| Rank | Holder | SharesFloat % | Change | Date reported |
|---|---|---|---|---|
| 1 | T. Rowe Price Investment Management,Inc. | 27.11M (21.87%) | 8.03M Increased by +29.61% | Dec 31, 25 |
| 2 | BlackRock Inc | 16.40M (13.23%) | 869.38K Increased by +5.30% | Dec 31, 25 |
| 3 | FMR Inc | 12.81M (10.33%) | -283.89K Decreased by -2.22% | Dec 31, 25 |
| 4 | Vanguard Group Inc | 12.05M (9.72%) | 191.34K Increased by +1.59% | Dec 31, 25 |
| 5 | Wellington Management Company LLP | 7.94M (6.40%) | 528.50K Increased by +6.66% | Dec 31, 25 |
| 6 | Tudor Investment Corp Et AL | 6.00M (4.84%) | 6.00M Increased by +100.00% | Sep 30, 25 |
| 7 | State Street Corp | 5.83M (4.70%) | 207.96K Increased by +3.57% | Dec 31, 25 |
| 8 | Darwin Global Management, Ltd. | 4.58M (3.69%) | 4.58M Increased by +100.00% | Jun 30, 24 |
| 9 | State Street Corporation | 4.52M (3.65%) | -1.37M Decreased by -30.37% | Mar 31, 24 |
| 10 | Deep Track Capital, LP | 3.34M (2.69%) | -963.00K Decreased by -28.86% | Dec 31, 25 |
| 11 | venBio Select Advisor LLC | 3.33M (2.69%) | 3.33M Increased by +100.00% | Mar 31, 26 |
| 12 | Geode Capital Management, LLC | 3.06M (2.47%) | 15.81K Increased by +0.52% | Dec 31, 25 |
| 13 | Vestal Point Capital LP | 2.98M (2.40%) | 384.47K Increased by +12.92% | Jun 30, 25 |
| 14 | Bank of America Corp | 2.94M (2.37%) | -120.64K Decreased by -4.10% | Dec 31, 25 |
| 15 | RTW INVESTMENTS, LLC | 2.72M (2.20%) | 0.00 Increased by 0.00% | Mar 31, 26 |
| 16 | HHG PLC | 2.57M (2.07%) | 75.08K Increased by +2.92% | Dec 31, 23 |
| 17 | Polar Capital Holdings PLC | 2.42M (1.95%) | -360.32K Decreased by -14.87% | Dec 31, 25 |
| 18 | The Goldman Sachs Group Inc | 2.37M (1.91%) | 736.96K Increased by +31.07% | Dec 31, 25 |
| 19 | American Century Companies Inc | 2.23M (1.80%) | -499.06K Decreased by -22.42% | Sep 30, 23 |
| 20 | Boxer Capital LLC | 2.10M (1.69%) | 0.00 Increased by 0.00% | Sep 30, 24 |
| Rank | Holder | SharesFloat % | Change | Date reported |
|---|---|---|---|---|
| 1 | iShares Core S&P Small-Cap ETF | 6.66M (5.38%) | 4.87K Increased by +0.07% | Jan 31, 24 |
| 2 | T. Rowe Price Capital Appreciation | 5.11M (4.12%) | 135.55K Increased by +2.65% | Mar 31, 26 |
| 3 | iShares Core S&P Mid-Cap ETF | 4.13M (3.33%) | -2.08K Decreased by -0.05% | Apr 30, 26 |
| 4 | Vanguard Health Care Inv | 4.06M (3.28%) | 14.10K Increased by +0.35% | Mar 31, 26 |
| 5 | Vanguard Total Stock Mkt Idx Inv | 3.90M (3.15%) | 22.79K Increased by +0.58% | Mar 31, 26 |
| 6 | Vanguard US Total Market Shares ETF | 3.75M (3.03%) | 128.42K Increased by +3.43% | Sep 30, 24 |
| 7 | Vanguard Small Cap Index | 2.84M (2.29%) | 66.41K Increased by +2.34% | Mar 31, 26 |
| 8 | iShares Russell 2000 ETF | 2.81M (2.27%) | 23.73K Increased by +0.84% | Apr 30, 26 |
| 9 | Fidelity OTC | 2.27M (1.83%) | 0.00 Increased by 0.00% | Mar 31, 26 |
| 10 | American Funds SMALLCAP World A | 2.11M (1.71%) | 936.12K Increased by +44.26% | Mar 31, 26 |
| 11 | SPDR® S&P Biotech ETF | 2.07M (1.67%) | 4.61K Increased by +0.22% | Aug 31, 25 |
| 12 | T. Rowe Price Mid-Cap Growth | 1.69M (1.36%) | 0.00 Increased by 0.00% | Mar 31, 26 |
| 13 | T. Rowe Price US Mid-Cap Growth Equity | 1.69M (1.36%) | -201.40K Decreased by -11.94% | Mar 31, 26 |
| 14 | Vanguard Small Cap Growth Index Inv | 1.59M (1.28%) | 49.27K Increased by +3.10% | Mar 31, 26 |
| 15 | American Century Heritage Inv | 1.54M (1.24%) | -447.11K Decreased by -29.12% | Sep 30, 23 |
| 16 | American Century US Opport. Mid Cap Gr | 1.54M (1.24%) | -447.11K Decreased by -29.12% | Sep 30, 23 |
| 17 | State Street® SPDR® S&P® Biotech ETF | 1.49M (1.20%) | -10.57K Decreased by -0.71% | Apr 30, 26 |
| 18 | Vanguard Institutional Extnd Mkt Idx Tr | 1.37M (1.10%) | 33.32K Increased by +2.44% | Mar 31, 26 |
| 19 | US Small-Cap Growth II Equity Comp | 1.24M (1.00%) | 52.81K Increased by +4.26% | Mar 31, 24 |
| 20 | Polar Capital Biotech S Inc | 1.23M (0.99%) | 0.00 Increased by 0.00% | Jul 31, 25 |