ATNM Actinium Pharmaceuticals, Inc.
Actinium Pharmaceuticals, Inc. (ATNM) Institutional Ownership
What the institutions did with ATNM last quarter, from their 13F filings. Counting managers rather than shares is the point: a single index fund adding to a position tells you far less than four hundred separate managers all deciding to. Positions as reported for the quarter ended June 30, 2026.
Every manager below opens. Subscribers can see any firm's whole portfolio — every position, its weight, and what they bought, trimmed and exited last quarter.
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Each block is one manager, sized by shares held and colored by how much they moved the position last quarter. Green added, red cut, grey stood pat.
Largest holders
| Manager | Shares | % of reported |
|---|---|---|
| VANGUARD CAPITAL MANAGEMENT LLC | 1.2M | 23.4% |
| COMPASS FINANCIAL MANAGEMENT LLC | 600.2K | 11.3% |
| MILLENNIUM MANAGEMENT LLC | 514.6K | 9.7% |
| ACADIAN ASSET MANAGEMENT LLC | 496.3K | 9.4% |
| BlackRock, Inc. | 395.9K | 7.5% |
| RENAISSANCE TECHNOLOGIES LLC | 380.5K | 7.2% |
| GEODE CAPITAL MANAGEMENT, LLC | 324.9K | 6.1% |
| TWO SIGMA INVESTMENTS, LP | 259.2K | 4.9% |
| GAGNON SECURITIES LLC | 182.1K | 3.4% |
| VANGUARD FIDUCIARY TRUST CO | 161.5K | 3.1% |
| STATE STREET CORP | 122.2K | 2.3% |
| Gen-Wealth Partners Inc | 105.1K | 2.0% |
| NORTHERN TRUST CORP | 69.7K | 1.3% |
| Qube Research & Technologies Ltd | 57.8K | 1.1% |
| SUSQUEHANNA INTERNATIONAL GROUP, LLP | 56.8K | 1.1% |
| Vontobel Holding Ltd. | 50.0K | 0.9% |
| SNS Financial Group, LLC | 43.0K | 0.8% |
| BRIDGEWAY CAPITAL MANAGEMENT, LLC | 40.0K | 0.8% |
| AM INVESTMENT STRATEGIES LLC | 29.4K | 0.6% |
| Gerald Baker Financial Group LLC | 22.7K | 0.4% |
| MAYPORT, LLC | 22.0K | 0.4% |
| NORTH STAR ASSET MANAGEMENT INC | 20.0K | 0.4% |
| WELLS FARGO & COMPANY/MN | 19.8K | 0.4% |
| OSAIC HOLDINGS, INC. | 18.9K | 0.4% |
| XTX Topco Ltd | 13.7K | 0.3% |
Largest changes
| Manager | Action | Previous | Current | Change |
|---|---|---|---|---|
| ACADIAN ASSET MANAGEMENT LLC | Reduced | 600.8K | 496.3K | -104.5K |
| RENAISSANCE TECHNOLOGIES LLC | Reduced | 471.6K | 380.5K | -91.1K |
| TWO SIGMA INVESTMENTS, LP | Reduced | 337.2K | 259.2K | -78.0K |
| GOLDMAN SACHS GROUP INC | Sold Out | 70.2K | 0 | -70.2K |
| SUSQUEHANNA INTERNATIONAL GROUP, LLP | Reduced | 124.0K | 56.8K | -67.2K |
| MILLENNIUM MANAGEMENT LLC | Reduced | 564.6K | 514.6K | -50.0K |
| SNS Financial Group, LLC | New | 0 | 43.0K | +43.0K |
| Qube Research & Technologies Ltd | Increased | 18.0K | 57.8K | +39.8K |
| TWO SIGMA SECURITIES, LLC | Sold Out | 35.9K | 0 | -35.9K |
| NINE MASTS CAPITAL Ltd | Sold Out | 35.2K | 0 | -35.2K |
| DIMENSIONAL FUND ADVISORS LP | Sold Out | 34.9K | 0 | -34.9K |
| JANE STREET GROUP, LLC | Sold Out | 34.3K | 0 | -34.3K |
| BlackRock, Inc. | Increased | 371.2K | 395.9K | +24.7K |
| Vontobel Holding Ltd. | Increased | 30.0K | 50.0K | +20.0K |
| GAGNON SECURITIES LLC | Reduced | 201.3K | 182.1K | -19.2K |
| VANGUARD CAPITAL MANAGEMENT LLC | Reduced | 1.3M | 1.2M | -17.2K |
| XTX Topco Ltd | Reduced | 30.2K | 13.7K | -16.5K |
| Virtu Financial LLC | Sold Out | 12.3K | 0 | -12.3K |
| Callan Family Office, LLC | Sold Out | 11.9K | 0 | -11.9K |
| GEODE CAPITAL MANAGEMENT, LLC | Reduced | 336.1K | 324.9K | -11.1K |
| Intrepid Financial Planning Group LLC | Sold Out | 10.5K | 0 | -10.5K |
| LEVEL FOUR ADVISORY SERVICES, LLC | Sold Out | 10.0K | 0 | -10.0K |
| UBS Group AG | Reduced | 14.6K | 6.8K | -7.9K |
| MORGAN STANLEY | Reduced | 13.6K | 6.3K | -7.3K |
| NORTHERN TRUST CORP | Reduced | 75.9K | 69.7K | -6.1K |
| STATE STREET CORP | Reduced | 126.2K | 122.2K | -4.0K |
| Gen-Wealth Partners Inc | Reduced | 107.1K | 105.1K | -2.0K |
| NORTHWESTERN MUTUAL WEALTH MANAGEMENT CO | Increased | 107 | 1.7K | +1.6K |
| Advisory Services Network, LLC | Sold Out | 1.5K | 0 | -1.5K |
| FEDERATED HERMES, INC. | Reduced | 1.4K | 137 | -1.3K |
| VANGUARD FIDUCIARY TRUST CO | Increased | 160.3K | 161.5K | +1.3K |
| JONES FINANCIAL COMPANIES LLLP | Increased | 351 | 1.4K | +1.0K |
| OSAIC HOLDINGS, INC. | Reduced | 19.9K | 18.9K | -1.0K |
| CITIGROUP INC | Sold Out | 678 | 0 | -678 |
| HARBOUR INVESTMENTS, INC. | New | 0 | 334 | +334 |
| BARCLAYS PLC | New | 0 | 203 | +203 |
| Steward Partners Investment Advisory, LLC | Reduced | 2.2K | 2.0K | -166 |
| NATIONAL BANK OF CANADA /FI/ | Reduced | 1.0K | 921 | -100 |
| FMR LLC | Sold Out | 79 | 0 | -79 |
| SBI Securities Co., Ltd. | Reduced | 542 | 492 | -50 |
| BNP PARIBAS FINANCIAL MARKETS | Reduced | 237 | 201 | -36 |
| Axiom Investment Management LLC | New | 0 | 5 | +5 |
13F filings are due 45 days after quarter end and cover long positions in U.S.-listed equities only, so this is a lagged and partial picture: shorts, bonds and foreign listings never appear. Options positions are excluded here rather than folded into the share counts. Political ownership is coming.