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 2025
Institutional positions in Amentum Holdings, Inc. as of Dec 31, 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
- 483
- +31 vs. Q3 2025
- Shares held
- 203.8M
- +10.7M (+5.5%) vs. Q3 2025
- Total value
- $5.64B
- +$1.01B (+21.9%) vs. Q3 2025
- New holders
- 88
- 132 more added
- Sold out
- 57
- 159 more reduced
10 institutions that held it in Q3 2025 haven't filed for Q4 2025 yet. Not filing isn't selling, so they aren't counted as sold out or in the changes above.
Compare with Q3 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, Q4 2025
Shares, value and share of portfolio for each institution holding Amentum Holdings, Inc.; share changes are against Q3 2025.
| Institution | Shares | Value | % of portfolio | Change in shares | Action |
|---|---|---|---|---|---|
| HM Payson & Co | 1,941 | $56.3K | 0.00% | +715+58.3% | Added |
| Vermillion & White Wealth Management Group, LLC | 1,905 | $55.2K | 0.03% | 00.0% | Unchanged |
| EverSource Wealth Advisors, LLC | 1,853 | $53.7K | 0.00% | +481+35.1% | Added |
| BNP PARIBAS ASSET MANAGEMENT Holding S.A. | 1,824 | $53.0K | 0.00% | +514+39.2% | Added |
| Asset Planning,Inc | 1,793 | $52.0K | 0.04% | 00.0% | Unchanged |
| Bessemer Group Inc | 1,739 | $50.0K | 0.00% | −82−4.5% | Reduced |
| Atlas Capital Advisors LLC | 1,662 | $48.2K | 0.01% | +1,662 | New |
| Sound Income Strategies, LLC | 1,363 | $47.4K | 0.00% | +425+45.3% | Added |
| Global Retirement Partners, LLC | 1,539 | $44.6K | 0.00% | +133+9.5% | Added |
| Federation des caisses Desjardins du Quebec | 1,485 | $43.1K | 0.00% | −360−19.5% | Reduced |
| Nomura Asset Management Co Ltd | 1,449 | $42.0K | 0.00% | 00.0% | Unchanged |
| Salomon & Ludwin, LLC | 1,305 | $41.0K | 0.00% | +648+98.6% | Added |
| Atlantic Union Bankshares Corp | 1,377 | $39.9K | 0.00% | −98−6.6% | Reduced |
| Financial Consulate, Inc | 1,300 | $37.7K | 0.01% | +1,300 | New |
| Brown Brothers Harriman & Co | 1,208 | $35.0K | 0.00% | 00.0% | Unchanged |
| Whittier Trust Co of Nevada Inc | 1,081 | $34.1K | 0.00% | 00.0% | Unchanged |
| Korea Investment CORP | 1,166 | $33.8K | 0.00% | 00.0% | Unchanged |
| Spire Wealth Management | 1,055 | $30.6K | 0.00% | −79−7.0% | Reduced |
| National Bank of Canada | 1,032 | $29.9K | 0.00% | −346−25.1% | Reduced |
| Strategic Wealth Partners, Ltd. | 898 | $26.0K | 0.00% | +79+9.6% | Added |
| Quent Capital, LLC | 858 | $24.9K | 0.00% | +33+4.0% | Added |
| Clearstead Advisors, LLC | 804 | $23.3K | 0.00% | −113−12.3% | Reduced |
| Keating Financial Advisory Services, Inc. | 802 | $23.3K | 0.00% | +802 | New |
| Ronald Blue Trust, Inc. | 794 | $23.0K | 0.00% | −410−34.1% | Reduced |
| Northwestern Mutual Wealth Management Co | 757 | $22.0K | 0.00% | −272−26.4% | Reduced |
