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Disclosery

ATNM ACTINIUM PHARMACEUTICALS INC

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COM (common), issuer CIK 1388320

52 managers (54 13F filers) reported a position in ATNM shares at 2026-03-31, 5,301,059 shares in all. 3 filers opened a position and 12 filers sold out during the quarter.

Managers
52
13F filers
54
New
3
Added
12
Reduced
14
Sold out
12
Shares held by filers
5,301,059

Shares held by filers adds up every 13F filer's report, so a share reported by a parent and by its subsidiary counts twice (H9). Managers counts each filer group once.

13D and 13G filers

No 13D or 13G on this security in the data. Structured 13D/G data starts 2024-12-18.

Insider trades

No Form 4 transaction on this security in the data.

13F holders, Q1 2026

Filers in the available 13F reports with a share position at 2026-03-31, filer groups collapsed to one row (method), largest first. Options and principal amounts are left out. A group row states no % of portfolio, since each member reports its own portfolio: the members' percents are listed under it. A value about 1,000 times or 1/1,000 of the price other filers imply is shown as filed but neither ranks the row nor enters a sum.

HolderSharesValue% of portfolioChangeSource
VANGUARD GROUP INCgroup of 3 filers holding1,424,674$1.42MnewTimeline
ACADIAN ASSET MANAGEMENT LLCin group ACADIAN ASSET MANAGEMENT LLC600,819$596K<0.01%-5,52013F-HRTimelineGroup
MILLENNIUM MANAGEMENT LLCin group MILLENNIUM MANAGEMENT LLC564,600$562K<0.01%-37,00013F-HRTimelineGroup
RENAISSANCE TECHNOLOGIES LLC471,600$469K<0.01%+80,81613F-HRTimeline
BlackRock, Inc.in group BlackRock, Inc.371,210$369K<0.01%+4,27913F-HRTimelineGroup
TWO SIGMA INVESTMENTS, LPin group TWO SIGMA INVESTMENTS, LP337,168$336K<0.01%+127,47613F-HRTimelineGroup
GEODE CAPITAL MANAGEMENT, LLCin group GEODE CAPITAL MANAGEMENT, LLC336,073$335K<0.01%+7,07913F-HRTimelineGroup
GAGNON SECURITIES LLCin group GAGNON SECURITIES LLC201,300$200K0.05%-50713F-HRTimelineGroup
STATE STREET CORPin group STATE STREET CORP126,215$126K<0.01%013F-HRTimelineGroup
SUSQUEHANNA INTERNATIONAL GROUP, LLPin group SUSQUEHANNA INTERNATIONAL GRO…123,998$123K<0.01%+41,52413F-HRTimelineGroup
Gen-Wealth Partners Inc107,111$107K0.03%-2013F-HRTimeline
NORTHERN TRUST CORPin group NORTHERN TRUST CORP75,855$75.5K<0.01%+33,24513F-HRTimelineGroup
GOLDMAN SACHS GROUP INCin group GOLDMAN SACHS GROUP INC70,241$69.9K<0.01%-11713F-HRTimelineGroup
BRIDGEWAY CAPITAL MANAGEMENT, LLC40,000$39.8K<0.01%013F-HRTimeline
TWO SIGMA SECURITIES, LLC35,887$35.7K<0.01%+22,92213F-HRTimeline
NINE MASTS CAPITAL Ltd35,227$35.1K0.01%+22,28713F-HRTimeline
DIMENSIONAL FUND ADVISORS LPin group DIMENSIONAL FUND ADVISORS LP34,923$34.8K<0.01%013F-HRTimelineGroup
