| Rank | Holder | SharesFloat % | Change | Date reported |
|---|---|---|---|---|
| 1 | BlackRock Inc | 8.48M (7.92%) | 206.95K Increased by +2.44% | Mar 31, 26 |
| 2 | Driehaus Capital Management LLC | 5.91M (5.52%) | -625.31K Decreased by -10.58% | Mar 31, 26 |
| 3 | venBio Select Advisor LLC | 5.00M (4.67%) | 5.00M Increased by +100.00% | Mar 31, 26 |
| 4 | HHG PLC | 3.56M (3.32%) | 1.14M Increased by +32.18% | Mar 31, 26 |
| 5 | Deep Track Capital, LP | 3.00M (2.80%) | 1.32M Increased by +44.12% | Mar 31, 26 |
| 6 | Vanguard Group Inc | 2.59M (2.42%) | 579.03K Increased by +22.34% | Dec 31, 25 |
| 7 | Geode Capital Management, LLC | 2.50M (2.33%) | 162.46K Increased by +6.51% | Mar 31, 26 |
| 8 | State Street Corp | 2.47M (2.31%) | 103.81K Increased by +4.20% | Mar 31, 26 |
| 9 | Octagon Capital Advisors LP | 2.44M (2.28%) | 210.00K Increased by +8.61% | Mar 31, 26 |
| 10 | Blackstone Inc | 2.06M (1.92%) | -716.76K Decreased by -34.80% | Dec 31, 25 |
| 11 | COMMODORE CAPITAL LP | 2.00M (1.87%) | 0.00 Increased by 0.00% | Mar 31, 26 |
| 12 | FMR Inc | 1.81M (1.69%) | 1.65M Increased by +91.04% | Mar 31, 26 |
| 13 | Trails Edge Capital Partners, LP | 1.74M (1.62%) | -830.00K Decreased by -47.75% | Mar 31, 26 |
| 14 | The Goldman Sachs Group Inc | 1.68M (1.56%) | 1.68M Increased by +100.00% | Mar 31, 26 |
| 15 | ArrowMark Colorado Holdings, LLC (ArrowMark Partners) | 1.59M (1.49%) | 1.59M Increased by +100.00% | Mar 31, 26 |
| 16 | Citadel Advisors Llc | 1.33M (1.25%) | 1.12M Increased by +84.26% | Mar 31, 26 |
| 17 | Wellington Management Company LLP | 1.30M (1.22%) | 84.08K Increased by +6.44% | Mar 31, 26 |
| 18 | Candriam Luxembourg S.C.A. | 1.29M (1.21%) | 322.41K Increased by +24.92% | Mar 31, 26 |
| 19 | Balyasny Asset Management LLC | 1.27M (1.19%) | -33.89K Decreased by -2.66% | Mar 31, 26 |
| 20 | Orbimed Advisors, LLC | 1.23M (1.15%) | 858.88K Increased by +70.02% | Dec 31, 25 |
| Rank | Holder | SharesFloat % | Change | Date reported |
|---|---|---|---|---|
| 1 | iShares Russell 2000 ETF | 2.37M (2.21%) | 21.84K Increased by +0.92% | May 29, 26 |
| 2 | Vanguard Institutional Extnd Mkt Idx Tr | 1.11M (1.04%) | 12.17K Increased by +1.10% | Apr 30, 26 |
| 3 | Fidelity Small Cap Index | 966.08K (0.90%) | 43.71K Increased by +4.52% | Mar 31, 26 |
| 4 | Fidelity Small Cap Growth | 817.40K (0.76%) | 0.00 Increased by 0.00% | Mar 31, 26 |
| 5 | Heptagon Driehaus US Micro Cap Eq C$ Acc | 791.70K (0.74%) | 15.34K Increased by +1.94% | Apr 30, 26 |
| 6 | iShares Biotechnology ETF | 700.52K (0.65%) | 13.41K Increased by +1.91% | May 29, 26 |
| 7 | Janus Henderson Hrzn Biotec E2 USD | 694.53K (0.65%) | 252.31K Increased by +36.33% | Mar 31, 26 |
| 8 | Eventide Healthcare & Life Sciences I | 686.16K (0.64%) | 686.16K Increased by +100.00% | Mar 31, 26 |
| 9 | Russell 2000 Equity Index Fund B | 591.36K (0.55%) | 101.90K Increased by +17.23% | Dec 31, 25 |
| 10 | State St Russell Sm/Mid Cp® Indx SL Cl I | 590.31K (0.55%) | 4.30K Increased by +0.73% | May 31, 26 |
| 11 | iShares Russell 2000 Value ETF | 584.49K (0.55%) | 0.00 Increased by 0.00% | May 29, 26 |
| 12 | Vanguard Explorer Inv | 562.56K (0.53%) | -38.59K Decreased by -6.86% | Mar 31, 26 |
| 13 | Fidelity Extended Market Index | 518.45K (0.48%) | -8.44K Decreased by -1.63% | Apr 30, 26 |
| 14 | Columbia Acorn Inst | 512.39K (0.48%) | 0.00 Increased by 0.00% | Apr 30, 26 |
| 15 | Vanguard Russell 2000 ETF | 497.68K (0.46%) | 13.01K Increased by +2.61% | Apr 30, 26 |
| 16 | Driehaus Small Cap Growth Institutional | 485.87K (0.45%) | 22.05K Increased by +4.54% | Apr 30, 26 |
| 17 | Schwab US Small-Cap ETF™ | 473.07K (0.44%) | 315.00 Increased by +0.07% | May 30, 26 |
| 18 | Nuveen Quant Small Cap Equity R6 | 454.40K (0.42%) | 162.58K Increased by +35.78% | Apr 30, 26 |
| 19 | Heptagon Driehaus US Sm Cp Eq C USD Acc | 446.89K (0.42%) | 2.46K Increased by +0.55% | Apr 30, 26 |
| 20 | Biotech Growth Ord | 438.60K (0.41%) | -288.10K Decreased by -65.69% | Jan 31, 26 |