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, Q4 2024
Institutional positions in Amentum Holdings, Inc. as of Dec 31, 2024. 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
- 451
- −38 vs. Q3 2024
- Shares held
- 165.3M
- +64.8M (+64.4%) vs. Q3 2024
- Total value
- $3.48B
- +$250.9M (+7.8%) vs. Q3 2024
- New holders
- 145
- 94 more added
- Sold out
- 183
- 158 more reduced
3 institutions that held it in Q3 2024 haven't filed for Q4 2024 yet. Not filing isn't selling, so they aren't counted as sold out or in the changes above.
Compare with Q3 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, Q4 2024
Shares, value and share of portfolio for each institution holding Amentum Holdings, Inc.; share changes are against Q3 2024.
| Institution | Shares | Value | % of portfolio | Change in shares | Action |
|---|---|---|---|---|---|
| Mitsubishi UFJ Trust & Banking Corp | 0 | $0 | 0.00% | −31,324−100.0% | Sold out |
| Intech Investment Management LLC | 0 | $0 | 0.00% | −31,245−100.0% | Sold out |
| United Asset Strategies, Inc. | 0 | $0 | 0.00% | −28,770−100.0% | Sold out |
| Retirement Systems of Alabama | 0 | $0 | 0.00% | −27,324−100.0% | Sold out |
| Soros Fund Management LLCSuperinvestorSoros Fund Management | 0 | $0 | 0.00% | −27,001−100.0% | Sold out |
| Czech National Bank | 0 | $0 | 0.00% | −25,507−100.0% | Sold out |
| Compass Wealth Management LLC | 0 | $0 | 0.00% | −24,937−100.0% | Sold out |
| Running Oak Capital LLC | 0 | $0 | 0.00% | −23,805−100.0% | Sold out |
| IFM Investors Pty Ltd | 0 | $0 | 0.00% | −22,603−100.0% | Sold out |
| Occidental Asset Management, LLC | 0 | $0 | 0.00% | −22,426−100.0% | Sold out |
| Brevan Howard Capital Management LP | 0 | $0 | 0.00% | −21,049−100.0% | Sold out |
| Ninety One SA (PTY) Ltd | 0 | $0 | 0.00% | −19,965−100.0% | Sold out |
| Tredje AP-fonden | 0 | $0 | 0.00% | −19,626−100.0% | Sold out |
| Cushing Asset Management, LP | 0 | $0 | 0.00% | −19,000−100.0% | Sold out |
| Stonegate Investment Group, LLC | 0 | $0 | 0.00% | −18,844−100.0% | Sold out |
| Twin Capital Management Inc | 0 | $0 | 0.00% | −17,608−100.0% | Sold out |
| Greenwood Capital Associates LLC | 0 | $0 | 0.00% | −17,360−100.0% | Sold out |
| Legato Capital Management LLC | 0 | $0 | 0.00% | −16,923−100.0% | Sold out |
| New York Life Investment Management LLC | 0 | $0 | 0.00% | −16,663−100.0% | Sold out |
| Ionic Capital Management LLC | 0 | $0 | 0.00% | −16,622−100.0% | Sold out |
| Xponance, Inc. | 0 | $0 | 0.00% | −16,454−100.0% | Sold out |
| Westover Capital Advisors, LLC | 0 | $0 | 0.00% | −15,712−100.0% | Sold out |
| Bank of Nova Scotia | 0 | $0 | 0.00% | −15,667−100.0% | Sold out |
| Garrett Investment Advisors LLC | 0 | $0 | 0.00% | −15,646−100.0% | Sold out |
| STRS Ohio | 0 | $0 | 0.00% | −15,634−100.0% | Sold out |
| TCW Group Inc | 0 | $0 | 0.00% | −15,569−100.0% | Sold out |
