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, Q2 2025
Institutional positions in Amentum Holdings, Inc. as of Jun 30, 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
- 461
- +48 vs. Q1 2025
- Shares held
- 200.3M
- +8.87M (+4.6%) vs. Q1 2025
- Total value
- $4.73B
- +$1.25B (+35.7%) vs. Q1 2025
- New holders
- 113
- 233 more added
- Sold out
- 65
- 100 more reduced
5 institutions that held it in Q1 2025 haven't filed for Q2 2025 yet. Not filing isn't selling, so they aren't counted as sold out or in the changes above.
Compare with Q1 2025: 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, Q2 2025
Shares, value and share of portfolio for each institution holding Amentum Holdings, Inc.; share changes are against Q1 2025.
| Institution | Shares | Value | % of portfolio | Change in shares | Action |
|---|---|---|---|---|---|
| Aristeia Capital LLC | 13,568 | $320.3K | 0.01% | +13,568 | New |
| Public Employees Retirement Association of Colorado | 13,525 | $319.0K | 0.00% | +757+5.9% | Added |
| Commerce Bank | 13,381 | $315.9K | 0.00% | +13,381 | New |
| Worldquant Millennium Advisors LLC | 13,358 | $315.4K | 0.00% | +13,358 | New |
| Quadrant Capital Group LLC | 13,058 | $308.3K | 0.01% | +1,389+11.9% | Added |
| Badgley Phelps Wealth Managers, LLC | 12,874 | $303.9K | 0.01% | +12,874 | New |
| Oppenheimer Asset Management Inc. | 12,783 | $301.8K | 0.00% | +12,783 | New |
| SFMG, LLC | 11,652 | $275.1K | 0.02% | +668+6.1% | Added |
| Whalen Wealth Management Inc. | 11,616 | $274.3K | 0.17% | +11,616 | New |
| PFG Investments, LLC | 11,283 | $266.4K | 0.02% | +11,283 | New |
| United Capital Financial Advisers, LLC | 11,228 | $265.1K | 0.00% | +11,228 | New |
| Evergreen Capital Management LLC | 11,196 | $264.3K | 0.01% | +11,196 | New |
| Lipe & Dalton | 11,202 | $264.0K | 0.14% | −172−1.5% | Reduced |
| Sterling Capital Management LLC | 10,993 | $259.5K | 0.00% | +2,758+33.5% | Added |
| Silvercrest Asset Management Group LLC | 10,653 | $251.5K | 0.00% | +653+6.5% | Added |
| Brown Advisory Inc | 10,608 | $250.5K | 0.00% | −1,057−9.1% | Reduced |
| Mesirow Financial Investment Management, Inc. | 10,515 | $248.3K | 0.00% | +10,515 | New |
| Washington Trust Advisors, Inc. | 10,379 | $245.0K | 0.02% | −43,467−80.7% | Reduced |
| Toth Financial Advisory Corp | 10,358 | $244.6K | 0.03% | +2,334+29.1% | Added |
| Diametric Capital, LP | 10,343 | $244.2K | 0.13% | +10,343 | New |
| Lido Advisors, LLC | 10,285 | $242.8K | 0.00% | −111−1.1% | Reduced |
| Allworth Financial LP | 10,256 | $242.1K | 0.00% | +1,990+24.1% | Added |
| M&T Bank Corp | 10,219 | $240.9K | 0.00% | +10,219 | New |
| Everett Harris & Co | 10,085 | $238.1K | 0.00% | −21,325−67.9% | Reduced |
| Janney Montgomery Scott LLC | 10,014 | $236.0K | 0.00% | −23,753−70.3% | Reduced |
