Trinseo (TSE) Stock Chart & Stock Price History $3.02 -0.03 (-0.98%) Closing price 03:59 PM EasternExtended Trading$3.04 +0.02 (+0.50%) As of 04:16 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 45.54%, with a year-to-date return of -40.78%. In the past month, the stock has decreased 0.56%, reflecting recent market activity. As of the latest close, Trinseo traded at $3.04 with a market cap of $108.38 million and volume of 507,706 shares. Five years ago, the stock traded at $21.61, representing a 86.02% decrease over that period. At the time, it had a market cap of $847.38 million and a volume of 639,700 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-11.82%1 Month Performance-0.56%3 Month Performance-22.56%Year-To-Date Performance-40.78%1 Year Performance+45.54%5 Year Performance-86.02% TSE Stock Chart for Wednesday, July, 2, 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 Capitalization07/01/2025$3.14$3.04-3.18%$3.34$2.97507,706 shs$108.38 million06/30/2025$3.43$3.14-8.32%$3.56$3.10490,397 shs$111.94 million06/27/2025$3.41$3.43+0.59%$3.47$3.334.35 million shs$122.10 million06/26/2025$3.23$3.41+5.42%$3.44$3.26230,359 shs$121.39 million06/25/2025$3.34$3.23-3.15%$3.36$3.20227,429 shs$115.15 million06/24/2025$3.41$3.34-2.06%$3.59$3.29254,634 shs$118.89 million06/23/2025$3.73$3.41-8.76%$3.71$3.23416,162 shs$121.39 million06/20/2025$3.79$3.73-1.40%$3.84$3.66817,515 shs$133.05 million06/19/2025$3.79$3.79$3.85$3.68228,044 shs$134.94 million06/18/2025$3.72$3.79+1.88%$3.85$3.68228,044 shs$134.94 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. 06/17/2025$3.67$3.72+1.28%$3.81$3.52241,799 shs$132.44 million06/16/2025$3.40$3.67+7.88%$3.78$3.46315,302 shs$130.76 million06/13/2025$3.40$3.40$3.51$3.31203,697 shs$121.21 million06/12/2025$3.40$3.40-0.03%$3.45$3.26179,698 shs$121.21 million06/11/2025$3.17$3.40+7.15%$3.45$3.17262,096 shs$121.25 million06/10/2025$3.13$3.17+1.28%$3.29$3.14150,499 shs$113.15 million06/09/2025$3.11$3.13+0.67%$3.25$3.13141,062 shs$111.73 million06/06/2025$3.03$3.11+2.74%$3.15$3.01173,994 shs$110.98 million06/05/2025$3.00$3.03+1.00%$3.18$2.95179,711 shs$108.02 million06/04/2025$3.15$3.00-4.64%$3.22$2.92301,024 shs$106.95 million06/03/2025$3.04$3.15+3.59%$3.34$2.98284,413 shs$112.16 million06/02/2025$3.07$3.04-1.07%$3.15$2.97367,933 shs$108.27 million Related Companies Valhi Stock Chart Luxfer Stock Chart Aduro Clean Technologies Stock Chart ARQ Stock Chart Verde Clean Fuels Stock Chart Zentek Stock Chart Aemetis Stock Chart Comstock Stock Chart Alto Ingredients Stock Chart Loop Industries 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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