| Rank | Holder | SharesFloat % | Change | Date reported |
|---|---|---|---|---|
| 1 | FMR Inc | 8.29M (11.58%) | 762.21K Increased by +9.20% | Mar 31, 25 |
| 2 | venBio Select Advisor LLC | 5.40M (7.54%) | -341.67K Decreased by -6.33% | Jun 30, 25 |
| 3 | Driehaus Capital Management LLC | 4.58M (6.40%) | 64.26K Increased by +1.40% | Mar 31, 25 |
| 4 | BRAIDWELL LP | 3.61M (5.04%) | 895.15K Increased by +24.83% | Jun 30, 25 |
| 5 | HHG PLC | 3.58M (5.00%) | 252.64K Increased by +7.06% | Jun 30, 25 |
| 6 | Capital Research & Mgmt Co - Division 3 | 3.18M (4.44%) | 92.82K Increased by +2.92% | Jun 30, 25 |
| 7 | Polar Capital Holdings PLC | 2.62M (3.66%) | -74.62K Decreased by -2.84% | Mar 31, 25 |
| 8 | COMMODORE CAPITAL LP | 2.33M (3.25%) | -415.00K Decreased by -17.85% | Mar 31, 25 |
| 9 | Capital World Investors | 2.22M (3.11%) | -69.82K Decreased by -3.14% | Mar 31, 25 |
| 10 | Wellington Management Company LLP | 2.17M (3.04%) | -1.61M Decreased by -74.24% | Jun 30, 25 |
| 11 | Paradigm Biocapital Advisors LP | 2.04M (2.85%) | -441.59K Decreased by -21.61% | Jun 30, 24 |
| 12 | BlackRock Inc | 2.04M (2.84%) | -69.11K Decreased by -3.39% | Mar 31, 25 |
| 13 | Adage Capital Partners Gp LLC | 1.91M (2.67%) | 51.28K Increased by +2.68% | Mar 31, 25 |
| 14 | Bvf Inc | 1.83M (2.55%) | 0.00 Increased by 0.00% | Sep 30, 23 |
| 15 | Pictet Asset Manangement SA | 1.48M (2.06%) | -18.89K Decreased by -1.28% | Mar 31, 25 |
| 16 | T. Rowe Price Investment Management,Inc. | 1.44M (2.01%) | -65.98K Decreased by -4.59% | Dec 31, 24 |
| 17 | JPMorgan Chase & Co | 1.36M (1.90%) | 707.00 Increased by +0.05% | Mar 31, 25 |
| 18 | Deep Track Capital, LP | 1.35M (1.89%) | 350.00K Increased by +25.93% | Jun 30, 25 |
| 19 | AllianceBernstein L.P. | 1.33M (1.86%) | -113.79K Decreased by -8.56% | Mar 31, 25 |
| 20 | Affinity Asset Advisors, LLC | 1.33M (1.86%) | 166.94K Increased by +12.57% | Mar 31, 25 |
| Rank | Holder | SharesFloat % | Change | Date reported |
|---|---|---|---|---|
| 1 | American Funds SMALLCAP World A | 3.83M (5.34%) | -1.48M Decreased by -38.59% | Jun 30, 25 |
| 2 | Polar Capital Biotech S Inc | 2.00M (2.79%) | 0.00 Increased by 0.00% | Jun 30, 25 |
| 3 | iShares Russell 2000 ETF | 1.78M (2.49%) | -33.91K Decreased by -1.90% | Jul 31, 25 |
| 4 | Strategic Advisers Fidelity US TtlStk | 1.69M (2.36%) | 20.83K Increased by +1.23% | Jun 30, 25 |
| 5 | Vanguard Health Care Inv | 1.60M (2.23%) | -942.73K Decreased by -58.94% | Jun 30, 25 |
| 6 | Fidelity Select Health Care | 1.28M (1.79%) | 0.00 Increased by 0.00% | Jun 30, 25 |
| 7 | Fidelity Advisor Health Care I | 760.00K (1.06%) | 0.00 Increased by 0.00% | Jun 30, 25 |
| 8 | Fidelity Advisor Biotechnology I | 710.76K (0.99%) | 0.00 Increased by 0.00% | Jun 30, 25 |
| 9 | iShares Russell 2000 Growth ETF | 667.62K (0.93%) | 0.00 Increased by 0.00% | Jul 31, 25 |
| 10 | Pictet Biotech | 658.54K (0.92%) | 658.54K Increased by +100.00% | Mar 31, 24 |
| 11 | Polar Capital Healthcare Opports Inc | 652.16K (0.91%) | 0.00 Increased by 0.00% | Jun 30, 25 |
| 12 | Pictet-Biotech P USD | 617.88K (0.86%) | -10.52K Decreased by -1.70% | Apr 30, 25 |
| 13 | Lord Abbett Developing Growth A | 544.23K (0.76%) | 0.00 Increased by 0.00% | Mar 31, 24 |
| 14 | JPMorgan Small Cap Growth A | 543.38K (0.76%) | 8.10K Increased by +1.49% | Jun 30, 25 |
| 15 | American Century Small Cap Growth Inv | 534.80K (0.75%) | 534.80K Increased by +100.00% | Jun 30, 25 |
| 16 | American Century U.S. Small Cap Growth | 534.80K (0.75%) | 534.80K Increased by +100.00% | Jun 30, 25 |
| 17 | Janus Henderson Triton D | 521.27K (0.73%) | 0.00 Increased by 0.00% | May 31, 25 |
| 18 | Janus Henderson US SMID Cap Growth | 515.20K (0.72%) | -6.08K Decreased by -1.18% | Jun 30, 25 |
| 19 | Janus Henderson US SMID Cap Growth MA | 515.20K (0.72%) | 515.20K Increased by +100.00% | Jun 30, 25 |
| 20 | Fidelity Advisor® Health Care I | 500.00K (0.70%) | -40.00K Decreased by -8.00% | Nov 30, 23 |