Amentum Holdings, Inc.
Amentum Holdings, Inc. (NYSE: AMTM) is a global advanced engineering and technology solutions provider serving U.S. and allied government agencies alongside international and commercial customers. The company operates through two reportable segments: Digital Solutions, which provides advanced digital and data-driven… From the company’s description.
Margins and return on equity change in ; everything else in percent. Fewer shares and less debt are shown plainly, not as bad news — it depends what you make of buybacks. Dotted labels explain each measure. is shown separately from the annual figures.
What Amentum Holdings, Inc. does
In the company’s own words
Amentum Holdings, Inc. (NYSE: AMTM) is a global advanced engineering and technology solutions provider serving U.S. and allied government agencies alongside international and commercial customers. The company operates through two reportable segments: Digital Solutions, which provides advanced digital and data-driven solutions including intelligence analytics, space system development, cybersecurity, and next-generation IT services; and Global Engineering Solutions, which delivers large-scale environmental remediation, nuclear power solutions, platform engineering, sustainment, and supply chain management across all seven continents. The company website is www.amentum.com.
Amentum was formed on September 27, 2024, through a merger between legacy Amentum and a spin-off of Jacobs Solutions Inc.'s Critical Mission Solutions business and portions of its Divergent Solutions business, bringing together two premier government services companies with complementary capabilities developed over more than 100 years. The company's heritage traces back to foundational organizations including EG&G, Morrison-Knudsen, Westinghouse Government Services, URS, DynCorp International, and Pacific Architects and Engineers, with notable historical achievements including design of the Hoover Dam and support for the Apollo Program and Space Shuttle.
The company employs approximately 50,000 people across over 70 countries, with 25 percent of employees positioned internationally. Amentum maintains a substantial backlog of $47.1 billion as of October 3, 2025, providing revenue visibility and stability. The U.S. federal government represents approximately 81 percent of revenues, with key customers including the Department of Energy, Intelligence Community, Department of War, NASA, and Department of Homeland Security. International customers include the U.K. Ministry of Defence, U.K. Nuclear Decommissioning Authority, and Australian Department of Defence.
The company's competitive advantages stem from its scale, diverse contract portfolio across multiple government agencies and missions, global reach with extensive technical capabilities, and proven expertise in high-priority government areas including command and control systems, research and development, energy, space, and digital modernization. Amentum operates as a prime contractor across diverse capabilities and missions, positioning itself as a comprehensive solutions provider for customers' largest and most complex programs.
Company details
- Sector
- Industrials
- Industry
- Business Services
- Headquarters
- CHANTILLY, VA
- Fiscal year end
- October
- CIK
- 2011286
- SIC
- 7389
Financial performance, year by year
Fiscal 2024–2025 · USDThe full income statement, balance sheet and cash flow for each of these years — every figure traceable to its filing — is on the Financials tab with a free account.
Who owns Amentum Holdings, Inc. — and what changed
Funds as of 2026Q2 · superinvestors as of 2026-06-30
Superinvestors in Amentum Holdings, Inc. · what they did last quarter
Share of each manager’s reported 13F portfolio. Change is in shares held, since the previous quarter.
Largest fund holders · Amentum Holdings, Inc.’s weight in each
Fund ownership is a floor, not a census — pensions, insurers and people holding shares directly are not visible here.
Amentum Holdings, Inc.’s bonds, as funds hold them
Funds report holding 1 issues of Amentum Holdings, Inc.’s debt, $384.63M at market value — what funds hold, not the company’s total debt. Weighted-average coupon 7.25%, maturing 2032 to 2032.
Fund ownership counts N-PORT filers only, so it is a floor rather than a census — pensions, insurers and direct holders are not visible here, and the remainder is not “held by individuals”.
Fund ownership is a subset of institutional 13F ownership — the two describe overlapping populations and must not be added together.
Every fund and institutional holder, quarter by quarter, is on the Ownership tab with a free account.
Recent filings
All filings →Each filing opens into its own statements and disclosures here.
Put this business in context.
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