Amentum provides engineering, technology, and mission-support services to U.S. government agencies and commercial clients in defense, intelligence, and infrastructure.
| Filer | 13FScore | This quarter | Shares | Value | % of their book |
|---|---|---|---|---|---|
| Louis Bacon / Moore | 56 | Added +84% | 873,610 | $22,783,749 | 0.5% |
| Ancora | 42 | Added +75% | 703,119 | $18,337,343 | 0.4% |
| AMERICAN SECURITIES LLC (auto-surfaced) | 70 | Holds (flat) | 45,026,743 | $1,174,297,457 | 29.9% |
| Ruane Cunniff / Sequoia Fund | 76 | Trimmed -32% | 1,622,982 | $42,327,370 | 0.7% |
| Bridgewater | 55 | Trimmed -7% | 17,052 | $444,716 | 0.0% |
| George Soros / Soros Fund Mgmt | 31 | Trimmed -2% | 107,606 | $2,806,364 | 0.0% |
| Trade date | Who | Type | Amount | |
|---|---|---|---|---|
| 2026-05-14 | Trump, Donald J President | BUY | $15,001 - $50,000 | PTR |
Every tracked holder of this name, sorted new → added → flat → trimmed. Shares = reported 13F share count; Value as reported (a few managers file values in $thousands). Generated 2026-07-20.