| Rank | Holder | SharesFloat % | Change | Date reported |
|---|---|---|---|---|
| 1 | Baker Bros Advisors LP | 11.05M (20.83%) | 0.00 Increased by 0.00% | Mar 31, 25 |
| 2 | T. Rowe Price Associates, Inc. | 10.85M (20.47%) | -109.05K Decreased by -1.00% | Mar 31, 25 |
| 3 | State Street Corporation | 6.49M (12.23%) | 1.38M Increased by +21.20% | Mar 31, 24 |
| 4 | BlackRock Inc | 6.06M (11.43%) | 495.50K Increased by +8.17% | Mar 31, 25 |
| 5 | Redmile Group, LLC | 4.91M (9.25%) | 124.34K Increased by +2.53% | Dec 31, 24 |
| 6 | FCPM III SERVICES BV | 3.91M (7.37%) | -60.97K Decreased by -1.56% | Mar 31, 25 |
| 7 | Vanguard Group Inc | 3.83M (7.23%) | 237.19K Increased by +6.19% | Mar 31, 25 |
| 8 | TANG CAPITAL MANAGEMENT LLC | 2.90M (5.47%) | 200.00K Increased by +6.90% | Mar 31, 25 |
| 9 | Marshall Wace Asset Management Ltd | 2.49M (4.69%) | 1.59M Increased by +63.98% | Mar 31, 25 |
| 10 | Sofinnova Ventures | 2.48M (4.68%) | -669.58K Decreased by -27.00% | Mar 31, 25 |
| 11 | State Street Corp | 2.40M (4.52%) | 194.00K Increased by +8.09% | Mar 31, 25 |
| 12 | HHG PLC | 2.17M (4.09%) | 2.15M Increased by +99.17% | Sep 30, 23 |
| 13 | Bvf Inc | 2.14M (4.04%) | 0.00 Increased by 0.00% | Sep 30, 23 |
| 14 | RTW INVESTMENTS, LLC | 2.07M (3.89%) | 0.00 Increased by 0.00% | Mar 31, 25 |
| 15 | Omega Fund Management LLC | 1.98M (3.72%) | 0.00 Increased by 0.00% | Mar 31, 25 |
| 16 | Boxer Capital Management, LLC | 1.80M (3.39%) | 0.00 Increased by 0.00% | Mar 31, 25 |
| 17 | Geode Capital Management, LLC | 1.67M (3.15%) | 243.10K Increased by +14.53% | Mar 31, 25 |
| 18 | Boxer Capital LLC | 1.54M (2.90%) | 0.00 Increased by 0.00% | Sep 30, 24 |
| 19 | BRAIDWELL LP | 1.46M (2.76%) | -15.28K Decreased by -1.04% | Mar 31, 25 |
| 20 | Camber Capital Management LLC | 1.35M (2.55%) | -1.40M Decreased by -103.70% | Jun 30, 24 |
| Rank | Holder | SharesFloat % | Change | Date reported |
|---|---|---|---|---|
| 1 | T. Rowe Price New Horizons | 4.67M (8.80%) | -63.09K Decreased by -1.35% | Mar 31, 25 |
| 2 | US Small-Cap Growth II Equity Comp | 4.67M (8.80%) | -64.46K Decreased by -1.38% | Mar 31, 25 |
| 3 | Vanguard Total Stock Mkt Idx Inv | 2.05M (3.87%) | 63.40K Increased by +3.09% | Apr 30, 25 |
| 4 | Vanguard US Total Market Shares ETF | 2.02M (3.82%) | 478.00K Increased by +23.62% | Sep 30, 24 |
| 5 | iShares Russell 2000 ETF | 1.70M (3.21%) | 288.00 Increased by +0.02% | Apr 30, 25 |
| 6 | T. Rowe Price Health Sciences | 1.67M (3.15%) | -25.24K Decreased by -1.51% | Mar 31, 25 |
| 7 | T. Rowe Price Integrated US Sm Gr Eq | 1.48M (2.79%) | 0.00 Increased by 0.00% | Mar 31, 25 |
| 8 | T. Rowe Price Integrated US SmCapGrEq | 1.48M (2.79%) | -1.48M Decreased by -100.00% | Mar 31, 25 |
| 9 | T. Rowe Price New Horizons Tr-A | 1.28M (2.41%) | 1.80K Increased by +0.14% | Mar 31, 25 |
| 10 | T. Rowe Price New Horizons Tr-Z | 1.28M (2.41%) | 1.80K Increased by +0.14% | Mar 31, 25 |
| 11 | Vanguard Institutional Extnd Mkt Idx Tr | 1.06M (2.00%) | 1.92K Increased by +0.18% | Apr 30, 25 |
| 12 | SPDR® S&P Biotech ETF | 939.68K (1.77%) | -13.75K Decreased by -1.46% | Apr 30, 25 |
| 13 | Fidelity® Select Biotechnology | 825.12K (1.56%) | -31.60K Decreased by -3.83% | Nov 30, 23 |
| 14 | iShares Russell 2000 Value ETF | 649.91K (1.23%) | -2.21K Decreased by -0.34% | Apr 30, 25 |
| 15 | Janus Henderson Global Life Sciences | 638.89K (1.20%) | 638.89K Increased by +100.00% | Sep 30, 23 |
| 16 | Janus Henderson Global Life Sciences D | 638.89K (1.20%) | 638.89K Increased by +100.00% | Sep 30, 23 |
| 17 | Candriam Global Equities Oncology | 612.16K (1.15%) | 0.00 Increased by 0.00% | Sep 30, 23 |
| 18 | Fidelity Small Cap Index | 606.58K (1.14%) | 0.00 Increased by 0.00% | Feb 28, 25 |
| 19 | Nuveen Quant Small Cap Equity R6 | 521.99K (0.98%) | 0.00 Increased by 0.00% | Mar 31, 25 |
| 20 | Direxion Daily S&P Biotech Bull 3X ETF | 501.66K (0.95%) | 3.54K Increased by +0.71% | Apr 30, 24 |