Costain Group (COST) Stock Chart & Stock Price History GBX 165.80 +3.40 (+2.09%) As of 11:51 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 86.93%, with a year-to-date return of 56.42%. In the past month, the stock has increased 9.08%, reflecting recent market activity. As of the latest close, Costain Group traded at GBX 162.40 with a market cap of £434.99 million and volume of 947,194 shares. Five years ago, the stock traded at GBX 58.50, representing a 183.42% increase over that period. At the time, it had a market cap of £160.85 million and a volume of 876,310 shares. 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Email Address 5 Day Performance-0.98%1 Month Performance+9.08%3 Month Performance+35.68%Year-To-Date Performance+56.42%1 Year Performance+86.93%5 Year Performance+183.42% COST Stock Chart for Friday, August, 15, 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 Capitalization08/14/2025GBX 164.80GBX 162.40-1.46%GBX 166.40GBX 161947,194 shs£434.99 million08/13/2025GBX 169.72GBX 164.80-2.90%GBX 171.20GBX 164.601.37 million shs£441.41 million08/12/2025GBX 166.63GBX 169.72+1.85%GBX 170.80GBX 165.601.93 million shs£454.59 million08/11/2025GBX 167.44GBX 166.63-0.48%GBX 169.60GBX 165.23903,002 shs£446.32 million08/08/2025GBX 167.02GBX 167.44+0.25%GBX 169.40GBX 165.601.38 million shs£448.49 million08/07/2025GBX 167.40GBX 167.02-0.23%GBX 168.40GBX 1661.29 million shs£447.36 million08/06/2025GBX 165.60GBX 167.40+1.09%GBX 169.60GBX 165.60728,993 shs£448.38 million08/05/2025GBX 164GBX 165.60+0.98%GBX 168.27GBX 163.801.95 million shs£443.56 million08/04/2025GBX 162.40GBX 164+0.99%GBX 165GBX 160.801.42 million shs£439.27 million08/01/2025GBX 166.40GBX 162.40-2.40%GBX 165.40GBX 160.80963,171 shs£434.99 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. 07/31/2025GBX 161.20GBX 166.40+3.23%GBX 166.80GBX 160.202.27 million shs£445.70 million07/30/2025GBX 162GBX 161.20-0.49%GBX 163.02GBX 160.20932,165 shs£431.77 million07/29/2025GBX 157.23GBX 162+3.04%GBX 163.20GBX 157.604.84 million shs£433.91 million07/28/2025GBX 158GBX 157.23-0.49%GBX 159.82GBX 156.801.49 million shs£421.12 million07/25/2025GBX 158.16GBX 158-0.10%GBX 158.40GBX 1561.56 million shs£423.20 million07/24/2025GBX 157.20GBX 158.16+0.61%GBX 159GBX 153.80968,257 shs£423.62 million07/23/2025GBX 154.97GBX 157.20+1.44%GBX 158GBX 155.80865,575 shs£421.06 million07/22/2025GBX 159.34GBX 154.97-2.74%GBX 157.20GBX 154.461.34 million shs£415.07 million07/21/2025GBX 156.40GBX 159.34+1.88%GBX 159.80GBX 156.201.03 million shs£426.78 million07/18/2025GBX 154.40GBX 156.40+1.30%GBX 157.60GBX 1501.30 million shs£418.92 million07/17/2025GBX 152.60GBX 154.40+1.18%GBX 155GBX 152.80836,786 shs£413.56 million07/16/2025GBX 152GBX 152.60+0.39%GBX 153.04GBX 151.802.21 million shs£408.74 million07/15/2025GBX 151GBX 152+0.66%GBX 153.20GBX 150.201.05 million shs£407.13 million07/14/2025GBX 148.36GBX 151+1.78%GBX 151.60GBX 149.50506,495 shs£404.45 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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