| Rank | Holder | SharesFloat % | Change | Date reported |
|---|---|---|---|---|
| 1 | RTW INVESTMENTS, LLC | 5.62M (12.02%) | 76.67K Increased by +1.36% | Mar 31, 26 |
| 2 | BlackRock Inc | 5.39M (11.52%) | 173.16K Increased by +3.22% | Mar 31, 26 |
| 3 | FMR Inc | 5.38M (11.51%) | -217.25K Decreased by -4.04% | Mar 31, 26 |
| 4 | Lynx1 Capital Management, LP | 4.76M (10.19%) | -641.00K Decreased by -13.46% | Mar 31, 26 |
| 5 | Redmile Group, LLC | 4.16M (8.90%) | 130.05K Increased by +3.12% | Mar 31, 26 |
| 6 | Morgan Stanley - Brokerage Accounts | 3.42M (7.32%) | -122.88K Decreased by -3.59% | Mar 31, 26 |
| 7 | Baker Bros Advisors LP | 3.34M (7.13%) | 0.00 Increased by 0.00% | Mar 31, 26 |
| 8 | COWEN AND COMPANY, LLC | 3.24M (6.94%) | -121.25K Decreased by -3.74% | Sep 30, 24 |
| 9 | The Toronto-Dominion Bank | 3.17M (6.79%) | 0.00 Increased by 0.00% | Mar 31, 26 |
| 10 | Vanguard Group Inc | 3.15M (6.73%) | -14.63K Decreased by -0.46% | Dec 31, 25 |
| 11 | Wellington Management Company LLP | 3.10M (6.62%) | 2.36M Increased by +76.23% | Mar 31, 26 |
| 12 | Bvf Inc | 2.55M (5.45%) | 281.88K Increased by +11.06% | Mar 31, 26 |
| 13 | Vanguard Capital Management, LLC | 2.36M (5.04%) | 2.36M Increased by +100.00% | Mar 31, 26 |
| 14 | Marshall Wace Asset Management Ltd | 2.30M (4.92%) | 168.77K Increased by +7.34% | Jun 30, 25 |
| 15 | State Street Corp | 2.28M (4.87%) | -221.54K Decreased by -9.73% | Mar 31, 26 |
| 16 | Skorpios Trust | 2.26M (4.82%) | -1.00M Decreased by -44.32% | Sep 30, 25 |
| 17 | Logos Global Management LP | 2.10M (4.49%) | 2.10M Increased by +100.00% | Jun 30, 24 |
| 18 | Siren, L.L.C. | 2.00M (4.27%) | -252.00K Decreased by -12.63% | Mar 31, 26 |
| 19 | T. Rowe Price Associates, Inc. | 1.93M (4.14%) | 1.56M Increased by +80.75% | Mar 31, 26 |
| 20 | Deerfield Management Co | 1.82M (3.90%) | 0.00 Increased by 0.00% | Mar 31, 26 |
| Rank | Holder | SharesFloat % | Change | Date reported |
|---|---|---|---|---|
| 1 | Vanguard Total Stock Mkt Idx Inv | 1.73M (3.70%) | 5.96K Increased by +0.34% | Apr 30, 26 |
| 2 | Vanguard Health Care Inv | 1.65M (3.53%) | 1.65M Increased by +100.00% | Mar 31, 26 |
| 3 | Vanguard US Total Market Shares ETF | 1.61M (3.44%) | 0.00 Increased by 0.00% | Sep 30, 24 |
| 4 | State Street® SPDR® S&P® Biotech ETF | 1.25M (2.66%) | -7.67K Decreased by -0.62% | May 31, 26 |
| 5 | Fidelity Select Biotechnology | 1.22M (2.61%) | 14.00K Increased by +1.15% | Apr 30, 26 |
| 6 | iShares Russell 2000 ETF | 1.17M (2.50%) | 10.76K Increased by +0.92% | May 29, 26 |
| 7 | Polar Capital Biotech S Inc | 1.07M (2.29%) | 0.00 Increased by 0.00% | Apr 30, 26 |
| 8 | BGF World Healthscience A2 USD | 851.11K (1.82%) | 0.00 Increased by 0.00% | Feb 28, 25 |
| 9 | Fidelity Select Health Care | 628.00K (1.34%) | -52.00K Decreased by -8.28% | Apr 30, 26 |
| 10 | SPDR® S&P Biotech ETF | 626.96K (1.34%) | 1.40K Increased by +0.22% | Aug 31, 25 |
| 11 | Vanguard Institutional Extnd Mkt Idx Tr | 579.50K (1.24%) | 4.96K Increased by +0.86% | Apr 30, 26 |
| 12 | Fidelity Stock Selector Small Cap | 562.90K (1.20%) | 0.00 Increased by 0.00% | Mar 31, 26 |
| 13 | T. Rowe Price New Horizons | 541.30K (1.16%) | 58.06K Increased by +10.73% | Apr 30, 26 |
| 14 | Fidelity Small Cap Growth | 520.83K (1.11%) | 0.00 Increased by 0.00% | Mar 31, 26 |
| 15 | FIAM Small Cap Core Composite | 511.40K (1.09%) | -41.90K Decreased by -8.19% | Dec 31, 25 |
| 16 | HBM Healthcare Investments AG Ord | 495.85K (1.06%) | 0.00 Increased by 0.00% | Dec 31, 23 |
| 17 | US Small-Cap Growth II Equity Comp | 483.24K (1.03%) | 483.24K Increased by +100.00% | Mar 31, 26 |
| 18 | Fidelity Small Cap Index | 480.49K (1.03%) | 41.46K Increased by +8.63% | Mar 31, 26 |
| 19 | BlackRock Health Sciences Opps Inv A | 473.15K (1.01%) | 0.00 Increased by 0.00% | Apr 30, 26 |
| 20 | RTW Biotech Opportunities Ord | 457.19K (0.98%) | 457.19K Increased by +100.00% | Jun 30, 25 |