Amentum Holdings, Inc.
AMTM- Exchange
- NYSE
- Industry
- Services-Business Services, NEC
- SEC CIK
- 0002011286
No open-market purchases or sales by Amentum Holdings, Inc. insiders were filed in the last 90 days; 464 institutions reported holding it in 13F filings for Q2 2026, worth $4.34B in total; Soros Fund Management is the only superinvestor holding it.
13F holders, Q1 2025
Institutional positions in Amentum Holdings, Inc. as of Mar 31, 2025. Investment managers with $100 million or more in US stocks report their long positions on Form 13F within 45 days after each quarter ends. How 13F works
- Institutional holders
- 418
- −22 vs. Q4 2024
- Shares held
- 191.7M
- +26.8M (+16.3%) vs. Q4 2024
- Total value
- $3.49B
- +$18.2M (+0.5%) vs. Q4 2024
- New holders
- 73
- 112 more added
- Sold out
- 95
- 151 more reduced
11 institutions that held it in Q4 2024 haven't filed for Q1 2025 yet. Not filing isn't selling, so they aren't counted as sold out or in the changes above.
Compare with Q4 2024: new holders, sold out and not filed yet
Holders and value by quarter
Institutions reporting AMTM on Form 13F each quarter since Q1 2021, and the total value they reported. Values are as of each quarter end, so they also move with the share price.
| Quarter | Holders | Value |
|---|---|---|
| Q2 2026 | 464 | $4.34B |
| Q1 2026 | 486 | $5.28B |
| Q4 2025 | 483 | $5.64B |
| Q3 2025 | 462 | $4.63B |
| Q2 2025 | 461 | $4.73B |
| Q1 2025 | 418 | $3.49B |
| Q4 2024 | 451 | $3.48B |
| Q3 2024 | 492 | $3.23B |
| Q2 2024 | 0 | $0 |
| Q1 2024 | 0 | $0 |
| Q4 2023 | 0 | $0 |
| Q3 2023 | 0 | $0 |
| Q2 2023 | 0 | $0 |
| Q1 2023 | 0 | $0 |
| Q4 2022 | 0 | $0 |
| Q3 2022 | 0 | $0 |
| Q2 2022 | 0 | $0 |
| Q1 2022 | 0 | $0 |
| Q4 2021 | 0 | $0 |
| Q3 2021 | 0 | $0 |
| Q2 2021 | 0 | $0 |
| Q1 2021 | 0 | $0 |
Institutions, Q1 2025
Shares, value and share of portfolio for each institution holding Amentum Holdings, Inc.; share changes are against Q4 2024.
| Institution | Shares | Value | % of portfolio | Change in shares | Action |
|---|---|---|---|---|---|
| Morgan Stanley | 2,092,848 | $38.1M | 0.00% | +610,327+41.2% | Added |
| FIL Ltd | 2,209,313 | $40.2M | 0.04% | +415,760+23.2% | Added |
| Voss Capital, LLC | 2,220,709 | $40.4M | 3.10% | +1,770,891+393.7% | Added |
| Geode Capital Management, LLC | 2,299,997 | $41.9M | 0.00% | +336,749+17.2% | Added |
| Ruane, Cunniff & Goldfarb L.P. | 2,393,039 | $43.6M | 0.79% | −43,255−1.8% | Reduced |
| Van Eck Associates Corp | 2,603,564 | $47.4M | 0.06% | +1,471,279+129.9% | Added |
| Discovery Capital Management, LLC | 2,630,930 | $47.9M | 5.73% | +2,165,630+465.4% | Added |
| Citadel Advisors LLC | 2,926,482 | $53.3M | 0.05% | +2,531,660+641.2% | Added |
| Kovitz Investment Group Partners, LLC | 3,075,305 | $56.0M | 0.28% | −76,957−2.4% | Reduced |
| Thompson Siegel & Walmsley LLC | 3,326,378 | $60.5M | 1.03% | +1,377,694+70.7% | Added |
| Frontier Capital Management Co LLC | 3,578,732 | $65.1M | 0.71% | +3,578,732 | New |
| FMR LLC | 4,408,949 | $80.2M | 0.01% | +2,013,896+84.1% | Added |
| State Street Corp | 6,576,351 | $119.7M | 0.00% | +122,098+1.9% | Added |
| Primecap Management Co | 10,061,589 | $183.1M | 0.15% | +3,647,210+56.9% | Added |
| Vanguard Group Inc | 16,342,560 | $297.4M | 0.01% | −199,887−1.2% | Reduced |