| ING Groep NV | 0 | $0 | 0.00% | −16,746−100.0% | Sold out |
| Savant Capital, LLC | 0 | $0 | 0.00% | −15,278−100.0% | Sold out |
| Nissay Asset Management Corp | 0 | $0 | 0.00% | −15,092−100.0% | Sold out |
| Atria Investments LLC | 0 | $0 | 0.00% | −14,821−100.0% | Sold out |
| Envestnet Portfolio Solutions, Inc. | 0 | $0 | 0.00% | −14,491−100.0% | Sold out |
| Man Group plc | 0 | $0 | 0.00% | −14,475−100.0% | Sold out |
| Nebula Research & Development LLC | 0 | $0 | 0.00% | −14,246−100.0% | Sold out |
| Swiss Life Asset Management Ltd | 0 | $0 | 0.00% | −16,362−100.0% | Sold out |
| MML Investors Services, LLC | 0 | $0 | 0.00% | −13,923−100.0% | Sold out |
| Private Advisor Group, LLC | 0 | $0 | 0.00% | −13,435−100.0% | Sold out |
| Diametric Capital, LP | 0 | $0 | 0.00% | −13,352−100.0% | Sold out |
| Signature Estate & Investment Advisors LLC | 0 | $0 | 0.00% | −13,055−100.0% | Sold out |
| Sumitomo Mitsui DS Asset Management Company, Ltd | 0 | $0 | 0.00% | −12,850−100.0% | Sold out |
| Cresset Asset Management, LLC | 0 | $0 | 0.00% | −11,700−100.0% | Sold out |
| KCM Investment Advisors LLC | 0 | $0 | 0.00% | −11,441−100.0% | Sold out |
| Brinker Capital Investments, LLC | 0 | $0 | 0.00% | −10,922−100.0% | Sold out |
| Orion Portfolio Solutions, LLC | 0 | $0 | 0.00% | −10,922−100.0% | Sold out |
| Aberdeen Wealth Management LLC | 0 | $0 | 0.00% | −10,582−100.0% | Sold out |
| Rafferty Asset Management, LLC | 0 | $0 | 0.00% | −10,498−100.0% | Sold out |
| Keebeck Wealth Management, LLC | 0 | $0 | 0.00% | −10,297−100.0% | Sold out |
| CBOE Vest Financial, LLC | 0 | $0 | 0.00% | −10,115−100.0% | Sold out |
| Magnetar Financial LLC | 0 | $0 | 0.00% | −10,073−100.0% | Sold out |
| Needham Investment Management LLC | 0 | $0 | 0.00% | −10,000−100.0% | Sold out |
| CIBC World Markets Corp | 0 | $0 | 0.00% | −9,718−100.0% | Sold out |
| Stratos Wealth Partners, LTD. | 0 | $0 | 0.00% | −9,591−100.0% | Sold out |
| Heritage Family Offices, LLP | 0 | $0 | 0.00% | −9,544−100.0% | Sold out |
| Pacer Advisors, Inc. | 0 | $0 | 0.00% | −9,379−100.0% | Sold out |
| Illinois Municipal Retirement Fund | 0 | $0 | 0.00% | −9,345−100.0% | Sold out |
| FRG Family Wealth Advisors LLC | 0 | $0 | 0.00% | −9,315−100.0% | Sold out |
| Ontario Teachers Pension Plan Board | 0 | $0 | 0.00% | −9,254−100.0% | Sold out |
| Baldwin Investment Management, LLC | 0 | $0 | 0.00% | −9,215−100.0% | Sold out |
| Wealthfront Advisers LLC | 0 | $0 | 0.00% | −9,024−100.0% | Sold out |
| Kentucky Retirement Systems | 0 | $0 | 0.00% | −8,906−100.0% | Sold out |
| Pettee Investors, Inc. | 0 | $0 | 0.00% | −8,835−100.0% | Sold out |
| Coastline Trust Co | 0 | $0 | 0.00% | −8,805−100.0% | Sold out |
| Independent Advisor Alliance | 0 | $0 | 0.00% | −8,780−100.0% | Sold out |
| Allianz Asset Management GmbH | 0 | $0 | 0.00% | −8,772−100.0% | Sold out |
