Why did Amentum (AMTM) stock move recently?

On 8/4/2026, Amentum moved +4.1% — No clear company-specific catalyst identified; the stock moved with the broader market or sector ahead of its upcoming Q3 earnings call. This is MarketChacha's decoded reason from filings and credible news; it is education, not buy/sell advice.

Is Amentum (AMTM) overvalued or fairly valued?

MarketChacha shows Amentum's valuation in context — a trailing P/E of about 43.6, a forward P/E of about 7.6, a price-to-book of about 1.0 — alongside its revenue and profit growth and whether reported profit converts into operating cash, so you can judge value for yourself. MarketChacha does not issue ratings, price targets, or buy/sell advice.

What is Amentum's revenue?

Amentum reported revenue of $14.4B for FY2025, with net profit of $66.0M, per official filings.

What is the share price of Amentum (AMTM)?

Amentum last traded at $20.06 (-0.2% on the day), as of 9/4/2026 — a delayed quote shown for education, not investment advice.

Amentum

AMTM · NYSE · Industrials · United States

Snapshot

TickerAMTM

ExchangeNYSE

SectorIndustrials

IndustrySpecialty Business Services

CountryUnited States

Employees50,000

HeadquartersChantilly, United States

Websitewww.amentum.com

Filings tracked11

About Amentum

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.

Who owns it

Insiders1.2%
Institutions98.8%
Public & other0.0%

616 institutional holders

Ownership breakdown from public market data.

Top holders

American Securities LLC18.42%
Invesco Ltd.10.21%
Blackrock Inc.7.32%
Primecap Management Company5.02%
Legacy Advisors, LLC3.71%
Vanguard Portfolio Management LLC3.25%
Vanguard Capital Management LLC2.75%
FMR, LLC2.32%

Largest institutional holders — last updated 6/30/2026.

Forensic scorecard

Latest ROE of 1.5% is on the low side — the business earns a modest return on shareholder capital.

Net margin trend-4.0% → 0.5%

Margin has expanded by about 4.5 points — the business is getting more profitable.

Return on equity1.5%

Latest ROE of 1.5% is on the low side — the business earns a modest return on shareholder capital.

Computed by MarketChacha from reported figures (SEC XBRL). Education, not a rating or recommendation.

What's expected next

Next quarter

Rev $3.3B · EPS 0.66

Est. earnings growth +4.0%

Next fiscal year

Rev $14.1B · EPS 2.64

Est. earnings growth +7.2%

Analyst consensus estimates — not the company's own guidance.

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P/E ROE ROCE Margins Market cap

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Financials at a glance

Source: SEC XBRL

Annual

Quarterly · last 8

Revenue (FY2025)

$14.4B

Net margin

0.5%

ROE

1.5%

Revenue CAGR (2y)

+35.3%

EPS (FY2025)

0.27

Net profit (FY2025)

$66.0M

Ask MarketChacha about AMTM

Get a cited, plain-English answer — the “why”, not just data. Finance research only, never buy/sell advice.

Why it moved

Aug 4, 2026
No clear company-specific catalyst identified; the stock moved with the broader market or sector ahead of its upcoming Q3 earnings call.
· confidence: low
Jul 27, 2026
Amentum rose with the broader defense sector following strong Q2 results and raised guidance from peers Lockheed Martin and RTX earlier in the week, with no company-specific news or filing on July 27.
source 1 ↗source 2 ↗· confidence: low

Daily moves with the verified reason behind them. Education only — not investment advice.

Financials

Yearly

Period	Revenue	Net profit	EPS	Net margin	ROE
FY2025	$14.4B	$66.0M	0.27	0.5%	1.5%
FY2024	$8.4B	$-82.0M	-0.90	-1.0%	-1.8%
FY2023	$7.9B	$-314.0M	-3.49	-4.0%	-83.7%

Quarterly

Period	Revenue	Net profit	EPS	Net margin
2026Q2	$3.5B	$54.0M	0.22	1.6%
2026Q1	$3.2B	$44.0M	0.18	1.4%
2025Q2	$3.6B	$10.0M	0.04	0.3%
2025Q1	$3.5B	$4.0M	0.02	0.1%
2024Q4	$3.4B	$12.0M	0.05	0.4%
2024Q2	$2.1B	$-26.0M	-0.29	-1.2%
2024Q1	$2.1B	$-41.0M	-0.46	-2.0%
2023Q4	$2.0B	$-41.0M	-0.46	-2.1%

Figures as reported, in reporting currency. Source: SEC XBRL.

Filings & announcements

2026

8-K — Results of operations, Exhibits
SEC8/10/2026material
10-Q — FORM 10-Q
SEC5/12/2026
8-K — Results of operations, Exhibits
SEC5/11/2026material
8-K — Material agreement
SEC4/28/2026material
10-Q — FORM 10-Q
SEC2/10/2026
8-K — Shareholder vote results
SEC2/10/2026material
8-K — Results of operations, Exhibits
SEC2/9/2026material

2025

10-K — FORM 10-K
SEC11/25/2025
8-K — Results of operations, Exhibits
SEC11/24/2025material
10-Q — FORM 10-Q
SEC8/6/2025
8-K — Results of operations, Exhibits
SEC8/5/2025material

In the news

Education and discussion only — not investment advice. Financials from official filings (SEC/BSE) and reported company statements; market figures (delayed market data) are delayed and shown for reference only. Verify with the linked sources before acting.