| Invesco Ltd. | 17,191,110 | $312.9M | 0.06% | +3,334,871+24.1% | Added |
| BlackRock, Inc. | 18,248,989 | $332.1M | 0.01% | +1,474,218+8.8% | Added |
| American Securities LLC | 43,893,904 | $798.9M | 100.00% | 00.0% | Unchanged |
| Proequities, Inc. | 0 | $0 | 0.00% | −471−100.0% | Sold out |
| Allspring Global Investments Holdings, LLC | 0 | $0 | 0.00% | −2,420,967−100.0% | Sold out |
| Wellington Management Group LLP | 0 | $0 | 0.00% | −2,333,221−100.0% | Sold out |
| Mirae Asset Global ETFs Holdings Ltd. | 0 | $0 | 0.00% | −869,596−100.0% | Sold out |
| Mesirow Financial Investment Management, Inc. | 0 | $0 | 0.00% | −176,931−100.0% | Sold out |
| Hutchinson Capital Management | 0 | $0 | 0.00% | −145,490−100.0% | Sold out |
| Point72 Asset Management, L.P. | 0 | $0 | 0.00% | −126,382−100.0% | Sold out |
| Pacific Capital Partners Ltd | 0 | $0 | 0.00% | −125,000−100.0% | Sold out |
| HSBC Holdings PLC | 0 | $0 | 0.00% | −119,517−100.0% | Sold out |
| D. E. Shaw & Co., Inc. | 0 | $0 | 0.00% | −119,936−100.0% | Sold out |
| United Capital Financial Advisers, LLC | 0 | $0 | 0.00% | −102,313−100.0% | Sold out |
| Cinctive Capital Management LP | 0 | $0 | 0.00% | −91,085−100.0% | Sold out |
| XTX Topco Ltd | 0 | $0 | 0.00% | −90,065−100.0% | Sold out |
| AQR Capital Management LLC | 0 | $0 | 0.00% | −84,357−100.0% | Sold out |
| Badgley Phelps Wealth Managers, LLC | 0 | $0 | 0.00% | −72,233−100.0% | Sold out |
| Arrowstreet Capital, Limited Partnership | 0 | $0 | 0.00% | −71,946−100.0% | Sold out |
| Y-Intercept (Hong Kong) Ltd | 0 | $0 | 0.00% | −61,268−100.0% | Sold out |
| Algert Global LLC | 0 | $0 | 0.00% | −56,842−100.0% | Sold out |
| Toroso Investments, LLC | 0 | $0 | 0.00% | −49,457−100.0% | Sold out |
| Hilton Capital Management, LLC | 0 | $0 | 0.00% | −45,849−100.0% | Sold out |
| Strategic Advisors LLC | 0 | $0 | 0.00% | −45,705−100.0% | Sold out |
| Sumitomo Mitsui Trust Holdings, Inc. | 0 | $0 | 0.00% | −44,085−100.0% | Sold out |
| A. D. Beadell Investment Counsel, Inc. | 0 | $0 | 0.00% | −43,155−100.0% | Sold out |
| Standard Life Aberdeen plc | 0 | $0 | 0.00% | −35,555−100.0% | Sold out |
| ProShare Advisors LLC | 0 | $0 | 0.00% | −31,054−100.0% | Sold out |
| Berger Financial Group, Inc | 0 | $0 | 0.00% | −30,158−100.0% | Sold out |
| Murchinson Ltd. | 0 | $0 | 0.00% | −30,000−100.0% | Sold out |
| Westwood Holdings Group Inc. | 0 | $0 | 0.00% | −28,890−100.0% | Sold out |
| Investment Management Corp of Ontario | 0 | $0 | 0.00% | −28,214−100.0% | Sold out |
| Baker Avenue Asset Management, LP | 0 | $0 | 0.00% | −24,740−100.0% | Sold out |
| Forte Capital LLC | 0 | $0 | 0.00% | −24,234−100.0% | Sold out |
| Royce & Associates LP | 0 | $0 | 0.00% | −22,500−100.0% | Sold out |
| Utah Retirement Systems | 0 | $0 | 0.00% | −20,585−100.0% | Sold out |
| Foundations Investment Advisors, LLC | 0 | $0 | 0.00% | −19,458−100.0% | Sold out |
| Squarepoint Ops LLC | 0 | $0 | 0.00% | −18,989−100.0% | Sold out |
| QRG Capital Management, Inc. | 0 | $0 | 0.00% | −18,678−100.0% | Sold out |
| Evergreen Capital Management LLC | 0 | $0 | 0.00% | −18,605−100.0% | Sold out |
| Canada Pension Plan Investment Board | 0 | $0 | 0.00% | −16,854−100.0% | Sold out |
