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AMTMAmentum Holdings, Inc.

The market capitalization for Amentum Holdings, Inc. (AMTM) is $4.97 Billion, making it a Mid Cap company. Market cap is calculated by multiplying the current stock price by the total number of shares outstanding.

Market Capitalization

$4.97B

$4.97 Billion

Calculation

Stock Price
$20.38
Shares Outstanding
244.09M
Market Cap
$4.97B

Market Cap = Price × Shares Outstanding

Size Classification

Mid Cap

$2B - $10B

Companies with market capitalization between $2 billion and $10 billion.

Market Cap Size Scale

Micro Cap

<$250M

Small Cap

$250M-$2B

Mid Cap

$2B-$10B

Large Cap

$10B-$1T

Mega Cap

>$1T

AMTM Market Cap: $4.97 Billion

Related Valuation Metrics

Key Statistics

Market Cap$4.97 Billion
Stock Price$20.38
Shares Outstanding244.09M
Size CategoryMid Cap
P/E Ratio33.97
P/B Ratio1.08
Data as of Thursday, June 25, 2026

About Amentum Holdings, Inc.

Amentum Holdings, Inc. is a provider of critical, technology-driven services, serving both governmental and commercial sectors. Its operations are structured around two distinct segments: Critical Mission Solutions and Cyber & Intelligence. The Critical Mission Solutions (CMS) segment delivers comprehensive support across various domains. This includes testing, training, and operational oversight for advanced missile defense systems. It also furnishes IT and engineering expertise to both defense organizations and the burgeoning space sector. Moreover, CMS offers technological solutions to energy clients, encompassing installation, decommissioning, and vital environmental remediation efforts, in addition to specialized technical consulting services. Meanwhile, the Cyber & Intelligence (C&I) segment focuses on advanced cyber training and sophisticated data analytics for government professionals. It also deploys cutting-edge communication systems and aerial mapping technologies for national security applications, alongside other specialized technical support for U.S. defense and intelligence agencies. Established on November 26, 2019, the company maintains its corporate headquarters in Chantilly, VA.

Chantilly, DE
53,000 employees
Industrials / Aerospace & Defense
Sector
Industrials
Industry
Aerospace & Defense
CEO
John E. Heller