Costain Group (COST) Stock Chart & Stock Price History GBX 132.60 +1.60 (+1.22%) As of 11:56 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 31.29%, with a year-to-date return of 25.09%. In the past month, the stock has decreased 1.34%, reflecting recent market activity. As of the latest close, Costain Group traded at GBX 131 with a market cap of £349.25 million and volume of 857,968 shares. Five years ago, the stock traded at GBX 40.50, representing a 227.41% increase over that period. At the time, it had a market cap of £111.36 million and a volume of 900,693 shares. 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Read our full terms of service and privacy policy. 5 Day Performance+2.95%1 Month Performance-1.34%3 Month Performance-10.34%Year-To-Date Performance+25.09%1 Year Performance+31.29%5 Year Performance+227.41% COST Stock Chart for Monday, September, 29, 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 Capitalization09/26/2025GBX 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 million09/18/2025GBX 128GBX 128.20+0.16%GBX 132.80GBX 127.40521,398 shs£341.79 million09/17/2025GBX 125.38GBX 128+2.09%GBX 128.20GBX 124.405.03 million shs£341.25 million09/16/2025GBX 126.40GBX 125.38-0.81%GBX 127.60GBX 124.401.13 million shs£334.27 million09/15/2025GBX 126.20GBX 126.40+0.16%GBX 128.20GBX 125783,953 shs£336.99 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. 09/12/2025GBX 129.80GBX 126.20-2.77%GBX 129.20GBX 126673,297 shs£336.45 million09/11/2025GBX 129GBX 129.80+0.62%GBX 130.20GBX 1271.17 million shs£346.05 million09/10/2025GBX 128.60GBX 129+0.31%GBX 130GBX 127.60539,877 shs£343.92 million09/09/2025GBX 129.13GBX 128.60-0.41%GBX 134GBX 127.87750,037 shs£342.85 million09/08/2025GBX 128.60GBX 129.13+0.41%GBX 131.48GBX 128.601.23 million shs£344.26 million09/05/2025GBX 130.60GBX 128.60-1.53%GBX 131.60GBX 127.206.37 million shs£345.24 million09/04/2025GBX 131.60GBX 130.60-0.76%GBX 131.20GBX 128.601.38 million shs£350.61 million09/03/2025GBX 133GBX 131.60-1.05%GBX 134GBX 130.801.62 million shs£353.29 million09/02/2025GBX 135GBX 133-1.48%GBX 135.80GBX 1312.83 million shs£357.05 million09/01/2025GBX 134.40GBX 135+0.45%GBX 135.80GBX 133.981.94 million shs£362.42 million08/29/2025GBX 134.40GBX 134.40GBX 136.40GBX 133.203.17 million shs£359.99 million08/28/2025GBX 132.20GBX 134.40+1.66%GBX 135.20GBX 130.202.57 million shs£359.99 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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