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, Q3 2024
Institutional positions in Amentum Holdings, Inc. as of Sep 30, 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
- 492
- +492 vs. Q2 2024
- Shares held
- 100.6M
- +100.6M vs. Q2 2024
- Total value
- $3.23B
- +$3.23B vs. Q2 2024
- New holders
- 492
- 0 more added
- Sold out
- 0
- 0 more reduced
Compare with Q2 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, Q3 2024
Shares, value and share of portfolio for each institution holding Amentum Holdings, Inc.; share changes are against Q2 2024.
| Institution | Shares | Value | % of portfolio | Change in shares | Action |
|---|---|---|---|---|---|
| Pettee Investors, Inc. | 8,835 | $284.9K | 0.14% | +8,835 | New |
| Kentucky Retirement Systems | 8,906 | $287.2K | 0.01% | +8,906 | New |
| Wealthfront Advisers LLC | 9,024 | $291.0K | 0.00% | +9,024 | New |
| GYL Financial Synergies, LLC | 9,029 | $291.2K | 0.02% | +9,029 | New |
| Baldwin Investment Management, LLC | 9,215 | $297.2K | 0.04% | +9,215 | New |
| Ontario Teachers Pension Plan Board | 9,254 | $298.4K | 0.00% | +9,254 | New |
| FRG Family Wealth Advisors LLC | 9,315 | $300.4K | 0.05% | +9,315 | New |
| Illinois Municipal Retirement Fund | 9,345 | $301.4K | 0.00% | +9,345 | New |
| Pacer Advisors, Inc. | 9,379 | $302.5K | 0.00% | +9,379 | New |
| Heritage Family Offices, LLP | 9,544 | $307.8K | 0.16% | +9,544 | New |
| Stratos Wealth Partners, LTD. | 9,591 | $309.3K | 0.00% | +9,591 | New |
| CIBC World Markets Corp | 9,718 | $313.4K | 0.00% | +9,718 | New |
| Sandy Spring Bank | 9,856 | $317.9K | 0.01% | +9,856 | New |
| CWM, LLC | 9,946 | $321.0K | 0.00% | +9,946 | New |
| Needham Investment Management LLC | 10,000 | $322.5K | 0.02% | +10,000 | New |
| Magnetar Financial LLC | 10,073 | $324.9K | 0.01% | +10,073 | New |
| Silvercrest Asset Management Group LLC | 10,080 | $325.1K | 0.00% | +10,080 | New |
| CBOE Vest Financial, LLC | 10,115 | $326.2K | 0.01% | +10,115 | New |
| Keebeck Wealth Management, LLC | 10,297 | $332.1K | 0.05% | +10,297 | New |
| Rafferty Asset Management, LLC | 10,498 | $338.6K | 0.00% | +10,498 | New |
| Aberdeen Wealth Management LLC | 10,582 | $341.3K | 0.22% | +10,582 | New |
| Westwood Holdings Group Inc. | 10,707 | $345.3K | 0.00% | +10,707 | New |
| Oregon Public Employees Retirement Fund | 10,750 | $346.7K | 0.01% | +10,750 | New |
| Brinker Capital Investments, LLC | 10,922 | $352.2K | 0.00% | +10,922 | New |
| Orion Portfolio Solutions, LLC | 10,922 | $352.2K | 0.00% | +10,922 | New |
| SFMG, LLC | 10,990 | $354.4K | 0.03% | +10,990 | New |
| Bokf, NA | 14,022 | $356.2K | 0.01% | +14,022 | New |
| Lipe & Dalton | 11,374 | $367.0K | 0.19% | +11,374 | New |
| KCM Investment Advisors LLC | 11,441 | $369.0K | 0.01% | +11,441 | New |
| Cresset Asset Management, LLC | 11,700 | $377.3K | 0.00% | +11,700 | New |
| Advisor Group Holdings, Inc. | 12,182 | $392.9K | 0.00% | +12,182 | New |
| Evoke Wealth, LLC | 12,296 | $396.5K | 0.01% | +12,296 | New |
| Central Trust Co | 12,386 | $399.4K | 0.01% | +12,386 | New |
| Evercore Wealth Management, LLC | 12,476 | $402.4K | 0.01% | +12,476 | New |
| KBC Group NV | 12,836 | $414.0K | 0.00% | +12,836 | New |
| Sumitomo Mitsui DS Asset Management Company, Ltd | 12,850 | $414.4K | 0.00% | +12,850 | New |
| Signature Estate & Investment Advisors LLC | 13,055 | $421.0K | 0.01% | +13,055 | New |
| BOK Financial Private Wealth, Inc. | 13,215 | $426.2K | 0.03% | +13,215 | New |
| Lido Advisors, LLC | 13,226 | $426.5K | 0.00% | +13,226 | New |
| Diametric Capital, LP | 13,352 | $430.6K | 0.21% | +13,352 | New |
| Private Advisor Group, LLC | 13,435 | $433.3K | 0.00% | +13,435 | New |
| Cahaba Wealth Management, Inc. | 13,643 | $440.0K | 0.04% | +13,643 | New |
| Hilton Capital Management, LLC | 13,738 | $443.1K | 0.03% | +13,738 | New |
| MML Investors Services, LLC | 13,923 | $449.0K | 0.00% | +13,923 | New |
| Baird Financial Group, Inc. | 13,944 | $449.7K | 0.00% | +13,944 | New |
