Amentum Holdings, Inc. (AMTM) Stock

About Amentum Holdings, Inc.

Amentum Holdings, Inc. (AMTM) stock trades at $21.76 with a market capitalization of $5.32B. The stock is valued at a price-to-earnings (P/E) ratio of 23.12, price-to-book of 1.00, price-to-sales of 0.33. Over the past 52 weeks the stock has ranged between $17.93 and $38.11, and currently trades 42.9% below its 52-week high.

On profitability, Amentum Holdings, Inc. generates a return on equity (ROE) of 4.44%, return on capital employed of 6.37%, an operating margin of 3.33%, a net profit margin of 1.44%.

Amentum Holdings, Inc. by the numbers, 2021–2025

Between 2021 and 2025 Amentum Holdings, Inc. reported revenue of $5.1B rising to $14.4B, a change of +182.7% across 5 years. Compounded, revenue has grown —% a year over five years, 23.3% over three, 71.6% over the last twelve months. Net profit fell to $66.0M.

Operating margin went from 6.6% in 2021 to 3.5% in 2025, a fall of 3.1 percentage points. The most recent net margin is 1.44%. On a trailing twelve-month basis to Jun '26, revenue is $14.1B and net profit $204.0M.

Borrowings stand at $4.2B, cash from operations was $543.0M in the latest year, positive in 5 of the last 5.

Return on equity has averaged -21.7% over five years, and was 1.5% in the most recent year.

The share price itself has compounded at —% a year over five years, —% over three, —% over the last year. Past price movement is history, not a forecast.

Figures are as reported and in the company's own reporting currency. They describe what has already happened and carry no implication about what follows.

Amentum Holdings, Inc. (AMTM) — frequently asked questions