Amentum Holdings, Inc. (AMTM) Institutional Ownership & Insider Trading
456 institutions reported holding Amentum Holdings, Inc. shares in 13F filings for the quarter ended 2026-06-30, according to EquiReason's reading of their SEC filings.
Source: SEC EDGAR filings · figures as of 2026-07-03 · read by EquiReason
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- Market cap
- 5.3B
- P/E TTM
- 26.2
- Dividend yield
- —
- 52-week
- —
- Next earnings
- 23 Nov, in 30 days
Institutions · all 13F filers
quarter to 30 Jun 2026 · filers in both quarters456 institutions held 85.8% of the shares. Across filers that reported both quarters, shares held changed +1.9%.
Largest moves, shares (millions)
Institutional flow by quarter
net shares added or trimmed, millions · filers in both quarters| Quarter | Holders | Shares held, M | Change | Increased | New | Decreased | Closed |
|---|---|---|---|---|---|---|---|
| Jun 26 | 456 | 210 | +1.9% | 135 | 41 | 144 | 60 |
| Mar 26 | 480 | 202 | +5.5% | 137 | 50 | 127 | 45 |
| Dec 25 | 475 | 194 | +0.6% | 121 | 56 | 141 | 46 |
| Sep 25 | 448 | 193 | -2.6% | 85 | 58 | 151 | 61 |
| Jun 25 | 452 | 200 | +4.1% | 221 | 95 | 93 | 51 |
| Mar 25 | 405 | 190 | +7.6% | 104 | 59 | 140 | 84 |
| Dec 24 | 436 | 177 | +75.3% | 93 | 108 | 151 | 171 |
| Sep 24 | 477 | 100 | — | — | — | — | — |
Amentum Holdings, Inc. — questions
- Who owns Amentum Holdings, Inc. stock?
- 456 institutions reported Amentum Holdings, Inc. shares in 13F filings for the quarter ended 2026-06-30. The largest: AMERICAN SECURITIES LLC (18.4%), Invesco Ltd. (10.2%), BlackRock, Inc. (7.3%).
Every figure on this page comes from Amentum Holdings, Inc.'s own SEC filings — see them on SEC EDGAR. Price data is licensed and shown only inside the product.
How these figures are read: methodology · EquiReason.