Actinium Pharmaceuticals, Inc. (ATNM) — Institutional Holders, Q2 2026
47 institutional investment managers reported a ATNM position on SEC Form 13F-HR for the quarter ended June 30, 2026, with a combined reported value of $5.2M. Every filer is listed below, ranked by position value. Put and call option positions are excluded, and a firm filing several lots or share classes is shown once with its total.
ATNM in Q2 2026: what funds did
Funds that filed a 13F for both Q1 2026 and Q2 2026, by what they did with the common stock. Share counts are adjusted for any split between the two quarters; dollar figures are the change in shares at this quarter’s price.
Biggest buyers
- SNS Financial GroupNew · +43,000 sh+$42.1K
- Qube Research & Technologies LtdAdded · +39,764 sh+$39.0K
- BlackRockAdded · +24,686 sh+$24.2K
- Vontobel Holding Ltd.Added · +20,000 sh+$19.6K
- NORTHWESTERN MUTUAL WEALTH MANAGEMENTAdded · +1,550 sh+$1.5K
Biggest sellers
- ACADIAN ASSET MANAGEMENTTrimmed · -104,531 sh-$102.4K
- RENAISSANCE TECHNOLOGIESTrimmed · -91,109 sh-$89.3K
- TWO SIGMA INVESTMENTSTrimmed · -77,989 sh-$76.4K
- GOLDMAN SACHS GROUPSold out · -70,241 sh-$68.8K
- SUSQUEHANNA INTERNATIONAL GROUP, LLPTrimmed · -67,176 sh-$65.8K
ATNM 13F holders ranked 1–47 of 47
| # | Institution | Shares | Value | % of portfolio | QoQShares vs Q1 2026 |
|---|---|---|---|---|---|
| 1 | VANGUARD CAPITAL MANAGEMENT#1 · 1,238,302 sh | 1,238,302 | $1.2M | 0.00% | -1.4% |
| 2 | COMPASS FINANCIAL MANAGEMENT#2 · 600,230 sh | 600,230 | $588.2K | 0.07% | — |
| 3 | MILLENNIUM MANAGEMENT#3 · 514,580 sh | 514,580 | $504.3K | <0.01% | -8.9% |
| 4 | ACADIAN ASSET MANAGEMENT#4 · 496,288 sh | 496,288 | $485.0K | <0.01% | -17.4% |
| 5 | BlackRock#5 · 395,896 sh | 395,896 | $388.0K | 0.00% | +6.7% |
| 6 | RENAISSANCE TECHNOLOGIES#6 · 380,491 sh | 380,491 | $372.9K | <0.01% | -19.3% |
| 7 | GEODE CAPITAL MANAGEMENT#7 · 324,945 sh | 324,945 | $318.6K | 0.00% | -3.3% |
| 8 | TWO SIGMA INVESTMENTS#8 · 259,179 sh | 259,179 | $254.0K | <0.01% | -23.1% |
| 9 | GAGNON SECURITIES#9 · 182,142 sh | 182,142 | $178.5K | 0.03% | -9.5% |
| 10 | VANGUARD FIDUCIARY#10 · 161,526 sh | 161,526 | $158.3K | 0.00% | +0.8% |
| 11 | STATE STREET#11 · 122,215 sh | 122,215 | $119.8K | 0.00% | -3.2% |
| 12 | Gen-Wealth Partners#12 · 105,111 sh | 105,111 | $103.0K | 0.03% | -1.9% |
| 13 | NORTHERN#13 · 69,743 sh | 69,743 | $68.3K | 0.00% | -8.1% |
| 14 | Qube Research & Technologies Ltd#14 · 57,812 sh | 57,812 | $56.7K | <0.01% | +220.3% |
| 15 | SUSQUEHANNA INTERNATIONAL GROUP, LLP#15 · 56,822 sh | 56,822 | $55.7K | 0.00% | -54.2% |
| 16 | Vontobel Holding Ltd.#16 · 50,000 sh | 50,000 | $49.0K | — | +66.7% |
| 17 | SNS Financial Group#17 · 43,000 sh | 43,000 | $42.1K | <0.01% | New |
| 18 | BRIDGEWAY CAPITAL MANAGEMENT#18 · 40,000 sh | 40,000 | $39.2K | <0.01% | 0.0% |
| 19 | AM INVESTMENT STRATEGIES#19 · 29,356 sh | 29,356 | $29.0K | <0.01% | 0.0% |
| 20 | Gerald Baker Financial Group#20 · 22,691 sh | 22,691 | $22.2K | — | 0.0% |
| 21 | MAYPORT#21 · 22,000 sh | 22,000 | $21.6K | <0.01% | 0.0% |
| 22 | NORTH STAR ASSET MANAGEMENT#22 · 20,000 sh | 20,000 | $19.6K | <0.01% | 0.0% |
| 23 | WELLS FARGO & COMPANY#23 · 19,800 sh | 19,800 | $19.4K | 0.00% | 0.0% |
