Aktis Oncology, Inc.
AKTS- Exchange
- Nasdaq
- Industry
- Pharmaceutical Preparations
- SEC CIK
- 0002035832
In the last 90 days, Aktis Oncology, Inc. insiders filed 0 open-market purchases and 5 sales; 113 institutions reported holding it in 13F filings for Q2 2026, worth $1.10B in total; Soros Fund Management is the only superinvestor holding it.
13F holders, Q2 2026
Institutional positions in Aktis Oncology, Inc. as of Jun 30, 2026. Investment managers with $100 million or more in US stocks report their long positions on Form 13F within 45 days after each quarter ends. How 13F works
- Institutional holders
- 113
- +46 vs. Q1 2026
- Shares held
- 34.2M
- +912.5K (+2.7%) vs. Q1 2026
- Total value
- $1.10B
- +$506.3M (+85.1%) vs. Q1 2026
- New holders
- 52
- 28 more added
- Sold out
- 6
- 17 more reduced
2 institutions that held it in Q1 2026 haven't filed for Q2 2026 yet. Not filing isn't selling, so they aren't counted as sold out or in the changes above.
Compare with Q1 2026: new holders, sold out and not filed yet
Holders and value by quarter
Institutions reporting AKTS on Form 13F each quarter since Q1 2021, and the total value they reported. Values are as of each quarter end, so they also move with the share price.
| Quarter | Holders | Value |
|---|---|---|
| Q2 2026 | 113 | $1.10B |
| Q1 2026 | 69 | $621.0M |
| Q4 2025 | 0 | $0 |
| Q3 2025 | 0 | $0 |
| Q2 2025 | 0 | $0 |
| Q1 2025 | 0 | $0 |
| Q4 2024 | 0 | $0 |
| Q3 2024 | 0 | $0 |
| Q2 2024 | 0 | $0 |
| Q1 2024 | 0 | $0 |
| Q4 2023 | 0 | $0 |
| Q3 2023 | 0 | $0 |
| Q2 2023 | 0 | $0 |
| Q1 2023 | 0 | $0 |
| Q4 2022 | 0 | $0 |
| Q3 2022 | 0 | $0 |
| Q2 2022 | 0 | $0 |
| Q1 2022 | 0 | $0 |
| Q4 2021 | 0 | $0 |
| Q3 2021 | 0 | $0 |
| Q2 2021 | 0 | $0 |
| Q1 2021 | 0 | $0 |
Institutions, Q2 2026
Shares, value and share of portfolio for each institution holding Aktis Oncology, Inc.; share changes are against Q1 2026.
| Institution | Shares | Value | % of portfolio | Change in shares | Action |
|---|---|---|---|---|---|
| Vanguard Capital Management LLC | 817,075 | $26.3M | 0.00% | −16,838−2.0% | Reduced |
| Merck & Co., Inc. | 952,844 | $30.7M | 5.83% | 00.0% | Unchanged |
| Octagon Capital Advisors LP | 960,847 | $31.0M | 2.84% | 00.0% | Unchanged |
| Baker Bros. Advisors LP | 996,351 | $32.1M | 0.16% | 00.0% | Unchanged |
| Jupiter Topco LLC | 1,314,267 | $42.4M | 0.02% | +1,314,267 | New |
| Ra Capital Management, L.P. | 1,314,405 | $42.4M | 0.37% | −188,679−12.6% | Reduced |
| RTW Investments, LP | 1,592,043 | $51.3M | 0.44% | 00.0% | Unchanged |
| Wellington Management Group LLP | 1,966,244 | $63.4M | 0.01% | −350,800−15.1% | Reduced |
| T. Rowe Price Investment Management, Inc. | 2,051,447 | $66.1M | 0.04% | −72,365−3.4% | Reduced |
| BlackRock, Inc. | 2,278,358 | $73.4M | 0.00% | +166,231+7.9% | Added |
| Blue Owl Capital Holdings LP | 3,070,219 | $99.0M | 15.04% | −91,129−2.9% | Reduced |
| EcoR1 Capital, LLC | 4,824,469 | $155.5M | 7.71% | 00.0% | Unchanged |
| MPM Oncology Impact Management LP | 4,835,872 | $155.9M | 9.50% | 00.0% | Unchanged |
| Driehaus Capital Management LLC | 0 | $0 | 0.00% | −150,000−100.0% | Sold out |
| Laurion Capital Management LP | 0 | $0 | 0.00% | −100,000−100.0% | Sold out |
| D. E. Shaw & Co., Inc. | 0 | $0 | 0.00% | −17,062−100.0% | Sold out |
| Zimmer Partners, LP | 0 | $0 | 0.00% | −15,000−100.0% | Sold out |
| Universal- Beteiligungs- und Servicegesellschaft mbH | 0 | $0 | 0.00% | −14,185−100.0% | Sold out |
| XTX Topco Ltd | 0 | $0 | 0.00% | −13,990−100.0% | Sold out |
| Janus Henderson Group PLC | – | – | – | – | Not filed |
| CWM, LLC | – | – | – | – | Not filed |