ATNM — ACTINIUM PHARMACEUTICALS INC
Public company
InvestorLens aggregates public filing data to show which tracked investors reported holdings in this stock. Dollar values represent reported position values, not market capitalization, and may be delayed up to 45 days. Not a recommendation.
Sourced from SEC EDGAR public filings
About ACTINIUM PHARMACEUTICALS INC (ATNM)
ACTINIUM PHARMACEUTICALS INC (ATNM) appears in the most recent 13F filings of 3 tracked institutional investors. The largest disclosed position is held by Izzy Englander (Millennium Management), valued at $818,176. Across recent filings, tracked investors recorded 4 new positions, 0 increased, 2 reduced, and 0 exited. All data sourced from SEC 13F filings.
Based on recent institutional activity in ATNM
How many top investors track ATNM
A small number of top investors own this.
ATNM Ownership Composition
How ACTINIUM PHARMACEUTICALS INC is held across tracked investor types, based on reported 13F positions.
- Other97.9%
- Hedge Funds2.1%
Tracked investors reporting ATNM
- Izzy EnglanderMar 31, 2026Millennium ManagementShares564.6KValue$561.9K% Portfolio0.00%
- Ken GriffinMar 31, 2026Citadel AdvisorsShares101.1KValue$100.6K% Portfolio0.00%
- Steve CohenDec 31, 2025Point72 Asset ManagementShares10.3KValue$14K% Portfolio0.00%
Recent activity
- $818.2KFeb 17, 2026
- $561.9KMay 15, 2026
- New$14KFeb 17, 2026
- Reduced$100.6K(-11.86%)May 15, 2026
- Reduced$156K(-24.40%)Feb 17, 2026
- New$242.7KNov 14, 2025
Frequently asked questions
- How many institutional investors hold ATNM?
- 3 tracked institutional investors disclosed a position in ATNM (ACTINIUM PHARMACEUTICALS INC) in their most recent 13F filing.
- Who is the largest institutional holder of ATNM?
- Izzy Englander, Millennium Management, holds the largest disclosed position in ATNM, valued at $818,176.
- Did institutional ownership of ATNM increase or decrease?
- Across recent 13F filings, tracked investors recorded 4 new positions, 0 increased, 2 reduced, and 0 fully exited ATNM.
- Where does this ATNM ownership data come from?
- SEC Form 13F-HR filings, accessed via EDGAR. 13F filings are disclosed quarterly with a 45-day reporting delay and cover U.S.-listed long equity positions only. This is not investment advice.