| Rank | Holder | SharesFloat % | Change | Date reported |
|---|---|---|---|---|
| 1 | Vanguard Group Inc | 8.36M (13.24%) | 1.30M Increased by +15.54% | Mar 31, 25 |
| 2 | EcoR1 Capital, LLC | 6.73M (10.65%) | 0.00 Increased by 0.00% | Dec 31, 24 |
| 3 | BlackRock Inc | 6.17M (9.77%) | -396.54K Decreased by -6.43% | Mar 31, 25 |
| 4 | Citadel Advisors Llc | 3.88M (6.14%) | 803.18K Increased by +20.72% | Mar 31, 25 |
| 5 | T. Rowe Price Associates, Inc. | 3.83M (6.06%) | -277.95K Decreased by -7.27% | Mar 31, 25 |
| 6 | Pfizer Inc | 3.46M (5.48%) | 0.00 Increased by 0.00% | Mar 31, 25 |
| 7 | RTW INVESTMENTS, LLC | 3.33M (5.28%) | 0.00 Increased by 0.00% | Mar 31, 25 |
| 8 | Bellevue Group AG | 2.39M (3.78%) | 3.00K Increased by +0.13% | Dec 31, 24 |
| 9 | Paradigm Biocapital Advisors LP | 2.34M (3.71%) | -98.19K Decreased by -4.20% | Sep 30, 24 |
| 10 | T. Rowe Price Investment Management,Inc. | 2.21M (3.50%) | 2.21M Increased by +100.00% | Dec 31, 24 |
| 11 | UBS Group AG | 2.04M (3.23%) | 1.57M Increased by +76.87% | Dec 31, 24 |
| 12 | Opaleye Management Inc | 1.98M (3.13%) | 350.00K Increased by +17.72% | Mar 31, 25 |
| 13 | State Street Corp | 1.90M (3.00%) | 259.14K Increased by +13.67% | Mar 31, 25 |
| 14 | JPMorgan Chase & Co | 1.86M (2.94%) | -2.80M Decreased by -150.86% | Dec 31, 24 |
| 15 | Alyeska Investment Group, L.P. | 1.80M (2.85%) | 1.80M Increased by +100.00% | Mar 31, 25 |
| 16 | ArrowMark Colorado Holdings, LLC (ArrowMark Partners) | 1.78M (2.81%) | 532.11K Increased by +29.95% | Dec 31, 24 |
| 17 | New Leaf Venture Partners, L.L.C. | 1.59M (2.51%) | 0.00 Increased by 0.00% | Mar 31, 25 |
| 18 | FMR Inc | 1.56M (2.47%) | -1.32M Decreased by -84.99% | Dec 31, 24 |
| 19 | Geode Capital Management, LLC | 1.54M (2.43%) | 25.78K Increased by +1.68% | Mar 31, 25 |
| 20 | Nextech Invest AG | 1.41M (2.23%) | 0.00 Increased by 0.00% | Dec 31, 24 |
| Rank | Holder | SharesFloat % | Change | Date reported |
|---|---|---|---|---|
| 1 | BB Biotech AG Ord | 2.38M (3.77%) | 0.00 Increased by 0.00% | Dec 31, 24 |
| 2 | Vanguard Total Stock Mkt Idx Inv | 2.05M (3.25%) | 114.30K Increased by +5.56% | Apr 30, 25 |
| 3 | Vanguard US Total Market Shares ETF | 1.93M (3.06%) | 2.43K Increased by +0.13% | Sep 30, 24 |
| 4 | T. Rowe Price New Horizons | 1.89M (2.99%) | -128.42K Decreased by -6.81% | Mar 31, 25 |
| 5 | US Small-Cap Growth II Equity Comp | 1.89M (2.99%) | -129.00K Decreased by -6.84% | Mar 31, 25 |
| 6 | iShares Russell 2000 ETF | 1.61M (2.55%) | 0.00 Increased by 0.00% | May 31, 25 |
| 7 | Vanguard Small Cap Index | 1.56M (2.47%) | 18.09K Increased by +1.16% | Apr 30, 25 |
| 8 | Vanguard Institutional Extnd Mkt Idx Tr | 1.01M (1.59%) | 2.09K Increased by +0.21% | Apr 30, 25 |
| 9 | Vanguard Explorer Inv | 871.97K (1.38%) | -332.49K Decreased by -38.13% | Mar 31, 25 |
| 10 | Vanguard Small Cap Growth Index Inv | 865.58K (1.37%) | 1.87K Increased by +0.22% | Apr 30, 25 |
| 11 | JPMorgan Small Cap Growth A | 755.08K (1.20%) | -8.49K Decreased by -1.12% | Feb 28, 25 |
| 12 | T. Rowe Price Small-Cap Stock | 702.69K (1.11%) | 94.70K Increased by +13.48% | Feb 28, 25 |
| 13 | Vanguard Strategic Equity Inv | 652.73K (1.03%) | 312.58K Increased by +47.89% | Mar 31, 25 |
| 14 | Fidelity Small Cap Index | 645.40K (1.02%) | 3.31K Increased by +0.51% | Mar 31, 25 |
| 15 | Federated Hermes MDT SCC Institutional | 610.45K (0.97%) | 579.01K Increased by +94.85% | Mar 31, 25 |
| 16 | Federated Hermes MDT Small Cap Core IS | 610.45K (0.97%) | 579.01K Increased by +94.85% | Mar 31, 25 |
| 17 | FIAM Small Cap Core Composite | 601.40K (0.95%) | -165.20K Decreased by -27.47% | Dec 31, 24 |
| 18 | FIAM Small Cap Core CIT Cl B | 587.40K (0.93%) | -14.00K Decreased by -2.38% | Feb 28, 25 |
| 19 | iShares Russell 2000 Growth ETF | 555.88K (0.88%) | 0.00 Increased by 0.00% | May 31, 25 |
| 20 | T. Rowe Price New Horizons Tr-A | 525.56K (0.83%) | 757.00 Increased by +0.14% | Mar 31, 25 |