| Rank | Holder | SharesFloat % | Change | Date reported |
|---|---|---|---|---|
| 1 | RA Capital Management, LLC | 10.72M (19.07%) | -505.80K Decreased by -4.72% | Sep 30, 23 |
| 2 | Artisan Partners Limited Partnership | 6.00M (10.67%) | -227.04K Decreased by -3.79% | Sep 30, 23 |
| 3 | FMR Inc | 5.14M (9.14%) | -4.52K Decreased by -0.09% | Sep 30, 23 |
| 4 | T. Rowe Price Investment Management,Inc. | 3.98M (7.09%) | 1.61K Increased by +0.04% | Sep 30, 23 |
| 5 | HHG PLC | 3.85M (6.86%) | -26.83K Decreased by -0.70% | Sep 30, 23 |
| 6 | Westfield Capital Management Company, LP | 3.80M (6.77%) | 170.47K Increased by +4.48% | Sep 30, 23 |
| 7 | venBio Select Advisor LLC | 3.67M (6.53%) | 89.44K Increased by +2.44% | Sep 30, 23 |
| 8 | Wellington Management Company LLP | 3.28M (5.83%) | 128.27K Increased by +3.91% | Sep 30, 23 |
| 9 | Capital Research & Mgmt Co - Division 3 | 2.17M (3.86%) | 173.17K Increased by +7.99% | Sep 30, 23 |
| 10 | T. Rowe Price Associates, Inc. | 1.64M (2.91%) | -419.32K Decreased by -25.60% | Sep 30, 23 |
| 11 | Massachusetts Financial Services Company | 1.26M (2.25%) | 176.95K Increased by +13.99% | Sep 30, 23 |
| 12 | Franklin Resources Inc | 1.21M (2.16%) | -40.00 Decreased by -0.00% | Sep 30, 23 |
| 13 | TimesSquare Capital Management, LLC | 842.80K (1.50%) | 75.37K Increased by +8.94% | Sep 30, 23 |
| 14 | Putnam Investments LLC | 772.36K (1.37%) | -127.47K Decreased by -16.50% | Sep 30, 23 |
| 15 | Sofinnova Ventures | 754.03K (1.34%) | 0.00 Increased by 0.00% | Sep 30, 23 |
| 16 | Amvescap Plc. | 672.13K (1.20%) | 57.41K Increased by +8.54% | Sep 30, 23 |
| 17 | Spyglass Capital Management LLC | 614.62K (1.09%) | -43.23K Decreased by -7.03% | Sep 30, 23 |
| 18 | AllianceBernstein L.P. | 602.87K (1.07%) | 24.49K Increased by +4.06% | Sep 30, 23 |
| 19 | Eventide Asset Management, LLC | 575.44K (1.02%) | 6.00 Increased by +0.00% | Sep 30, 23 |
| 20 | Adage Capital Partners Gp LLC | 526.37K (0.94%) | -162.63K Decreased by -30.90% | Sep 30, 23 |
| Rank | Holder | SharesFloat % | Change | Date reported |
|---|---|---|---|---|
| 1 | Vanguard Health Care Inv | 1.64M (2.91%) | 0.00 Increased by 0.00% | Sep 30, 23 |
| 2 | MFS Mid Cap Growth A | 1.17M (2.09%) | 0.00 Increased by 0.00% | Nov 30, 23 |
| 3 | T. Rowe Price Mid-Cap Growth | 1.14M (2.04%) | -5.10K Decreased by -0.45% | Sep 30, 23 |
| 4 | T. Rowe Price US Mid-Cap Growth Equity | 1.14M (2.04%) | -5.10K Decreased by -0.45% | Sep 30, 23 |
| 5 | Artisan Mid Cap Investor | 1.13M (2.00%) | 28.24K Increased by +2.51% | Sep 30, 23 |
| 6 | Artisan U.S. Mid-Cap Growth | 1.13M (2.00%) | 28.24K Increased by +2.51% | Sep 30, 23 |
| 7 | American Funds Growth Fund of Amer A | 1.06M (1.89%) | 130.52K Increased by +12.27% | Sep 30, 23 |
| 8 | Capital Group Growth Fnd of Amer Comp | 1.06M (1.89%) | 130.52K Increased by +12.27% | Sep 30, 23 |
| 9 | Janus Henderson Enterprise D | 990.87K (1.76%) | -3.36K Decreased by -0.34% | Sep 30, 23 |
| 10 | Janus Inst Mid Cap Growth CF | 990.87K (1.76%) | -3.36K Decreased by -0.34% | Sep 30, 23 |
| 11 | MFS Mid Cap Growth Equity | 967.93K (1.72%) | 61.09K Increased by +6.31% | Sep 30, 23 |
| 12 | Fidelity Select Health Care | 900.00K (1.60%) | 0.00 Increased by 0.00% | Nov 30, 23 |
| 13 | Select Health Care | 900.00K (1.60%) | 0.00 Increased by 0.00% | Oct 31, 23 |
| 14 | US Small-Cap Growth II Equity Comp | 869.25K (1.55%) | 869.25K Increased by +100.00% | Jun 30, 23 |
| 15 | T. Rowe Price New Horizons | 844.25K (1.50%) | -25.00K Decreased by -2.96% | Sep 30, 23 |
| 16 | Franklin Biotechnology Discv A(acc)USD | 663.43K (1.18%) | 0.00 Increased by 0.00% | Nov 30, 23 |
| 17 | Fidelity® Select Biotechnology | 659.41K (1.17%) | 0.00 Increased by 0.00% | Nov 30, 23 |
| 18 | Artisan International Investor | 641.29K (1.14%) | -86.03K Decreased by -13.42% | Sep 30, 23 |
| 19 | Artisan Non-U.S. Growth | 641.29K (1.14%) | -86.03K Decreased by -13.42% | Sep 30, 23 |
| 20 | Artisan Small Cap Investor | 622.60K (1.11%) | -38.16K Decreased by -6.13% | Sep 30, 23 |