Koppers (KOP) Stock Chart & Stock Price History $25.29 -0.29 (-1.13%) Closing price 04/25/2025 03:59 PM EasternExtended Trading$25.26 -0.03 (-0.12%) As of 04/25/2025 04:20 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 ForecastsChartCompetitorsDividendEarningsFinancialsHeadlinesInsider TradesOptions ChainOwnershipSEC FilingsShort InterestSustainabilityTrendsBuy This Stock Koppers Stock Price Performance 5 Day Performance+2.28%1 Month Performance-9.44%3 Month Performance-17.55%6 Month Performance-27.29%Year-To-Date Performance-21.94%1 Year Performance-52.04% Receive KOP Stock News and Ratings via EmailSign-up to receive the latest news and ratings for Koppers and its competitors with MarketBeat's FREE daily newsletter. Email Address KOP Stock Chart for Monday, April, 28, 2025 KOP Chart by TradingView Koppers Stock Price History Daily Weekly Monthly Time Frame Custom Range 1 Month 3 Months 6 Months Year-to-Date 1 Year Time Frame * Start Date * End Date Export to Excel DateOpening PriceClosing PriceHighLowVolumeMarket Capitalization04/25/2025$25.56$25.29-1.06%$25.32$24.66168,597 shs$518.09 million04/24/2025$24.73$25.56+3.37%$25.75$24.43156,194 shs$523.62 million04/23/2025$24.58$24.73+0.61%$25.67$24.45247,308 shs$506.56 million04/22/2025$24.55$24.58+0.11%$25.19$24.20352,194 shs$503.46 million04/21/2025$24.88$24.55-1.34%$24.62$23.94145,867 shs$502.93 million04/18/2025$24.88$24.88$25.17$24.21146,160 shs$509.75 million04/17/2025$24.22$24.88+2.74%$25.17$24.21146,160 shs$509.75 million04/16/2025$24.49$24.22-1.08%$24.54$23.54115,615 shs$496.17 million04/15/2025$25.01$24.49-2.10%$25.11$24.21101,716 shs$501.60 million04/14/2025$24.92$25.01+0.37%$25.16$24.53129,998 shs$512.36 million Get the Latest News and Ratings for KOP and Related StocksEnter your email address below to receive the latest news and analysts' ratings for Koppers and its competitors with MarketBeat's FREE daily newsletter. 04/11/2025$24.39$24.92+2.18%$25.08$24.08112,724 shs$510.45 million04/10/2025$25.60$24.39-4.75%$25.10$23.64208,946 shs$499.55 million04/09/2025$23.37$25.60+9.54%$26.29$23.20158,471 shs$524.44 million04/09/2025$23.37$25.60+9.54%$26.29$23.20158,471 shs$524.44 million04/08/2025$24.31$23.37-3.86%$25.23$22.99207,008 shs$478.76 million04/08/2025$24.31$23.37-3.86%$25.23$22.99207,008 shs$478.76 million04/07/2025$25.02$24.31-2.85%$25.94$23.33244,488 shs$497.97 million04/04/2025$26.01$25.02-3.79%$25.10$23.81275,004 shs$512.56 million04/03/2025$28.00$26.01-7.13%$26.66$25.58164,436 shs$532.74 million04/02/2025$27.71$28.00+1.06%$28.04$27.0899,970 shs$573.61 million04/01/2025$28.02$27.71-1.11%$28.04$27.32114,300 shs$567.57 million03/31/2025$27.93$28.02+0.33%$28.16$27.55125,646 shs$573.96 million03/28/2025$29.22$27.93-4.44%$29.05$27.38167,893 shs$572.07 million03/27/2025$28.70$29.22+1.81%$29.31$28.13135,956 shs$598.66 million Related Companies Kronos Worldwide Stock Chart Tredegar Stock Chart LyondellBasell Industries Stock Chart Westlake Stock Chart Cabot Stock Chart Hawkins Stock Chart Trex Stock Chart Louisiana-Pacific Stock Chart Companhia Siderúrgica Nacional Stock Chart Fortuna Silver Mines Stock Chart Receive KOP Stock News and Ratings via EmailSign-up to receive the latest news and ratings for Koppers and its competitors with MarketBeat's FREE daily newsletter. 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