Which hedge funds own ATNM? ACTINIUM PHARMACEUTICALS INC, Q2 2026 13F holders
4 of the hedge funds tracked by WhaleCreep disclosed a position in ATNM (ACTINIUM PHARMACEUTICALS INC) in their Q2 2026 13F filings, worth $1.2m in total. The largest holder by portfolio weight is Renaissance Technologies LLC at 0.0% of its book. 1 exited: NINE MASTS CAPITAL Ltd.
4tracked managers holding
0opened this quarter
1exited this quarter
Which hedge funds hold ATNM? Current holders by portfolio weight
| Manager | As of | Weight of book | Value | Shares | Δ shares | Action |
|---|---|---|---|---|---|---|
| Renaissance Technologies LLC | Q2 2026 | 0.0% | $372.9k | 380,491 | -19% | reduced |
| Millennium Management LLC | Q2 2026 | 0.0% | $504.3k | 514,580 | -9% | reduced |
| Two Sigma Investments, LP | Q2 2026 | 0.0% | $254.0k | 259,179 | -23% | reduced |
| Qube Research & Technologies Ltd | Q2 2026 | 0.0% | $56.7k | 57,812 | 220% | added |
Exited since the previous quarter
| Manager | Prior weight | Prior value |
|---|---|---|
| NINE MASTS CAPITAL Ltd | 0.0% | $35.1k |
How has hedge fund ownership of ATNM changed?
| Quarter | Managers holding | Combined value |
|---|---|---|
| Q2 2026 | 4 | $1.2m |
| Q1 2026 | 5 | $1.4m |
| Q4 2025 | 7 | $1.8m |
| Q3 2025 | 7 | $2.1m |
| Q2 2025 | 11 | $1.8m |
| Q1 2025 | 2 | $194.6k |
| Q4 2024 | 6 | $653.9k |
| Q3 2024 | 8 | $2.3m |
| Q2 2024 | 1 | $142.1k |
| Q2 2023 | 1 | $358.0k |
| Q1 2023 | 1 | $966.0k |
| Q4 2022 | 1 | $1.7m |
| Q3 2022 | 1 | $578.0k |
| Q2 2022 | 1 | $278.0k |
| Q4 2020 | 1 | $2.3m |
| Q3 2020 | 1 | $557.0k |
Counts every tracked manager that disclosed ATNM in that quarter's filing, including managers that have since stopped filing.