Koppers (KOP) Stock Chart & Stock Price History $30.18 +1.39 (+4.84%) Closing price 08/22/2025 03:59 PM EasternExtended Trading$30.16 -0.02 (-0.07%) As of 08/22/2025 05:10 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 The Koppers (KOP) stock chart highlights key performance trends across multiple timeframes. Over the last 12 months, the stock's price has decreased 22.85%, with a year-to-date return of -6.85%. In the past month, the stock has decreased 11.90%, reflecting recent market activity. As of the latest close, Koppers traded at $30.18 with a market cap of $595.07 million and volume of 148,847 shares. Five years ago, the stock traded at $24.85, representing a 21.46% increase over that period. At the time, it had a market cap of $542.35 million and a volume of 124,530 shares. 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 5 Day Performance+1.73%1 Month Performance-11.90%3 Month Performance-0.23%Year-To-Date Performance-6.85%1 Year Performance-22.85%5 Year Performance+21.46% KOP Stock Chart for Saturday, August, 23, 2025 KOP Chart by TradingView Koppers 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 Capitalization08/22/2025$28.77$30.18+4.89%$30.47$28.94148,847 shs$595.07 million08/21/2025$29.33$28.77-1.89%$29.30$28.64266,681 shs$567.42 million08/20/2025$29.80$29.33-1.59%$29.90$29.25138,447 shs$578.33 million08/19/2025$29.67$29.80+0.44%$30.30$29.53143,088 shs$587.66 million08/18/2025$29.62$29.67+0.16%$29.90$29.46160,388 shs$585.05 million08/15/2025$30.71$29.62-3.56%$30.89$29.52223,009 shs$584.11 million08/14/2025$31.06$30.71-1.12%$31.01$30.43168,414 shs$605.64 million08/13/2025$29.70$31.06+4.59%$31.18$30.00169,137 shs$612.50 million08/12/2025$28.32$29.70+4.85%$30.40$28.50265,579 shs$594.24 million08/11/2025$28.85$28.32-1.83%$29.04$26.82308,061 shs$566.74 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. 08/08/2025$33.19$28.85-13.06%$29.57$26.79405,339 shs$577.29 million08/07/2025$32.47$33.19+2.22%$33.46$32.7296,568 shs$664.03 million08/06/2025$32.57$32.47-0.32%$32.60$32.2479,040 shs$649.63 million08/05/2025$31.78$32.57+2.49%$32.75$31.91102,931 shs$651.71 million08/04/2025$31.92$31.78-0.45%$32.36$31.7387,478 shs$635.86 million08/01/2025$32.87$31.92-2.89%$32.49$31.41116,697 shs$638.72 million07/31/2025$33.02$32.87-0.45%$33.12$32.51121,450 shs$657.73 million07/30/2025$33.77$33.02-2.22%$33.76$32.83113,950 shs$660.73 million07/29/2025$34.11$33.77-0.99%$34.18$33.6999,793 shs$675.76 million07/28/2025$34.54$34.11-1.23%$34.70$33.8494,690 shs$682.54 million07/25/2025$33.50$34.54+3.10%$34.65$33.40100,772 shs$691.05 million07/24/2025$34.26$33.50-2.22%$34.08$33.29116,093 shs$670.28 million07/23/2025$33.07$34.26+3.59%$34.31$33.31110,269 shs$685.50 million07/22/2025$32.19$33.07+2.75%$33.19$32.33180,766 shs$661.75 million Related Companies Linde Stock Chart Cabot Stock Chart H. B. Fuller Stock Chart Manitowoc Stock Chart Terex Stock Chart Westlake Stock Chart Kronos Worldwide Stock Chart Tredegar Stock Chart LyondellBasell Industries Stock Chart Hawkins 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. This page (NYSE:KOP) was last updated on 8/23/2025 by MarketBeat.com Staff From Our PartnersBONUS GUIDE - Ben Stein Prepares For the Next Financial CrisisWith inflation high, debt soaring, and global tensions rising, a financial storm may be brewing. Economist ...Goldco Precious Metals | SponsoredAlex’s “Next Magnificent Seven” stocksThe original “Magnificent Seven” turned $7K into $1.18 million. 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