Who Owns Actinium Pharmaceuticals, Inc. (ATNM)?Hedge Fund & Institutional Holders
Institutional Holders
50
as of Q4 2025
Total Institutional Value
$1.702274217145784e+56T
% of Float Held
—
QoQ Change in Holders
+15 / -4
Price History
ATNM — Biggest New Institutional Buyers This Quarter
| Fund | Action | Shares Added | Value Added |
|---|---|---|---|
| GAGNON SECURITIES LLC | New Position | +202K | +$274K |
| BAILARD, INC. | New Position | +58K | +$78K |
| AM INVESTMENT STRATEGIES LLC | New Position | +29K | +$40K |
| NINE MASTS CAPITAL Ltd | New Position | +13K | +$17K |
| Savvy Advisors, Inc. | New Position | +10K | +$13K |
| Leonteq Securities AG | New Position | +1K | +$6K |
| CWM, LLC | New Position | +620 | +$1K |
| NISA INVESTMENT ADVISORS, LLC | New Position | +958 | +$1K |
| PITTENGER & ANDERSON INC | New Position | +341 | +$0 |
| FEDERATED HERMES, INC. | New Position | +1K | +$0 |
| TWO SIGMA SECURITIES, LLC | New Position | +13K | +$0 |
| HRT FINANCIAL LP | New Position | +13K | +$0 |
| Point72 Asset Management, L.P. | New Position | +10K | +$0 |
| Squarepoint Ops LLC | New Position | +66K | +$0 |
| SBI Securities Co., Ltd. | New Position | +542 | +$0 |
ATNM — Institutions Reducing or Closing Positions
| Fund | Action | Shares Sold | Value Sold |
|---|---|---|---|
| MILLENNIUM MANAGEMENT LLC | Decreased | -23K | -$999.5M |
| TWO SIGMA INVESTMENTS, LP | Decreased | -25K | -$374.9M |
| TWO SIGMA ADVISERS, LP | Decreased | -300 | -$314.2M |
| CITADEL ADVISORS LLC | Closed Position | -127K | -$202.6M |
| Gen-Wealth Partners Inc | Decreased | -2K | -$174.9M |
| SUSQUEHANNA INTERNATIONAL GROUP, LLP | Decreased | -23K | -$168.7M |
| MARSHALL WACE, LLP | Closed Position | -26K | -$42.1M |
| Qube Research & Technologies Ltd | Decreased | -7K | -$41.2M |
| FMR LLC | Decreased | -7K | -$33.8M |
| AQR CAPITAL MANAGEMENT LLC | Closed Position | -17K | -$26.9M |
| UBS Group AG | Decreased | -14K | -$23.3M |
| Intrepid Financial Planning Group LLC | Decreased | -2K | -$20.0M |
| Point72 Asia (Singapore) Pte. Ltd. | Closed Position | -10K | -$16.5M |
| ROYAL BANK OF CANADA | Decreased | -6K | -$9.0M |
| Rockefeller Capital Management L.P. | Decreased | -500 | -$7.2M |
Top Institutional Holders(Q4 2025)
ATNM Institutional Ownership History
| Quarter | Holders | Total Value | Change |
|---|---|---|---|
| Q4 2025 | 60 | $2.5M | +9 |
| Q3 2025 | 51 | $7.0B | -1 |
| Q2 2025 | 52 | $6.1B | -18 |
| Q1 2025 | 70 | $12.2B | +4 |
| Q4 2024 | 66 | $34.2B | +2 |
| Q3 2024 | 64 | $11.5T | -1 |
| Q2 2024 | 65 | $29.2T | +8 |
| Q1 2024 | 57 | $29.4T | — |
Similar Stocks by Institutional Ownership
As of Q4 2025, 50 institutional investors hold ATNM (Actinium Pharmaceuticals, Inc.). The largest holder is VANGUARD GROUP INC with $1.7M in shares. This quarter, 15 institutions opened new positions and 4 closed their positions.
Frequently Asked Questions
How many hedge funds own ATNM?
As of Q4 2025, 50 institutional investors report holding ATNM (Actinium Pharmaceuticals, Inc.) in their 13F filings.
Who is the largest institutional holder of ATNM?
The largest institutional holder of ATNM is VANGUARD GROUP INC with $1.7M in shares.
Is institutional ownership of ATNM increasing or decreasing?
This quarter, 15 institutions opened new positions in ATNM and 4 closed their positions.