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Actinium Pharmaceuticals (ATNM) Institutional Ownership

Actinium Pharmaceuticals logo
$1.06 -0.02 (-1.85%)
Closing price 06/8/2026 04:00 PM Eastern
Extended Trading
$1.07 +0.01 (+1.04%)
As of 06/8/2026 06:48 PM Eastern
Extended trading is trading that happens on electronic markets outside of regular trading hours. This is a fair market value extended hours price provided by Massive. Learn more.
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Institutional Ownership Changes (13F Filings) for Actinium Pharmaceuticals (NYSE:ATNM)

Current
Institutional Ownership
Percentage
27.50%
Number of
Institutional Buyers
(last 12 months)
13
Total
Institutional Inflows
(last 12 months)
$1.50M
Number of
Institutional Sellers
(last 12 months)
7
Total
Institutional Outflows
(last 12 months)
$880.53K
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ATNM Institutional Buying and Selling by Quarter

Actinium Pharmaceuticals Major Shareholders & Ownership History

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Reporting DateMajor Shareholder NameShares HeldMarket Value% of PortfolioQuarterly Change in SharesOwnership in CompanyDetails
5/14/2026 Renaissance Technologies LLC471,600$469K0.0%+20.7%1.503%
2/18/2026 Millennium Management LLC601,600$818K0.0%-3.7%1.928%
2/16/2026 Squarepoint Ops LLC65,730$89K0.0%N/A0.211%
2/13/2026 Gagnon Securities LLC201,807$274K0.1%-10.8%0.647%
2/12/2026 Renaissance Technologies LLC390,784$531K0.0%+35.4%1.253%
2/10/2026 Goldman Sachs Group Inc.70,358$96K0.0%N/A0.226%
2/5/2026 AM Investment Strategies LLC29,356$40K0.0%N/A0.094%
2/4/2026 Bailard Inc.57,867$79K0.0%N/A0.185%
11/20/2025 Mayport LLC22,000$35K0.0%N/A0.071%
11/17/2025 Qube Research & Technologies Ltd25,722$41K0.0%-48.5%0.082%
11/17/2025 Millennium Management LLC624,697$1M0.0%-5.8%2.002%
11/14/2025 Two Sigma Investments LP234,293$375K0.0%+403.4%0.751%
11/7/2025Vanguard Group Inc.1,384,543$2.22M0.0%+0.9%4.438%
8/15/2025 Bridgeway Capital Management LLC40,000$56K0.0%-46.7%0.128%
8/15/2025 Bank of America Corp DE25,922$36K0.0%-50.7%0.083%
8/14/2025 Jane Street Group LLC218,324$306K0.0%N/A0.700%
8/14/2025 Qube Research & Technologies Ltd49,932$70K0.0%N/A0.160%
8/13/2025 Marshall Wace LLP98,123$137K0.0%N/A0.315%
8/12/2025 North Star Asset Management Inc.20,000$28K0.0%+100.0%0.064%
8/8/2025 Geode Capital Management LLC329,689$462K0.0%-53.7%1.057%
8/1/2025 Y Intercept Hong Kong Ltd64,909$91K0.0%N/A0.208%
6/27/2025 Goldman Sachs Group Inc.76,811$124K0.0%-43.2%0.246%
5/16/2025Goldman Sachs Group Inc.76,811$124K0.0%-43.2%0.246%
5/16/2025AQR Capital Management LLC63,249$102K0.0%+278.6%0.203%
5/13/2025Callan Family Office LLC23,603$38K0.0%N/A0.076%
5/12/2025Nuveen LLC148,560$239K0.0%N/A0.476%
5/12/2025Invesco Ltd.153,555$247K0.0%+1,135.9%0.492%
5/9/2025Gagnon Securities LLC226,622$365K0.1%N/A0.726%
5/9/2025Charles Schwab Investment Management Inc.97,604$157K0.0%+35.4%0.313%
5/7/2025AM Investment Strategies LLC30,872$50K0.0%+114.1%0.099%
4/23/2025Creative Financial Designs Inc. ADV105,631$170K0.0%+16.1%0.339%
2/17/2025Squarepoint Ops LLC183,262$231K0.0%+25.4%0.587%
2/17/2025Nuveen Asset Management LLC148,560$187K0.0%+49.5%0.476%
2/17/2025Millennium Management LLC117,454$148K0.0%-26.6%0.376%
2/17/2025Deutsche Bank AG123,134$155K0.0%+413.6%0.395%
2/17/2025Bank of America Corp DE78,767$99K0.0%+76.6%0.252%
2/14/2025Northern Trust Corp251,930$317K0.0%+4.9%0.807%
2/14/2025Dimensional Fund Advisors LP34,923$44K0.0%-31.9%0.112%
