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NYSE · AMTMIndustrialsBusiness Services

Amentum Holdings, Inc. (AMTM)

$21.37−3.87%
Close Nov 5, 2026 · split-adjusted
Nov 4, 2026$22.23▲ 1.28% in range
Nov 4, 2025Low $18.12 · High $37.53Nov 4, 2026
What changed · written from our data
As of Nov 5, 2026

Amentum Holdings closed at $21.37 on Nov 5, down 3.87%, 43.1% below its 52-week closing high. Volume of 2.0M shares was 1.02× its 20-day average (close to normal).

Split-adjusted performance: +15.5% over one month, -13.0% over six months, -2.6% over one year.

In the quarter ended Jul 3, 2026, revenue was $3.49B, down 2.0% from a year earlier, with a net margin of 1.9%.

Short interest was 12.7M shares at the Oct 15 settlement, up 2.7% from the prior report (6.4% of float, 7.0 days to cover).

Market cap$5.23B244.5M shares
Revenue · quarter$3.49B−2.0% YoY
Diluted EPS$0.27+575.0% YoY
P/E · TTM25.6×P/S 0.4×
Net margin1.9%Gross 10.3%
Dividend yieldNone
52-week range18.12 – 37.53−43.1% from high
Volume2.0M1.02× 20-day avg
Volatility · 60d37.3%Annualised
Short % of float6.4%7.0 days to cover
Net cash-$3.37BCash $459.0M
Next earnings—Not scheduled
Split-adjusted performance
1W −3.2%1M +15.5%3M −13.7%6M −13.0%YTD −26.3%1Y −2.6%3Y —5Y —

Earnings reactions

History →

No reported quarters with price history yet.

Rank within Business Services

Percentile among 75 companies (100 = best)

6-month momentum32
Revenue growth27
Net margin39
Value (low P/E)52
Size61

Industry medians: 6-month return +11.5%, revenue growth +9.4%, net margin 5.6%, P/E 25.8×.

Short interest

Details →
Shares short12.7M+2.7% vs prior
Days to cover7.0Settled Oct 15
% of float6.4%
Short vol. 10d36.7%of daily volume

Closest peers by size in Business Services

CompanyPriceToday6MRev. growthNet marginP/EMkt cap
AMTMAmentum Holdings$21.37−3.87%−13.0%−2.0%1.9%25.6$5.23B
SEZLSezzle$155.00+13.40%+55.3%+51.7%27.2%32.4$5.24BCompare
WEXWEX$179.78−0.18%+24.6%+12.8%17.2%14.6$5.91BCompare
RELYRemitly Global$21.55−20.44%−5.5%+21.5%13.2%12.5$4.56BCompare
XMTRXometry$109.01−3.97%+38.9%+39.7%0.8%—$6.28BCompare
MBGLMobility Global$19.86+0.35%————$6.36BCompare
PAYPaymentus Holdings$33.38−0.33%+19.9%+19.8%7.4%44.5$4.21BCompare
EXLSExlService Holdings$43.61+1.14%+39.2%+19.7%10.8%25.2$6.58BCompare
LYFTLyft$17.84−4.80%+26.0%+16.1%2.7%2.4$6.75BCompare

News about Amentum Holdings

All news →
Amentum, GXO, Accenture and Maersk enter alliance to support the next generation of supply chain solutions to the UK Defence SectorGlobeNewswire Inc. · Mar 12, 2026▲ PositiveAmentum Wins $112 Million EU Deal To Clean Up Europe's Oldest Nuclear Research SitesBenzinga · Mar 10, 2026▲ Positive

Quick answers

What does Amentum Holdings do?
Amentum Holdings Inc is an engineering and technology solutions provider serving U.S. and allied government agencies, as well as international and commercial customers across energy and environmental, intelligence, space, defense, civilian and commercial markets.
What is AMTM's market cap?
$5.23B, based on the Nov 5 close of $21.37.
What is AMTM's P/E ratio?
25.6× trailing-twelve-month earnings of $204M.
Does Amentum Holdings pay a dividend?
No regular cash dividend has been paid in the last year.
How much of AMTM is sold short?
12.7M shares, 6.4% of float, as of Oct 15, 2026.
What sector is AMTM in?
Industrials, in the Business Services industry.

About Amentum Holdings

Amentum Holdings Inc is an engineering and technology solutions provider serving U.S. and allied government agencies, as well as international and commercial customers across energy and environmental, intelligence, space, defense, civilian and commercial markets. It provides environmental remediation, intelligence and counter-threat solutions, data analytics, engineering and integration, testing, training and citizen services. The company operates through two segments: Digital Solutions, offering digital and data-driven services, and Global Engineering Solutions, providing environmental remediation, nuclear power solutions, platform engineering, sustainment, and supply chain management. majority of its revenue comes from the Global Engineering Solutions segment and from the United States.

HQ: Chantilly, VA50,000 employeesListed Sep 24, 2024amentum.com

Sources: Massive / Polygon daily aggregates (split-adjusted) · SEC filings via Massive · FINRA settlements via Massive · Financial Modeling Prep. Figures are dated where shown; research is informational, not investment advice. Methodology