ACTINIUM PHARMACEUTICALS INC (ATNM) Institutional Ownership Changes & 13F Activity

ACTINIUM PHARMACEUTICALS INC (ATNM). Institutional ownership data tracks hedge funds, asset managers, and other institutional investors based on recent SEC Form 13F filings (Q4 2025). This page analyzes institutional buying and selling activity, new holdings, and sold-out positions in the latest reporting period. Notable filers include Millennium Management Llc, Two Sigma Investments, Lp, Gagnon Securities Llc, Two Sigma Advisers, Lp, and State Street Corp.

InstitutionTypeChange in sharesChange Position %SharesReported stock balancePortfolio quarterFiling date
Millennium Management LlcBuy+601,600—601,600$818.18KQ4 2025Feb 17, 2026
Two Sigma Investments, LpBuy+209,692—209,692$285.18KQ4 2025Feb 17, 2026
Two Sigma Advisers, LpBuy+196,076—196,076$266.66KQ4 2025Feb 17, 2026
Susquehanna International Group, LlpBuy+82,474—82,474$112.17KQ4 2025Feb 17, 2026
Northern Trust CorpBuy+42,610—42,610$57.95KQ4 2025Feb 17, 2026
Bridgeway Capital Management, LlcBuy+40,000—40,000$54.40KQ4 2025Feb 17, 2026
Xtx Topco LtdBuy+25,976—25,976$35.33KQ4 2025Feb 17, 2026
Osaic Holdings, Inc.Buy+20,265—20,265$27.56KQ4 2025Feb 17, 2026
Qube Research & Technologies LtdBuy+18,812—18,812$25.58KQ4 2025Feb 17, 2026
Cetera Investment AdvisersBuy+15,259—15,259$20.75KQ4 2025Feb 17, 2026
Fmr LlcBuy+14,373—14,373$19.55KQ4 2025Feb 17, 2026
Russell Investments Group, Ltd.Buy+13,340—13,340$18.14KQ4 2025Feb 17, 2026
Two Sigma Securities, LlcBuy+12,965—12,965$17.63KQ4 2025Feb 17, 2026
Point72 Asset Management, L.P.Buy+10,295—10,295$14.00KQ4 2025Feb 17, 2026
Rockefeller Capital Management L.P.Buy+4,000—4,000$5.44KQ4 2025Feb 17, 2026
National Bank Of CanadaBuy+855—855$1.16KQ4 2025Feb 17, 2026
Bank Of America CorpBuy+649—649$882.00Q4 2025Feb 17, 2026
Jones Financial Companies LllpBuy+351—351$477.00Q4 2025Feb 17, 2026
Royal Bank Of CanadaBuy+80—80$0.00Q4 2025Feb 17, 2026
Gagnon Securities LlcBuy+201,807—201,807$274.46KQ4 2025Feb 13, 2026
State Street CorpBuy+126,215—126,215$171.65KQ4 2025Feb 13, 2026
Gen-Wealth Partners IncBuy+107,131—107,131$145.70KQ4 2025Feb 13, 2026
Squarepoint Ops LlcBuy+65,730—65,730$89.39KQ4 2025Feb 13, 2026
Vontobel Holding Ltd.Buy+30,000—30,000$40.80KQ4 2025Feb 13, 2026
Wells Fargo & Company/MnBuy+19,800—19,800$26.93KQ4 2025Feb 13, 2026
Morgan StanleyBuy+19,070—19,070$25.93KQ4 2025Feb 13, 2026
Intrepid Financial Planning Group LlcBuy+10,500—10,500$14.28KQ4 2025Feb 13, 2026
Level Four Advisory Services, LlcBuy+10,000—10,000$13.60KQ4 2025Feb 13, 2026
Arax Advisory PartnersBuy+707—707$962.00Q4 2025Feb 13, 2026
Citigroup IncBuy+431—431$586.00Q4 2025Feb 13, 2026
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Frequently asked questions about ATNM activity

  • Which institutional owners are buying ATNM?

    Institutional owners buying ATNM include investors who have either initiated new positions or increased their existing holdings based on recent SEC 13F filings. The activity table above highlights which funds added shares in the latest reporting periods and how their positions changed over time.

  • What does "buy" mean in ATNM activity?

    "Buy" means an investor increased their reported position in ATNM compared to the prior reporting period. This reflects growing exposure to ACTINIUM PHARMACEUTICALS INC (ATNM) rather than necessarily a brand-new position (though new positions also appear as buys when prior quantity was zero).

  • Is institutional interest in ATNM increasing?

    Institutional interest in ATNM can be assessed by comparing the number of tracked funds adding or increasing positions versus those trimming or exiting across the periods shown. A higher number of additions typically signals increasing participation among large filers, but it should be read alongside position sizes and the full table.