Business overview
Amentum Holdings is a global provider of technical and engineering services operating in the specialized professional services sector. The company supports complex programs for government agencies and industrial clients, particularly in advanced logistics, operational maintenance, and systems integration.
Watch: Activity is highly correlated to public operational and maintenance budgets, making the company dependent on political decisions regarding defense and security fund allocations. Margins may come under pressure due to the highly competitive and frequently fixed-price nature of government service contracts.
Valuation
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Update log
| Date | News | Impact |
|---|---|---|
| 9/5/2026 | Timing score declines following negative analyst revisions AI review | The timing score deterioration is driven by a significant drop in the analyst revisions pillar, reflecting recent downward sentiment and negative outlooks from third-party commentary. While the company secured a new contract for UK energy grid upgrades, this was insufficient to offset the negative impact of recent quarterly underperformance and subsequent market skepticism regarding AMTM's growth trajectory. |
| 9/4/2026 | 3 Reasons to Sell AMTM and 1 Stock to Buy Instead Yahoo Finance | Yahoo Finance |
| 9/1/2026 | Yahoo Finance | |
| 8/20/2026 | Yahoo Finance | |
| 8/20/2026 | Yahoo Finance | |
| 8/19/2026 | Yahoo Finance | |
| 8/19/2026 | Amentum (AMTM) Q3 2026 Earnings Call Transcript Yahoo Finance | Yahoo Finance |
| 8/18/2026 | Yahoo Finance | |
| 8/17/2026 | Yahoo Finance | |
| 8/14/2026 | Yahoo Finance | |
| 8/13/2026 | Why Amentum (AMTM) Shares Are Trading Lower Today Yahoo Finance | Amentum Holdings reported third-quarter financial results that fell short of expectations, with revenue of $3.49 billion and earnings per share of $0.27. |
| 8/12/2026 | Yahoo Finance | |
| 8/12/2026 | Event outcome: Confirmed event_outcome | Amentum Holdings, Inc. — quarterly earnings release — Amentum Holdings, Inc. released its financial results for the third quarter ended July 3, 2026, on August 10, 2026. The company reported quarterly revenue of $3.49 billion and diluted earnings per share of $0.27, while also updating its fiscal 2026 guidance. |
| 8/11/2026 | EX-31.2 — Period: 2026-07-03 | |
| 8/11/2026 | EX-31.1 — Period: 2026-07-03 | |
| 8/11/2026 | Amentum Holdings has partnered with Westinghouse Electric Company to accelerate the deployment and regulatory approval of next-generation nuclear reactor platforms. | |
| 8/11/2026 | Amentum Holdings, Inc. Q3 2026 Earnings Call Summary Yahoo Finance | Summary of Amentum Holdings, Inc.'s Q3 2026 earnings call. |
| 8/11/2026 | EX-32.1 — Period: 2026-07-03 | |
| 8/11/2026 | Yahoo Finance | |
| 8/11/2026 | Yahoo Finance | |
| 8/11/2026 | Amentum Q3 Earnings Call Highlights Yahoo Finance | Yahoo Finance |
| 8/11/2026 | Yahoo Finance | |
| 8/11/2026 | EX-32.2 — Period: 2026-07-03 | |
| 8/11/2026 | FORM 10-Q — Period: 2026-07-03 | |
| 8/11/2026 | Rating revision: Rating 1 → Rating 2 AI review | While Amentum continues to demonstrate core operational capabilities, the recent miss on revenue estimates and the subsequent double-digit decline in share price introduce volatility that warrants a more cautious stance. The contrast between earnings per share performance and top-line revenue challenges suggests structural headwinds that justify lowering the rating from 1 to 2. A more conservative rating reflects these mixed financial signals and the inherent risks of fixed-price government contracting. |
