| Rank | Holder | SharesFloat % | Change | Date reported |
|---|---|---|---|---|
| 1 | Vanguard Group Inc | 7.23M (12.92%) | -1.33M Decreased by -18.42% | Dec 31, 25 |
| 2 | BlackRock Inc | 6.80M (12.15%) | -524.92K Decreased by -7.72% | Mar 31, 26 |
| 3 | EcoR1 Capital, LLC | 6.73M (12.02%) | 0.00 Increased by 0.00% | Dec 31, 24 |
| 4 | Logos Global Management LP | 5.58M (9.97%) | 2.27M Increased by +40.81% | Sep 30, 25 |
| 5 | Vanguard Portfolio Management, LLC | 3.89M (6.95%) | 3.89M Increased by +100.00% | Mar 31, 26 |
| 6 | D. E. Shaw & Co LP | 3.64M (6.50%) | -50.63K Decreased by -1.39% | Mar 31, 26 |
| 7 | Pfizer Inc | 3.46M (6.18%) | 0.00 Increased by 0.00% | Mar 31, 26 |
| 8 | RTW INVESTMENTS, LLC | 3.33M (5.96%) | 0.00 Increased by 0.00% | Mar 31, 25 |
| 9 | Vanguard Capital Management, LLC | 2.69M (4.81%) | 2.69M Increased by +100.00% | Mar 31, 26 |
| 10 | Bellevue Group AG | 2.39M (4.27%) | 3.00K Increased by +0.13% | Dec 31, 24 |
| 11 | TCG Crossover Management, LLC | 2.39M (4.27%) | -278.75K Decreased by -11.68% | Mar 31, 26 |
| 12 | Paradigm Biocapital Advisors LP | 2.34M (4.18%) | -98.19K Decreased by -4.20% | Sep 30, 24 |
| 13 | Point72 Asset Management, L.P. | 2.32M (4.14%) | 2.32M Increased by +100.00% | Dec 31, 25 |
| 14 | T. Rowe Price Investment Management,Inc. | 2.21M (3.95%) | 2.21M Increased by +100.00% | Dec 31, 24 |
| 15 | Armistice Capital, LLC | 1.98M (3.54%) | 178.00K Increased by +9.00% | Mar 31, 26 |
| 16 | JPMorgan Chase & Co | 1.86M (3.32%) | -2.80M Decreased by -150.86% | Dec 31, 24 |
| 17 | Two Sigma Investments LLC | 1.83M (3.27%) | 839.65K Increased by +45.83% | Mar 31, 26 |
| 18 | State Street Corp | 1.83M (3.27%) | -14.94K Decreased by -0.82% | Mar 31, 26 |
| 19 | Alyeska Investment Group, L.P. | 1.80M (3.22%) | 1.80M Increased by +100.00% | Mar 31, 25 |
| 20 | ArrowMark Colorado Holdings, LLC (ArrowMark Partners) | 1.78M (3.18%) | 532.11K Increased by +29.95% | Dec 31, 24 |
| Rank | Holder | SharesFloat % | Change | Date reported |
|---|---|---|---|---|
| 1 | BB Biotech AG Ord | 2.38M (4.25%) | 0.00 Increased by 0.00% | Dec 31, 24 |
| 2 | Vanguard US Total Market Shares ETF | 1.93M (3.46%) | 2.43K Increased by +0.13% | Sep 30, 24 |
| 3 | Vanguard Total Stock Mkt Idx Inv | 1.92M (3.43%) | 0.00 Increased by 0.00% | Apr 30, 26 |
| 4 | Vanguard Strategic Equity Inv | 1.62M (2.89%) | 0.00 Increased by 0.00% | Mar 31, 26 |
| 5 | iShares Russell 2000 ETF | 1.33M (2.38%) | 12.27K Increased by +0.92% | May 29, 26 |
| 6 | Vanguard Explorer Inv | 896.37K (1.60%) | -125.05K Decreased by -13.95% | Mar 31, 26 |
| 7 | Vanguard Small Cap Index | 841.18K (1.50%) | -5.64K Decreased by -0.67% | Jul 31, 25 |
| 8 | JPMorgan Small Cap Growth A | 755.08K (1.35%) | -8.49K Decreased by -1.12% | Feb 28, 25 |
| 9 | Vanguard Institutional Extnd Mkt Idx Tr | 723.41K (1.29%) | 11.43K Increased by +1.58% | Apr 30, 26 |
| 10 | US Small-Cap Growth II Equity Comp | 715.98K (1.28%) | -1.17M Decreased by -163.57% | Jun 30, 25 |
| 11 | T. Rowe Price Small-Cap Stock | 702.69K (1.26%) | 94.70K Increased by +13.48% | Feb 28, 25 |
| 12 | FIAM Small Cap Core Composite | 601.40K (1.07%) | -165.20K Decreased by -27.47% | Dec 31, 24 |
| 13 | FIAM Small Cap Core CIT Cl B | 587.40K (1.05%) | -14.00K Decreased by -2.38% | Feb 28, 25 |
| 14 | iShares Russell 2000 Growth ETF | 555.88K (0.99%) | 0.00 Increased by 0.00% | May 31, 25 |
| 15 | Fidelity Small Cap Index | 546.15K (0.98%) | -96.88K Decreased by -17.74% | Mar 31, 26 |
| 16 | BlackRock Advantage Small Cap Core Instl | 529.73K (0.95%) | 172.28K Increased by +32.52% | Apr 30, 26 |
| 17 | T. Rowe Price New Horizons Tr-A | 525.56K (0.94%) | 757.00 Increased by +0.14% | Mar 31, 25 |
| 18 | T. Rowe Price New Horizons Tr-Z | 525.56K (0.94%) | 757.00 Increased by +0.14% | Mar 31, 25 |
| 19 | Vanguard Strategic Small-Cap Equity Inv | 488.69K (0.87%) | 0.00 Increased by 0.00% | Mar 31, 26 |
| 20 | T. Rowe Price Integrated US Sm Gr Eq | 486.94K (0.87%) | 0.00 Increased by 0.00% | Mar 31, 25 |