| Rank | Holder | SharesFloat % | Change | Date reported |
|---|---|---|---|---|
| 1 | FMR Inc | 7.43M (14.55%) | 170.02K Increased by +2.29% | Mar 31, 26 |
| 2 | VR Adviser, LLC | 4.15M (8.12%) | 0.00 Increased by 0.00% | Mar 31, 26 |
| 3 | Fairmount Funds Management LLC | 3.71M (7.25%) | 0.00 Increased by 0.00% | Mar 31, 26 |
| 4 | BlackRock Inc | 3.53M (6.90%) | -12.33K Decreased by -0.35% | Mar 31, 26 |
| 5 | Viking Global Investors LP | 2.67M (5.22%) | 0.00 Increased by 0.00% | Mar 31, 26 |
| 6 | Vanguard Group Inc | 2.45M (4.80%) | 676.87K Increased by +27.59% | Dec 31, 25 |
| 7 | Paradigm Biocapital Advisors LP | 2.32M (4.54%) | 610.00K Increased by +26.29% | Mar 31, 26 |
| 8 | RTW INVESTMENTS, LLC | 2.06M (4.03%) | 0.00 Increased by 0.00% | Mar 31, 26 |
| 9 | Deep Track Capital, LP | 2.03M (3.98%) | -127.31K Decreased by -6.26% | Mar 31, 26 |
| 10 | Vanguard Capital Management, LLC | 1.86M (3.64%) | 1.86M Increased by +100.00% | Mar 31, 26 |
| 11 | State Street Corp | 1.61M (3.16%) | 229.61K Increased by +14.23% | Mar 31, 26 |
| 12 | Remedium Capital Partners, LLC | 1.55M (3.04%) | 1.55M Increased by +100.00% | Dec 31, 25 |
| 13 | Avidity Partners Management LP | 1.52M (2.98%) | 860.42K Increased by +56.58% | Mar 31, 26 |
| 14 | Perceptive Advisors LLC | 1.40M (2.73%) | -81.00K Decreased by -5.80% | Mar 31, 26 |
| 15 | Blackstone Inc | 1.17M (2.28%) | 315.01K Increased by +27.03% | Dec 31, 25 |
| 16 | Polar Capital Holdings PLC | 1.05M (2.05%) | 69.41K Increased by +6.62% | Mar 31, 26 |
| 17 | Citadel Advisors Llc | 1.01M (1.97%) | 281.42K Increased by +27.93% | Mar 31, 26 |
| 18 | Franklin Resources Inc | 1.00M (1.97%) | 65.64K Increased by +6.54% | Mar 31, 26 |
| 19 | Geode Capital Management, LLC | 954.87K (1.87%) | 12.36K Increased by +1.29% | Mar 31, 26 |
| 20 | Mercer Global Advisors Inc. | 802.47K (1.57%) | 57.19K Increased by +7.13% | Mar 31, 26 |
| Rank | Holder | SharesFloat % | Change | Date reported |
|---|---|---|---|---|
| 1 | Vanguard Total Stock Mkt Idx Inv | 1.72M (3.36%) | 341.21K Increased by +19.88% | Apr 30, 26 |
| 2 | Fidelity Growth Compy Commingled Pl S | 1.62M (3.16%) | 968.60K Increased by +59.91% | Apr 30, 26 |
| 3 | Polar Capital Biotech S Inc | 1.23M (2.40%) | 236.44K Increased by +19.26% | Apr 30, 26 |
| 4 | Fidelity Growth Company Fund | 1.20M (2.36%) | 724.37K Increased by +60.20% | Apr 30, 26 |
| 5 | iShares Russell 2000 ETF | 1.11M (2.17%) | 10.24K Increased by +0.92% | May 29, 26 |
| 6 | State Street® SPDR® S&P® Biotech ETF | 842.04K (1.65%) | -5.17K Decreased by -0.61% | May 31, 26 |
| 7 | Fidelity Select Health Care | 831.70K (1.63%) | -179.91K Decreased by -21.63% | Apr 30, 26 |
| 8 | Fidelity Advisor Biotechnology I | 737.39K (1.44%) | 26.60K Increased by +3.61% | Apr 30, 26 |
| 9 | Fidelity Select Biotechnology | 562.68K (1.10%) | 86.90K Increased by +15.44% | Apr 30, 26 |
| 10 | Fidelity Small Cap Growth | 553.41K (1.08%) | 0.00 Increased by 0.00% | Mar 31, 26 |
| 11 | Vanguard Institutional Extnd Mkt Idx Tr | 550.72K (1.08%) | 113.23K Increased by +20.56% | Apr 30, 26 |
| 12 | Franklin Biotechnology Discv A(acc)USD | 547.94K (1.07%) | 16.45K Increased by +3.00% | Apr 30, 26 |
| 13 | Fidelity Advisor Health Care I | 424.00K (0.83%) | -136.00K Decreased by -32.08% | Apr 30, 26 |
| 14 | Fidelity Series Small Cap Opps | 410.77K (0.80%) | 0.00 Increased by 0.00% | Mar 31, 26 |
| 15 | iShares Russell 2000 Value ETF | 400.82K (0.78%) | 0.00 Increased by 0.00% | May 29, 26 |
| 16 | Candriam Eqs L Biotech C USD Cap | 400.51K (0.78%) | 0.00 Increased by 0.00% | Nov 30, 25 |
| 17 | T. Rowe Price Health Sciences | 396.02K (0.78%) | -123.90K Decreased by -31.29% | Apr 30, 26 |
| 18 | Fidelity Small Cap Index | 378.26K (0.74%) | 1.06K Increased by +0.28% | Mar 31, 26 |
| 19 | iShares Biotechnology ETF | 372.37K (0.73%) | 75.39K Increased by +20.25% | May 29, 26 |
| 20 | Fidelity Growth Company K6 | 352.31K (0.69%) | 211.12K Increased by +59.92% | Apr 30, 26 |