| Steward Partners Investment Advisory, LLC | 754 | $21.9K | 0.00% | +198+35.6% | Added |
| BDF-Gestion | 752 | $21.8K | 0.00% | −51−6.4% | Reduced |
| Chung Wu Investment Group, LLC | 744 | $21.6K | 0.02% | 00.0% | Unchanged |
| First Command Advisory Services, Inc. | 695 | $20.2K | 0.00% | 00.0% | Unchanged |
| Root Financial Partners, LLC | 694 | $20.1K | 0.00% | −99−12.5% | Reduced |
| Pinnacle Bancorp, Inc. | 680 | $19.7K | 0.01% | −4−0.6% | Reduced |
| Tower Research Capital LLC (TRC) | 677 | $19.6K | 0.00% | −101−13.0% | Reduced |
| Los Angeles Capital Management LLC | 893 | $19.6K | 0.00% | +893 | New |
| Parvin Asset Management, LLC | 643 | $18.6K | 0.02% | +100+18.4% | Added |
| Flagship Harbor Advisors, LLC | 626 | $18.2K | 0.00% | +626 | New |
| Evolution Advisers, Inc. | 636 | $18.0K | 0.01% | 00.0% | Unchanged |
| GWM Advisors LLC | 598 | $17.3K | 0.00% | −3−0.5% | Reduced |
| Parkside Financial Bank & Trust | 572 | $16.6K | 0.00% | −17−2.9% | Reduced |
| Private Trust Co NA | 566 | $16.4K | 0.00% | 00.0% | Unchanged |
| N.E.W. Advisory Services LLC | 542 | $15.7K | 0.00% | 00.0% | Unchanged |
| Colonial Trust Advisors | 538 | $15.6K | 0.00% | +55+11.4% | Added |
| TD Waterhouse Canada Inc. | 530 | $15.4K | 0.00% | −49−8.5% | Reduced |
| Rothschild Investment LLC | 525 | $15.2K | 0.00% | +385+275.0% | Added |
| Mendota Financial Group, LLC | 515 | $14.9K | 0.01% | 00.0% | Unchanged |
| Thurston, Springer, Miller, Herd & Titak, Inc. | 511 | $14.8K | 0.01% | +246+92.8% | Added |
| Global Wealth Strategies & Associates | 493 | $14.3K | 0.00% | 00.0% | Unchanged |
| Sfam, LLC | 487 | $14.1K | 0.01% | +487 | New |
| Bartlett & Co. Wealth Management LLC | 484 | $14.0K | 0.00% | 00.0% | Unchanged |
| IFP Advisors, Inc | 432 | $12.5K | 0.00% | +106+32.5% | Added |
| Covestor Ltd | 409 | $12.0K | 0.01% | 00.0% | Unchanged |
| Basecamp Wealth Advisors LLC | 399 | $11.6K | 0.00% | +399 | New |
| Chesapeake Asset Management LLC | 369 | $10.7K | 0.01% | 00.0% | Unchanged |
| Winch Advisory Services, LLC | 365 | $10.6K | 0.00% | 00.0% | Unchanged |
| CoreCap Advisors, LLC | 364 | $10.6K | 0.00% | +56+18.2% | Added |
| Larson Financial Group LLC | 354 | $10.3K | 0.00% | +71+25.1% | Added |
| Y.D. More Investments Ltd | 338 | $9.82K | 0.00% | −182−35.0% | Reduced |
| LRI Investments, LLC | 332 | $9.63K | 0.00% | 00.0% | Unchanged |
| Moisand Fitzgerald Tamayo, LLC | 314 | $9.11K | 0.00% | 00.0% | Unchanged |
| Rossby Financial, LCC | 288 | $8.35K | 0.00% | 00.0% | Unchanged |
| Murphy & Mullick Capital Management Corp | 283 | $8.21K | 0.01% | −93−24.7% | Reduced |
| Laurel Wealth Advisors LLC | 275 | $7.97K | 0.00% | +275 | New |
| Steigerwald, Gordon & Koch Inc. | 272 | $7.89K | 0.00% | 00.0% | Unchanged |
| Oakworth Capital, Inc. | 271 | $7.86K | 0.00% | 00.0% | Unchanged |
