| Rank | Holder | SharesFloat % | Change | Date reported |
|---|---|---|---|---|
| 1 | HHG PLC | 7.10M (13.80%) | -79.03K Decreased by -1.11% | Mar 31, 26 |
| 2 | FMR Inc | 5.79M (11.25%) | -2.29M Decreased by -39.58% | Mar 31, 26 |
| 3 | Wellington Management Company LLP | 4.43M (8.60%) | 1.10M Increased by +24.94% | Mar 31, 26 |
| 4 | BlackRock Inc | 3.74M (7.27%) | -128.87K Decreased by -3.44% | Mar 31, 26 |
| 5 | Adage Capital Partners Gp LLC | 3.58M (6.95%) | -816.73K Decreased by -22.84% | Jun 30, 25 |
| 6 | Vanguard Group Inc | 3.06M (5.95%) | 253.21K Increased by +8.27% | Dec 31, 25 |
| 7 | State Street Corp | 2.68M (5.21%) | 31.18K Increased by +1.16% | Mar 31, 26 |
| 8 | venBio Select Advisor LLC | 2.30M (4.47%) | -600.00K Decreased by -26.09% | Mar 31, 26 |
| 9 | Vanguard Capital Management, LLC | 2.15M (4.18%) | 2.15M Increased by +100.00% | Mar 31, 26 |
| 10 | Nantahala Capital Management, LLC | 1.74M (3.39%) | 430.12K Increased by +24.66% | Mar 31, 26 |
| 11 | Polar Capital Holdings PLC | 1.70M (3.30%) | 561.93K Increased by +33.08% | Mar 31, 26 |
| 12 | Khrom Capital Management, LLC | 1.51M (2.94%) | 1.51M Increased by +100.00% | Mar 31, 26 |
| 13 | Perceptive Advisors LLC | 1.51M (2.93%) | 5.56K Increased by +0.37% | Mar 31, 25 |
| 14 | Citadel Advisors Llc | 1.51M (2.93%) | -70.88K Decreased by -4.71% | Jun 30, 25 |
| 15 | Westfield Capital Management Company, L.P. | 1.43M (2.78%) | 218.51K Increased by +15.28% | Jun 30, 25 |
| 16 | RA Capital Management, LLC | 1.24M (2.41%) | 1.24M Increased by +100.00% | Sep 30, 23 |
| 17 | Geode Capital Management, LLC | 1.24M (2.41%) | 74.21K Increased by +6.00% | Mar 31, 26 |
| 18 | Millennium Management LLC | 1.24M (2.40%) | 256.50K Increased by +20.75% | Dec 31, 25 |
| 19 | Holocene Advisors, LP | 1.15M (2.24%) | -43.94K Decreased by -3.81% | Jun 30, 25 |
| 20 | Fairmount Funds Management LLC | 1.14M (2.22%) | 1.14M Increased by +100.00% | Sep 30, 23 |
| Rank | Holder | SharesFloat % | Change | Date reported |
|---|---|---|---|---|
| 1 | Vanguard Health Care Inv | 3.01M (5.85%) | 1.03M Increased by +34.32% | Mar 31, 26 |
| 2 | Strategic Advisers Fidelity US TtlStk | 2.05M (3.98%) | 104.15K Increased by +5.08% | Mar 31, 26 |
| 3 | State Street® SPDR® S&P® Biotech ETF | 1.67M (3.25%) | -11.88K Decreased by -0.71% | Apr 30, 26 |
| 4 | Polar Capital Biotech S Inc | 1.61M (3.12%) | 1.61M Increased by +100.00% | Mar 31, 26 |
| 5 | Vanguard Total Stock Mkt Idx Inv | 1.56M (3.04%) | 4.55K Increased by +0.29% | Apr 30, 26 |
| 6 | T. Rowe Price US All-Cap Opp Eq Comp | 1.32M (2.57%) | -132.50K Decreased by -10.04% | Dec 31, 25 |
| 7 | iShares Russell 2000 ETF | 1.19M (2.30%) | 10.01K Increased by +0.84% | Apr 30, 26 |
| 8 | Fidelity Advisor Growth Opps M | 1.04M (2.02%) | 0.00 Increased by 0.00% | Jan 31, 26 |
| 9 | Janus Henderson Global Life Sciences | 987.38K (1.92%) | -14.61K Decreased by -1.48% | Mar 31, 26 |
| 10 | Janus Henderson Global Life Sciences D | 987.38K (1.92%) | -2.42K Decreased by -0.25% | Mar 31, 26 |
| 11 | Fidelity OTC | 947.90K (1.84%) | 0.00 Increased by 0.00% | Feb 28, 26 |
| 12 | T. Rowe Price Health Sciences | 924.65K (1.80%) | 338.20K Increased by +36.58% | Jul 31, 25 |
| 13 | T. Rowe Price All-Cap Opportunities Fund | 923.47K (1.79%) | -396.77K Decreased by -42.97% | Jan 31, 26 |
| 14 | Vanguard US Total Market Shares ETF | 913.59K (1.78%) | 0.00 Increased by 0.00% | Sep 30, 24 |
| 15 | Janus Global Life Science AUSD | 910.95K (1.77%) | 38.90K Increased by +4.27% | Mar 31, 26 |
| 16 | Janus Henderson Glb Life Scn I2 USD | 910.95K (1.77%) | -22.31K Decreased by -2.45% | Mar 31, 26 |
| 17 | Fidelity Select Health Care | 780.00K (1.52%) | 260.00K Increased by +33.33% | Jul 31, 25 |
| 18 | International Biotechnology Ord | 648.53K (1.26%) | 0.00 Increased by 0.00% | Apr 30, 26 |
| 19 | American Funds SMALLCAP World A | 614.83K (1.19%) | 150.00K Increased by +24.40% | Jun 30, 25 |
| 20 | Janus Henderson Triton D | 614.56K (1.19%) | 0.00 Increased by 0.00% | Mar 31, 26 |