| Rank | Holder | SharesFloat % | Change | Date reported |
|---|---|---|---|---|
| 1 | EcoR1 Capital, LLC | 7.88M (54.71%) | 0.00 Increased by 0.00% | Jun 30, 25 |
| 2 | First Light Asset Management, LLC | 3.54M (24.57%) | -1.09M Decreased by -30.91% | Jun 30, 25 |
| 3 | Point72 Asset Management, L.P. | 2.47M (17.18%) | 106.50K Increased by +4.30% | Jun 30, 25 |
| 4 | FMR Inc | 1.91M (13.23%) | -1.13M Decreased by -59.05% | Mar 31, 25 |
| 5 | Fidelity Management and Research Company | 1.91M (13.23%) | -1.13M Decreased by -59.05% | Mar 31, 25 |
| 6 | Morgan Stanley - Brokerage Accounts | 1.87M (12.98%) | 1.37M Increased by +73.01% | Jun 30, 25 |
| 7 | Fairmount Funds Management LLC | 1.82M (12.61%) | 1.82M Increased by +100.00% | Dec 31, 24 |
| 8 | BlackRock Inc | 1.79M (12.41%) | -389.66K Decreased by -21.81% | Jun 30, 25 |
| 9 | Vanguard Group Inc | 1.54M (10.67%) | 20.23K Increased by +1.32% | Jun 30, 25 |
| 10 | TANG CAPITAL MANAGEMENT LLC | 1.33M (9.24%) | -214.27K Decreased by -16.10% | Jun 30, 25 |
| 11 | Boxer Capital LLC | 1.30M (9.03%) | 0.00 Increased by 0.00% | Sep 30, 24 |
| 12 | Boxer Capital Management, LLC | 1.30M (9.03%) | 0.00 Increased by 0.00% | Mar 31, 25 |
| 13 | UBS Group AG | 1.27M (8.83%) | 782.23K Increased by +61.47% | Jun 30, 25 |
| 14 | State Street Corporation | 1.21M (8.38%) | 763.06K Increased by +63.20% | Mar 31, 24 |
| 15 | Bank of America Corp | 1.08M (7.48%) | -67.16K Decreased by -6.24% | Jun 30, 25 |
| 16 | BRAIDWELL LP | 1.05M (7.29%) | -104.60K Decreased by -9.96% | Sep 30, 23 |
| 17 | Citigroup Inc | 1.05M (7.27%) | -24.76K Decreased by -2.37% | Jun 30, 25 |
| 18 | Sofinnova Ventures | 1.03M (7.17%) | -127.67K Decreased by -12.37% | Jun 30, 25 |
| 19 | Great Point Partners LLC | 976.98K (6.78%) | 0.00 Increased by 0.00% | Mar 31, 24 |
| 20 | Sanofi | 821.92K (5.71%) | 0.00 Increased by 0.00% | Jun 30, 25 |
| Rank | Holder | SharesFloat % | Change | Date reported |
|---|---|---|---|---|
| 1 | Vanguard US Total Market Shares ETF | 733.95K (5.10%) | 129.10K Increased by +17.59% | Sep 30, 24 |
| 2 | Vanguard Total Stock Mkt Idx Inv | 668.92K (4.64%) | -14.83K Decreased by -2.22% | Jul 31, 25 |
| 3 | Fidelity Small Cap Growth | 625.15K (4.34%) | 0.00 Increased by 0.00% | Mar 31, 25 |
| 4 | Eventide Healthcare & Life Sciences I | 568.32K (3.95%) | 141.32K Increased by +24.87% | Jun 30, 24 |
| 5 | iShares Russell 2000 ETF | 471.53K (3.27%) | 0.00 Increased by 0.00% | Aug 31, 25 |
| 6 | FIAM Small Cap Core Composite | 460.10K (3.19%) | -11.00K Decreased by -2.39% | Mar 31, 25 |
| 7 | US Small-Cap Growth II Equity Comp | 440.07K (3.06%) | -105.21K Decreased by -23.91% | Jun 30, 25 |
| 8 | Fidelity Advisor Biotechnology I | 423.10K (2.94%) | 0.00 Increased by 0.00% | Jan 31, 25 |
| 9 | T. Rowe Price New Horizons | 371.08K (2.58%) | -68.99K Decreased by -18.59% | Jul 31, 25 |
| 10 | T. Rowe Price Health Sciences | 367.82K (2.55%) | 74.18K Increased by +20.17% | Sep 30, 24 |
| 11 | Fidelity Select Biotechnology | 341.57K (2.37%) | 66.10K Increased by +19.35% | Sep 30, 24 |
| 12 | FIAM Small Cap Core CIT Cl B | 341.50K (2.37%) | -118.60K Decreased by -34.73% | Apr 30, 25 |
| 13 | SPDR® S&P Biotech ETF | 326.85K (2.27%) | 730.00 Increased by +0.22% | Aug 31, 25 |
| 14 | Fidelity Stock Selector Small Cap | 317.17K (2.20%) | 15.50K Increased by +4.89% | Jan 31, 25 |
| 15 | Nuveen Quant Small Cap Equity R6 | 302.37K (2.10%) | 28.60K Increased by +9.46% | Jul 31, 25 |
| 16 | Fidelity Small Cap Growth K6 | 280.31K (1.95%) | 1.42K Increased by +0.51% | Mar 31, 25 |
| 17 | Fidelity Series Small Cap Opps | 269.44K (1.87%) | 0.00 Increased by 0.00% | Jan 31, 25 |
| 18 | Vanguard Small Cap Index | 268.97K (1.87%) | 231.00 Increased by +0.09% | Feb 28, 25 |
| 19 | Franklin Biotechnology Discv A(acc)USD | 225.38K (1.56%) | 0.00 Increased by 0.00% | Aug 31, 25 |
| 20 | Victory Science & Technology | 224.90K (1.56%) | 54.66K Increased by +24.30% | Jun 30, 25 |