| Rank | Holder | SharesFloat % | Change | Date reported |
|---|---|---|---|---|
| 1 | FMR Inc | 12.22M (18.20%) | 341.07K Increased by +2.79% | Mar 31, 25 |
| 2 | BlackRock Inc | 5.71M (8.50%) | -50.47K Decreased by -0.88% | Mar 31, 25 |
| 3 | Deep Track Capital, LP | 5.38M (8.01%) | 857.71K Increased by +15.94% | Mar 31, 25 |
| 4 | Kynam Capital Management, LP | 4.70M (7.00%) | 1.37M Increased by +29.23% | Mar 31, 25 |
| 5 | Vanguard Group Inc | 4.56M (6.79%) | -31.95K Decreased by -0.70% | Mar 31, 25 |
| 6 | State Street Corporation | 4.49M (6.68%) | 1.78M Increased by +39.66% | Mar 31, 24 |
| 7 | VR Adviser, LLC | 3.88M (5.78%) | 0.00 Increased by 0.00% | Mar 31, 25 |
| 8 | COMMODORE CAPITAL LP | 3.60M (5.36%) | 1.20M Increased by +33.33% | Mar 31, 25 |
| 9 | Fairmount Funds Management LLC | 3.45M (5.13%) | 0.00 Increased by 0.00% | Mar 31, 25 |
| 10 | State Street Corp | 2.87M (4.27%) | -657.07K Decreased by -22.93% | Mar 31, 25 |
| 11 | TANG CAPITAL MANAGEMENT LLC | 2.79M (4.16%) | 300.00K Increased by +10.74% | Mar 31, 25 |
| 12 | Novo A/S | 2.25M (3.35%) | 300.00 Increased by +0.01% | Mar 31, 25 |
| 13 | Paradigm Biocapital Advisors LP | 2.10M (3.12%) | 275.00K Increased by +13.13% | Mar 31, 25 |
| 14 | Maverick Capital Ltd | 2.06M (3.07%) | 7.37K Increased by +0.36% | Mar 31, 25 |
| 15 | AllianceBernstein L.P. | 2.02M (3.01%) | -265.38K Decreased by -13.13% | Mar 31, 25 |
| 16 | RA Capital Management, LLC | 2.01M (2.99%) | 0.00 Increased by 0.00% | Sep 30, 23 |
| 17 | EcoR1 Capital, LLC | 1.96M (2.92%) | 1.96M Increased by +100.00% | Sep 30, 24 |
| 18 | BRAIDWELL LP | 1.74M (2.58%) | 528.88K Increased by +30.48% | Sep 30, 23 |
| 19 | Geode Capital Management, LLC | 1.72M (2.56%) | 61.55K Increased by +3.58% | Mar 31, 25 |
| 20 | T. Rowe Price Associates, Inc. | 1.69M (2.51%) | 361.32K Increased by +21.40% | Mar 31, 25 |
| Rank | Holder | SharesFloat % | Change | Date reported |
|---|---|---|---|---|
| 1 | Fidelity Select Health Care | 2.58M (3.84%) | 146.53K Increased by +5.67% | Apr 30, 25 |
| 2 | Vanguard Total Stock Mkt Idx Inv | 2.29M (3.40%) | 23.60K Increased by +1.03% | May 31, 25 |
| 3 | Vanguard US Total Market Shares ETF | 2.24M (3.34%) | 324.50K Increased by +14.47% | Sep 30, 24 |
| 4 | iShares Russell 2000 ETF | 1.86M (2.78%) | 0.00 Increased by 0.00% | May 31, 25 |
| 5 | Fidelity Advisor Biotechnology I | 1.74M (2.58%) | 29.00K Increased by +1.67% | Apr 30, 25 |
| 6 | Fidelity Advisor Health Care I | 1.52M (2.27%) | 81.40K Increased by +5.34% | Apr 30, 25 |
| 7 | SPDR® S&P Biotech ETF | 1.22M (1.81%) | 7.21K Increased by +0.59% | May 31, 25 |
| 8 | Fidelity Advisor® Biotechnology I | 1.21M (1.80%) | 0.00 Increased by 0.00% | Nov 30, 23 |
| 9 | Vanguard Institutional Extnd Mkt Idx Tr | 1.08M (1.60%) | 8.69K Increased by +0.81% | May 31, 25 |
| 10 | Fidelity Small Cap Growth | 1.05M (1.57%) | 0.00 Increased by 0.00% | Mar 31, 25 |
| 11 | FIAM Small Cap Core CIT Cl B | 1.01M (1.50%) | 0.00 Increased by 0.00% | Mar 31, 25 |
| 12 | FIAM Small Cap Core Composite | 1.01M (1.50%) | 0.00 Increased by 0.00% | Dec 31, 24 |
| 13 | T. Rowe Price New Horizons | 972.51K (1.45%) | -13.15K Decreased by -1.35% | Mar 31, 25 |
| 14 | US Small-Cap Growth II Equity Comp | 972.51K (1.45%) | 351.69K Increased by +36.16% | Mar 31, 25 |
| 15 | AB Small Cap Growth A | 907.17K (1.35%) | -25.54K Decreased by -2.82% | Apr 30, 25 |
| 16 | Fidelity Select Biotechnology | 838.73K (1.25%) | -112.50K Decreased by -13.41% | Apr 30, 25 |
| 17 | Loomis Sayles Small Cap Growth Instl | 775.63K (1.15%) | -21.17K Decreased by -2.73% | Apr 30, 25 |
| 18 | Polar Capital Biotech S Inc | 750.00K (1.12%) | 0.00 Increased by 0.00% | Aug 31, 24 |
| 19 | Fidelity Small Cap Index | 744.93K (1.11%) | 19.82K Increased by +2.66% | Mar 31, 25 |
| 20 | Candriam Eqs L Biotech C USD Cap | 703.31K (1.05%) | -5.67K Decreased by -0.81% | Apr 30, 25 |