| Rank | Holder | SharesFloat % | Change | Date reported |
|---|---|---|---|---|
| 1 | RA Capital Management, LLC | 7.26M (19.78%) | 300.00K Increased by +4.13% | Mar 31, 26 |
| 2 | T. Rowe Price Investment Management,Inc. | 6.61M (18.01%) | 3.20M Increased by +48.50% | Mar 31, 26 |
| 3 | Siren, L.L.C. | 5.80M (15.82%) | 586.00K Increased by +10.10% | Mar 31, 26 |
| 4 | Vestal Point Capital LP | 5.42M (14.79%) | 1.85M Increased by +34.10% | Mar 31, 26 |
| 5 | Deep Track Capital, LP | 4.06M (11.08%) | 1.45M Increased by +35.66% | Mar 31, 26 |
| 6 | HHG PLC | 3.34M (9.10%) | 692.93K Increased by +20.75% | Mar 31, 26 |
| 7 | Red Tree Management, LLC | 3.17M (8.64%) | 0.00 Increased by 0.00% | Mar 31, 26 |
| 8 | TPG GP A, LLC | 3.01M (8.21%) | 0.00 Increased by 0.00% | Mar 31, 26 |
| 9 | BlackRock Inc | 2.84M (7.75%) | 315.26K Increased by +11.09% | Mar 31, 26 |
| 10 | Omega Fund Management LLC | 2.39M (6.52%) | 187.50K Increased by +7.84% | Mar 31, 26 |
| 11 | Royalty Pharma Sub-Manager, LLC | 2.39M (6.51%) | 1.13M Increased by +47.11% | Mar 31, 26 |
| 12 | Vanguard Group Inc | 2.19M (5.96%) | -14.78K Decreased by -0.68% | Dec 31, 25 |
| 13 | FMR Inc | 2.10M (5.73%) | -1.25M Decreased by -59.32% | Mar 31, 26 |
| 14 | Vanguard Capital Management, LLC | 1.77M (4.84%) | 1.77M Increased by +100.00% | Mar 31, 26 |
| 15 | Citadel Advisors Llc | 1.66M (4.52%) | 887.08K Increased by +53.46% | Mar 31, 26 |
| 16 | Franklin Resources Inc | 1.62M (4.42%) | 1.62K Increased by +0.10% | Mar 31, 26 |
| 17 | State Street Corp | 1.42M (3.87%) | -230.15K Decreased by -16.21% | Mar 31, 26 |
| 18 | T. Rowe Price Associates, Inc. | 1.38M (3.75%) | -183.34K Decreased by -13.32% | Mar 31, 26 |
| 19 | Jones Hill Capital LP | 1.26M (3.44%) | 1.26M Increased by +100.00% | Mar 31, 26 |
| 20 | Atle Fund Management AB | 1.17M (3.19%) | 1.06M Increased by +90.48% | Mar 31, 26 |
| Rank | Holder | SharesFloat % | Change | Date reported |
|---|---|---|---|---|
| 1 | T. Rowe Price US Small-Cap Core Equity | 2.18M (5.95%) | 767.16K Increased by +35.16% | Mar 31, 26 |
| 2 | T. Rowe Price Small-Cap Stock | 2.15M (5.86%) | -31.91K Decreased by -1.49% | Jun 30, 26 |
| 3 | Vanguard Total Stock Mkt Idx Inv | 1.68M (4.57%) | 305.30K Increased by +18.21% | Jun 30, 26 |
| 4 | T. Rowe Price Instl Small-Cap Stock | 1.16M (3.15%) | -13.52K Decreased by -1.17% | Jun 30, 26 |
| 5 | iShares Russell 2000 ETF | 1.16M (3.15%) | 6.86K Increased by +0.59% | Jun 30, 26 |
| 6 | State Street® SPDR® S&P® Biotech ETF | 1.09M (2.98%) | -24.30K Decreased by -2.22% | Jun 30, 26 |
| 7 | T. Rowe Price U.S. SC Core Eq Tr-D | 1.00M (2.74%) | -29.85K Decreased by -2.97% | Jun 30, 26 |
| 8 | Fidelity Select Biotechnology | 944.90K (2.58%) | 0.00 Increased by 0.00% | May 31, 26 |
| 9 | Franklin Biotechnology Discv A(acc)USD | 665.23K (1.81%) | 0.00 Increased by 0.00% | May 31, 26 |
| 10 | FIAM Small Cap Core Composite | 642.00K (1.75%) | -85.90K Decreased by -13.38% | Dec 31, 25 |
| 11 | T. Rowe Price Integrated US SmCapGrEq | 612.10K (1.67%) | 324.30K Increased by +52.98% | Jun 30, 26 |
| 12 | Franklin Small Cap Growth Adv | 604.14K (1.65%) | 111.35K Increased by +18.43% | Jun 30, 26 |
| 13 | T. Rowe Price Health Sciences | 591.01K (1.61%) | 0.00 Increased by 0.00% | Jun 30, 26 |
| 14 | T. Rowe Price Small-Cap Value | 569.23K (1.55%) | -135.36K Decreased by -23.78% | Jun 30, 26 |
| 15 | Janus Henderson Hrzn Biotec E2 USD | 518.59K (1.41%) | 15.63K Increased by +3.01% | Mar 31, 26 |
| 16 | JPM Global Healthcare C acc USD | 513.89K (1.40%) | 513.89K Increased by +100.00% | Jun 30, 26 |
| 17 | Vanguard Institutional Extnd Mkt Idx Tr | 490.93K (1.34%) | 132.19K Increased by +26.93% | Jun 30, 26 |
| 18 | Franklin Small Cap Growth SMA | 471.21K (1.28%) | 471.16K Increased by +99.99% | Mar 31, 26 |
| 19 | Franklin US Small Cap Growth Equity | 471.21K (1.28%) | -7.44K Decreased by -1.58% | Mar 31, 26 |
| 20 | Franklin Biotechnology Discovery A | 445.40K (1.21%) | 58.00K Increased by +13.02% | Jun 30, 26 |