| 8/10/2026 | Amentum announced financial results for the third quarter ended July 3, 2026. | |
| 8/10/2026 | Amentum Holdings (AMTM) Beats Q3 Earnings Estimates Yahoo Finance | Yahoo Finance |
| 8/10/2026 | Yahoo Finance | |
| 8/10/2026 | EX-99.1 — Results of operations released · Financial statements and exhibits | |
| 8/10/2026 | FORM 8-K — Results of operations released · Financial statements and exhibits | |
| 8/10/2026 | Amentum Holdings reported Q2 2026 revenue of $3.49 billion, missing expectations and leading to a stock price decline. | |
| 8/4/2026 | Yahoo Finance | |
| 8/4/2026 | Yahoo Finance | |
| 7/29/2026 | Yahoo Finance | |
| 7/29/2026 | Yahoo Finance | |
| 7/27/2026 | Rating revision: Rating 2 → Rating 1 AI review | The significant insider purchases by the Executive Chair and a Director demonstrate strong confidence in Amentum's long-term operational performance and valuation. These substantial, non-discretionary buys suggest leadership anticipates a positive trajectory for the firm's strategic initiatives and contract wins. Consequently, upgrading the tier reflects the increased conviction signaled by company insiders. |
| 7/23/2026 | Rating revision: Rating 3 → Rating 2 AI review | Amentum demonstrates marked resilience and an ability to secure strategic contracts in high value-added sectors such as nuclear energy, hypersonic capabilities, and AI. Although the share price is under short-term pressure, the robustness of its order book and its technological diversification justify an upgrade in tier, shifting from a speculative status to a solid potential profile. |
| 7/22/2026 | Amentum (AMTM): Buy, Sell, or Hold Post Q1 Earnings? Yahoo Finance | Yahoo Finance |
| 7/21/2026 | Yahoo Finance | |
| 7/20/2026 | Yahoo Finance | |
| 7/20/2026 | Yahoo Finance | |
| 7/20/2026 | Amentum has been chosen by the U.S. Department of Energy to begin negotiations regarding the lease of a new AI data center. | |
| 7/20/2026 | Amentum shares recorded a gain following the company's selection for a data center project dedicated to artificial intelligence. | |
| 7/14/2026 | Yahoo Finance | |
| 7/14/2026 | Yahoo Finance | |
| 7/14/2026 | Although Amentum has won new government contracts, the stock is down 33% this year, with some analysts considering the share to be fully priced. | |
| 4/16/2026 | Amentum is renewing its collaboration with the agency Cal Fire to support firefighting operations in California. | |
| 2/18/2026 | Amentum has been selected to participate in the development of the UK's hypersonic strike capabilities. | |
| 11/25/2025 | EX-23.1 — Period: 2025-10-03 | |
| 11/3/2025 | Amentum has secured major contracts worth £1.4 billion for the Sellafield nuclear program. | |
| 10/29/2025 | Philippe Wolf, CEO of Amentum France, appeared on BFM Business. | |
| 7/21/2025 | Philippe Wolf, representing Amentum Clean Energy France, discussed the company's expertise in the nuclear engineering field on BFM. | |
| 3/7/2025 | EX-23.1 — Other material events · Financial statements and exhibits | |
| 2/18/2025 | Loughran Barbara (Dir) — Buy +$97,635 Insider Form 4 | P - Purchase transaction of +4,600 shares at $21.23 |
| 2/12/2025 | Demetriou Steven J. (Exec Chair) — Buy +$2,080,700 Insider Form 4 | P - Purchase transaction of +100,000 shares at $20.81 |
