Actinium Pharmaceuticals, Inc. (ATNM) ownership: Top institutional holder: VANGUARD GROUP INC ($1.93M). Insider activity: Net Seller (0 buys, 20 sells). SEC EDGAR first-party data.
| Holder | Shares | Market Value | Reported |
|---|---|---|---|
| VANGUARD GROUP INC | 1421038.00 | $1.93M | 2025-12-31 |
| VANGUARD CAPITAL MANAGEMENT LLC | 1255516.00 | $1.25M | 2026-03-31 |
| ACADIAN ASSET MANAGEMENT LLC | 600819.00 | $596000.00 | 2026-03-31 |
| COMPASS FINANCIAL MANAGEMENT LLC | 600230.00 | $588225.00 | 2026-06-30 |
| MILLENNIUM MANAGEMENT LLC | 564600.00 | $561946.00 | 2026-03-31 |
| RENAISSANCE TECHNOLOGIES LLC | 471600.00 | $469383.00 | 2026-03-31 |
| BlackRock, Inc. | 371210.00 | $369466.00 | 2026-03-31 |
| TWO SIGMA INVESTMENTS, LP | 337168.00 | $335583.00 | 2026-03-31 |
| Insider | Transaction | Value | Date |
|---|---|---|---|
| Sell | null | 2025-08-18 | |
| Sell | null | 2025-03-31 | |
| Sell | null | 2025-03-31 | |
| Sell | null | 2025-03-31 | |
| Sell | null | 2025-03-31 | |
| Sell | null | 2025-03-31 | |
| Sell | null | 2025-03-31 | |
| Sell | null | 2025-03-31 |
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Institutional data from SEC Form 13F. Insider data from SEC Form 4. Congressional data from STOCK Act disclosures. Not personalized investment advice.