| Rank | Holder | SharesFloat % | Change | Date reported |
|---|---|---|---|---|
| 1 | BlackRock Inc | 18.00M (13.98%) | 1.67M Increased by +9.27% | Mar 31, 26 |
| 2 | ARCH VENTURE CORP | 12.92M (10.03%) | 0.00 Increased by 0.00% | Mar 31, 26 |
| 3 | Vanguard Group Inc | 12.55M (9.75%) | -250.44K Decreased by -2.00% | Dec 31, 25 |
| 4 | SB INVESTMENT ADVISERS (UK) LTD | 10.95M (8.50%) | -2.17M Decreased by -19.81% | Mar 31, 26 |
| 5 | Vanguard Portfolio Management, LLC | 9.22M (7.16%) | 9.22M Increased by +100.00% | Mar 31, 26 |
| 6 | GSK PLC | 8.55M (6.64%) | 0.00 Increased by 0.00% | Mar 31, 26 |
| 7 | State Street Corp | 7.14M (5.55%) | 911.54K Increased by +12.76% | Mar 31, 26 |
| 8 | State Street Corporation | 7.07M (5.49%) | 155.54K Increased by +2.20% | Mar 31, 24 |
| 9 | Vanguard Capital Management, LLC | 5.38M (4.18%) | 5.38M Increased by +100.00% | Mar 31, 26 |
| 10 | The Goldman Sachs Group Inc | 3.25M (2.52%) | 1.68M Increased by +51.73% | Mar 31, 26 |
| 11 | Morgan Stanley - Brokerage Accounts | 2.85M (2.22%) | 175.06K Increased by +6.13% | Mar 31, 26 |
| 12 | AllianceBernstein L.P. | 2.78M (2.16%) | -116.69K Decreased by -4.20% | Dec 31, 23 |
| 13 | ADAR1 Capital Management LLC | 2.74M (2.13%) | 2.74M Increased by +100.00% | Mar 31, 26 |
| 14 | Geode Capital Management, LLC | 2.66M (2.06%) | 329.64K Increased by +12.40% | Mar 31, 26 |
| 15 | Dimensional Fund Advisors, Inc. | 2.58M (2.00%) | 43.40K Increased by +1.68% | Mar 31, 26 |
| 16 | Baillie Gifford & Co Limited. | 2.38M (1.85%) | -1.54M Decreased by -64.55% | Sep 30, 24 |
| 17 | Orbimed Advisors, LLC | 2.38M (1.85%) | 0.00 Increased by 0.00% | Dec 31, 25 |
| 18 | Citadel Advisors Llc | 2.10M (1.63%) | 1.61M Increased by +76.69% | Mar 31, 26 |
| 19 | FMR Inc | 2.07M (1.61%) | -1.09M Decreased by -52.44% | Mar 31, 26 |
| 20 | Soleus Capital Management, L.P. | 2.00M (1.55%) | 2.00M Increased by +100.00% | Mar 31, 26 |
| Rank | Holder | SharesFloat % | Change | Date reported |
|---|---|---|---|---|
| 1 | iShares Core S&P Small-Cap ETF | 6.85M (5.32%) | 2.88K Increased by +0.04% | May 29, 26 |
| 2 | Vanguard Total Stock Mkt Idx Inv | 3.98M (3.09%) | 0.00 Increased by 0.00% | Apr 30, 26 |
| 3 | Vanguard US Total Market Shares ETF | 3.46M (2.69%) | 0.00 Increased by 0.00% | Sep 30, 24 |
| 4 | Vanguard Small Cap Index | 2.89M (2.25%) | -10.38K Decreased by -0.36% | Apr 30, 26 |
| 5 | State Street® SPDR® S&P® Biotech ETF | 2.80M (2.17%) | -17.20K Decreased by -0.61% | May 31, 26 |
| 6 | Scottish Mortgage Ord | 2.36M (1.83%) | -1.27M Decreased by -53.83% | Sep 30, 24 |
| 7 | iShares Russell 2000 ETF | 2.23M (1.73%) | 20.64K Increased by +0.92% | May 29, 26 |
| 8 | FIAM Small Cap Core Composite | 1.78M (1.38%) | -28.80K Decreased by -1.62% | Dec 31, 25 |
| 9 | Vanguard Small Cap Growth Index Inv | 1.62M (1.26%) | -1.26K Decreased by -0.08% | Apr 30, 26 |
| 10 | SPDR® S&P Biotech ETF | 1.61M (1.25%) | 3.59K Increased by +0.22% | Aug 31, 25 |
| 11 | Vanguard Strategic Equity Inv | 1.29M (1.01%) | 551.95K Increased by +42.62% | Mar 31, 26 |
| 12 | FIAM Small Cap Core CIT Cl B | 1.29M (1.00%) | 0.00 Increased by 0.00% | Mar 31, 26 |
| 13 | Vanguard Institutional Extnd Mkt Idx Tr | 1.27M (0.99%) | 6.92K Increased by +0.54% | Apr 30, 26 |
| 14 | State Street SPDR Port S&P 600 Sm CpETF | 1.04M (0.80%) | 0.00 Increased by 0.00% | May 29, 26 |
| 15 | iShares Biotechnology ETF | 968.13K (0.75%) | 178.17K Increased by +18.40% | May 29, 26 |
| 16 | Pictet-Biotech P USD | 959.80K (0.75%) | 959.80K Increased by +100.00% | Feb 28, 26 |
| 17 | Biotech Growth Ord | 943.70K (0.73%) | 0.00 Increased by 0.00% | Jan 31, 26 |
| 18 | Fidelity Small Cap Index | 916.35K (0.71%) | 43.25K Increased by +4.72% | Mar 31, 26 |
| 19 | Nuveen Quant Small Cap Equity R6 | 909.98K (0.71%) | 154.30K Increased by +16.96% | Apr 30, 26 |
| 20 | AB Small Cap Growth A | 876.34K (0.68%) | -13.54K Decreased by -1.54% | Dec 31, 23 |