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NYSE · Specialty Business Services · USD

Amentum Holdings, Inc. (AMTM) Stock Analysis

Amentum Holdings, Inc. (AMTM) is a Specialty Business Services stock listed on NYSE and quoted in US Dollar.

Last Updated: October 21, 2026

AMTM

$20.15

+$0.28 (+1.41%)

Oct 21, 2026 · Market close

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Price History

Hover for the daily close. The dotted line marks the period open.

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AMTM Key Statistics

As of Oct 21, 2026
Trading
Open
$19.97
Previous Close
$19.87
Day's Range
19.82–20.38
52-Week Range
17.72–38.11
Volume
1.63M
BetaHow much the share price moves relative to the wider market. 1.0 moves in line with it; above 1.0 swings more, below 1.0 less.
0.31
Valuation
Market Cap
$4.93B
P/E Ratio
24.28
Forward P/EShare price divided by forecast earnings for the year ahead, rather than the year just past.
7.63
P/S ratioMarket value divided by annual revenue. Useful for companies that are not yet profitable, where a P/E cannot be calculated.
0.35
EPS (ttm)Profit attributable to each share over the last twelve months.
0.83
Financials (FY)
Revenue (FY)
$14.39B+71.59%
Net Income (FY)
$66.00M
Profit marginThe share of revenue left as profit after all costs and taxes.
1.44%
Shares OutstandingThe total number of shares held by all investors. Market value is this figure multiplied by the share price.
244.51M
1-Year Return
−11.82%
Dividend and dates
Avg Volume
2.01M

Only metrics the company reports are shown. Data provided by Yahoo Finance via yfinance. Updated daily.

Key facts

As of October 21, 2026, AMTM closed at $20.15, −11.82% over 1 year.

Amentum Holdings, Inc. (AMTM) has a market capitalization of $4.93B.

In fiscal 2025, AMTM reported revenue of $14.39B.

AMTM Stock Return by Calendar Year

Amentum Holdings, Inc. (AMTM) return since Sep 2024: what $10,000 became

1 year
$10,000 $8,818
−11.82%
Since Sep 2024
$10,000 $6,828
−31.72%

If you had invested $10,000 in Amentum Holdings, Inc. (AMTM) at the close on September 24, 2024, the earliest close on record here, it would have been worth $6,828 at the close on October 21, 2026: −31.72% in total, −16.81% a year, over a partial period shorter than 10 years. A historical calculation from closing prices adjusted for splits and dividends, before fees and taxes.

Calendar-year returns computed from daily closing prices. Partial years are shown muted and marked with an asterisk.

YearReturn
2026 (partial year)−30.52%
2025+37.90%
2024 (partial year)−28.74%

As of October 21, 2026.

AMTM Revenue and Earnings by Fiscal Year

FY ends September
Fiscal yearRevenueNet incomeNet margin
2025$14.39B$66.00M0.5%
2024$8.39B−$82.00M−1.0%
2023$7.87B−$314.00M−4.0%
2022$7.68B−$84.00M−1.1%
Fiscal yearRevenueGross profitOperating incomeNet incomeNet margin
2025$14.39B$1.51B$418.00M$66.00M0.5%
2024$8.39B$798.00M$217.00M−$82.00M−1.0%
2023$7.87B$782.00M$187.00M−$314.00M−4.0%
2022$7.68B$771.00M$191.00M−$84.00M−1.1%

Annual figures as reported, in the company's reporting currency. As of September 30, 2025.

AMTM Valuation vs Specialty Business Services Median

Median of 50 stocks
MetricAMTMSpecialty Business Services medianvs median
P/E24.2825.294% below
P/S ratio0.351.090.3x the median
Profit margin1.44%1.93%0.5 pts below

Medians across 50 Specialty Business Services stocks that report the metric. Medians, not averages, so one outlier cannot move them. As of October 21, 2026.

Recent News

All 20 articles ↓

News provided by third-party sources. Not financial advice.

Analysis

Data-derived

Company Overview

Amentum Holdings, Inc. (AMTM) is capitalised at $4.93B on the latest close. The company sits in the Industrials sector, in the Specialty Business Services industry. Headcount on file is 50,000.

Over the past 52 weeks the price has ranged from $17.72 to $38.11. AMTM last closed at $20.15 on October 21, 2026. That is +$0.28 (+1.41%) against the previous close. The latest close sits 13.71% above that 52-week low.

Financial Health

The most recent full year on file, fiscal 2025, shows revenue of $14.39B. That is +71.59% against the prior fiscal year, when revenue was $8.39B. The same year closed with net income of $66.00M. The reported profit margin is 1.44%. That is 0.5 percentage points below the Specialty Business Services median of 1.93%. Earnings per share on a trailing basis come to 0.83.

Across the 4 fiscal years on file, revenue moves from $7.68B in 2022 to $14.39B in 2025. Of those 4 years, 1 report positive net income.

Valuation Assessment

The trailing P/E ratio stands at 24.28. That is 3.99% below the Specialty Business Services median of 25.29. On forward earnings the ratio is 7.63. Measured against sales, the shares trade at 0.35 times revenue. On price-to-sales that is 0.3 times the Specialty Business Services median of 1.09. 50 Specialty Business Services companies report these metrics, and the medians quoted come from that group.

The trailing one-year total return is −11.82%. The stored price history starts on September 24, 2024, and the total return since then is −31.72%. Beta against the wider market is reported at 0.31. Daily returns over the trailing 2 years annualize to a volatility of 50.92%.

Growth & Income

No dividend is on file for AMTM.

The record holds one complete calendar year, 2025, which returned +37.90%. 2026 is still running; the total return is −30.52% year to date.

Peer Comparison

Amentum Holdings, Inc. (AMTM) operates in the Specialty Business Services industry. Here is how it compares to its closest peers by market capitalization:

Company Ticker Market Cap P/E Ratio
Amentum Holdings, Inc. AMTM $4.93B 24.3
Cintas Corporation CTAS $87.42B 43.4
RELX PLC RELX $67.97B 23.4
Thomson Reuters Corporation TRI $49.94B 30.3

The Specialty Business Services industry average P/E ratio is 25.3x. Amentum Holdings, Inc. trades at a P/E of 24.3.

Every figure above is read from this page's own data on each daily rebuild. Informational only, not financial advice. As of October 21, 2026.

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About Amentum Holdings, Inc.

Amentum Holdings, Inc. engages in the provision of engineering and technology solutions in the United States and internationally. It operates through two segments, Digital Solutions and Global Engineering Solutions. The company offers digital and data-driven solutions, including intelligence analytics, space system development, cybersecurity, and IT to the federal government and commercial clients. It also provides large-scale environmental remediation, nuclear power solutions, platform engineering, sustainment, and supply chain management for the U.S. government and allied nations. The company was incorporated in 2023 and is headquartered in Chantilly, Virginia.

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