| Rank | Holder | SharesFloat % | Change | Date reported |
|---|---|---|---|---|
| 1 | FMR Inc | 9.08M (22.12%) | 1.38M Increased by +15.17% | Mar 31, 26 |
| 2 | SR ONE CAPITAL MANAGEMENT, LP | 5.04M (12.27%) | 0.00 Increased by 0.00% | Mar 31, 26 |
| 3 | NEA Management Company, LLC | 4.02M (9.80%) | 500.00K Increased by +12.43% | Mar 31, 26 |
| 4 | Enavate Sciences GP, LLC | 3.92M (9.54%) | 0.00 Increased by 0.00% | Mar 31, 26 |
| 5 | Federated Hermes Inc | 3.13M (7.62%) | 411.45K Increased by +13.16% | Mar 31, 26 |
| 6 | Polar Capital Holdings PLC | 2.55M (6.21%) | 1.49M Increased by +58.50% | Mar 31, 26 |
| 7 | Capital Research & Mgmt Co - Division 3 | 2.43M (5.93%) | 2.43M Increased by +100.00% | Mar 31, 26 |
| 8 | Fairmount Funds Management LLC | 2.36M (5.75%) | 150.00K Increased by +6.36% | Mar 31, 26 |
| 9 | BlackRock Inc | 2.04M (4.96%) | 270.03K Increased by +13.25% | Mar 31, 26 |
| 10 | NVP Associates LLC | 1.84M (4.48%) | 0.00 Increased by 0.00% | Mar 31, 26 |
| 11 | State Street Corp | 1.47M (3.58%) | 1.03M Increased by +70.20% | Mar 31, 26 |
| 12 | Vanguard Group Inc | 1.45M (3.54%) | 290.31K Increased by +19.98% | Dec 31, 25 |
| 13 | Wellington Management Company LLP | 1.25M (3.03%) | 390.72K Increased by +31.36% | Mar 31, 26 |
| 14 | Vanguard Capital Management, LLC | 1.25M (3.03%) | 1.25M Increased by +100.00% | Mar 31, 26 |
| 15 | SILVERARC CAPITAL MANAGEMENT, LLC | 1.14M (2.77%) | 1.14M Increased by +100.00% | Mar 31, 26 |
| 16 | AllianceBernstein L.P. | 897.32K (2.19%) | 878.97K Increased by +97.96% | Mar 31, 26 |
| 17 | EcoR1 Capital, LLC | 789.50K (1.92%) | 0.00 Increased by 0.00% | Mar 31, 26 |
| 18 | Balyasny Asset Management LLC | 667.07K (1.62%) | 473.92K Increased by +71.04% | Mar 31, 26 |
| 19 | ArrowMark Colorado Holdings, LLC (ArrowMark Partners) | 658.91K (1.60%) | -92.25K Decreased by -14.00% | Mar 31, 26 |
| 20 | Geode Capital Management, LLC | 655.78K (1.60%) | 67.39K Increased by +10.28% | Mar 31, 26 |
| Rank | Holder | SharesFloat % | Change | Date reported |
|---|---|---|---|---|
| 1 | American Funds SMALLCAP World A | 2.43M (5.93%) | 2.43M Increased by +100.00% | Mar 31, 26 |
| 2 | Polar Capital Biotech S Inc | 2.29M (5.57%) | -124.99K Decreased by -5.47% | May 31, 26 |
| 3 | Federated Hermes Kaufmann Growth | 1.82M (4.44%) | 241.28K Increased by +13.24% | Mar 31, 26 |
| 4 | Federated Hermes Kaufmann R | 1.82M (4.44%) | 241.28K Increased by +13.24% | Mar 31, 26 |
| 5 | State Street® SPDR® S&P® Biotech ETF | 1.34M (3.27%) | -29.94K Decreased by -2.23% | Jun 30, 26 |
| 6 | Federated Hermes Kaufmann Small Cap A | 1.25M (3.05%) | 154.32K Increased by +12.33% | Mar 31, 26 |
| 7 | Federated Hermes Kaufmann Small Cap Grow | 1.25M (3.05%) | 509.41K Increased by +40.68% | Mar 31, 26 |
| 8 | Fidelity Small Cap Growth | 1.15M (2.80%) | 160.25K Increased by +13.95% | Apr 30, 26 |
| 9 | Fidelity Select Health Care | 1.08M (2.63%) | 0.00 Increased by 0.00% | May 31, 26 |
| 10 | Strategic Advisers Fidelity US TtlStk | 1.01M (2.46%) | 0.00 Increased by 0.00% | May 31, 26 |
| 11 | Vanguard Total Stock Mkt Idx Inv | 891.20K (2.17%) | 0.00 Increased by 0.00% | Jun 30, 26 |
| 12 | iShares Russell 2000 ETF | 749.31K (1.82%) | 4.46K Increased by +0.59% | Jun 30, 26 |
| 13 | Fidelity Small Cap Growth K6 | 611.14K (1.49%) | 80.02K Increased by +13.09% | Apr 30, 26 |
| 14 | Fidelity Stock Selector Small Cap | 551.14K (1.34%) | 14.90K Increased by +2.70% | Apr 30, 26 |
| 15 | Fidelity Advisor Health Care I | 500.00K (1.22%) | 0.00 Increased by 0.00% | May 31, 26 |
| 16 | FIAM Small Cap Core CIT Cl B | 493.47K (1.20%) | 0.00 Increased by 0.00% | Apr 30, 26 |
| 17 | FIAM Small Cap Core Composite | 493.47K (1.20%) | 144.10K Increased by +29.20% | Mar 31, 26 |
| 18 | Fidelity Advisor Biotechnology I | 491.72K (1.20%) | -119.20K Decreased by -24.24% | May 31, 26 |
| 19 | AB Small Cap Growth A | 467.85K (1.14%) | 69.91K Increased by +14.94% | May 31, 26 |
| 20 | T. Rowe Price New Horizons | 466.35K (1.14%) | 238.00K Increased by +51.04% | Jun 30, 26 |