| Rank | Holder | SharesFloat % | Change | Date reported |
|---|---|---|---|---|
| 1 | Cormorant Asset Management, LLC | 8.27M (12.60%) | -60.00K Decreased by -0.73% | Dec 31, 25 |
| 2 | Suvretta Capital Management, LLC | 7.83M (11.93%) | 1.63M Increased by +20.89% | Dec 31, 25 |
| 3 | BlackRock Inc | 4.96M (7.57%) | -395.69K Decreased by -7.97% | Sep 30, 25 |
| 4 | Vanguard Group Inc | 4.82M (7.35%) | 1.03M Increased by +21.31% | Dec 31, 25 |
| 5 | Adage Capital Partners Gp LLC | 4.70M (7.16%) | -859.78K Decreased by -18.29% | Dec 31, 25 |
| 6 | Federated Hermes Inc | 4.42M (6.73%) | -183.12K Decreased by -4.15% | Sep 30, 25 |
| 7 | Franklin Resources Inc | 4.17M (6.36%) | -129.24K Decreased by -3.10% | Sep 30, 25 |
| 8 | Paradigm Biocapital Advisors LP | 3.69M (5.63%) | 1.69M Increased by +45.68% | Dec 31, 25 |
| 9 | TCG Crossover Management, LLC | 3.57M (5.45%) | 0.00 Increased by 0.00% | Dec 31, 25 |
| 10 | RA Capital Management, LLC | 3.18M (4.85%) | 0.00 Increased by 0.00% | Mar 31, 25 |
| 11 | Orbimed Advisors, LLC | 2.47M (3.76%) | 672.31K Increased by +27.24% | Dec 31, 25 |
| 12 | Citadel Advisors Llc | 2.14M (3.26%) | -208.82K Decreased by -9.78% | Sep 30, 25 |
| 13 | Millennium Management LLC | 2.05M (3.12%) | 917.80K Increased by +44.85% | Mar 31, 24 |
| 14 | Geode Capital Management, LLC | 1.90M (2.90%) | 374.84K Increased by +19.74% | Dec 31, 25 |
| 15 | Aberdeen Group PLC | 1.61M (2.45%) | 809.18K Increased by +50.39% | Dec 31, 25 |
| 16 | Perceptive Advisors LLC | 1.54M (2.34%) | 0.00 Increased by 0.00% | Mar 31, 25 |
| 17 | State Street Corp | 1.47M (2.25%) | -42.35K Decreased by -2.87% | Sep 30, 25 |
| 18 | T. Rowe Price Associates, Inc. | 1.35M (2.06%) | -790.73K Decreased by -58.40% | Mar 31, 25 |
| 19 | Patient Square Capital | 1.35M (2.06%) | -129.14K Decreased by -9.55% | Jun 30, 25 |
| 20 | Goldman Sachs Group Inc | 1.28M (1.95%) | -250.86K Decreased by -19.59% | Jun 30, 25 |
| Rank | Holder | SharesFloat % | Change | Date reported |
|---|---|---|---|---|
| 1 | Federated Hermes Kaufmann Growth | 2.77M (4.22%) | 733.00K Increased by +26.45% | Dec 31, 25 |
| 2 | Federated Hermes Kaufmann R | 2.77M (4.22%) | 733.00K Increased by +26.45% | Dec 31, 25 |
| 3 | Vanguard Total Stock Mkt Idx Inv | 2.60M (3.96%) | 0.00 Increased by 0.00% | Feb 28, 26 |
| 4 | Franklin Biotechnology Discv A(acc)USD | 2.19M (3.34%) | 0.00 Increased by 0.00% | Dec 31, 25 |
| 5 | Federated Hermes Kaufmann Small Cap A | 1.98M (3.02%) | 497.00K Increased by +25.08% | Dec 31, 25 |
| 6 | Federated Hermes Kaufmann Small Cap Grow | 1.98M (3.02%) | 497.00K Increased by +25.08% | Dec 31, 25 |
| 7 | iShares Russell 2000 ETF | 1.87M (2.86%) | -15.32K Decreased by -0.82% | Mar 31, 26 |
| 8 | Vanguard US Total Market Shares ETF | 1.56M (2.38%) | 0.00 Increased by 0.00% | Sep 30, 24 |
| 9 | Franklin Small Cap Growth Adv | 1.36M (2.07%) | 75.17K Increased by +5.54% | Feb 28, 26 |
| 10 | Franklin US Small Cap Growth Equity | 1.28M (1.95%) | 110.25K Increased by +8.60% | Dec 31, 25 |
| 11 | Franklin Biotechnology Discovery A | 1.27M (1.93%) | 0.00 Increased by 0.00% | Feb 28, 26 |
| 12 | Franklin Small Cap Growth SMA | 1.27M (1.93%) | 1.27M Increased by +99.99% | Jun 30, 25 |
| 13 | abrdn Healthcare Investors | 1.21M (1.85%) | 143.01K Increased by +11.80% | Feb 28, 26 |
| 14 | T. Rowe Price New Horizons | 900.54K (1.37%) | -248.79K Decreased by -27.63% | Mar 31, 25 |
| 15 | US Small-Cap Growth II Equity Comp | 900.54K (1.37%) | -249.12K Decreased by -27.66% | Mar 31, 25 |
| 16 | Vanguard Institutional Extnd Mkt Idx Tr | 852.03K (1.30%) | 9.70K Increased by +1.14% | Feb 28, 26 |
| 17 | HSBC GIF Glb Eq Sust Hlthcare AC USD | 812.79K (1.24%) | 111.66K Increased by +13.74% | Jan 31, 26 |
| 18 | Biotech Growth Ord | 774.31K (1.18%) | -106.99K Decreased by -13.82% | Dec 31, 25 |
| 19 | Fidelity Small Cap Index | 731.16K (1.11%) | -10.40K Decreased by -1.42% | Jan 31, 26 |
| 20 | Columbia Small Cap Growth | 693.23K (1.06%) | 251.24K Increased by +36.24% | Jun 30, 24 |