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Amentum Holdings, Inc. (AMTM)

Sector: Services-Business Services, NEC

Industry: Aerospace & Defense

Amentum Holdings, Inc. logo

Amentum Holdings, Inc.

NYSE:AMTMIndustrials
-0.56%$21.25
AH$21.25+0.00%vs close
Mkt Cap$5.2B
Float197.49M
O/S244.51M
Inst Own84.8%
SI6.4%
Dilution
Amentum Holdings, Inc. logoNYSE:AMTM$21.25-0.56%
Historical Data
DateOpenHighLowCloseVolume
Nov 6, 202620.9921.2520.5321.251,133,051
Nov 5, 202622.1022.2620.9821.372,005,801
Nov 4, 202622.3222.5821.5722.232,166,080
Nov 3, 202622.1622.8221.6022.383,024,093
Nov 2, 202622.0022.5921.9422.472,792,582
Oct 30, 202622.0622.4721.5821.873,043,148
Oct 29, 202622.0022.3721.9322.072,022,540
Oct 28, 202621.5921.9021.3621.691,661,336
Oct 27, 202621.9722.2421.7321.752,007,186
Oct 26, 202621.8022.5021.8022.071,854,800
Oct 23, 202621.0221.7920.6421.762,079,940
Oct 22, 202620.0921.3520.0421.292,405,687
Oct 21, 202619.9720.3819.8220.151,629,431
Oct 20, 202619.4619.9419.2719.871,385,394
Oct 19, 202619.4319.6019.2719.481,223,174
Oct 16, 202619.1619.5918.9719.522,089,588
Oct 15, 202618.2319.1418.2319.091,479,824
Oct 14, 202618.3318.6718.0018.131,073,020
Oct 13, 202618.9718.9718.4718.521,215,854
Oct 12, 202619.4019.4718.9118.921,614,260
Analyst Coverage
Analyst Coverage
ConsensusHold
Price Target
Not available
Ratings Distribution
BUY
5
HOLD
6
SELL
0
TOTAL11
Insider Trades
InsiderTypeShares
Thompson Christopher M.T. profile photoThompson Christopher M.T.Withholding/Transfer4.3K
Mullen Sean Thomas profile photoMullen Sean ThomasOption Exercise9.1K
Mullen Sean Thomas profile photoMullen Sean ThomasAutomatic Sell2.8K
Johnson Travis Barton profile photoJohnson Travis BartonOption Exercise13.6K
Johnson Travis Barton profile photoJohnson Travis BartonAutomatic Sell4.1K
Bruning Jill L profile photoBruning Jill LOption Exercise9.1K
Shareholders
84.8%
Institutional
(458)
18.9%
Insiderⓘ
(16)
0.0%
5%+ Owners
(0)
-
Unattributed (incl. retail)ⓘ
Institutional84.8%
Insider18.9%
Sources: 13F, Form 4, 13D/13GO/S: 244.5M · as of 7 Aug 2026 · SEC cover page
Insiders & Institutional Holders

Insiders

Top institutional holders

About

Amentum Holdings, Inc. is a provider of critical, technology-driven services, serving both governmental and commercial sectors.

Its operations are structured around two distinct segments: Critical Mission Solutions and Cyber & Intelligence. The Critical Mission Solutions (CMS) segment delivers comprehensive support across various domains. This includes testing, training, and operational oversight for advanced missile defense systems.

It also furnishes IT and engineering expertise to both defense organizations and the burgeoning space sector. Moreover, CMS offers technological solutions to energy clients, encompassing installation, decommissioning, and vital environmental remediation efforts, in addition to specialized technical consulting services. Meanwhile, the Cyber & Intelligence (C&I) segment focuses on advanced cyber training and sophisticated data analytics for government professionals.

It also deploys cutting-edge communication systems and aerial mapping technologies for national security applications, alongside other specialized technical support for U.S. defense and intelligence agencies. Established on November 26, 2019, the company maintains its corporate headquarters in Chantilly, VA.

Key Metrics
Market Cap$5.20B
Enterprise Value--
P/E Ratio--
Est. Net Cash/Share--
Institutional Ownership84.82%

based on 244.51M shares outstanding

SectorIndustrials
IndustryAerospace & Defense
ExchangeNYSE
CountryUSUS
IPO DateSep 24, 2024
Shares Outstanding244.51M
Authorized Shares
Float197.49M
52-Week Range
$17.72$38.11
$21.25(17th percentile)
Volume
Average Daily Volume1.90M
1.13M today vs 1.90M avg(-40%)

30d Avg

1.90M

60d Avg

1.88M

90d Avg

2.01M

Earnings
Dividend History
No dividend history available
Compliance Status
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