Live Earnings Conference Call: Trinseo will host a live Q2 2025 earnings call on August 7, 2025 at 10:00AM ET. Follow this link to get details and listen to Trinseo's Q2 2025 earnings call when it goes live. Get details. Trinseo (TSE) Stock Chart & Stock Price History $2.59 -0.12 (-4.39%) Closing price 08/6/2025 03:59 PM EasternExtended Trading$2.43 -0.17 (-6.37%) As of 08/6/2025 07:56 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 AnalysisChartCompetitorsDividendEarningsHeadlinesInsider TradesOptions ChainOwnershipSEC FilingsShort InterestSustainabilityTrendsBuy This Stock Trinseo Stock Price Performance The Trinseo (TSE) stock chart highlights key performance trends across multiple timeframes. Over the last 12 months, the stock's price has increased 6.19%, with a year-to-date return of -49.20%. In the past month, the stock has decreased 11.27%, reflecting recent market activity. As of the latest close, Trinseo traded at $2.59 with a market cap of $92.37 million and volume of 344,708 shares. Five years ago, the stock traded at $25.17, representing a 89.71% decrease over that period. At the time, it had a market cap of $943.74 million and a volume of 337,125 shares. Receive TSE Stock News and Ratings via EmailSign-up to receive the latest news and ratings for Trinseo and its competitors with MarketBeat's FREE daily newsletter. Email Address 5 Day Performance+1.21%1 Month Performance-11.27%3 Month Performance-40.23%Year-To-Date Performance-49.20%1 Year Performance+6.19%5 Year Performance-89.71% TSE Stock Chart for Thursday, August, 7, 2025 TSE Chart by TradingView Trinseo 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 Capitalization08/06/2025$2.70$2.59-4.04%$2.76$2.55344,708 shs$92.37 million08/05/2025$2.63$2.70+2.62%$2.78$2.63322,050 shs$96.26 million08/04/2025$2.56$2.63+2.77%$2.66$2.56393,208 shs$93.80 million08/01/2025$2.68$2.56-4.48%$2.63$2.53263,598 shs$91.26 million07/31/2025$2.74$2.68-2.19%$2.74$2.63353,857 shs$95.54 million07/30/2025$2.79$2.74-1.62%$2.84$2.71375,662 shs$97.68 million07/29/2025$2.85$2.79-2.35%$2.92$2.74278,760 shs$99.29 million07/28/2025$2.96$2.85-3.68%$2.98$2.83344,019 shs$101.67 million07/25/2025$3.01$2.96-1.50%$3.00$2.89263,632 shs$105.56 million07/24/2025$3.16$3.01-4.96%$3.20$2.99242,034 shs$107.16 million Get the Latest News and Ratings for TSE and Related StocksEnter your email address below to receive the latest news and analysts' ratings for Trinseo and its competitors with MarketBeat's FREE daily newsletter. 07/23/2025$3.11$3.16+1.87%$3.19$3.04249,932 shs$112.76 million07/22/2025$2.88$3.11+7.81%$3.14$2.91326,592 shs$110.69 million07/21/2025$2.82$2.88+2.13%$2.95$2.79383,603 shs$102.67 million07/18/2025$2.83$2.82-0.18%$2.94$2.78340,121 shs$100.53 million07/17/2025$2.83$2.83$3.00$2.80343,320 shs$100.71 million07/16/2025$2.85$2.83-0.70%$2.93$2.80331,944 shs$100.71 million07/15/2025$2.94$2.85-3.07%$2.97$2.84312,806 shs$101.42 million07/14/2025$3.00$2.94-2.17%$2.99$2.85287,199 shs$104.63 million07/11/2025$3.10$3.00-3.23%$3.08$2.96254,798 shs$106.95 million07/10/2025$2.97$3.10+4.38%$3.14$2.95417,779 shs$110.52 million07/09/2025$2.96$2.97+0.34%$3.02$2.92300,780 shs$105.88 million07/08/2025$2.92$2.96+1.37%$3.12$2.92459,327 shs$105.52 million07/07/2025$3.16$2.92-7.59%$3.17$2.85502,275 shs$104.10 million Related Companies Luxfer Stock Chart Aduro Clean Technologies Stock Chart ARQ Stock Chart Aemetis Stock Chart Verde Clean Fuels Stock Chart Comstock Stock Chart Origin Materials Stock Chart LanzaTech Global Stock Chart Zentek Stock Chart Alto Ingredients Stock Chart Receive TSE Stock News and Ratings via EmailSign-up to receive the latest news and ratings for Trinseo and its competitors with MarketBeat's FREE daily newsletter. 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