2/13/2025XTX Topco Ltd25,606$32K0.0%-82.0%0.082%
2/13/2025Renaissance Technologies LLC190,400$240K0.0%+49.9%0.610%
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2/12/2025JPMorgan Chase & Co.123,831$156K0.0%+804.5%0.397%
2/11/2025Sei Investments Co.49,214$62K0.0%N/A0.158%
2/10/2025Creative Financial Designs Inc. ADV91,007$115K0.0%+42.7%0.292%
2/4/2025Los Angeles Capital Management LLC213,950$270K0.0%+25.0%0.686%
1/30/2025Vontobel Holding Ltd.25,000$32K0.0%N/A0.080%
11/20/2024Virtu Financial LLC13,748$26K0.0%-34.4%0.044%
11/19/2024Barclays PLC42,935$81K0.0%+323.0%0.138%
11/16/2024Geode Capital Management LLC686,153$1.29M0.0%+3.0%2.199%
11/15/2024Barclays PLC42,935$81K0.0%+323.0%0.138%
11/15/2024XTX Topco Ltd142,493$268K0.0%N/A0.457%
11/15/2024Jane Street Group LLC40,837$77K0.0%-37.4%0.131%
11/15/2024Wellington Management Group LLP59,608$112K0.0%N/A0.191%
11/15/2024State Street Corp602,649$1.13M0.0%-1.2%1.932%
11/12/2024Charles Schwab Investment Management Inc.72,093$136K0.0%-13.7%0.231%
11/4/2024Los Angeles Capital Management LLC171,180$322K0.0%N/A0.575%
10/28/2024Interchange Capital Partners LLC19,646$37K0.0%N/A0.066%
10/28/2024Creative Financial Designs Inc. ADV63,785$120K0.0%+183.0%0.214%
8/15/2024The Manufacturers Life Insurance Company12,488$92K0.0%N/A0.042%
8/14/2024Squarepoint Ops LLC48,096$356K0.0%N/A0.161%
8/14/2024Marshall Wace LLP256,026$1.90M0.0%+67.9%0.860%
8/9/2024Renaissance Technologies LLC19,200$142K0.0%N/A0.064%
8/9/2024Dimensional Fund Advisors LP111,869$828K0.0%-22.6%0.376%
8/1/2024Rhumbline Advisers39,656$293K0.0%+23.4%0.133%
7/26/2024Bank of New York Mellon Corp86,401$639K0.0%+28.3%0.290%
5/20/2024Virtu Financial LLC82,029$642K0.0%+319.2%0.275%
5/10/2024Vanguard Group Inc.1,446,326$11.33M0.0%+6.0%4.857%
4/11/2024Sanders Morris Harris LLC10,000$78K0.0%N/A0.034%
2/13/2024Intrepid Financial Planning Group LLC16,000$81K0.0%-11.1%0.058%
1/10/2024Creative Financial Designs Inc. ADV19,800$101K0.0%+19.1%0.072%
11/13/2023Brandywine Global Investment Management LLC174,500$1.03M0.0%N/A0.637%
9/21/2023Barclays PLC5,185$39K0.0%-90.7%0.019%
8/11/2023ExodusPoint Capital Management LP57,934$430K0.0%-3.9%0.225%
8/4/2023American International Group Inc.12,520$93K0.0%N/A0.049%
7/26/2023Creative Financial Designs Inc. ADV16,475$122K0.0%+9.8%0.064%
7/10/2023Quent Capital LLC5,000$37K0.0%N/A0.019%
5/23/2023Royce & Associates LP50,000$472K0.0%N/A0.194%
5/11/2023ExodusPoint Capital Management LP60,277$570K0.0%+30.1%0.234%
5/4/2023Barclays PLC55,662$526K0.0%N/A0.216%
5/4/2023Royce & Associates LP50,000$473K0.0%N/A0.194%
5/3/2023Jump Financial LLC13,092$124K0.0%-44.8%0.051%
5/1/2023Virtu Financial LLC21,650$205K0.0%-19.4%0.084%
4/25/2023Creative Financial Designs Inc. ADV15,000$142K0.0%N/A0.058%
2/15/2023Endurant Capital Management LP45,612$486K0.2%N/A0.179%
2/14/2023683 Capital Management LLC16,629$177K0.0%N/A0.065%
2/10/2023Blair William & Co. IL89,400$952K0.0%-14.0%0.351%
2/9/2023Citigroup Inc.49,152$523K0.0%+544.3%0.193%
11/16/2022Sentinus LLC22,500$166K0.1%N/A0.089%
11/14/2022Delphia USA Inc.14,226$105K0.1%-19.5%0.056%
11/7/2022Virtu Financial LLC12,590$93K0.0%-64.8%0.050%
11/7/2022Jump Financial LLC23,400$173K0.0%N/A0.093%
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11/2/2022Rockefeller Capital Management L.P.14,331$105K0.0%+11.3%0.057%
8/16/2022Corton Capital Inc.16,285$78K0.1%N/A0.068%
8/16/2022Delphia USA Inc.17,669$85K0.1%N/A0.074%
8/13/2022Virtu Financial LLC35,789$172K0.0%+154.0%0.150%
5/11/2022ACT Capital Management LLC6,500$33K0.0%-82.7%0.029%