| Mercer Global Advisors Inc | 0 | $0 | 0.00% | −16,207−100.0% | Sold out |
| National Pension Service | 0 | $0 | 0.00% | −15,555−100.0% | Sold out |
| Kennedy Capital Management, Inc. | 0 | $0 | 0.00% | −15,449−100.0% | Sold out |
| Baird Financial Group, Inc. | 0 | $0 | 0.00% | −14,137−100.0% | Sold out |
| Cannon Global Investment Management, LLC | 0 | $0 | 0.00% | −13,500−100.0% | Sold out |
| Exchange Traded Concepts, LLC | 0 | $0 | 0.00% | −13,312−100.0% | Sold out |
| Amundi | 0 | $0 | 0.00% | −12,908−100.0% | Sold out |
| SFE Investment Counsel | 0 | $0 | 0.00% | −12,830−100.0% | Sold out |
| Evercore Wealth Management, LLC | 0 | $0 | 0.00% | −12,399−100.0% | Sold out |
| DRW Securities, LLC | 0 | $0 | 0.00% | −12,311−100.0% | Sold out |
| Pathstone Holdings, LLC | 0 | $0 | 0.00% | −12,128−100.0% | Sold out |
| Jefferies Financial Group Inc. | 0 | $0 | 0.00% | −11,830−100.0% | Sold out |
| Boothbay Fund Management, LLC | 0 | $0 | 0.00% | −11,250−100.0% | Sold out |
| Oppenheimer & Co Inc | 0 | $0 | 0.00% | −10,621−100.0% | Sold out |
| Cetera Investment Advisers | 0 | $0 | 0.00% | −10,591−100.0% | Sold out |
| Janney Capital Management LLC | 0 | $0 | 0.00% | −10,039−100.0% | Sold out |
| Pekin Hardy Strauss, Inc. | 0 | $0 | 0.00% | −9,900−100.0% | Sold out |
| Fifth Lane Capital, LP | 0 | $0 | 0.00% | −9,775−100.0% | Sold out |
| JustInvest LLC | 0 | $0 | 0.00% | −9,651−100.0% | Sold out |
| State of Wyoming | 0 | $0 | 0.00% | −2,756−100.0% | Sold out |
| Point72 Asia (Singapore) Pte. Ltd. | 0 | $0 | 0.00% | −2,748−100.0% | Sold out |
| Shell Asset Management Co | 0 | $0 | 0.00% | −2,684−100.0% | Sold out |
| Horizon Investments, LLC | 0 | $0 | 0.00% | −1,712−100.0% | Sold out |
| Harbor Capital Advisors, Inc. | 0 | $0 | 0.00% | −1,380−100.0% | Sold out |
| Centerpoint Advisors, LLC | 0 | $0 | 0.00% | −1,151−100.0% | Sold out |
| Federated Hermes, Inc. | 0 | $0 | 0.00% | −949−100.0% | Sold out |
| R Squared Ltd | 0 | $0 | 0.00% | −900−100.0% | Sold out |
| Menard Financial Group LLC | 0 | $0 | 0.00% | −798−100.0% | Sold out |
| Vista Private Wealth Partners. LLC | 0 | $0 | 0.00% | −750−100.0% | Sold out |
| North Star Investment Management Corp. | 0 | $0 | 0.00% | −650−100.0% | Sold out |
| Natixis | 0 | $0 | 0.00% | −578−100.0% | Sold out |
| Wingate Wealth Advisors, Inc. | 0 | $0 | 0.00% | −434−100.0% | Sold out |
| Transce3nd, LLC | 0 | $0 | 0.00% | −396−100.0% | Sold out |
| Hanson & Doremus Investment Management | 0 | $0 | 0.00% | −303−100.0% | Sold out |
| Nelson, Van Denburg & Campbell Wealth Management Group, LLC | 0 | $0 | 0.00% | −236−100.0% | Sold out |
| Longview Financial Advisors LLC | 0 | $0 | 0.00% | −187−100.0% | Sold out |
| GeoWealth Management, LLC | 0 | $0 | 0.00% | −140−100.0% | Sold out |
| Coppell Advisory Solutions LLC | 0 | $0 | 0.00% | −123−100.0% | Sold out |
| PFG Private Wealth Management, LLC | 0 | $0 | 0.00% | −83−100.0% | Sold out |
| Oarsman Capital, Inc. | 0 | $0 | 0.00% | −61−100.0% | Sold out |
| Venturi Wealth Management, LLC | 0 | $0 | 0.00% | −48−100.0% | Sold out |
| Sunbelt Securities, Inc. | 0 | $0 | 0.00% | −32−100.0% | Sold out |
| Bruce G. Allen Investments, LLC | 0 | $0 | 0.00% | −30−100.0% | Sold out |
| Park Place Capital Corp | 0 | $0 | 0.00% | −15−100.0% | Sold out |