| Rank | Holder | SharesFloat % | Change | Date reported |
|---|---|---|---|---|
| 1 | BlackRock Inc | 33.88M (10.88%) | 1.35M Increased by +4.00% | Mar 31, 26 |
| 2 | Vanguard Group Inc | 29.70M (9.54%) | 168.67K Increased by +0.57% | Dec 31, 25 |
| 3 | Wellington Management Company LLP | 29.12M (9.35%) | -76.66K Decreased by -0.26% | Jun 30, 25 |
| 4 | UBS Group AG | 15.96M (5.12%) | 10.06M Increased by +63.07% | Mar 31, 26 |
| 5 | venBio Select Advisor LLC | 15.03M (4.82%) | -2.98M Decreased by -19.80% | Sep 30, 25 |
| 6 | Vanguard Capital Management, LLC | 14.02M (4.50%) | 14.02M Increased by +100.00% | Mar 31, 26 |
| 7 | Pentwater Capital Management LP | 14.00M (4.50%) | 2.50M Increased by +17.86% | Mar 31, 26 |
| 8 | Vanguard Portfolio Management, LLC | 13.97M (4.49%) | 13.97M Increased by +100.00% | Mar 31, 26 |
| 9 | State Street Corp | 12.89M (4.14%) | -1.94M Decreased by -15.04% | Mar 31, 26 |
| 10 | Glazer Capital, LLC | 12.72M (4.09%) | 11.12M Increased by +87.39% | Mar 31, 26 |
| 11 | Fidelity International Ltd | 12.56M (4.03%) | 11.60M Increased by +92.38% | Mar 31, 26 |
| 12 | State Street Corporation | 12.44M (4.00%) | -720.58K Decreased by -5.79% | Mar 31, 24 |
| 13 | The Goldman Sachs Group Inc | 11.56M (3.71%) | 5.41M Increased by +46.84% | Mar 31, 26 |
| 14 | Bellevue Group AG | 10.74M (3.45%) | 10.74M Increased by +100.00% | Dec 31, 25 |
| 15 | William Blair Investment Management, LLC | 10.63M (3.41%) | -5.12M Decreased by -48.19% | Dec 31, 25 |
| 16 | Redmile Group, LLC | 9.53M (3.06%) | 2.48M Increased by +26.00% | Mar 31, 25 |
| 17 | Qube Research & Technologies | 8.81M (2.83%) | 4.37M Increased by +49.66% | Mar 31, 26 |
| 18 | HBK INVESTMENTS L P | 8.78M (2.82%) | -6.47M Decreased by -73.62% | Mar 31, 26 |
| 19 | Geode Capital Management, LLC | 8.54M (2.74%) | 1.19M Increased by +13.95% | Mar 31, 26 |
| 20 | O'Connor Alternative Investments, LLC | 8.44M (2.71%) | 8.44M Increased by +100.00% | Mar 31, 26 |
| Rank | Holder | SharesFloat % | Change | Date reported |
|---|---|---|---|---|
| 1 | Vanguard Health Care Inv | 20.89M (6.71%) | 0.00 Increased by 0.00% | Jun 30, 25 |
| 2 | Vanguard Total Stock Mkt Idx Inv | 10.04M (3.22%) | 259.50K Increased by +2.59% | Mar 31, 26 |
| 3 | Vanguard US Total Market Shares ETF | 9.38M (3.01%) | 10.28K Increased by +0.11% | Sep 30, 24 |
| 4 | Vanguard Small Cap Index | 7.25M (2.33%) | 240.68K Increased by +3.32% | Mar 31, 26 |
| 5 | iShares Russell 2000 ETF | 7.22M (2.32%) | -58.94K Decreased by -0.82% | Mar 31, 26 |
| 6 | State Street® SPDR® S&P® Biotech ETF | 6.17M (1.98%) | 362.65K Increased by +5.88% | Mar 31, 26 |
| 7 | BlackRock Event Driven Equity Instl | 6.08M (1.95%) | 0.00 Increased by 0.00% | Mar 31, 26 |
| 8 | Macquarie Small Cap Core I | 5.62M (1.80%) | 614.64K Increased by +10.94% | Jun 30, 25 |
| 9 | Delaware US Small Cap Core Equity (SMA) | 5.30M (1.70%) | -62.03K Decreased by -1.17% | Mar 31, 24 |
| 10 | Macquarie US Small Cap Core Equity | 5.30M (1.70%) | -62.03K Decreased by -1.17% | Mar 31, 24 |
| 11 | Delaware Small Cap Core I | 5.13M (1.65%) | -31.80K Decreased by -0.62% | Sep 30, 24 |
| 12 | SPDR® S&P Biotech ETF | 5.07M (1.63%) | 151.29K Increased by +2.99% | Jul 31, 25 |
| 13 | Janus Henderson Opportunistic Alpha MA | 4.58M (1.47%) | 4.58M Increased by +99.99% | Jun 30, 24 |
| 14 | Janus Henderson US Opportunistic Alpha | 4.58M (1.47%) | -565.02K Decreased by -12.34% | Jun 30, 24 |
| 15 | Fidelity Canadian Large Cap Sr B | 4.46M (1.43%) | 0.00 Increased by 0.00% | Mar 31, 26 |
| 16 | Vanguard Small Cap Growth Index Inv | 4.06M (1.30%) | 170.33K Increased by +4.19% | Mar 31, 26 |
| 17 | American Century Heritage Inv | 3.49M (1.12%) | 0.00 Increased by 0.00% | Mar 31, 25 |
| 18 | American Century US Opport. Mid Cap Gr | 3.49M (1.12%) | 0.00 Increased by 0.00% | Mar 31, 25 |
| 19 | Vanguard Institutional Extnd Mkt Idx Tr | 3.45M (1.11%) | 89.19K Increased by +2.59% | Mar 31, 26 |
| 20 | JPM Global Healthcare C (acc) USD | 3.27M (1.05%) | 0.00 Increased by 0.00% | Jan 31, 24 |