| Lingohr & Partner Asset Management GmbH | 10,000 | $236.0K | 0.43% | +10,000 | New |
| Kentucky Retirement Systems | 9,971 | $235.4K | 0.01% | −141−1.4% | Reduced |
| ExodusPoint Capital Management, LP | 9,801 | $231.0K | 0.00% | +9,801 | New |
| Chung Wu Investment Group, LLC | 9,744 | $230.1K | 0.24% | +9,744 | New |
| Shufro Rose & Co LLC | 12,634 | $229.9K | 0.02% | −400−3.1% | Reduced |
| Aberdeen Wealth Management LLC | 9,491 | $224.1K | 0.15% | +9,491 | New |
| Toroso Investments, LLC | 9,430 | $222.6K | 0.00% | +9,430 | New |
| BOK Financial Private Wealth, Inc. | 9,367 | $221.2K | 0.01% | −2,345−20.0% | Reduced |
| Utah Retirement Systems | 9,183 | $216.8K | 0.00% | +9,183 | New |
| Oppenheimer & Co Inc | 9,163 | $216.3K | 0.00% | +9,163 | New |
| EntryPoint Capital, LLC | 9,103 | $214.9K | 0.11% | +9,103 | New |
| Cantor Fitzgerald, L. P. | 9,087 | $214.5K | 0.01% | −22,427−71.2% | Reduced |
| Ethic Inc. | 9,149 | $214.5K | 0.00% | +9,149 | New |
| Syon Capital LLC | 8,752 | $206.6K | 0.01% | +8,752 | New |
| Mraz, Amerine & Associates, Inc. | 8,550 | $201.9K | 0.03% | +8,550 | New |
| CX Institutional | 8,216 | $194.0K | 0.01% | +7,603+1,240.3% | Added |
| Canada Pension Plan Investment Board | 8,094 | $191.1K | 0.00% | +8,094 | New |
| Smithfield Trust Co | 7,890 | $186.0K | 0.01% | +34+0.4% | Added |
| SG Americas Securities, LLC | 7,882 | $186.0K | 0.00% | +7,882 | New |
| Intact Investment Management Inc. | 7,319 | $172.8K | 0.01% | +419+6.1% | Added |
| American National Bank | 6,788 | $160.3K | 0.02% | +388+6.1% | Added |
| KBC Group NV | 6,126 | $145.0K | 0.00% | −1,213−16.5% | Reduced |
| Point72 Asia (Singapore) Pte. Ltd. | 4,579 | $108.1K | 0.02% | +4,579 | New |
| GAMMA Investing LLC | 4,443 | $104.9K | 0.01% | +1,306+41.6% | Added |
| Tower Research Capital LLC (TRC) | 4,353 | $102.8K | 0.00% | +2,810+182.1% | Added |
| Quarry LP | 4,337 | $102.4K | 0.02% | +2,667+159.7% | Added |
| Glenmede Investment Management, LP | 4,325 | $102.1K | 0.00% | +4,325 | New |
| MAI Capital Management | 4,259 | $100.6K | 0.00% | +468+12.3% | Added |
| Parallel Advisors, LLC | 4,180 | $98.7K | 0.00% | +2,764+195.2% | Added |
| Umb Bank N A | 4,121 | $97.3K | 0.00% | +430+11.6% | Added |
| Essential Partners LLC | 4,042 | $95.4K | 0.04% | +4,042 | New |
| Whittier Trust Co | 3,997 | $94.4K | 0.00% | −269−6.3% | Reduced |
| Korea Investment CORP | 3,986 | $94.1K | 0.00% | +3,986 | New |
| STRS Ohio | 3,805 | $89.8K | 0.00% | +3,805 | New |
| Exchange Traded Concepts, LLC | 3,332 | $78.7K | 0.00% | +3,332 | New |
| CIBC Private Wealth Group, LLC | 3,239 | $76.5K | 0.00% | −1,364−29.6% | Reduced |
| Farther Finance Advisors, LLC | 2,848 | $67.2K | 0.00% | −106−3.6% | Reduced |
| State of Wyoming | 2,758 | $65.1K | 0.01% | +2,758 | New |
