ATNM Institutional Ownership
Top institutional (13F) holders of ATNM and activist (13D/G) positions, sourced from SEC EDGAR.
Institutional owners
21
Institutional value
$3.55B
Top holder
Vanguard Capital Management
Top holders
| Holder | Filed | Value |
|---|---|---|
| Vanguard Capital Managementhedge fund | Aug 13, 2026 | $1.21B |
| MILLENNIUM MANAGEMENT LLCinvestment advisor | Aug 14, 2026 | $504.29M |
| BlackRock, Inc.holding company | Aug 7, 2026 | $387.98M |
| RENAISSANCE TECHNOLOGIES LLCinvestment advisor | Aug 13, 2026 | $372.88M |
| GEODE CAPITAL MANAGEMENT, LLCinvestment advisor | Aug 12, 2026 | $318.55M |
| TWO SIGMA INVESTMENTS, LPinvestment advisor | Aug 14, 2026 | $254.00M |
| STATE STREET CORPinvestment advisor | Aug 7, 2026 | $119.77M |
| CITADEL ADVISORS LLCinvestment advisor | May 15, 2026 | $100.63M |
| GOLDMAN SACHS GROUP INCinvestment advisor | May 15, 2026 | $69.91M |
| NORTHERN TRUST CORPinvestment advisor | Aug 13, 2026 | $68.35M |
| SUSQUEHANNA INTERNATIONAL GROUP, LLPinvestment advisor | Aug 14, 2026 | $55.69M |
| Dimensional Fund Advisors LPhedge fund | May 7, 2026 | $34.76M |
| WELLS FARGO & COMPANY/MNinvestment advisor | Aug 14, 2026 | $19.40M |
| JANE STREET GROUP, LLCholding company | Aug 14, 2026 | $19.11M |
| UBS Group AGinvestment advisor | Aug 13, 2026 | $6.62M |
| MORGAN STANLEYinvestment advisor | Aug 13, 2026 | $6.21M |
| JPMORGAN CHASE & COinvestment advisor | Aug 12, 2026 | $1.48M |
| CITIGROUP INCinvestment advisor | May 11, 2026 | $675.0K |
| Point72 Asset Management, L.P.investment advisor | Feb 17, 2026 | $14.0K |
| FMR LLCinvestment advisor | May 15, 2026 | $79 |
| ROYAL BANK OF CANADAinvestment advisor | Aug 14, 2026 | $0 |
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Source: SEC EDGAR Schedule 13D / 13G and 13F filings.