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 |
|---|---|---|---|---|---|
| Louisbourg Investments Inc. | 155 | $3.66K | 0.00% | +155 | New |
| Atlantic Edge Private Wealth Management, LLC | 164 | $3.87K | 0.00% | +9+5.8% | Added |
| TD Private Client Wealth LLC | 166 | $3.92K | 0.00% | −15−8.3% | Reduced |
| Golden State Wealth Management, LLC | 166 | $3.92K | 0.00% | +8+5.1% | Added |
| Harbor Capital Advisors, Inc. | 170 | $4.00K | 0.00% | +170 | New |
| Mitsubishi UFJ Kokusai Asset Management Co., Ltd. | 170 | $4.01K | 0.00% | +9+5.6% | Added |
| Cromwell Holdings LLC | 171 | $4.04K | 0.00% | −120−41.2% | Reduced |
| Versant Capital Management, Inc | 174 | $4.11K | 0.00% | +108+163.6% | Added |
| Farmers & Merchants Investments Inc | 176 | $4.16K | 0.00% | +37+26.6% | Added |
| Medallion Wealth Advisors, LLC | 180 | $4.25K | 0.00% | +10+5.9% | Added |
| Sachetta, LLC | 194 | $4.58K | 0.00% | +171+743.5% | Added |
| Massmutual Trust Co FSB | 195 | $4.60K | 0.00% | +21+12.1% | Added |
| Bellevue Asset Management, LLC | 197 | $4.65K | 0.00% | +11+5.9% | Added |
| Old Second National Bank of Aurora | 212 | $5.00K | 0.00% | +12+6.0% | Added |
| Perkins Coie Trust Co | 219 | $5.17K | 0.00% | +8+3.8% | Added |
| Financial Management Professionals, Inc. | 228 | $5.38K | 0.00% | +13+6.0% | Added |
| DT Investment Partners, LLC | 230 | $5.43K | 0.00% | +12+5.5% | Added |
| Contravisory Investment Management, Inc. | 233 | $5.50K | 0.00% | −917−79.7% | Reduced |
| Union Bancaire Privee, UBP SA | 266 | $5.55K | 0.00% | +266 | New |
| Huntington National Bank | 268 | $6.33K | 0.00% | −999−78.8% | Reduced |
| Oakworth Capital, Inc. | 271 | $6.40K | 0.00% | +14+5.4% | Added |
| Gen-Wealth Partners Inc | 271 | $6.40K | 0.00% | +15+5.9% | Added |
| Deseret Mutual Benefit Administrators | 274 | $6.47K | 0.00% | +14+5.4% | Added |
| Harbour Investments, Inc. | 279 | $6.59K | 0.00% | +251+896.4% | Added |
| Glen Eagle Advisors, LLC | 286 | $6.75K | 0.00% | −27−8.6% | Reduced |
| Rossby Financial, LCC | 288 | $6.80K | 0.00% | +16+5.9% | Added |
| IFP Advisors, Inc | 289 | $6.82K | 0.00% | −187−39.3% | Reduced |
| Larson Financial Group LLC | 290 | $6.85K | 0.00% | −225−43.7% | Reduced |
| Parvin Asset Management, LLC | 293 | $6.92K | 0.01% | +18+6.5% | Added |
| Rakuten Securities, Inc. | 308 | $7.27K | 0.00% | +238+340.0% | Added |
| Bank of Jackson Hole Trust | 311 | $7.34K | 0.00% | −858−73.4% | Reduced |
| Moisand Fitzgerald Tamayo, LLC | 314 | $7.41K | 0.00% | +314 | New |
| CoreCap Advisors, LLC | 322 | $7.60K | 0.00% | +20+6.6% | Added |
| LRI Investments, LLC | 332 | $7.84K | 0.00% | +19+6.1% | Added |
| Winch Advisory Services, LLC | 365 | $8.62K | 0.00% | −175−32.4% | Reduced |
| Chesapeake Asset Management LLC | 369 | $8.71K | 0.01% | −181−32.9% | Reduced |
| Optimum Investment Advisors | 372 | $8.78K | 0.00% | −129−25.7% | Reduced |
| Colonial Trust Advisors | 373 | $8.81K | 0.00% | +71+23.5% | Added |
| Murphy & Mullick Capital Management Corp | 376 | $9.39K | 0.01% | +24+6.8% | Added |
| Atlas Capital Advisors LLC | 418 | $9.89K | 0.00% | +48+13.0% | Added |
| Covestor Ltd | 413 | $10.0K | 0.01% | −1,786−81.2% | Reduced |
| Parkside Financial Bank & Trust | 448 | $10.6K | 0.00% | +210+88.2% | Added |
| Beacon Capital Management, LLC | 449 | $10.6K | 0.00% | +25+5.9% | Added |
| BankPlus Trust Department | 478 | $11.3K | 0.00% | +80+20.1% | Added |
| Bartlett & Co. Wealth Management LLC | 484 | $11.4K | 0.00% | +18+3.9% | Added |
| Global Wealth Strategies & Associates | 493 | $11.6K | 0.00% | +28+6.0% | Added |
| Mendota Financial Group, LLC | 515 | $12.2K | 0.01% | +35+7.3% | Added |
| Twin Peaks Wealth Advisors, LLC | 478 | $12.3K | 0.00% | +478 | New |
