Costain Group (COST) Stock Chart & Stock Price History GBX 150.79 +0.79 (+0.53%) As of 04:45 AM Eastern Add Compare Share Share Chart Stock AnalysisAnalyst ForecastsChartCompetitorsDividendEarningsHeadlinesInsider TradesBuy This Stock Costain Group Stock Price Performance The Costain Group (COST) stock chart highlights key performance trends across multiple timeframes. Over the last 12 months, the stock's price has increased 47.11%, with a year-to-date return of 42.25%. In the past month, the stock has increased 18.16%, reflecting recent market activity. As of the latest close, Costain Group traded at GBX 150 with a market cap of £399.90 million and volume of 1.89 million shares. Five years ago, the stock traded at GBX 39.45, representing a 282.23% increase over that period. At the time, it had a market cap of £111.36 million and a volume of 597,101 shares. 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Read our full terms of service and privacy policy. 5 Day Performance-0.40%1 Month Performance+18.16%3 Month Performance-3.59%Year-To-Date Performance+42.25%1 Year Performance+47.11%5 Year Performance+282.23% COST Stock Chart for Monday, October, 20, 2025 COST Chart by TradingView Costain Group 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 Capitalization10/17/2025GBX 151.80GBX 150-1.19%GBX 151.60GBX 1481.89 million shs£399.90 million10/16/2025GBX 151.40GBX 151.80+0.26%GBX 152.40GBX 150493,165 shs£404.70 million10/15/2025GBX 150GBX 151.40+0.93%GBX 156GBX 149811,039 shs£403.64 million10/14/2025GBX 155.69GBX 150-3.66%GBX 151.80GBX 148.8023.55 million shs£399.90 million10/13/2025GBX 140.20GBX 155.69+11.05%GBX 159.60GBX 1453.77 million shs£415.08 million10/10/2025GBX 141.60GBX 140.20-0.99%GBX 144.80GBX 139.808.10 million shs£373.78 million10/09/2025GBX 140GBX 141.60+1.14%GBX 142.60GBX 139.40628,040 shs£377.51 million10/08/2025GBX 138GBX 140+1.45%GBX 140GBX 136.60726,130 shs£373.24 million10/07/2025GBX 139.40GBX 138-1.00%GBX 141.40GBX 138394,081 shs£367.91 million10/06/2025GBX 141.20GBX 139.40-1.27%GBX 141.80GBX 138.40443,209 shs£371.65 million Get the Latest News and Ratings for COST and Related StocksEnter your email address below to receive the latest news and analysts' ratings for Costain Group and its competitors with MarketBeat's FREE daily newsletter. 10/03/2025GBX 138.40GBX 141.20+2.02%GBX 141.40GBX 138.20906,478 shs£376.44 million10/02/2025GBX 135.20GBX 138.40+2.37%GBX 139.60GBX 1353.24 million shs£368.98 million10/01/2025GBX 135GBX 135.20+0.15%GBX 136.60GBX 1341.09 million shs£360.45 million09/30/2025GBX 132.60GBX 135+1.81%GBX 135.60GBX 130.602.35 million shs£359.91 million09/29/2025GBX 131GBX 132.60+1.22%GBX 133.40GBX 130.60913,741 shs£353.52 million09/26/2025GBX 127.60GBX 131+2.66%GBX 131.80GBX 127.60857,968 shs£349.25 million09/25/2025GBX 128.80GBX 127.60-0.93%GBX 129.20GBX 126566,372 shs£340.19 million09/24/2025GBX 131.60GBX 128.80-2.13%GBX 133GBX 128.401.75 million shs£343.39 million09/23/2025GBX 129.80GBX 131.60+1.39%GBX 132GBX 125.60946,206 shs£350.85 million09/22/2025GBX 127.61GBX 129.80+1.72%GBX 129.80GBX 126639,685 shs£346.05 million09/19/2025GBX 128.20GBX 127.61-0.46%GBX 130.20GBX 126.601.35 million shs£340.21 million Related Companies PETS Stock Price Chart BOOT Stock Price Chart BIG Stock Price Chart HVT Stock Price Chart AEO Stock Price Chart DSG Stock Price Chart TSCO Stock Price Chart JD Stock Price Chart BBY Stock Price Chart RS1 Stock Price Chart Receive COST Stock News and Ratings via EmailSign-up to receive the latest news and ratings for Costain Group and its competitors with MarketBeat's FREE daily newsletter. 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