| FNY Investment Advisers, LLC | 2,400 | $56.0K | 0.02% | 00.0% | Unchanged |
| Fifth Third Bancorp | 2,324 | $54.9K | 0.00% | +129+5.9% | Added |
| Signaturefd, LLC | 2,241 | $52.9K | 0.00% | +477+27.0% | Added |
| Federation des caisses Desjardins du Quebec | 2,179 | $51.4K | 0.00% | +382+21.3% | Added |
| Loring Wolcott & Coolidge Fiduciary Advisors LLP | 2,174 | $51.3K | 0.00% | +124+6.0% | Added |
| Leonteq Securities AG | 2,019 | $47.7K | 0.00% | +2,006+15,430.8% | Added |
| Plante Moran Financial Advisors, LLC | 1,990 | $47.0K | 0.00% | +114+6.1% | Added |
| Caldwell Trust Co | 1,954 | $46.1K | 0.00% | −64−3.2% | Reduced |
| Central Trust Co | 1,952 | $46.1K | 0.00% | +130+7.1% | Added |
| Riggs Asset Managment Co. Inc. | 1,931 | $45.6K | 0.01% | +1,931 | New |
| Smartleaf Asset Management LLC | 1,814 | $42.6K | 0.00% | +1,474+433.5% | Added |
| Asset Planning,Inc | 1,793 | $42.3K | 0.03% | +103+6.1% | Added |
| National Bank of Canada | 1,768 | $41.8K | 0.00% | +528+42.6% | Added |
| Ofi Invest Asset Management | 2,051 | $41.3K | 0.00% | +2,051 | New |
| EverSource Wealth Advisors, LLC | 1,520 | $35.9K | 0.00% | −2,146−58.5% | Reduced |
| Caitong International Asset Management Co., Ltd | 1,520 | $35.9K | 0.03% | +1,426+1,517.0% | Added |
| Nomura Asset Management Co Ltd | 1,514 | $35.7K | 0.00% | +114+8.1% | Added |
| Bessemer Group Inc | 1,480 | $35.0K | 0.00% | +404+37.5% | Added |
| Global Retirement Partners, LLC | 1,417 | $33.5K | 0.00% | +1,417 | New |
| BNP PARIBAS ASSET MANAGEMENT Holding S.A. | 1,407 | $33.0K | 0.00% | +1,407 | New |
| HM Payson & Co | 1,226 | $28.9K | 0.00% | +47+4.0% | Added |
| Steward Partners Investment Advisory, LLC | 1,210 | $28.6K | 0.00% | −1,188−49.5% | Reduced |
| Brown Brothers Harriman & Co | 1,208 | $28.5K | 0.00% | +108+9.8% | Added |
| Pinnacle Bancorp, Inc. | 1,170 | $27.6K | 0.01% | +84+7.7% | Added |
| Thurston, Springer, Miller, Herd & Titak, Inc. | 1,149 | $27.1K | 0.00% | +138+13.6% | Added |
| Whittier Trust Co of Nevada Inc | 1,081 | $25.5K | 0.00% | +61+6.0% | Added |
| Atlantic Union Bankshares Corp | 1,075 | $25.4K | 0.00% | +1,075 | New |
| SRS Capital Advisors, Inc. | 836 | $24.4K | 0.00% | +2+0.2% | Added |
| Shell Asset Management Co | 1,011 | $24.0K | 0.00% | +1,011 | New |
| National Pension Service | 995 | $23.5K | 0.00% | +995 | New |
| BDF-Gestion | 971 | $22.9K | 0.00% | +971 | New |
| Northwestern Mutual Wealth Management Co | 957 | $22.6K | 0.00% | +372+63.6% | Added |
| Clearstead Advisors, LLC | 920 | $21.7K | 0.00% | +493+115.5% | Added |
| Crews Bank & Trust | 903 | $21.3K | 0.00% | +51+6.0% | Added |
| Spire Wealth Management | 871 | $20.6K | 0.00% | −116−11.8% | Reduced |
| Strategic Wealth Partners, Ltd. | 819 | $19.3K | 0.00% | +819 | New |
| Y.D. More Investments Ltd | 779 | $18.4K | 0.00% | +355+83.7% | Added |