Who Owns AKTIS ONCOLOGY INC (AKTS)? -- Institutional Holders (2026-06-30)
117 institutions reported holding $1.11B of AKTIS ONCOLOGY INC (AKTS) in SEC 13F filings for 2026-06-30. Largest institutional holders: MPM BIOIMPACT LLC ($155.9M), EcoR1 Capital, LLC ($155.5M), Blue Owl Capital Holdings LP ($99.0M), BlackRock, Inc. ($73.4M), T. Rowe Price Investment Management, Inc. ($66.1M). Source: SEC Form 13F.
| Rank | Institution | Value | Shares | Change |
|---|
| 1 | MPM BIOIMPACT LLC | $155.9M | 4.8M | Hold |
| 2 | EcoR1 Capital, LLC | $155.5M | 4.8M | Hold |
| 3 | Blue Owl Capital Holdings LP | $99.0M | 3.1M | Trimmed |
| 4 | BlackRock, Inc. | $73.4M | 2.3M | Added |
| 5 | T. Rowe Price Investment Management, Inc. | $66.1M | 2.1M | Trimmed |
| 6 | WELLINGTON MANAGEMENT GROUP LLP | $63.4M | 2.0M | Trimmed |
| 7 | RTW INVESTMENTS, LP | $51.3M | 1.6M | Hold |
| 8 | RA CAPITAL MANAGEMENT, L.P. | $42.4M | 1.3M | Trimmed |
| 9 | Jupiter Topco LLC | $42.4M | 1.3M | New |
| 10 | VANGUARD GROUP INC | $35.6M | 1.1M | Added |
| 11 | BAKER BROS. ADVISORS LP | $32.1M | 996,351 | Hold |
| 12 | Octagon Capital Advisors LP | $31.0M | 960,847 | Hold |
| 13 | Merck & Co., Inc. | $30.7M | 952,844 | Hold |
| 14 | PRICE T ROWE ASSOCIATES INC /MD/ | $24.6M | 763,499 | Trimmed |
| 15 | TCG Crossover Management, LLC | $22.5M | 696,560 | New |
| 16 | GEODE CAPITAL MANAGEMENT, LLC | $16.8M | 520,737 | Added |
| 17 | EVENTIDE ASSET MANAGEMENT, LLC | $16.3M | 507,000 | Hold |
| 18 | Avidity Partners Management LP | $15.6M | 484,200 | Added |
| 19 | STATE STREET CORP | $15.6M | 484,010 | Added |
| 20 | a16z Capital Management, L.L.C. | $13.4M | 415,000 | Hold |
| 21 | Alyeska Investment Group, L.P. | $9.3M | 290,000 | Hold |
| 22 | FMR LLC | $9.2M | 285,631 | Trimmed |
| 23 | ArrowMark Colorado Holdings LLC | $7.9M | 245,872 | Trimmed |
| 24 | NORTHERN TRUST CORP | $5.8M | 180,575 | Added |
| 25 | CHARLES SCHWAB INVESTMENT MANAGEMENT INC | $5.4M | 166,842 | Added |
Source: SEC Form 13F filings · as of 2026-06-30