| Rank | Holder | SharesFloat % | Change | Date reported |
|---|---|---|---|---|
| 1 | RTW INVESTMENTS, LLC | 6.58M (9.34%) | 0.00 Increased by 0.00% | Mar 31, 26 |
| 2 | BlackRock Inc | 6.19M (8.80%) | 1.44M Increased by +23.28% | Mar 31, 26 |
| 3 | Deep Track Capital, LP | 5.74M (8.16%) | 0.00 Increased by 0.00% | Mar 31, 26 |
| 4 | Armistice Capital, LLC | 4.59M (6.52%) | 1.06M Increased by +23.00% | Mar 31, 26 |
| 5 | Vanguard Group Inc | 4.15M (5.90%) | 673.70K Increased by +16.22% | Dec 31, 25 |
| 6 | Polar Capital Holdings PLC | 3.93M (5.58%) | 2.87M Increased by +73.03% | Dec 31, 25 |
| 7 | Point72 Asset Management, L.P. | 3.88M (5.51%) | 3.88M Increased by +100.00% | Sep 30, 25 |
| 8 | Nantahala Capital Management, LLC | 3.58M (5.09%) | 3.12M Increased by +87.11% | Mar 31, 26 |
| 9 | State Street Corp | 3.52M (5.00%) | 297.36K Increased by +8.46% | Mar 31, 26 |
| 10 | Bvf Inc | 3.40M (4.84%) | 1.30M Increased by +38.30% | Jun 30, 25 |
| 11 | Vanguard Capital Management, LLC | 3.32M (4.72%) | 3.32M Increased by +100.00% | Mar 31, 26 |
| 12 | Stonepine Capital Management Llc | 3.30M (4.69%) | 570.22K Increased by +17.27% | Mar 31, 26 |
| 13 | Balyasny Asset Management LLC | 3.20M (4.54%) | -951.04K Decreased by -29.76% | Dec 31, 25 |
| 14 | Foresite Capital Management VI LLC | 3.15M (4.47%) | 11.51K Increased by +0.37% | Mar 31, 26 |
| 15 | Orbimed Advisors, LLC | 2.86M (4.07%) | 0.00 Increased by 0.00% | Mar 31, 25 |
| 16 | Viking Global Investors LP | 2.46M (3.49%) | 0.00 Increased by 0.00% | Mar 31, 24 |
| 17 | Millennium Management LLC | 2.41M (3.43%) | 1.86M Increased by +76.98% | Mar 31, 26 |
| 18 | Citadel Advisors Llc | 2.31M (3.28%) | -44.80K Decreased by -1.94% | Mar 31, 26 |
| 19 | Morgan Stanley - Brokerage Accounts | 2.25M (3.19%) | 375.71K Increased by +16.72% | Mar 31, 26 |
| 20 | Rosalind Advisors, Inc. | 2.14M (3.04%) | 350.00K Increased by +16.37% | Mar 31, 26 |
| Rank | Holder | SharesFloat % | Change | Date reported |
|---|---|---|---|---|
| 1 | State Street® SPDR® S&P® Biotech ETF | 3.38M (4.80%) | -75.18K Decreased by -2.23% | Jun 30, 26 |
| 2 | Vanguard Total Stock Mkt Idx Inv | 2.81M (4.00%) | 511.76K Increased by +18.20% | Jun 30, 26 |
| 3 | iShares Russell 2000 ETF | 2.08M (2.95%) | 12.34K Increased by +0.59% | Jun 30, 26 |
| 4 | RTW Biotech Opportunities Ord | 1.92M (2.73%) | 1.92M Increased by +100.00% | Jun 30, 25 |
| 5 | SPDR® S&P Biotech ETF | 1.28M (1.82%) | 2.85K Increased by +0.22% | Aug 31, 25 |
| 6 | Vanguard US Total Market Shares ETF | 1.22M (1.73%) | 0.00 Increased by 0.00% | Sep 30, 24 |
| 7 | Vanguard Institutional Extnd Mkt Idx Tr | 960.21K (1.36%) | 132.78K Increased by +13.83% | Jun 30, 26 |
| 8 | Polar Capital Biotech S Inc | 787.74K (1.12%) | -2.71M Decreased by -344.31% | Feb 28, 26 |
| 9 | iShares Russell 2000 Growth ETF | 747.26K (1.06%) | -2.87K Decreased by -0.38% | Jun 30, 26 |
| 10 | Franklin Biotechnology Discv A(acc)USD | 703.22K (1.00%) | 0.00 Increased by 0.00% | May 31, 26 |
| 11 | BlackRock Advantage Small Cap Core Instl | 701.34K (1.00%) | 0.00 Increased by 0.00% | May 31, 26 |
| 12 | Fidelity Small Cap Index | 661.14K (0.94%) | 4.98K Increased by +0.75% | Apr 30, 26 |
| 13 | Fidelity Enhanced Small Cap Core ETF | 575.90K (0.82%) | 0.00 Increased by 0.00% | Jun 30, 26 |
| 14 | Kennedy Micro Cap | 547.19K (0.78%) | 359.19K Increased by +65.64% | Sep 30, 24 |
| 15 | MEDICAL BioHealth EUR Acc | 520.40K (0.74%) | -89.00 Decreased by -0.02% | May 31, 26 |
| 16 | State St Russell Sm/Mid Cp® Indx SL Cl I | 468.62K (0.67%) | 73.80K Increased by +15.75% | Jun 30, 26 |
| 17 | Vanguard Russell 2000 ETF | 459.63K (0.65%) | 116.06K Increased by +25.25% | Jun 30, 26 |
| 18 | Fidelity Enhanced Small Cap ETF | 435.64K (0.62%) | -5.06K Decreased by -1.16% | Apr 30, 26 |
| 19 | Torray Small/Mid Cap Growth | 425.39K (0.60%) | 177.81K Increased by +41.80% | Jun 30, 26 |
| 20 | Russell 2000 Equity Index Fund B | 418.67K (0.59%) | 78.94K Increased by +18.85% | Mar 31, 26 |