| Rank | Holder | SharesFloat % | Change | Date reported |
|---|---|---|---|---|
| 1 | Baker Bros Advisors LP | 36.39M (27.02%) | 0.00 Increased by 0.00% | Mar 31, 26 |
| 2 | FMR Inc | 13.36M (9.92%) | 4.44M Increased by +33.25% | Dec 31, 25 |
| 3 | Vanguard Group Inc | 11.18M (8.30%) | -202.51K Decreased by -1.81% | Dec 31, 25 |
| 4 | T. Rowe Price Associates, Inc. | 9.37M (6.96%) | 4.83M Increased by +51.57% | Dec 31, 25 |
| 5 | BlackRock Inc | 9.36M (6.95%) | 2.00M Increased by +21.34% | Dec 31, 25 |
| 6 | State Street Corporation | 8.11M (6.03%) | 5.66M Increased by +69.73% | Mar 31, 24 |
| 7 | State Street Corp | 6.64M (4.93%) | 274.43K Increased by +4.14% | Dec 31, 25 |
| 8 | UBS Group AG | 3.68M (2.73%) | 2.81M Increased by +76.34% | Mar 31, 26 |
| 9 | Geode Capital Management, LLC | 3.15M (2.34%) | 14.74K Increased by +0.47% | Dec 31, 25 |
| 10 | Citadel Advisors Llc | 2.48M (1.84%) | 2.27M Increased by +91.81% | Dec 31, 25 |
| 11 | Balyasny Asset Management LLC | 1.70M (1.26%) | 1.32M Increased by +77.26% | Mar 31, 25 |
| 12 | Polymer Capital Management (Hk) Ltd | 1.42M (1.06%) | 603.88K Increased by +42.49% | Dec 31, 25 |
| 13 | NORGES BANK | 1.37M (1.02%) | -15.92K Decreased by -1.16% | Dec 31, 25 |
| 14 | Pictet Asset Manangement SA | 1.32M (0.98%) | -60.60K Decreased by -4.58% | Mar 31, 26 |
| 15 | APEIRON CAPITAL Ltd | 1.31M (0.97%) | -100.00 Decreased by -0.01% | Mar 31, 26 |
| 16 | abrdn PLC | 1.29M (0.96%) | 154.14K Increased by +11.94% | Dec 31, 24 |
| 17 | BNP Paribas Arbitrage, SA | 1.10M (0.82%) | 605.30K Increased by +55.10% | Mar 31, 25 |
| 18 | Darwin Global Management, Ltd. | 1.08M (0.81%) | 1.08M Increased by +100.00% | Sep 30, 24 |
| 19 | TD Asset Management Inc | 956.89K (0.71%) | -248.38K Decreased by -25.96% | Mar 31, 26 |
| 20 | Anson Funds Management LP | 941.91K (0.70%) | 941.91K Increased by +100.00% | Jun 30, 24 |
| Rank | Holder | SharesFloat % | Change | Date reported |
|---|---|---|---|---|
| 1 | T. Rowe Price Health Sciences | 6.18M (4.59%) | 291.99K Increased by +4.73% | Mar 31, 26 |
| 2 | State Street® SPDR® S&P® Biotech ETF | 5.44M (4.04%) | -38.65K Decreased by -0.71% | Apr 30, 26 |
| 3 | Vanguard Total Stock Mkt Idx Inv | 3.76M (2.79%) | 209.57K Increased by +5.58% | Mar 31, 26 |
| 4 | Fidelity Growth Compy Commingled Pl S | 3.36M (2.49%) | 178.75K Increased by +5.32% | Mar 31, 26 |
| 5 | Vanguard Small Cap Index | 2.69M (2.00%) | 154.79K Increased by +5.76% | Mar 31, 26 |
| 6 | Fidelity Growth Company Fund | 2.52M (1.87%) | 136.50K Increased by +5.42% | Mar 31, 26 |
| 7 | SPDR® S&P Biotech ETF | 2.43M (1.80%) | 5.41K Increased by +0.22% | Aug 31, 25 |
| 8 | iShares Russell 2000 ETF | 2.31M (1.72%) | 0.00 Increased by 0.00% | May 31, 25 |
| 9 | Vanguard Institutional Extnd Mkt Idx Tr | 1.73M (1.28%) | 98.93K Increased by +5.73% | Mar 31, 26 |
| 10 | Vanguard Small Cap Value Index Inv | 1.71M (1.27%) | 80.27K Increased by +4.70% | Mar 31, 26 |
| 11 | Fidelity® Small Cap Index | 1.12M (0.83%) | 29.95K Increased by +2.69% | Oct 31, 23 |
| 12 | Fidelity Select Biotechnology | 1.09M (0.81%) | 0.00 Increased by 0.00% | Mar 31, 26 |
| 13 | Fidelity Contrafund | 1.04M (0.77%) | 0.00 Increased by 0.00% | Feb 28, 26 |
| 14 | Fidelity Select Health Care | 1.00M (0.74%) | 0.00 Increased by 0.00% | Mar 31, 26 |
| 15 | Polar Capital Biotech S Inc | 1.00M (0.74%) | 0.00 Increased by 0.00% | Jul 31, 25 |
| 16 | Fidelity Small Cap Index | 932.02K (0.69%) | 2.56K Increased by +0.28% | May 31, 25 |
| 17 | BlackRock Health Sciences Opps Inv A | 924.15K (0.69%) | 0.00 Increased by 0.00% | Mar 31, 26 |
| 18 | Fidelity Extended Market Index | 822.39K (0.61%) | 44.88K Increased by +5.46% | Mar 31, 26 |
| 19 | iShares Biotechnology ETF | 794.66K (0.59%) | 11.80K Increased by +1.49% | Apr 30, 26 |
| 20 | iShares Russell Mid-Cap Growth ETF | 772.18K (0.57%) | 0.00 Increased by 0.00% | Apr 30, 26 |