| Ransom Advisory, Ltd | 524 | $12.4K | 0.01% | +24+4.8% | Added |
| N.E.W. Advisory Services LLC | 542 | $12.8K | 0.00% | +52+10.6% | Added |
| Ronald Blue Trust, Inc. | 556 | $13.1K | 0.00% | +109+24.4% | Added |
| Private Trust Co NA | 558 | $13.2K | 0.00% | −63−10.1% | Reduced |
| TD Waterhouse Canada Inc. | 574 | $13.7K | 0.00% | +39+7.3% | Added |
| GWM Advisors LLC | 604 | $14.3K | 0.00% | +39+6.9% | Added |
| Macquarie Group Ltd | 621 | $14.7K | 0.00% | +322+107.7% | Added |
| Evolution Advisers, Inc. | 636 | $15.0K | 0.01% | +36+6.0% | Added |
| First Command Advisory Services, Inc. | 695 | $16.4K | 0.00% | +39+5.9% | Added |
| Manchester Capital Management LLC | 725 | $17.1K | 0.00% | −602−45.4% | Reduced |
| Board of the Pension Protection Fund | 730 | $17.2K | 0.02% | +730 | New |
| West Oak Capital, LLC | 762 | $18.0K | 0.01% | +762 | New |
| Bokf, NA | 776 | $18.3K | 0.00% | +720+1,285.7% | Added |
| Y.D. More Investments Ltd | 779 | $18.4K | 0.00% | +355+83.7% | Added |
| Strategic Wealth Partners, Ltd. | 819 | $19.3K | 0.00% | +819 | New |
| Spire Wealth Management | 871 | $20.6K | 0.00% | −116−11.8% | Reduced |
| Crews Bank & Trust | 903 | $21.3K | 0.00% | +51+6.0% | Added |
| Clearstead Advisors, LLC | 920 | $21.7K | 0.00% | +493+115.5% | Added |
| Northwestern Mutual Wealth Management Co | 957 | $22.6K | 0.00% | +372+63.6% | Added |
| BDF-Gestion | 971 | $22.9K | 0.00% | +971 | New |
| National Pension Service | 995 | $23.5K | 0.00% | +995 | New |
| Shell Asset Management Co | 1,011 | $24.0K | 0.00% | +1,011 | New |
| SRS Capital Advisors, Inc. | 836 | $24.4K | 0.00% | +2+0.2% | Added |
| Atlantic Union Bankshares Corp | 1,075 | $25.4K | 0.00% | +1,075 | New |
| Whittier Trust Co of Nevada Inc | 1,081 | $25.5K | 0.00% | +61+6.0% | Added |
| Thurston, Springer, Miller, Herd & Titak, Inc. | 1,149 | $27.1K | 0.00% | +138+13.6% | Added |
| Pinnacle Bancorp, Inc. | 1,170 | $27.6K | 0.01% | +84+7.7% | Added |
| Brown Brothers Harriman & Co | 1,208 | $28.5K | 0.00% | +108+9.8% | Added |
| Steward Partners Investment Advisory, LLC | 1,210 | $28.6K | 0.00% | −1,188−49.5% | Reduced |
| HM Payson & Co | 1,226 | $28.9K | 0.00% | +47+4.0% | Added |
| BNP PARIBAS ASSET MANAGEMENT Holding S.A. | 1,407 | $33.0K | 0.00% | +1,407 | New |
| Global Retirement Partners, LLC | 1,417 | $33.5K | 0.00% | +1,417 | New |
| Bessemer Group Inc | 1,480 | $35.0K | 0.00% | +404+37.5% | Added |
| Nomura Asset Management Co Ltd | 1,514 | $35.7K | 0.00% | +114+8.1% | Added |
| 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 |
| Ofi Invest Asset Management | 2,051 | $41.3K | 0.00% | +2,051 | New |
| National Bank of Canada | 1,768 | $41.8K | 0.00% | +528+42.6% | Added |
| Asset Planning,Inc | 1,793 | $42.3K | 0.03% | +103+6.1% | Added |
| Smartleaf Asset Management LLC | 1,814 | $42.6K | 0.00% | +1,474+433.5% | Added |
| Riggs Asset Managment Co. Inc. | 1,931 | $45.6K | 0.01% | +1,931 | New |
| Central Trust Co | 1,952 | $46.1K | 0.00% | +130+7.1% | Added |
| Caldwell Trust Co | 1,954 | $46.1K | 0.00% | −64−3.2% | Reduced |
| Plante Moran Financial Advisors, LLC | 1,990 | $47.0K | 0.00% | +114+6.1% | Added |
| Leonteq Securities AG | 2,019 | $47.7K | 0.00% | +2,006+15,430.8% | Added |
| Loring Wolcott & Coolidge Fiduciary Advisors LLP | 2,174 | $51.3K | 0.00% | +124+6.0% | Added |
| Federation des caisses Desjardins du Quebec | 2,179 | $51.4K | 0.00% | +382+21.3% | Added |
| Signaturefd, LLC | 2,241 | $52.9K | 0.00% | +477+27.0% | Added |
| Fifth Third Bancorp | 2,324 | $54.9K | 0.00% | +129+5.9% | Added |
| FNY Investment Advisers, LLC | 2,400 | $56.0K | 0.02% | 00.0% | Unchanged |
| State of Wyoming | 2,758 | $65.1K | 0.01% | +2,758 | New |
| Farther Finance Advisors, LLC | 2,848 | $67.2K | 0.00% | −106−3.6% | Reduced |