Trinseo (TSE) Stock Chart & Stock Price History $3.72 -0.17 (-4.24%) Closing price 04/3/2025 03:59 PM EasternExtended Trading$3.72 0.00 (0.00%) As of 04/3/2025 05:16 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 AnalysisChartCompetitorsDividendEarningsFinancialsHeadlinesInsider TradesOptions ChainOwnershipSEC FilingsShort InterestSustainabilityTrendsBuy This Stock Trinseo Stock Price Performance 5 Day Performance+0.87%1 Month Performance-19.74%3 Month Performance-29.52%6 Month Performance-42.01%Year-To-Date Performance-27.45%1 Year Performance-8.19% 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 TSE Stock Chart for Friday, April, 4, 2025 TSE Chart by TradingViewRemove Ads Trinseo 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 Capitalization04/02/2025$3.75$3.90+4.14%$3.90$3.68129,550 shs$138.38 million04/01/2025$3.67$3.75+2.04%$3.83$3.56268,699 shs$132.88 million03/31/2025$3.67$3.67+0.05%$3.75$3.51180,686 shs$130.22 million03/28/2025$3.88$3.67-5.34%$3.87$3.62285,532 shs$138.02 million03/27/2025$4.04$3.88-3.97%$4.06$3.81168,981 shs$137.49 million03/26/2025$3.92$4.04+2.93%$4.08$3.86286,065 shs$143.17 million03/25/2025$4.01$3.92-2.12%$4.10$3.88292,505 shs$139.09 million03/24/2025$4.19$4.01-4.30%$4.32$3.93420,166 shs$142.10 million03/21/2025$4.00$4.19+4.52%$4.27$3.791.51 million shs$148.49 million03/20/2025$4.13$4.00-2.93%$4.07$3.85446,071 shs$142.07 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. 03/19/2025$4.27$4.13-3.28%$4.43$4.09280,107 shs$146.36 million03/18/2025$4.43$4.27-3.62%$4.46$4.19223,291 shs$151.33 million03/17/2025$4.30$4.43+2.91%$4.54$4.24263,530 shs$157.00 million03/14/2025$4.07$4.30+5.78%$4.35$4.05320,071 shs$152.57 million03/13/2025$4.38$4.07-7.09%$4.42$3.94364,946 shs$144.23 million03/12/2025$4.17$4.38+5.04%$4.41$4.13240,044 shs$155.23 million03/11/2025$4.42$4.17-5.77%$4.36$4.11256,988 shs$147.78 million03/10/2025$4.73$4.42-6.63%$4.66$4.39295,970 shs$156.83 million03/07/2025$5.00$4.73-5.32%$5.05$4.65269,082 shs$167.59 million03/06/2025$4.85$5.00+3.20%$5.11$4.62373,242 shs$177.01 million03/05/2025$4.60$4.85+5.33%$4.91$4.61262,798 shs$171.52 million03/04/2025$4.61$4.60-0.22%$4.70$4.26343,562 shs$162.85 million03/03/2025$4.96$4.61-6.96%$5.11$4.52260,128 shs$163.20 million Related Companies Valhi Stock Chart ASP Isotopes Stock Chart Luxfer Stock Chart Standard Lithium Stock Chart ARQ Stock Chart Aduro Clean Technologies Stock Chart Zentek Stock Chart Verde Clean Fuels Stock Chart Origin Materials Stock Chart Aemetis 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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