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 |
|---|---|---|---|---|---|
| Dynamic Wealth Strategies, LLC | 0 | $0 | 0.00% | −993−100.0% | Sold out |
| Walleye Capital LLC | 0 | $0 | 0.00% | −830−100.0% | Sold out |
| Ostrum Asset Management | 0 | $0 | 0.00% | −808−100.0% | Sold out |
| Arrow Financial Corp | 0 | $0 | 0.00% | −795−100.0% | Sold out |
| Sentry Investment Management LLC | 0 | $0 | 0.00% | −548−100.0% | Sold out |
| True Wealth Design, LLC | 0 | $0 | 0.00% | −334−100.0% | Sold out |
| Capital Performance Advisors LLP | 0 | $0 | 0.00% | −323−100.0% | Sold out |
| Northwest Financial Advisors | 0 | $0 | 0.00% | −300−100.0% | Sold out |
| Quarry LP | 0 | $0 | 0.00% | −265−100.0% | Sold out |
| Catalyst Capital Advisors LLC | 0 | $0 | 0.00% | −226−100.0% | Sold out |
| Flputnam Investment Management Co | 0 | $0 | 0.00% | −1,400−100.0% | Sold out |
| Capital Advisors, Ltd. LLC | 0 | $0 | 0.00% | −161−100.0% | Sold out |
| Credit Agricole S A | 0 | $0 | 0.00% | −14,519−100.0% | Sold out |
| Johnson Financial Group, Inc. | 0 | $0 | 0.00% | −144−100.0% | Sold out |
| Operose Advisors LLC | 0 | $0 | 0.00% | −123−100.0% | Sold out |
| Chilton Capital Management LLC | 0 | $0 | 0.00% | −105−100.0% | Sold out |
| Tortoise Investment Management, LLC | 0 | $0 | 0.00% | −105−100.0% | Sold out |
| Pineridge Advisors LLC | 0 | $0 | 0.00% | −100−100.0% | Sold out |
| Aspire Private Capital, LLC | 0 | $0 | 0.00% | −97−100.0% | Sold out |
| Laurel Wealth Advisors LLC | 0 | $0 | 0.00% | −50−100.0% | Sold out |
| GW&K Investment Management, LLC | 0 | $0 | 0.00% | −50−100.0% | Sold out |
| Meeder Asset Management Inc | 0 | $0 | 0.00% | −30−100.0% | Sold out |
| GHP Investment Advisors, Inc. | 0 | $0 | 0.00% | −26−100.0% | Sold out |
| Cape Investment Advisory, Inc. | 0 | $0 | 0.00% | −23−100.0% | Sold out |
| Abound Wealth Management | 0 | $0 | 0.00% | −18−100.0% | Sold out |
| CVA Family Office, LLC | 0 | $0 | 0.00% | −8−100.0% | Sold out |
| Montag A & Associates Inc | 0 | $0 | 0.00% | −6−100.0% | Sold out |
| Valued Wealth Advisors LLC | 0 | $0 | 0.00% | −3−100.0% | Sold out |
| Raleigh Capital Management Inc. | 0 | $0 | 0.00% | −1−100.0% | Sold out |
| NVWM, LLC | 0 | $0 | 0.00% | −1−100.0% | Sold out |
| Clayton Partners LLC | 0 | $0 | 0.00% | −20,138−100.0% | Sold out |
| Penserra Capital Management LLC | 0 | $0 | 0.00% | −468−100.0% | Sold out |
| Avion Wealth | 0 | $0 | 0.00% | −8−100.0% | Sold out |
| BDF-Gestion | 0 | $0 | 0.00% | −18,124−100.0% | Sold out |
| GYL Financial Synergies, LLC | – | – | – | – | Not filed |
| Northwest Investment Counselors, LLC | – | – | – | – | Not filed |
| FinTrust Capital Advisors, LLC | – | – | – | – | Not filed |