| Rank | Holder | SharesFloat % | Change | Date reported |
|---|---|---|---|---|
| 1 | FMR Inc | 25.67M (15.77%) | 12.47M Increased by +48.56% | Jun 30, 25 |
| 2 | RA Capital Management, LLC | 7.51M (4.61%) | 0.00 Increased by 0.00% | Dec 31, 24 |
| 3 | T. Rowe Price Associates, Inc. | 6.73M (4.13%) | -78.30K Decreased by -1.16% | Mar 31, 25 |
| 4 | Westfield Capital Management Company, L.P. | 6.47M (3.98%) | -445.02K Decreased by -6.88% | Jun 30, 25 |
| 5 | Hillhouse Capital Advisors, Ltd. | 5.98M (3.68%) | 0.00 Increased by 0.00% | Jun 30, 25 |
| 6 | Westfield Capital Management Company, LP | 5.04M (3.10%) | 266.30K Increased by +5.29% | Sep 30, 24 |
| 7 | BlackRock Inc | 4.25M (2.61%) | -278.43K Decreased by -6.55% | Jun 30, 25 |
| 8 | Suvretta Capital Management, LLC | 3.77M (2.32%) | 24.04K Increased by +0.64% | Jun 30, 25 |
| 9 | Deerfield Management Co | 2.96M (1.82%) | 1.22M Increased by +41.14% | Jun 30, 25 |
| 10 | Amvescap Plc. | 2.94M (1.80%) | -373.27K Decreased by -12.71% | Mar 31, 25 |
| 11 | Citadel Advisors Llc | 2.90M (1.78%) | 1.59M Increased by +54.68% | Dec 31, 24 |
| 12 | BRAIDWELL LP | 2.54M (1.56%) | -435.85K Decreased by -17.15% | Jun 30, 25 |
| 13 | Capital World Investors | 2.39M (1.47%) | 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 | Artisan Partners Limited Partnership | 2.12M (1.30%) | 990.50K Increased by +46.67% | Jun 30, 25 |
| 16 | HHG PLC | 2.09M (1.29%) | 34.93K Increased by +1.67% | Jun 30, 25 |
| 17 | Wellington Management Company LLP | 1.86M (1.14%) | -263.51K Decreased by -14.19% | Mar 31, 25 |
| 18 | Adage Capital Partners Gp LLC | 1.71M (1.05%) | 860.41K Increased by +50.36% | Sep 30, 23 |
| 19 | Millennium Management LLC | 1.66M (1.02%) | 1.29M Increased by +77.63% | Jun 30, 24 |
| 20 | AllianceBernstein L.P. | 1.56M (0.96%) | 52.34K Increased by +3.35% | Jun 30, 25 |
| Rank | Holder | SharesFloat % | Change | Date reported |
|---|---|---|---|---|
| 1 | Fidelity OTC | 4.68M (2.88%) | 0.00 Increased by 0.00% | Jul 31, 25 |
| 2 | Fidelity Select Health Care | 3.67M (2.25%) | -30.00K Decreased by -0.82% | Jul 31, 25 |
| 3 | Invesco Developing Markets A | 2.69M (1.65%) | 0.00 Increased by 0.00% | May 31, 25 |
| 4 | Invesco Emerging Markets Equity | 2.69M (1.65%) | -277.61K Decreased by -10.33% | Mar 31, 25 |
| 5 | Fidelity Growth Compy Commingled Pl S | 2.45M (1.50%) | 15.11K Increased by +0.62% | Sep 30, 24 |
| 6 | Fidelity Growth Compy Commingled Pl O | 2.43M (1.49%) | 0.00 Increased by 0.00% | Aug 31, 24 |
| 7 | T. Rowe Price Growth Stock | 2.32M (1.43%) | 0.00 Increased by 0.00% | Sep 30, 24 |
| 8 | T. Rowe Price US Growth Stock Composite | 2.32M (1.43%) | -77.22K Decreased by -3.33% | Sep 30, 24 |
| 9 | Fidelity Advisor Health Care I | 2.08M (1.28%) | 0.00 Increased by 0.00% | Jul 31, 25 |
| 10 | T. Rowe Price U.S. Growth Stock SMA | 2.07M (1.27%) | 2.07M Increased by +100.00% | Dec 31, 23 |
| 11 | Fidelity® Growth Company | 1.82M (1.12%) | 62.20K Increased by +3.42% | Nov 30, 23 |
| 12 | Fidelity Growth Company Fund | 1.76M (1.08%) | -3.75K Decreased by -0.21% | Sep 30, 24 |
| 13 | Fidelity VIP Contrafund Initial | 1.76M (1.08%) | 367.69K Increased by +20.91% | Jul 31, 25 |
| 14 | Strategic Advisers Fidelity US TtlStk | 1.68M (1.03%) | -50.00K Decreased by -2.97% | Jul 31, 25 |
| 15 | MFS Mid Cap Growth A | 1.56M (0.96%) | 0.00 Increased by 0.00% | Mar 31, 25 |
| 16 | MFS Mid Cap Growth Equity | 1.56M (0.96%) | -17.03K Decreased by -1.09% | Mar 31, 25 |
| 17 | T. Rowe Price Lrg Cp Gr I | 1.47M (0.90%) | 0.00 Increased by 0.00% | Mar 31, 25 |
| 18 | T. Rowe Price US Large-Cap Growth Equity | 1.47M (0.90%) | -6.43K Decreased by -0.44% | Mar 31, 25 |
| 19 | Vanguard Health Care Inv | 1.44M (0.88%) | 0.00 Increased by 0.00% | Mar 31, 25 |
| 20 | T. Rowe Price Growth Stock Tr-B | 1.41M (0.87%) | -10.57K Decreased by -0.75% | Sep 30, 24 |