Koppers (KOP) Stock Chart & Stock Price History $28.85 -4.42 (-13.29%) Closing price 08/8/2025 03:59 PM EasternExtended Trading$28.86 +0.01 (+0.03%) As of 08/8/2025 04:10 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 17.59%, with a year-to-date return of -10.96%. In the past month, the stock has decreased 16.98%, reflecting recent market activity. As of the latest close, Koppers traded at $28.85 with a market cap of $577.29 million and volume of 405,339 shares. Five years ago, the stock traded at $26.07, representing a 10.66% increase over that period. At the time, it had a market cap of $532.47 million and a volume of 176,363 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-9.21%1 Month Performance-16.98%3 Month Performance+6.61%Year-To-Date Performance-10.96%1 Year Performance-17.59%5 Year Performance+10.66% KOP Stock Chart for Saturday, August, 9, 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 Capitalization08/08/2025$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 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. 07/25/2025$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 million07/21/2025$32.35$32.19-0.51%$32.96$32.1494,166 shs$644.02 million07/18/2025$32.32$32.35+0.09%$32.62$31.92120,439 shs$647.32 million07/17/2025$32.43$32.32-0.35%$32.52$32.17105,557 shs$646.76 million07/16/2025$32.74$32.43-0.93%$32.93$32.13164,871 shs$649.00 million07/15/2025$33.68$32.74-2.79%$33.80$32.71124,630 shs$655.13 million07/14/2025$33.99$33.68-0.90%$33.94$33.07112,223 shs$673.92 million07/11/2025$34.70$33.99-2.05%$34.76$33.7687,925 shs$680.04 million07/10/2025$34.75$34.70-0.15%$35.61$34.53129,968 shs$694.29 million07/09/2025$33.69$34.75+3.15%$34.75$33.34190,026 shs$695.35 million07/08/2025$32.97$33.69+2.18%$34.38$33.00178,694 shs$674.14 million Related Companies Innospec Stock Chart Linde Stock Chart Cabot Stock Chart H. B. Fuller Stock Chart Kennametal Stock Chart Terex Stock Chart Westlake Stock Chart Kronos Worldwide Stock Chart Tredegar Stock Chart LyondellBasell Industries 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 8/9/2025 by MarketBeat.com Staff From Our PartnersHIDDEN IN THE BOOK OF GENESIS…“This land I will give to you…” — a 4,000-year-old line from Genesis may hold the key to unlocking a $150 tril...Paradigm Press | SponsoredMan Who Called Nvidia at $1.10 Says Buy This Now...In 2004, one man called Nvidia before just about anyone knew it existed. 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