| Swiss Life Asset Management Ltd | 16,362 | $452.6K | 0.01% | +16,362 | New |
| Nebula Research & Development LLC | 14,246 | $459.4K | 0.05% | +14,246 | New |
| Brown Advisory Inc | 14,252 | $459.6K | 0.00% | +14,252 | New |
| Man Group plc | 14,475 | $466.8K | 0.00% | +14,475 | New |
| Yousif Capital Management, LLC | 14,479 | $466.9K | 0.01% | +14,479 | New |
| Envestnet Portfolio Solutions, Inc. | 14,491 | $467.3K | 0.00% | +14,491 | New |
| Chesapeake Asset Management LLC | 14,673 | $473.2K | 0.41% | +14,673 | New |
| Atria Investments LLC | 14,821 | $478.0K | 0.01% | +14,821 | New |
| Paralel Advisors LLC | 14,849 | $478.9K | 0.02% | +14,849 | New |
| Nissay Asset Management Corp | 15,092 | $486.7K | 0.00% | +15,092 | New |
| Strategic Advisors LLC | 15,145 | $488.4K | 0.09% | +15,145 | New |
| Savant Capital, LLC | 15,278 | $492.7K | 0.00% | +15,278 | New |
| ING Groep NV | 16,746 | $495.0K | 0.00% | +16,746 | New |
| Cetera Investment Advisers | 15,368 | $495.6K | 0.00% | +15,368 | New |
| A. D. Beadell Investment Counsel, Inc. | 15,580 | $502.0K | 0.40% | +15,580 | New |
| TCW Group Inc | 15,569 | $502.1K | 0.00% | +15,569 | New |
| STRS Ohio | 15,634 | $504.2K | 0.00% | +15,634 | New |
| Garrett Investment Advisors LLC | 15,646 | $504.6K | 0.05% | +15,646 | New |
| Bank of Nova Scotia | 15,667 | $505.3K | 0.00% | +15,667 | New |
| Westover Capital Advisors, LLC | 15,712 | $506.7K | 0.10% | +15,712 | New |
| Xponance, Inc. | 16,454 | $530.6K | 0.01% | +16,454 | New |
| Ionic Capital Management LLC | 16,622 | $536.1K | 0.32% | +16,622 | New |
| New York Life Investment Management LLC | 16,663 | $537.4K | 0.01% | +16,663 | New |
| Legato Capital Management LLC | 16,923 | $545.8K | 0.07% | +16,923 | New |
| Intrinsic Value Partners, LLC | 16,973 | $547.4K | 0.55% | +16,973 | New |
| Armstrong Henry H Associates Inc | 17,081 | $550.9K | 0.05% | +17,081 | New |
| ProShare Advisors LLC | 17,122 | $552.2K | 0.00% | +17,122 | New |
| Greenwood Capital Associates LLC | 17,360 | $559.9K | 0.07% | +17,360 | New |
| Twin Capital Management Inc | 17,608 | $567.9K | 0.06% | +17,608 | New |
| Red Spruce Capital, LLC | 17,715 | $571.3K | 0.26% | +17,715 | New |
| Massmutual Trust Co FSB | 17,830 | $575.0K | 0.02% | +17,830 | New |
| CIBC Asset Management Inc | 18,217 | $587.5K | 0.00% | +18,217 | New |
| Kirtland Hills Capital Management, LLC | 18,542 | $598.0K | 0.33% | +18,542 | New |
| Stonegate Investment Group, LLC | 18,844 | $607.7K | 0.02% | +18,844 | New |
| Cushing Asset Management, LP | 19,000 | $612.8K | 0.05% | +19,000 | New |
| Tredje AP-fonden | 19,626 | $632.9K | 0.01% | +19,626 | New |
| Cambridge Investment Research Advisors, Inc. | 19,735 | $636.0K | 0.00% | +19,735 | New |
| Ninety One SA (PTY) Ltd | 19,965 | $643.9K | 0.14% | +19,965 | New |
| Utah Retirement Systems | 20,585 | $663.9K | 0.01% | +20,585 | New |
| Pine Valley Investments Ltd Liability Co | 20,993 | $677.0K | 0.05% | +20,993 | New |
| Brevan Howard Capital Management LP | 21,049 | $678.8K | 0.03% | +21,049 | New |
| State of Alaska, Department of Revenue | 21,767 | $701.0K | 0.01% | +21,767 | New |
| Occidental Asset Management, LLC | 22,426 | $723.2K | 0.12% | +22,426 | New |
| Royce & Associates LP | 22,500 | $725.6K | 0.01% | +22,500 | New |
| IFM Investors Pty Ltd | 22,603 | $728.9K | 0.01% | +22,603 | New |
| Running Oak Capital LLC | 23,805 | $767.7K | 0.10% | +23,805 | New |
| Toroso Investments, LLC | 23,827 | $768.4K | 0.01% | +23,827 | New |
| Peak Asset Management, LLC | 24,000 | $774.0K | 0.15% | +24,000 | New |
| Quest Partners LLC | 24,314 | $784.1K | 0.07% | +24,314 | New |
| Captrust Financial Advisors | 24,411 | $787.3K | 0.00% | +24,411 | New |
| Bryn Mawr Trust Co | 24,490 | $789.8K | 0.01% | +24,490 | New |
| TrinityPoint Wealth, LLC | 24,499 | $790.1K | 0.11% | +24,499 | New |
| Sit Investment Associates Inc | 24,700 | $797.0K | 0.02% | +24,700 | New |
| Compass Wealth Management LLC | 24,937 | $804.2K | 0.19% | +24,937 | New |
| Ancora Advisors, LLC | 25,415 | $819.6K | 0.02% | +25,415 | New |