| Rank | Holder | SharesFloat % | Change | Date reported |
|---|---|---|---|---|
| 1 | FMR Inc | 6.24M (11.62%) | 181.36K Increased by +2.91% | Dec 31, 25 |
| 2 | venBio Select Advisor LLC | 5.96M (11.10%) | -190.41K Decreased by -3.19% | Mar 31, 26 |
| 3 | Aberdeen Group PLC | 5.31M (9.88%) | 1.63M Increased by +30.68% | Mar 31, 26 |
| 4 | EcoR1 Capital, LLC | 3.99M (7.43%) | 0.00 Increased by 0.00% | Jun 30, 25 |
| 5 | Vestal Point Capital LP | 3.70M (6.89%) | -1.09M Decreased by -29.53% | Jun 30, 25 |
| 6 | State Street Corporation | 3.48M (6.48%) | 28.59K Increased by +0.82% | Dec 31, 23 |
| 7 | State Street Corp | 3.23M (6.02%) | 1.79M Increased by +55.31% | Dec 31, 25 |
| 8 | JPMorgan Chase & Co | 2.84M (5.28%) | -97.16K Decreased by -3.42% | Mar 31, 26 |
| 9 | RTW INVESTMENTS, LLC | 2.59M (4.82%) | -1.13M Decreased by -43.50% | Mar 31, 26 |
| 10 | Boxer Capital LLC | 2.23M (4.14%) | 2.23M Increased by +100.00% | Sep 30, 24 |
| 11 | Jefferies Financial Group Inc | 2.10M (3.90%) | 2.10M Increased by +100.00% | Jun 30, 25 |
| 12 | Franklin Resources Inc | 1.99M (3.70%) | 383.07K Increased by +19.26% | Sep 30, 25 |
| 13 | BlackRock Inc | 1.97M (3.68%) | 528.89K Increased by +26.78% | Dec 31, 25 |
| 14 | Point72 Asset Management, L.P. | 1.77M (3.30%) | 794.46K Increased by +44.85% | Dec 31, 24 |
| 15 | Sofinnova Ventures | 1.56M (2.90%) | 1.01M Increased by +64.98% | Jun 30, 25 |
| 16 | abrdn PLC | 1.51M (2.81%) | -419.73K Decreased by -27.81% | Dec 31, 24 |
| 17 | Two Sigma Investments LLC | 1.45M (2.70%) | 553.75K Increased by +38.16% | Dec 31, 25 |
| 18 | Goldman Sachs Group Inc | 1.39M (2.59%) | 928.87K Increased by +66.79% | Dec 31, 23 |
| 19 | MPM Oncology Impact Management LP | 1.38M (2.57%) | 1.38M Increased by +100.00% | Dec 31, 25 |
| 20 | Orbimed Advisors, LLC | 1.35M (2.51%) | -716.55K Decreased by -53.16% | Dec 31, 23 |
| Rank | Holder | SharesFloat % | Change | Date reported |
|---|---|---|---|---|
| 1 | abrdn Healthcare Investors | 2.09M (3.90%) | 0.00 Increased by 0.00% | Apr 30, 26 |
| 2 | State Street® SPDR® S&P® Biotech ETF | 1.88M (3.49%) | -13.46K Decreased by -0.72% | Apr 30, 26 |
| 3 | RTW Biotech Opportunities Ord | 1.39M (2.59%) | 1.39M Increased by +100.00% | Jun 30, 25 |
| 4 | abrdn World Healthcare | 1.27M (2.37%) | 284.76K Increased by +22.38% | Mar 31, 26 |
| 5 | abrdn Life Sciences Investors | 972.92K (1.81%) | 0.00 Increased by 0.00% | Apr 30, 26 |
| 6 | abrdn Healthcare Opportunities | 966.85K (1.80%) | 486.94K Increased by +50.36% | Mar 31, 26 |
| 7 | SPDR® S&P Biotech ETF | 838.29K (1.56%) | 1.87K Increased by +0.22% | Aug 31, 25 |
| 8 | Delaware Healthcare I | 706.17K (1.31%) | 0.00 Increased by 0.00% | Sep 30, 24 |
| 9 | Macquarie Healthcare I | 706.17K (1.31%) | 0.00 Increased by 0.00% | Jul 31, 25 |
| 10 | Fidelity Select Pharmaceuticals Port | 705.58K (1.31%) | -254.80K Decreased by -36.11% | Feb 28, 26 |
| 11 | Vanguard Institutional Extnd Mkt Idx Tr | 694.72K (1.29%) | 13.81K Increased by +1.99% | Mar 31, 26 |
| 12 | Fidelity Select Biotechnology | 650.28K (1.21%) | 0.00 Increased by 0.00% | Mar 31, 26 |
| 13 | Biotech Growth Ord | 618.55K (1.15%) | 0.00 Increased by 0.00% | Oct 31, 23 |
| 14 | Franklin Biotechnology Discovery A | 568.80K (1.06%) | 0.00 Increased by 0.00% | Jul 31, 25 |
| 15 | JPMorgan Growth Advantage A | 564.20K (1.05%) | -3.50K Decreased by -0.62% | Mar 31, 26 |
| 16 | Strategic Advisers Fidelity US TtlStk | 563.80K (1.05%) | 0.00 Increased by 0.00% | Dec 31, 25 |
| 17 | JPM US Mid Cap Growth-Composite | 563.65K (1.05%) | -5.19K Decreased by -0.92% | Mar 31, 26 |
| 18 | JPMorgan Mid Cap Growth I | 563.65K (1.05%) | -3.14K Decreased by -0.56% | Mar 31, 26 |
| 19 | MEDICAL BioHealth EUR Acc | 554.36K (1.03%) | 119.24K Increased by +21.51% | Jun 30, 25 |
| 20 | Fidelity Select Health Care | 540.00K (1.01%) | -130.00K Decreased by -24.07% | Feb 28, 26 |