Amentum (AMTM) Stock Chart & Stock Price History $25.23 -0.31 (-1.21%) Closing price 07/18/2025 03:59 PM EasternExtended Trading$25.38 +0.15 (+0.57%) As of 07/18/2025 07:59 PM Eastern Extended trading is trading that happens on electronic markets outside of regular trading hours. This is a fair market value extended hours price provided by Polygon.io. Learn more. Add Compare Share Share Chart Stock AnalysisAnalyst ForecastsChartCompetitorsEarningsFinancialsHeadlinesInsider TradesOwnershipSEC FilingsTrendsBuy This Stock Amentum Stock Price Performance The Amentum (AMTM) stock chart highlights key performance trends across multiple timeframes. Since the beginning of the year, the stock increased 19.97%. In the past month, the stock has increased 15.39%, reflecting recent market activity. As of the latest close, Amentum traded at $25.23 with a market cap of $6.14 billion and volume of 2.35 million shares. 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Email Address 5 Day Performance+6.08%1 Month Performance+15.39%3 Month Performance+34.60%Year-To-Date Performance+19.97% AMTM Stock Chart for Sunday, July, 20, 2025 AMTM Chart by TradingView Amentum Stock Price History Daily Weekly Monthly Yearly Time Frame Custom Range 1 Month 3 Months 6 Months Year-to-Date 1 Year 3 Year 5 Year Time Frame Start Date End Date Export to Excel DateOpening PriceClosing PriceHighLowVolumeMarket Capitalization07/18/2025$25.61$25.23-1.48%$25.86$25.062.35 million shs$6.14 billion07/17/2025$24.27$25.61+5.52%$25.69$24.402.75 million shs$6.23 billion07/16/2025$23.79$24.27+2.04%$24.37$23.481.05 million shs$5.91 billion07/15/2025$24.21$23.79-1.74%$24.49$23.701.85 million shs$5.79 billion07/14/2025$23.68$24.21+2.22%$24.27$23.201.36 million shs$5.89 billion07/11/2025$24.04$23.68-1.48%$24.00$23.211.43 million shs$5.76 billion07/10/2025$24.13$24.04-0.39%$24.32$23.821.25 million shs$5.85 billion07/09/2025$24.23$24.13-0.41%$24.42$23.781.02 million shs$5.87 billion07/08/2025$24.23$24.23$24.67$24.032.01 million shs$5.90 billion07/07/2025$24.33$24.23-0.39%$24.63$23.931.45 million shs$5.90 billion Get the Latest News and Ratings for AMTM and Related StocksEnter your email address below to receive the latest news and analysts' ratings for Amentum and its competitors with MarketBeat's FREE daily newsletter. 07/04/2025$24.33$24.33$24.57$24.04814,090 shs$5.92 billion07/03/2025$24.30$24.33+0.10%$24.57$24.04814,090 shs$5.92 billion07/02/2025$23.86$24.30+1.84%$24.33$23.641.33 million shs$5.91 billion07/01/2025$23.61$23.86+1.06%$23.99$23.111.41 million shs$5.81 billion06/30/2025$23.47$23.61+0.60%$23.82$23.421.34 million shs$5.74 billion06/27/2025$24.07$23.47-2.48%$24.20$23.082.83 million shs$5.71 billion06/26/2025$23.19$24.07+3.78%$24.33$23.412.75 million shs$5.86 billion06/25/2025$22.34$23.19+3.81%$23.66$22.472.91 million shs$5.64 billion06/24/2025$21.94$22.34+1.81%$22.45$21.821.16 million shs$5.44 billion06/23/2025$21.87$21.94+0.34%$22.14$21.311.31 million shs$5.34 billion06/20/2025$21.87$21.87-0.02%$22.12$21.561.88 million shs$5.32 billion06/19/2025$21.87$21.87$22.49$21.642.98 million shs$5.32 billion Related Companies CPAY Stock Price Chart GIB Stock Price Chart TOST Stock Price Chart AER Stock Price Chart RBA Stock Price Chart GRAB Stock Price Chart Z Stock Price Chart ZG Stock Price Chart TRU Stock Price Chart GFL Stock Price Chart Receive AMTM Stock News and Ratings via EmailSign-up to receive the latest news and ratings for Amentum and its competitors with MarketBeat's FREE daily newsletter. 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