| AdvisorNet Financial, Inc | 257 | $7.45K | 0.00% | +235+1,068.2% | Added |
| Torren Management, LLC | 243 | $7.05K | 0.00% | +243 | New |
| DT Investment Partners, LLC | 230 | $6.67K | 0.00% | 00.0% | Unchanged |
| Financial Management Professionals, Inc. | 228 | $6.61K | 0.00% | 00.0% | Unchanged |
| Glen Eagle Advisors, LLC | 226 | $6.55K | 0.00% | −6−2.6% | Reduced |
| Perkins Coie Trust Co | 219 | $6.35K | 0.00% | 00.0% | Unchanged |
| Old Second National Bank of Aurora | 212 | $6.15K | 0.00% | 00.0% | Unchanged |
| Bellevue Asset Management, LLC | 197 | $5.71K | 0.00% | 00.0% | Unchanged |
| Massmutual Trust Co FSB | 195 | $5.66K | 0.00% | 00.0% | Unchanged |
| Central Trust Co | 194 | $5.63K | 0.00% | −1,340−87.4% | Reduced |
| Sachetta, LLC | 194 | $5.63K | 0.00% | 00.0% | Unchanged |
| DV Trading LLC | 188 | $5.45K | 0.00% | +188 | New |
| Cromwell Holdings LLC | 184 | $5.34K | 0.00% | 00.0% | Unchanged |
| Medallion Wealth Advisors, LLC | 180 | $5.22K | 0.00% | 00.0% | Unchanged |
| Mitsubishi UFJ Kokusai Asset Management Co., Ltd. | 170 | $5.18K | 0.00% | 00.0% | Unchanged |
| Elevated Capital Advisors, LLC | 177 | $5.13K | 0.00% | +177 | New |
| Harbor Capital Advisors, Inc. | 169 | $5.00K | 0.00% | −1−0.6% | Reduced |
| Versant Capital Management, Inc | 171 | $4.96K | 0.00% | −171−50.0% | Reduced |
| Geneos Wealth Management Inc. | 170 | $4.93K | 0.00% | 00.0% | Unchanged |
| True Wealth Design, LLC | 169 | $4.90K | 0.00% | +103+156.1% | Added |
| Atlantic Edge Private Wealth Management, LLC | 164 | $4.76K | 0.00% | 00.0% | Unchanged |
| Golden State Wealth Management, LLC | 161 | $4.67K | 0.00% | −111−40.8% | Reduced |
| TD Private Client Wealth LLC | 144 | $4.18K | 0.00% | −1−0.7% | Reduced |
| Assetmark, Inc | 142 | $4.12K | 0.00% | +26+22.4% | Added |
| McIlrath & Eck, LLC | 136 | $3.94K | 0.00% | 00.0% | Unchanged |
| Farmers & Merchants Investments Inc | 135 | $3.92K | 0.00% | −41−23.3% | Reduced |
| ORG Partners LLC | 130 | $3.77K | 0.00% | 00.0% | Unchanged |
| Huntington National Bank | 125 | $3.63K | 0.00% | −72−36.5% | Reduced |
| Roxbury Financial LLC | 118 | $3.42K | 0.00% | 00.0% | Unchanged |
| Walleye Capital LLC | 111 | $3.22K | 0.00% | −89−44.5% | Reduced |
| BankPlus Trust Department | 110 | $3.19K | 0.00% | −334−75.2% | Reduced |
| Grove Bank & Trust | 108 | $3.13K | 0.00% | 00.0% | Unchanged |
| Garton & Associates Financial Advisors LLC | 107 | $3.10K | 0.00% | +107 | New |
| Ramirez Asset Management, Inc. | 106 | $3.07K | 0.00% | −36−25.4% | Reduced |
| Godsey & Gibb Associates | 106 | $3.07K | 0.00% | 00.0% | Unchanged |
| Harbor Investment Advisory, LLC | 106 | $3.07K | 0.00% | 00.0% | Unchanged |
| Private Wealth Management Group, LLC | 100 | $2.90K | 0.00% | −6−5.7% | Reduced |