| Stratos Wealth Advisors, LLC | 0 | $0 | 0.00% | −8,758−100.0% | Sold out |
| Kestra Advisory Services, LLC | 0 | $0 | 0.00% | −8,149−100.0% | Sold out |
| Mizuho Securities USA LLC | 0 | $0 | 0.00% | −8,119−100.0% | Sold out |
| Avantax Advisory Services, Inc. | 0 | $0 | 0.00% | −7,983−100.0% | Sold out |
| Dynasty Wealth Management, LLC | 0 | $0 | 0.00% | −7,897−100.0% | Sold out |
| Hennion & Walsh Asset Management, Inc. | 0 | $0 | 0.00% | −7,765−100.0% | Sold out |
| Monarch Capital Management Inc | 0 | $0 | 0.00% | −7,715−100.0% | Sold out |
| Cyrus J. Lawrence, LLC | 0 | $0 | 0.00% | −7,700−100.0% | Sold out |
| Aster Capital Management (DIFC) Ltd | 0 | $0 | 0.00% | −7,554−100.0% | Sold out |
| M&T Bank Corp | 0 | $0 | 0.00% | −7,531−100.0% | Sold out |
| Guggenheim Capital LLC | 0 | $0 | 0.00% | −7,521−100.0% | Sold out |
| BayBridge Capital Group, LLC | 0 | $0 | 0.00% | −7,484−100.0% | Sold out |
| BNP PARIBAS ASSET MANAGEMENT Holding S.A. | 0 | $0 | 0.00% | −7,465−100.0% | Sold out |
| GTS Securities LLC | 0 | $0 | 0.00% | −7,365−100.0% | Sold out |
| Metis Global Partners, LLC | 0 | $0 | 0.00% | −7,246−100.0% | Sold out |
| Ballentine Partners, LLC | 0 | $0 | 0.00% | −7,215−100.0% | Sold out |
| Advisors Management Group Inc | 0 | $0 | 0.00% | −7,052−100.0% | Sold out |
| Schechter Investment Advisors, LLC | 0 | $0 | 0.00% | −8,983−100.0% | Sold out |
| Dover Advisors, LLC | 0 | $0 | 0.00% | −6,797−100.0% | Sold out |
| McDonald Partners LLC | 0 | $0 | 0.00% | −6,726−100.0% | Sold out |
| Eagle Rock Investment Company, LLC | 0 | $0 | 0.00% | −6,639−100.0% | Sold out |
| Commerce Bank | 0 | $0 | 0.00% | −6,623−100.0% | Sold out |
| RMB Capital Management, LLC | 0 | $0 | 0.00% | −6,609−100.0% | Sold out |
| Grandfield & Dodd, LLC | 0 | $0 | 0.00% | −6,473−100.0% | Sold out |
| SRN Advisors, LLC | 0 | $0 | 0.00% | −6,460−100.0% | Sold out |
| Lakeview Capital Partners, LLC | 0 | $0 | 0.00% | −6,448−100.0% | Sold out |
| Dorsey & Whitney Trust CO LLC | 0 | $0 | 0.00% | −6,384−100.0% | Sold out |
| Cim Investment Mangement Inc | 0 | $0 | 0.00% | −6,362−100.0% | Sold out |
| Sheaff Brock Investment Advisors, LLC | 0 | $0 | 0.00% | −6,210−100.0% | Sold out |
| New Mexico Educational Retirement Board | 0 | $0 | 0.00% | −6,087−100.0% | Sold out |
| Energy Income Partners, LLC | 0 | $0 | 0.00% | −5,858−100.0% | Sold out |
| HGK Asset Management Inc | 0 | $0 | 0.00% | −5,677−100.0% | Sold out |
| Convergence Investment Partners, LLC | 0 | $0 | 0.00% | −4,052−100.0% | Sold out |
| Northwestern Mutual Investment Management Company, LLC | 0 | $0 | 0.00% | −3,968−100.0% | Sold out |
| Edmond de Rothschild Holding S.A. | 0 | $0 | 0.00% | −2,909−100.0% | Sold out |
| Vestcor Inc | 0 | $0 | 0.00% | −2,499−100.0% | Sold out |
| Ameritas Investment Partners, Inc. | 0 | $0 | 0.00% | −1,318−100.0% | Sold out |