| Rank | Holder | SharesFloat % | Change | Date reported |
|---|---|---|---|---|
| 1 | FMR Inc | 7.77M (14.23%) | 1.34M Increased by +17.20% | Mar 31, 26 |
| 2 | Avidity Partners Management LP | 4.21M (7.71%) | 2.10M Increased by +50.00% | Mar 31, 26 |
| 3 | BlackRock Inc | 3.18M (5.82%) | 1.26M Increased by +39.69% | Mar 31, 26 |
| 4 | RA Capital Management, LLC | 2.61M (4.78%) | 1.00M Increased by +38.29% | Mar 31, 26 |
| 5 | Wellington Management Company LLP | 2.60M (4.75%) | 92.59K Increased by +3.57% | Mar 31, 26 |
| 6 | Fairmount Funds Management LLC | 2.54M (4.65%) | 400.00K Increased by +15.77% | Mar 31, 26 |
| 7 | Vanguard Group Inc | 2.05M (3.75%) | 406.25K Increased by +19.83% | Dec 31, 25 |
| 8 | Vanguard Capital Management, LLC | 2.03M (3.72%) | 2.03M Increased by +100.00% | Mar 31, 26 |
| 9 | Octagon Capital Advisors LP | 1.95M (3.57%) | -470.00K Decreased by -24.14% | Mar 31, 26 |
| 10 | TCG Crossover Management, LLC | 1.68M (3.07%) | 0.00 Increased by 0.00% | Mar 31, 26 |
| 11 | Citadel Advisors Llc | 1.61M (2.95%) | 541.55K Increased by +33.63% | Mar 31, 26 |
| 12 | State Street Corp | 1.40M (2.56%) | -108.71K Decreased by -7.77% | Mar 31, 26 |
| 13 | T. Rowe Price Investment Management,Inc. | 1.29M (2.37%) | 1.29M Increased by +100.00% | Mar 31, 26 |
| 14 | VR Adviser, LLC | 1.18M (2.16%) | 180.00K Increased by +15.25% | Mar 31, 26 |
| 15 | Point72 Asset Management, L.P. | 1.17M (2.14%) | -875.87K Decreased by -75.11% | Dec 31, 25 |
| 16 | Fred Alger Management, LLC | 1.16M (2.13%) | 1.13M Increased by +97.12% | Mar 31, 26 |
| 17 | T. Rowe Price Associates, Inc. | 1.15M (2.10%) | 530.91K Increased by +46.29% | Mar 31, 26 |
| 18 | Polar Capital Holdings PLC | 1.08M (1.97%) | 71.28K Increased by +6.62% | Mar 31, 26 |
| 19 | Deerfield Management Co | 1.02M (1.87%) | 1.02M Increased by +100.00% | Mar 31, 26 |
| 20 | Franklin Resources Inc | 968.18K (1.77%) | 505.36K Increased by +52.20% | Mar 31, 26 |
| Rank | Holder | SharesFloat % | Change | Date reported |
|---|---|---|---|---|
| 1 | Fidelity Growth Compy Commingled Pl S | 2.11M (3.87%) | 6.75K Increased by +0.32% | Apr 30, 26 |
| 2 | Vanguard Total Stock Mkt Idx Inv | 1.57M (2.88%) | 4.26K Increased by +0.27% | Apr 30, 26 |
| 3 | Fidelity Growth Company Fund | 1.52M (2.78%) | 4.10K Increased by +0.27% | Apr 30, 26 |
| 4 | Vanguard Health Care Inv | 1.46M (2.68%) | -114.23K Decreased by -7.82% | Mar 31, 26 |
| 5 | Polar Capital Biotech S Inc | 1.02M (1.86%) | 0.00 Increased by 0.00% | Apr 30, 26 |
| 6 | iShares Russell 2000 ETF | 858.09K (1.57%) | 7.90K Increased by +0.92% | May 29, 26 |
| 7 | Fidelity Advisor Biotechnology I | 730.06K (1.34%) | 0.00 Increased by 0.00% | Apr 30, 26 |
| 8 | State Street® SPDR® S&P® Biotech ETF | 649.41K (1.19%) | -3.99K Decreased by -0.61% | May 31, 26 |
| 9 | T. Rowe Price Small-Cap Stock | 560.35K (1.03%) | 61.05K Increased by +10.89% | Apr 30, 26 |
| 10 | T. Rowe Price US Small-Cap Core Equity | 499.30K (0.91%) | 499.30K Increased by +100.00% | Mar 31, 26 |
| 11 | Fidelity Small Cap Growth | 468.39K (0.86%) | 22.85K Increased by +4.88% | Mar 31, 26 |
| 12 | Franklin Biotechnology Discv A(acc)USD | 464.89K (0.85%) | 0.00 Increased by 0.00% | Apr 30, 26 |
| 13 | Fidelity Growth Company K6 | 422.25K (0.77%) | -254.00 Decreased by -0.06% | Apr 30, 26 |
| 14 | Fidelity Select Biotechnology | 420.52K (0.77%) | -11.70K Decreased by -2.78% | Apr 30, 26 |
| 15 | Vanguard Institutional Extnd Mkt Idx Tr | 416.00K (0.76%) | 3.46K Increased by +0.83% | Apr 30, 26 |
| 16 | Fidelity Series Growth Company | 410.08K (0.75%) | 1.10K Increased by +0.27% | Apr 30, 26 |
| 17 | Fidelity Series Small Cap Opps | 402.31K (0.74%) | 0.00 Increased by 0.00% | Feb 28, 26 |
| 18 | Fidelity Stock Selector Small Cap | 364.22K (0.67%) | -90.10K Decreased by -24.74% | Mar 31, 26 |
| 19 | Alger Focus Equity Composite | 361.88K (0.66%) | 361.88K Increased by +100.00% | Mar 31, 26 |
| 20 | Alger Focus Equity I | 361.88K (0.66%) | 361.88K Increased by +100.00% | Mar 31, 26 |