Who owns Aktis Oncology, Inc.?
Institutional ownership of AKTS from SEC Form 13F filings across 88 reporting managers. All positions are from one synchronized reporting period — 2026-06-30 books, filed up to 45 days after quarter end — so every row is comparable.
88
13F holders
$439.7M
value, 2026 filers
27%
of shares outstanding (14.4M sh)
41
new positions (2026 filers)
Top institutional holders
ordered by shares owned · positions as of 2026-06-30· % of fund = share of the manager's own book · % of co. = share of AKTS's shares outstanding
| # | Manager | Shares | Value | % of fund | % of co. | Δ shares QoQ |
|---|---|---|---|---|---|---|
| 1 | Blue Owl Capital Holdings LP | 3.1M | $99.0M | 14.9% | 5.7% | -2.9% |
| 2 | BlackRock, Inc. | 2.3M | $73.4M | 0.0% | 4.3% | +7.9% |
| 3 | WELLINGTON MANAGEMENT GROUP LLP | 2.0M | $63.4M | 0.0% | 3.7% | -15.1% |
| 4 | Jupiter Topco LLCNEW | 1.3M | $42.4M | 0.0% | 2.5% | new |
| 5 | VANGUARD CAPITAL MANAGEMENT LLC | 817,075 | $26.3M | 0.0% | 1.5% | -51.0% |
| 6 | PRICE T ROWE ASSOCIATES INC /MD/ | 763,499 | $24,608 | 0.0% | 1.4% | -51.2% |
| 7 | TCG Crossover Management, LLCNEW | 696,560 | $22.5M | 0.5% | 1.3% | new |
| 8 | GEODE CAPITAL MANAGEMENT, LLC | 520,737 | $16.8M | 0.0% | 1% | +5.9% |
| 9 | a16z Capital Management, L.L.C. | 415,000 | $13.4M | 0.1% | 0.8% | 0.0% |
| 10 | FMR LLC | 285,631 | $9.2M | 0.0% | 0.5% | -26.1% |
| 11 | NORTHERN TRUST CORP | 180,575 | $5.8M | 0.0% | 0.3% | +20.8% |
| 12 | Sixth Street Partners Management Company, L.P.NEW | 166,842 | $5.4M | 0.9% | 0.3% | new |
| 13 | CHARLES SCHWAB INVESTMENT MANAGEMENT INC | 166,842 | $5.4M | 0.0% | 0.3% | +3.0% |
| 14 | BARCLAYS PLC | 151,696 | $4.9M | 0.0% | 0.3% | +1460.0% |
| 15 | VANGUARD PORTFOLIO MANAGEMENT LLC | 145,220 | $4.7M | 0.0% | 0.3% | +20.7% |
| 16 | VANGUARD FIDUCIARY TRUST CO | 133,834 | $4.3M | 0.0% | 0.3% | +5.1% |
| 17 | TD Asset Management Inc | 105,902 | $3.4M | 0.0% | 0.2% | +4.9% |
| 18 | Woodline Partners LP | 100,000 | $3.2M | 0.0% | 0.2% | -50.0% |
| 19 | UBS Group AG | 99,960 | $3.2M | 0.0% | 0.2% | -71.7% |
| 20 | BANK OF AMERICA CORP /DE/ | 72,835 | $2.3M | 0.0% | 0.1% | +4.2% |
| 21 | POLEN CAPITAL MANAGEMENT LLCNEW | 63,514 | $2.0M | 0.0% | 0.1% | new |
| 22 | MORGAN STANLEY | 62,636 | $2.0M | 0.0% | 0.1% | +103.9% |
| 23 | Tidal Investments LLCNEW | 57,059 | $1.8M | 0.0% | 0.1% | new |
| 24 | RAYMOND JAMES FINANCIAL INCNEW | 50,464 | $1.6M | 0.0% | 0.1% | new |
| 25 | Nuveen, LLC | 49,816 | $1.6M | 0.0% | 0.1% | +103.6% |
Source: SEC Form 13F-HR filings (institutional managers over $100M in US-listed positions). 13Fs disclose long positions only, up to 45 days after quarter end; each manager's latest filed quarter is shown per row and dollar values are the manager's filed marks. Aggregates labeled "2026 filers" count only managers whose latest book is a 2026 quarter. Related: valuation · options positioning · supply chain. Research, not investment advice.