Amentum Holdings, Inc.
Amentum Holdings, Inc. (NYSE: AMTM) provides advanced engineering and technology solutions to U.S. and allied government agencies and international and commercial customers. Its services span the lifecycle of customer missions, including environmental remediation, nuclear energy, space operations, intelligence… From the company’s description.
In fiscal 2025, Amentum Holdings, Inc. reported revenue of $14.39B, up 71.6% from fiscal 2024, and net income of $59.00M. Its operating margin was 3.3%, and operations generated $543.00M in cash. Over the twelve months to Jul 3, 2026, revenue was $14.13B.
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) provides advanced engineering and technology solutions to U.S. and allied government agencies and international and commercial customers. Its services span the lifecycle of customer missions, including environmental remediation, nuclear energy, space operations, intelligence analytics, cybersecurity, digital modernization, research and development, testing, platform engineering, sustainment and supply chain management. Customers include U.S. federal agencies such as the Departments of Energy and War, NASA and the Intelligence Community, as well as the U.K. Ministry of Defence, the U.K. Nuclear Decommissioning Authority and Australia’s Department of Defence. Amentum reports two segments: Digital Solutions, which delivers data-driven services, intelligence analytics, space systems, cybersecurity and IT; and Global Engineering Solutions, which provides environmental remediation, nuclear power solutions and engineering and sustainment services. Approximately 81% of fiscal 2025 revenue comes from direct U.S. government contracts. The company employs approximately 50,000 people across more than 70 countries. Amentum became public in 2024 through the merger of its legacy business with spun-off businesses from Jacobs Solutions. Its website is www.amentum.com.
Company details
- Sector
- Industrials
- Industry (SIC)
- 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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