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NYSE · AMTM

Amentum Holdings, Inc.

Industrials · Aerospace & Defense

$18.77

Up+$0.53 (+2.91%)

Updated Oct 7, 2026, 11:29 AM

SID Score

3.1/10

Composite research score

Smart Money

58/100

Neutral

Market cap
7.28B
P/E ratio
74.37
Dividend yield
0.00%
52-week range
$17.72 – $30.85
Volume
1.89M
Avg. volume
2.19M

Price performance · AMTM

AMTM price history

1M range · 21 trading sessions · Daily adjusted prices

Prices through Oct 6, 2026

AMTM closed at $18.77 after 21 trading sessions, down 6.80% for the selected period.

Last close
$18.77
Period change
-6.80%
Period low
$18.12
Period high
$20.19
Daily close
View OHLC price history
AMTM OHLC price history, latest 40 sessions
DateOpenHighLowCloseVolume
Oct 6, 2026$18.41$18.93$18.31$18.771.89M
Oct 5, 2026$18.12$18.63$18.02$18.242M
Oct 2, 2026$18.59$18.59$17.72$18.142.31M
Oct 1, 2026$18.22$18.755$18.08$18.481.72M
Sep 30, 2026$18.24$18.41$18.06$18.121.63M
Sep 29, 2026$18.48$18.575$17.89$18.152.95M
Sep 28, 2026$19.00$19.04$18.48$18.491.19M
Sep 25, 2026$19.35$19.368$19.01$19.191.51M
Sep 24, 2026$19.64$19.81$19.385$19.40986.44K
Sep 23, 2026$19.92$20.06$19.64$19.711.2M
Sep 22, 2026$20.00$20.1136$19.41$19.702.13M
Sep 21, 2026$19.68$20.01$19.64$19.901.34M
Sep 18, 2026$20.27$20.33$19.50$19.604.42M
Sep 17, 2026$20.11$20.32$20.00$20.191.24M
Sep 16, 2026$20.09$20.40$19.65$19.881.37M
Sep 15, 2026$19.61$20.29$19.465$20.141.94M
Sep 14, 2026$19.70$19.81$19.47$19.741.64M
Sep 11, 2026$19.62$19.675$19.23$19.461.05M
Sep 10, 2026$19.36$19.78$19.21$19.561.2M
Sep 9, 2026$20.24$20.36$19.275$19.312.02M
Sep 8, 2026$20.10$20.25$19.68$20.142.48M

Latest AMTM news

The latest Smart Investors Daily articles mentioning AMTM.

Stock researchCompany · Overview

AMTM research

Overview

Company profile and research snapshot.

Company profile

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.

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Analyst outlook

Consensus and target data currently published for this company.

Consensus
—
Average target
$33.00
Implied upside
—
Analysts
—
AMTM recent ratings
DateFirmRatingTarget
Aug 17, 2026JP MorganNeutral—
Aug 12, 2026RBC CapitalSector Perform—
Aug 12, 2026UBSNeutral—
Aug 12, 2026BTIGBuy—
Jul 20, 2026B of A SecuritiesNeutral—
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Yahoo · Oct 3, 2026

Amentum Holdings (AMTM) Is Down 5.5% After Winning Preferred Supplier Role On $2.8 Billion Sellafield Deal

Sellafield Ltd. has selected an Amentum-led joint venture, OneAxIoM, as preferred supplier for its Projects and Asset Care Execution framework, a US$2.78 billion (£2.1 billion) program covering full lifecycle services for spent fuel management and related facilities over an initial nine-year term, with an optional six-year extension. This preferred supplier status, once contract terms are finalized, would deepen Amentum’s presence in complex nuclear asset care, potentially broadening its...

Yahoo · Oct 1, 2026

Deep Isolation Advances Nuclear Waste Disposal Demonstration With Issuance of Texas Drilling Permit

Regulatory Authorization Supports Deep Isolation’s Plans to Move Its Full-Scale, Non-Radioactive Commercialization Pilot Toward Construction and Field ActivitiesBERKELEY, Calif., Oct. 01, 2026 (GLOBE NEWSWIRE) -- Deep Isolation Nuclear, Inc. (OTCQB: DBHL) (“Deep Isolation” or the “Company”), a leading innovator in nuclear waste disposal technology, today announced that the Texas Railroad Commission has issued a drilling permit for the Company’s full-scale, non-radioactive Commercialization Pilot

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