| Rank | Holder | SharesFloat % | Change | Date reported |
|---|---|---|---|---|
| 1 | FMR Inc | 13.20M (8.10%) | -242.80K Decreased by -1.84% | Mar 31, 25 |
| 2 | RA Capital Management, LLC | 7.51M (4.60%) | 0.00 Increased by 0.00% | Dec 31, 24 |
| 3 | Westfield Capital Management Company, L.P. | 6.92M (4.24%) | 1.20M Increased by +17.40% | Mar 31, 25 |
| 4 | T. Rowe Price Associates, Inc. | 6.73M (4.13%) | -78.30K Decreased by -1.16% | Mar 31, 25 |
| 5 | Hillhouse Capital Advisors, Ltd. | 5.98M (3.67%) | 0.00 Increased by 0.00% | Mar 31, 25 |
| 6 | Westfield Capital Management Company, LP | 5.04M (3.09%) | 266.30K Increased by +5.29% | Sep 30, 24 |
| 7 | BlackRock Inc | 4.53M (2.78%) | -81.45K Decreased by -1.80% | Mar 31, 25 |
| 8 | Suvretta Capital Management, LLC | 3.75M (2.30%) | 253.73K Increased by +6.77% | Mar 31, 25 |
| 9 | Amvescap Plc. | 3.31M (2.03%) | 1.02M Increased by +30.89% | Dec 31, 24 |
| 10 | BRAIDWELL LP | 2.98M (1.83%) | 0.00 Increased by 0.00% | Mar 31, 25 |
| 11 | Citadel Advisors Llc | 2.90M (1.78%) | 1.59M Increased by +54.68% | Dec 31, 24 |
| 12 | Goldman Sachs Group Inc | 2.49M (1.53%) | 2.04M Increased by +81.67% | Dec 31, 24 |
| 13 | Capital World Investors | 2.39M (1.46%) | 0.00 Increased by 0.00% | Mar 31, 24 |
| 14 | Massachusetts Financial Services Company | 2.27M (1.39%) | 6.71K Increased by +0.30% | Mar 31, 25 |
| 15 | HHG PLC | 2.06M (1.26%) | -98.94K Decreased by -4.81% | Mar 31, 25 |
| 16 | Wellington Management Company LLP | 1.86M (1.14%) | -263.51K Decreased by -14.19% | Mar 31, 25 |
| 17 | Deerfield Management Co | 1.74M (1.07%) | 191.84K Increased by +11.00% | Mar 31, 25 |
| 18 | Adage Capital Partners Gp LLC | 1.71M (1.05%) | 860.41K Increased by +50.36% | Sep 30, 23 |
| 19 | Capital Research & Mgmt Co - Division 3 | 1.68M (1.03%) | -484.24K Decreased by -28.87% | Mar 31, 25 |
| 20 | Millennium Management LLC | 1.66M (1.02%) | 1.29M Increased by +77.63% | Jun 30, 24 |
| Rank | Holder | SharesFloat % | Change | Date reported |
|---|---|---|---|---|
| 1 | Fidelity Select Health Care | 2.80M (1.72%) | 0.00 Increased by 0.00% | Mar 31, 25 |
| 2 | Invesco Developing Markets A | 2.69M (1.65%) | -11.25K Decreased by -0.42% | Mar 31, 25 |
| 3 | Invesco Emerging Markets Equity | 2.69M (1.65%) | -277.61K Decreased by -10.33% | Mar 31, 25 |
| 4 | Fidelity Growth Compy Commingled Pl S | 2.45M (1.50%) | 15.11K Increased by +0.62% | Sep 30, 24 |
| 5 | Fidelity Growth Compy Commingled Pl O | 2.43M (1.49%) | 0.00 Increased by 0.00% | Aug 31, 24 |
| 6 | T. Rowe Price Growth Stock | 2.32M (1.42%) | 0.00 Increased by 0.00% | Sep 30, 24 |
| 7 | T. Rowe Price US Growth Stock Composite | 2.32M (1.42%) | -77.22K Decreased by -3.33% | Sep 30, 24 |
| 8 | T. Rowe Price U.S. Growth Stock SMA | 2.07M (1.27%) | 2.07M Increased by +100.00% | Dec 31, 23 |
| 9 | Fidelity® Growth Company | 1.82M (1.11%) | 62.20K Increased by +3.42% | Nov 30, 23 |
| 10 | Fidelity Growth Company Fund | 1.76M (1.08%) | -3.75K Decreased by -0.21% | Sep 30, 24 |
| 11 | Fidelity Advisor Health Care I | 1.65M (1.01%) | -20.00K Decreased by -1.21% | Mar 31, 25 |
| 12 | MFS Mid Cap Growth A | 1.56M (0.96%) | 0.00 Increased by 0.00% | Mar 31, 25 |
| 13 | MFS Mid Cap Growth Equity | 1.56M (0.96%) | -17.03K Decreased by -1.09% | Mar 31, 25 |
| 14 | T. Rowe Price Lrg Cp Gr I | 1.47M (0.90%) | 0.00 Increased by 0.00% | Mar 31, 25 |
| 15 | T. Rowe Price US Large-Cap Growth Equity | 1.47M (0.90%) | -6.43K Decreased by -0.44% | Mar 31, 25 |
| 16 | Vanguard Health Care Inv | 1.44M (0.88%) | 0.00 Increased by 0.00% | Mar 31, 25 |
| 17 | T. Rowe Price Growth Stock Tr-B | 1.41M (0.87%) | -10.57K Decreased by -0.75% | Sep 30, 24 |
| 18 | Strategic Advisers Fidelity US TtlStk | 1.28M (0.79%) | 0.00 Increased by 0.00% | Mar 31, 25 |
| 19 | American Funds SMALLCAP World A | 1.27M (0.78%) | 0.00 Increased by 0.00% | Mar 31, 25 |
| 20 | Polar Capital Healthcare Opports Inc | 1.07M (0.66%) | -175.82K Decreased by -16.43% | Nov 30, 23 |