JANE STREET GROUP, LLCin group JANE STREET GROUP, LLC34,299$34.1K<0.01%-58,89313F-HRTimelineGroup
XTX Topco Ltdin group XTX Topco Ltd30,210$30.1K<0.01%+4,23413F-HRTimelineGroup
Vontobel Holding Ltd.in group Vontobel Holding Ltd.30,000$29.9K<0.01%013F-HRTimelineGroup
AM INVESTMENT STRATEGIES LLC29,356$29K0.01%013F-HRTimeline
Gerald Baker Financial Group LLC22,691$22.6K0.01%13F-HR/ATimeline
MAYPORT, LLC22,000$21.9K<0.01%013F-HRTimeline
NORTH STAR ASSET MANAGEMENT INC20,000$19.9K<0.01%013F-HRTimeline
OSAIC HOLDINGS, INC.in group OSAIC HOLDINGS, INC.19,865$19.9K<0.01%-40013F-HRTimelineGroup
WELLS FARGO & COMPANY/MNin group WELLS FARGO & COMPANY/MN19,800$19.7K<0.01%013F-HR/ATimelineGroup
Qube Research & Technologies Ltd18,048$18K<0.01%-76413F-HRTimeline
UBS Group AGin group UBS Group AG14,618$14.5K<0.01%+14,52213F-HRTimelineGroup
MORGAN STANLEYin group MORGAN STANLEY13,597$13.5K<0.01%-5,47313F-HRTimelineGroup
Virtu Financial LLCin group Virtu Financial LLC12,324$12K<0.01%new13F-HRTimelineGroup
Callan Family Office, LLCin group Callan Family Office, LLC11,944$11.9K<0.01%-11,65913F-HRTimelineGroup
Intrepid Financial Planning Group LLC10,500$10.5K<0.01%013F-HRTimeline
LEVEL FOUR ADVISORY SERVICES, LLCin group LEVEL FOUR ADVISORY SERVICES,…10,000$9.95K<0.01%013F-HRTimelineGroup
Savvy Advisors, Inc.10,000$9.95K<0.01%013F-HRTimeline
Rockefeller Capital Management L.P.in group Rockefeller Capital Managemen…4,000$3.98K<0.01%013F-HRTimelineGroup
Steward Partners Investment Advisory, L…2,166$2.16K<0.01%013F-HRTimeline
JPMORGAN CHASE & COin group JPMORGAN CHASE & CO1,494$1.48K<0.01%013F-HR/ATimelineGroup
Advisory Services Network, LLC1,460$1.45K<0.01%new13F-HRTimeline
FEDERATED HERMES, INC.in group FEDERATED HERMES, INC.1,403$1.4K<0.01%013F-HRTimelineGroup
NATIONAL BANK OF CANADA /FI/in group NATIONAL BANK OF CANADA /FI/1,021$1K<0.01%+16613F-HRTimelineGroup
CITIGROUP INCin group CITIGROUP INC678$675<0.01%+24713F-HRTimelineGroup
SBI Securities Co., Ltd.542$539<0.01%013F-HRTimeline
JONES FINANCIAL COMPANIES LLLPin group JONES FINANCIAL COMPANIES LLLP351$362<0.01%013F-HRTimelineGroup
CWM, LLCin group CWM, LLC351$349<0.01%-26913F-HRTimelineGroup
PITTENGER & ANDERSON INC341$340<0.01%013F-HRTimeline
NISA INVESTMENT ADVISORS, LLC330$328<0.01%-62813F-HRTimeline
Investors Research Corp300$299<0.01%013F-HRTimeline
BNP PARIBAS FINANCIAL MARKETSin group BNP PARIBAS FINANCIAL MARKETS237$236<0.01%013F-HRTimelineGroup
NORTHWESTERN MUTUAL WEALTH MANAGEMENT COin group NORTHWESTERN MUTUAL INVESTMEN…107$106<0.01%013F-HRTimelineGroup
FMR LLCin group FMR LLC79$79<0.01%-14,29413F-HRTimelineGroup
Caitong International Asset Management …1$1<0.01%new13F-HRTimeline
ROYAL BANK OF CANADAin group ROYAL BANK OF CANADA45$00%-3513F-HRTimelineGroupValue filed as zero, left out of ratios.