| 1/2/2025 | Amentum has been selected to conduct an assessment regarding a potential nuclear expansion in the Netherlands. | |
| 12/17/2024 | EX-23.1 — Period: 2024-09-27 | |
| 11/13/2024 | FORM 8-K — Officer / director departure or appointment · Financial statements and exhibits | |
| 10/3/2024 | Entry into a material agreement · Completed acquisition or disposition · Change of control · Officer / director departure or appointment · Amendments to bylaws · Regulation FD disclosure · Financial statements and exhibits | |
| 12/1/2017 | ENGINEERING SERVICES AND SCIENCE CAPABILITY AUGMENTATION (ESSCA) | |
| 9/27/2016 | IGF::OT::IGF ENHANCED ARMY GLOBAL LOGISTICS ENTERPRISE (EAGLE) - ARMY PREPOSITIONED STOCK (APS)-5 KUWAIT/QATAR, LOGISTICS SUPPORT SERVICES, INCLUDING MAINTENANCE, SUPPLY, AND TRANSPORTATION. | |
| 6/23/2016 | IGF::OT::IGF | |
| 3/1/2013 | IGF::OT::IGF THE TEST AND OPERATIONS SUPPORT CONTRACT (TOSC) IS A COST-PLUS-AWARD-FEE CONTRACT WITH AN INDEFINITE DELIVERY INDEFINITE QUANTITY TASK ORDERING PROVISION. TOSC PROVIDES A PROCESSING CONTRACT FOR THE KENNEDY SPACE CENTER (KSC) SUPPORTING MULTIPLE CUSTOMERS. THE SCOPE OF THIS CONTRACT INCLUDES PROGRAM MANAGEMENT AND CONTROL; SAFETY AND MISSION ASSURANCE; INFORMATION MANAGEMENT; PROCESSING SUPPORT SYSTEMS AND INTEGRATION; FLIGHT HARDWARE PROCESSING; GROUND SYSTEMS OPERATIONS, MAINTENANCE AND SUSTAINING ENGINEERING; LOGISTICS AND SPACEPORT SERVICES. TOSC PROVIDES OVERALL MANAGEMENT AND IMPLEMENTATION OF GROUND SYSTEMS CAPABILITIES, FLIGHT HARDWARE PROCESSING AND LAUNCH OPERATIONS AT KSC IN FLORIDA. THESE TASKS WILL SUPPORT THE INTERNATIONAL SPACE STATION, GROUND SYSTEMS DEVELOPMENT AND OPERATIONS, AND THE SPACE LAUNCH SYSTEM, ORION MULTI-PURPOSE CREW VEHICLE AND LAUNCH SERVICES PROGRAMS. TOSC ALSO PROVIDES GROUND PROCESSING FOR LAUNCH VEHICLES, SPACECRAFT AND PAYLOADS IN SUPPORT OF EMERGING PROGRAMS, COMMERCIAL ENTITIES AND OTHER GOVERNMENT AGENCIES AS DESIGNATED BY THE GOVERNMENT. SERVICES INCLUDE ADVANCED PLANNING AND SPECIAL STUDIES; DEVELOPMENT OF DESIGNATED GROUND SYSTEMS; OPERATIONAL SUPPORT FOR DESIGN AND DEVELOPMENT OF FLIGHT HARDWARE AND GROUND SYSTEMS; SPACECRAFT, PAYLOAD, AND LAUNCH VEHICLE SERVICING AND PROCESSING; GROUND SYSTEMS SERVICES; AND LOGISTICS AND OTHER PROCESSING SUPPORT SERVICES. FLIGHT HARDWARE PROCESSING AND SERVICING ACTIVITIES INCLUDE ASSEMBLY, INTEGRATION, CHECKOUT, AND DEPOT-LEVEL MAINTENANCE AND REPAIR. LAUNCH VEHICLE AND SPACECRAFT OPERATIONS INCLUDE ADVANCED PLANNING, ELEMENT PROCESSING, INTEGRATION, TEST, LAUNCH AND RECOVERY SERVICES. GROUND SYSTEMS SERVICES INCLUDE OPERATIONS, MAINTENANCE AND VALIDATION OF ASSOCIATED GROUND SYSTEMS AND SUPPORT EQUIPMENT NECESSARY FOR HUMAN SPACE FLIGHT AND EXPLORATION. CONTRACT ACTIVITIES WILL BE PERFORMED IN THE MOST COST-EFFECTIVE AND EFFICIENT MANNER SUPPORTING THE GOVERNMENT S PRIORITIES FOR SAFETY, MISSION SUCCESS, CUSTOMER SATISFACTION AND INNOVATION WHILE MAINTAINING FLEXIBILITY AND RESPONSIVENESS TO CHANGING REQUIREMENTS. WITH THE AWARD OF THIS CONTRACT, KSC IS POSITIONING ITSELF FOR THE NEXT ERA OF SPACE EXPLORATION. KSC IS TRANSITIONING TO A 21ST-CENTURY LAUNCH FACILITY WITH MULTIPLE USERS, BOTH PRIVATE AND GOVERNMENT. A DYNAMIC INFRASTRUCTURE IS TAKING SHAPE, DESIGNED TO HOST MANY KINDS OF SPACECRAFT AND ROCKETS SENDING PEOPLE ON AMERICA'S NEXT VOYAGES IN SPACE. | |
| 7/7/2009 | LOGCAP IV SERVICES IN AFGHANISTAN |