| Rank | Holder | SharesFloat % | Change | Date reported |
|---|---|---|---|---|
| 1 | FMR Inc | 22.38M (16.58%) | 298.55K Increased by +1.33% | Dec 31, 25 |
| 2 | ARK Investment Management LLC | 12.55M (9.29%) | 388.03K Increased by +3.09% | Dec 31, 25 |
| 3 | BlackRock Inc | 10.58M (7.84%) | 2.22M Increased by +21.00% | Sep 30, 25 |
| 4 | Redmile Group, LLC | 8.25M (6.11%) | 0.00 Increased by 0.00% | Dec 31, 25 |
| 5 | Vanguard Group Inc | 7.91M (5.86%) | 628.29K Increased by +7.94% | Dec 31, 25 |
| 6 | Geode Capital Management, LLC | 3.24M (2.40%) | 186.71K Increased by +5.76% | Dec 31, 25 |
| 7 | Ameriprise Financial Inc | 3.19M (2.36%) | 625.45K Increased by +19.60% | Sep 30, 25 |
| 8 | Schonfeld Strategic Advisors LLC | 2.35M (1.74%) | 2.35M Increased by +100.00% | Dec 31, 25 |
| 9 | Woodline Partners LP | 2.28M (1.69%) | 510.74K Increased by +22.39% | Dec 31, 25 |
| 10 | Baker Bros Advisors LP | 2.13M (1.58%) | 2.13M Increased by +100.00% | Dec 31, 25 |
| 11 | State Street Corp | 2.06M (1.53%) | 261.88K Increased by +12.68% | Sep 30, 25 |
| 12 | UBS Group AG | 1.99M (1.48%) | 84.27K Increased by +4.23% | Sep 30, 25 |
| 13 | Citadel Advisors Llc | 1.94M (1.44%) | 1.78M Increased by +91.51% | Dec 31, 25 |
| 14 | Bank of America Corp | 1.87M (1.38%) | 303.92K Increased by +16.27% | Jun 30, 25 |
| 15 | Massachusetts Financial Services Company | 1.72M (1.27%) | -488.50K Decreased by -28.40% | Dec 31, 25 |
| 16 | Royce & Associates, LP | 1.52M (1.12%) | 300.00K Increased by +19.75% | Jun 30, 25 |
| 17 | Sumitomo Mitsui Trust Group Inc | 1.49M (1.11%) | 32.32K Increased by +2.16% | Sep 30, 25 |
| 18 | Nikko Asset Management Americas Inc | 1.49M (1.11%) | 350.04K Increased by +23.43% | Mar 31, 25 |
| 19 | Parkman Healthcare Partners LLC | 1.46M (1.08%) | 1.46M Increased by +100.00% | Dec 31, 25 |
| 20 | Amova Asset Management Americas, Inc | 1.42M (1.06%) | -69.27K Decreased by -4.86% | Dec 31, 25 |
| Rank | Holder | SharesFloat % | Change | Date reported |
|---|---|---|---|---|
| 1 | ARK Genomic Revolution ETF | 12.42M (9.20%) | 545.68K Increased by +4.39% | Feb 28, 26 |
| 2 | ARK Genomic Revolution | 11.55M (8.55%) | 460.39K Increased by +3.99% | Dec 31, 25 |
| 3 | Fidelity Growth Compy Commingled Pl S | 9.92M (7.35%) | 108.37K Increased by +1.09% | Jan 31, 26 |
| 4 | Fidelity Growth Company Fund | 6.91M (5.12%) | 60.50K Increased by +0.88% | Jan 31, 26 |
| 5 | Fidelity Growth Compy Commingled Pl O | 5.75M (4.26%) | 0.00 Increased by 0.00% | Aug 31, 24 |
| 6 | Vanguard Total Stock Mkt Idx Inv | 4.25M (3.15%) | 0.00 Increased by 0.00% | Feb 28, 26 |
| 7 | Fidelity® Growth Company | 3.95M (2.92%) | 0.00 Increased by 0.00% | Nov 30, 23 |
| 8 | State Street® SPDR® S&P® Biotech ETF | 3.41M (2.52%) | 18.90K Increased by +0.55% | Feb 28, 26 |
| 9 | iShares Russell 2000 ETF | 3.36M (2.49%) | 2.21M Increased by +65.80% | Feb 28, 26 |
| 10 | Columbia Acorn Inst | 2.57M (1.90%) | 0.00 Increased by 0.00% | Jan 31, 26 |
| 11 | Alger Small Cap Focus Composite | 2.47M (1.83%) | -290.00K Decreased by -11.75% | Jun 30, 25 |
| 12 | Alger Small Cap Focus I | 2.47M (1.83%) | -290.00K Decreased by -11.75% | Jun 30, 25 |
| 13 | Fidelity Growth Company K6 | 2.23M (1.65%) | -10.34K Decreased by -0.46% | Jan 31, 26 |
| 14 | Fidelity Series Growth Company | 1.90M (1.41%) | 15.20K Increased by +0.80% | Jan 31, 26 |
| 15 | Fidelity® Growth Company K6 | 1.57M (1.16%) | -29.92K Decreased by -1.90% | Nov 30, 23 |
| 16 | Fidelity Select Biotechnology | 1.54M (1.14%) | 0.00 Increased by 0.00% | Jan 31, 26 |
| 17 | Vanguard Institutional Extnd Mkt Idx Tr | 1.47M (1.09%) | 21.31K Increased by +1.45% | Feb 28, 26 |
| 18 | US Small-Cap Growth II Equity Comp | 1.35M (1.00%) | 1.35M Increased by +100.00% | Dec 31, 25 |
| 19 | Fidelity Small Cap Index | 1.34M (0.99%) | 3.12K Increased by +0.23% | Dec 31, 25 |
| 20 | MFS New Discovery I | 1.26M (0.94%) | 1.26M Increased by +100.00% | Jan 31, 26 |