated US SmCapGrEq | 1.60M (2.74%) | 0.00 Increased by 0.00% | Mar 31, 26 |
| 9 | Fidelity Select Biotechnology | 1.51M (2.60%) | 0.00 Increased by 0.00% | Apr 30, 26 |
| 10 | T. Rowe Price Health Sciences | 1.43M (2.45%) | -67.74K Decreased by -4.74% | Mar 31, 26 |
| 11 | T. Rowe Price New Horizons Tr-Z | 1.28M (2.19%) | 1.80K Increased by +0.14% | Mar 31, 25 |
| 12 | T. Rowe Price New Horizons Tr-A | 1.03M (1.77%) | 2.49K Increased by +0.24% | Mar 31, 26 |
| 13 | SPDR® S&P Biotech ETF | 968.96K (1.66%) | 2.17K Increased by +0.22% | Aug 31, 25 |
| 14 | BlackRock Advantage Small Cap Core Instl | 870.06K (1.49%) | 746.75K Increased by +85.83% | Apr 30, 26 |
| 15 | Vanguard Institutional Extnd Mkt Idx Tr | 853.55K (1.46%) | 4.29K Increased by +0.50% | Apr 30, 26 |
| 16 | Fidelity® Select Biotechnology | 825.12K (1.41%) | -31.60K Decreased by -3.83% | Nov 30, 23 |
| 17 | Fidelity Small Cap Index | 701.85K (1.20%) | 24.86K Increased by +3.54% | Mar 31, 26 |
| 18 | Janus Henderson Global Life Sciences | 638.89K (1.10%) | 638.89K Increased by +100.00% | Sep 30, 23 |
| 19 | Janus Henderson Global Life Sciences D | 638.89K (1.10%) | 638.89K Increased by +100.00% | Sep 30, 23 |
| 20 | Candriam Global Equities Oncology | 612.16K (1.05%) | 0.00 Increased by 0.00% | Sep 30, 23 |