ATNM Institutional Ownership - Frequently Asked Questions

During the previous two years, 41 institutional investors and hedge funds held shares of Actinium Pharmaceuticals. The most heavily invested institutionals were Vanguard Group Inc. ($2.22M), State Street Corp ($1.13M), Millennium Management LLC ($818K), Bank of New York Mellon Corp ($639K), Renaissance Technologies LLC ($469K), Geode Capital Management LLC ($462K), and Two Sigma Investments LP ($375K).Learn more on Actinium Pharmaceuticals' institutional investors.

27.50% of Actinium Pharmaceuticals' stock is owned by institutional investors. Learn more on ATNM's institutional investor holdings.

Of the 36 institutional investors that purchased Actinium Pharmaceuticals' stock in the last 24 months, the following investors and hedge funds have bought the highest volume of shares: Renaissance Technologies LLC ($265.57K), Gagnon Securities LLC ($226.62K), Jane Street Group LLC ($218.32K), Los Angeles Capital Management LLC ($213.95K), Marshall Wace LLP ($201.68K), Two Sigma Investments LP ($187.75K), and Squarepoint Ops LLC ($150.99K).

Institutional investors have bought a total of 1,070,020 shares in the last 24 months. This purchase volume represents approximately $1.50M in transactions.

The following institutional investors have sold Actinium Pharmaceuticals stock in the last 24 months: Geode Capital Management LLC ($382.11K), Millennium Management LLC ($61.67K), Goldman Sachs Group Inc. ($58.49K), Bridgeway Capital Management LLC ($35K), Bank of America Corp DE ($26.64K), Gagnon Securities LLC ($24.45K), and Qube Research & Technologies Ltd ($24.21K).

Institutional investors have sold a total of 612,567 shares in the last 24 months. This volume of shares sold represents approximately $880.53K in transactions.


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This page (NYSE:ATNM) was last updated on 6/9/2026 by MarketBeat.com Staff.
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