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What smart money is saying about Amentum HoldingsUnited States flag

AMTM · Industrials · Aerospace & Defense · Market cap $7.71B

2 funds in our archive have pitched Amentum Holdings — most recently Royce Invest in September 2025.

Company profile

Amentum Holdings, Inc. provides mission-critical, technology-driven services in government and commercial markets. It operates through two operating segments: Critical Mission Solutions and Cyber & Intelligence. The Critical Mission Solutions segment provides test, training, and operations services for missile defense systems, IT and engineering services to defense clients and the space sector, technological solutions, including installations, decommissioning, and environmental remediation to energy clients, and other highly technical consulting solutions. The Cyber & Intelligence segment provides advanced cyber training and data analytics for government professionals, advanced communication systems and aerial mapping technologies to national security clients, and other technical services for United States defense and intelligence clients. The company was founded on November 26, 2019 and is headquartered in Chantilly, VA.

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2
Reported positions
0
Bought
1
Sold
4
Letters

Position history

Between Q4 2024 and Q2 2026, 2 fund letters reported a position in Amentum Holdings1 trimmed or exited.

Fund letters reporting a position in Amentum Holdings, by quarter
QuarterLettersBoughtSoldTheses
Q2 20262010
Q3 20250001
Q4 20240001

Fund activity · 2 positions · 1 move

  • ExitedSequoia Fund (Ruane Cunniff LP)
    June 2026
    We funded these purchases by trimming our investments in Sunbelt Rentals and Elevance Health and exiting the last of our holdings in Amentum Holdings, Liberty Broadband, and Credit Acceptance Corp.
    Read the letterAmentum Holdings
  • HoldsHotchkis & Wiley Small Cap Diversified Value Representative Portfolio
    June 2026

    Listed in Hotchkis & Wiley Small Cap Diversified Value Representative Portfolio’s reported holdings.

    Read the letterAmentum Holdings

Fund coverage · 2 theses

  • Royce Invest
    September 2025

    Amentum Holdings is a newly formed public company with strong growth potential, driven by a merger, improving order win rates, and expected margin expansion, trading at an attractive valuation relative to peers.

    Read the full thesis
  • Aristotle Small Cap Equity
    December 2024

    Amentum Holdings (AMTM) is a well-positioned global engineering and technology solutions provider poised to benefit from increased government spending on digital modernization, cybersecurity, and next-generation technologies.

    Read the full thesis

Read every full thesis on Amentum Holdings

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