Who owns Actinium Pharmaceuticals, Inc.?
Prices and market caps: Cboe delayed data, at least 15 minutes delayed. Not real-time. Fundamentals from company filings.
Institutional ownership of ATNM from SEC Form 13F filings across 47 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.
As of the 2026-06-30 reporting period, 47 institutions disclosed 5.3M shares of Actinium Pharmaceuticals, Inc. worth $5.2M — about 16.9% of shares outstanding; the largest disclosed holder is VANGUARD CAPITAL MANAGEMENT LLC. Source: SEC Form 13F filings, parsed by EvidInvest.
47
13F holders
$5.2M
value, 2026 filers
16.9%
of shares outstanding (5.3M sh)
6
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 ATNM's shares outstanding
| # | Manager | Shares | Value | % of fund | % of co. | Δ shares QoQ |
|---|---|---|---|---|---|---|
| 1 | VANGUARD CAPITAL MANAGEMENT LLC | 1.2M | $1.2M | 0.0% | 3.9% | -1.4% |
| 2 | COMPASS FINANCIAL MANAGEMENT LLCNEW | 600,230 | $588,225 | 0.1% | 1.9% | new |
| 3 | MILLENNIUM MANAGEMENT LLC | 514,580 | $504,288 | 0.0% | 1.6% | -8.9% |
| 4 | ACADIAN ASSET MANAGEMENT LLC | 496,288 | $485,000 | 0.0% | 1.6% | -17.4% |
| 5 | BlackRock, Inc. | 395,896 | $387,978 | 0.0% | 1.3% | +6.7% |
| 6 | RENAISSANCE TECHNOLOGIES LLC | 380,491 | $372,881 | 0.0% | 1.2% | -19.3% |
| 7 | GEODE CAPITAL MANAGEMENT, LLC | 324,945 | $318,553 | 0.0% | 1% | -3.3% |
| 8 | TWO SIGMA INVESTMENTS, LP | 259,179 | $253,995 | 0.0% | 0.8% | -23.1% |
| 9 | GAGNON SECURITIES LLC | 182,142 | $178,499 | 0.0% | 0.6% | -9.5% |
| 10 | VANGUARD FIDUCIARY TRUST CO | 161,526 | $158,295 | 0.0% | 0.5% | +0.8% |
| 11 | STATE STREET CORP | 122,215 | $119,771 | 0.0% | 0.4% | -3.2% |
| 12 | Gen-Wealth Partners Inc | 105,111 | $103,009 | 0.0% | 0.3% | -1.9% |
| 13 | NORTHERN TRUST CORP | 69,743 | $68,348 | 0.0% | 0.2% | -8.1% |
| 14 | Qube Research & Technologies Ltd | 57,812 | $56,656 | 0.0% | 0.2% | +220.3% |
| 15 | SUSQUEHANNA INTERNATIONAL GROUP, LLP | 56,822 | $55,685 | 0.0% | 0.2% | -54.2% |
| 16 | Vontobel Holding Ltd. | 50,000 | $49,000 | 0.0% | 0.2% | +66.7% |
| 17 | Bluespring Wealth Management, LLCNEW | 43,000 | $42,140 | 0.0% | 0.1% | new |
| 18 | BRIDGEWAY CAPITAL MANAGEMENT, LLC | 40,000 | $39,200 | 0.0% | 0.1% | 0.0% |
| 19 | AM INVESTMENT STRATEGIES LLC | 29,356 | $29,000 | 0.0% | 0.1% | 0.0% |
| 20 | Gerald Baker Financial Group LLC | 22,691 | $22,237 | 0.0% | 0.1% | 0.0% |
| 21 | MAYPORT, LLC | 22,000 | $21,560 | 0.0% | 0.1% | 0.0% |
| 22 | NORTH STAR ASSET MANAGEMENT INC | 20,000 | $19,600 | 0.0% | 0.1% | 0.0% |
| 23 | WELLS FARGO & COMPANY/MN | 19,800 | $19,404 | 0.0% | 0.1% | 0.0% |
| 24 | OSAIC HOLDINGS, INC. | 18,865 | $18,487 | 0.0% | 0.1% | -5.0% |
| 25 | XTX Topco Ltd | 13,731 | $13,456 | 0.0% | 0% | -54.5% |
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.