| 24 | OSAIC#24 · 18,865 sh | 18,865 | $18.5K | 0.00% | -5.0% |
| 25 | XTX Topco Ltd#25 · 13,731 sh | 13,731 | $13.5K | <0.01% | -54.5% |
| 26 | Savvy Advisors#26 · 10,000 sh | 10,000 | $9.8K | <0.01% | 0.0% |
| 27 | Vanguard Global Advisers#27 · 8,893 sh | 8,893 | $8.7K | 0.00% | 0.0% |
| 28 | UBS Group AG#28 · 6,758 sh | 6,758 | $6.6K | 0.00% | -53.8% |
| 29 | MORGAN STANLEY#29 · 6,341 sh | 6,341 | $6.2K | 0.00% | -53.4% |
| 30 | Rockefeller Capital Management L.P.#30 · 4,000 sh | 4,000 | $3.9K | 0.00% | 0.0% |
| 31 | Steward Partners Investment Advisory#31 · 2,000 sh | 2,000 | $2.0K | 0.00% | -7.7% |
| 32 | NORTHWESTERN MUTUAL WEALTH MANAGEMENT#32 · 1,657 sh | 1,657 | $1.6K | 0.00% | +1448.6% |
| 33 | JPMORGAN CHASE#33 · 1,494 sh | 1,494 | $1.5K | 0.00% | 0.0% |
| 34 | JONES FINANCIAL COMPANIES LLLP#34 · 1,351 sh | 1,351 | $1.3K | 0.00% | +284.9% |
| 35 | NATIONAL BANK OF CANADA#35 · 921 sh | 921 | $903.00 | 0.00% | -9.8% |
| 36 | SBI Securities , Ltd.#36 · 492 sh | 492 | $482.00 | — | -9.2% |
| 37 | PITTENGER & ANDERSON#37 · 341 sh | 341 | $335.00 | 0.00% | 0.0% |
| 38 | HARBOUR INVESTMENTS#38 · 334 sh | 334 | $327.00 | 0.00% | New |
| 39 | NISA INVESTMENT ADVISORS#39 · 330 sh | 330 | $323.00 | — | 0.0% |
| 40 | Investors Research#40 · 300 sh | 300 | $294.00 | — | 0.0% |
| 41 | Allied Private Wealth#41 · 240 sh | 240 | $232.00 | <0.01% | — |
| 42 | BARCLAYS PLC#42 · 203 sh | 203 | $199.00 | 0.00% | New |
| 43 | BNP PARIBAS FINANCIAL MARKETS#43 · 201 sh | 201 | $197.00 | 0.00% | -15.2% |
| 44 | FEDERATED HERMES#44 · 137 sh | 137 | $134.00 | 0.00% | -90.2% |
| 45 | Axiom Investment Management#45 · 5 sh | 5 | $5.00 | 0.00% | New |
| 46 | Caitong International Asset Management , Ltd#46 · 1 sh | 1 | $1.00 | 0.00% | 0.0% |
| 47 | ROYAL BANK OF CANADA#47 · 45 sh | 45 | $0.00 | 0.00% | 0.0% |
Funds that sold out of ATNM in Q2 2026 (12)
Held ATNM at the end of Q1 2026 and filed a Q2 2026 13F without it. Not in the list above, because they no longer hold it. Largest prior position first.
| Institution | Shares sold | Value in Q1 2026 |
|---|---|---|
| GOLDMAN SACHS GROUP70,241 sh | 70,241 | $69.9K |
| TWO SIGMA SECURITIES35,887 sh | 35,887 | $35.7K |
| NINE MASTS CAPITAL Ltd35,227 sh | 35,227 | $35.1K |
| DIMENSIONAL FUND ADVISORS34,923 sh | 34,923 | $34.8K |
| JANE STREET GROUP34,299 sh | 34,299 | $34.1K |
| Virtu Financial12,324 sh | 12,324 | $12.0K |
| Callan Family Office11,944 sh | 11,944 | $11.9K |
| Intrepid Financial Planning Group10,500 sh | 10,500 | $10.5K |
| LEVEL FOUR ADVISORY SERVICES10,000 sh | 10,000 | $10.0K |
| Advisory Services Network1,460 sh | 1,460 | $1.5K |
| CITIGROUP678 sh | 678 | $675.00 |
| FMR79 sh | 79 | $79.00 |
Source: Form 13F-HR filings on SEC EDGAR, Q2 2026. Values are as reported by each manager at quarter end. “% of portfolio” is the position’s share of the manager’s total reported 13F value for the same quarter. “New” means the manager filed a 13F for Q1 2026 without this position; a dash means no comparison is available. Where a manager’s own filing is internally inconsistent its value is withheld and it is listed last. 13F data shows reported holdings, not recommendations.