Tecogen (TGEN) Stock Chart & Stock Price History $8.35 -0.04 (-0.48%) As of 04:10 PM Eastern Add Compare Share Share Chart Stock AnalysisChartEarningsHeadlinesOwnershipSEC FilingsShort InterestBuy This Stock Tecogen Stock Price Performance The Tecogen (TGEN) stock chart highlights key performance trends across multiple timeframes. Over the last 12 months, the stock's price has increased 1,078.00%, with a year-to-date return of 469.97%. In the past month, the stock has increased 14.07%, reflecting recent market activity. As of the latest close, Tecogen traded at $8.39 with a market cap of $212.01 million and volume of 1.26 million shares. Five years ago, the stock traded at $0.80, representing a 943.88% increase over that period. At the time, it had a market cap of $19.16 million and a volume of 4,064 shares. Receive TGEN Stock News and Ratings via EmailSign-up to receive the latest news and ratings for Tecogen and its competitors with MarketBeat's FREE daily newsletter. Email Address 5 Day Performance+8.16%1 Month Performance+14.07%3 Month Performance+315.01%Year-To-Date Performance+469.97%1 Year Performance+1,078.00%5 Year Performance+943.88% TGEN Stock Chart for Thursday, July, 24, 2025 TGEN Chart by TradingView Tecogen 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 Capitalization07/24/2025$8.39$8.35-0.48%$8.68$8.18577,104 shs$211.00 million07/23/2025$7.01$8.39+19.69%$8.49$7.171.26 million shs$212.01 million07/22/2025$7.10$7.01-1.27%$7.42$6.72935,606 shs$177.14 million07/21/2025$7.72$7.10-8.03%$7.95$7.061.30 million shs$179.41 million07/18/2025$5.78$7.72+33.56%$8.09$5.905.77 million shs$195.08 million07/17/2025$6.08$5.78-4.93%$6.18$5.631.92 million shs$146.06 million07/16/2025$6.32$6.08-3.80%$6.44$5.921.17 million shs$153.64 million07/15/2025$7.50$6.32-15.73%$7.37$6.251.28 million shs$159.70 million07/14/2025$7.93$7.50-5.42%$7.85$7.01484,267 shs$189.52 million07/11/2025$8.16$7.93-2.82%$8.38$7.66281,359 shs$200.38 million Get the Latest News and Ratings for TGEN and Related StocksEnter your email address below to receive the latest news and analysts' ratings for Tecogen and its competitors with MarketBeat's FREE daily newsletter. 07/10/2025$8.73$8.16-6.53%$9.31$7.81449,916 shs$206.20 million07/09/2025$8.43$8.73+3.56%$8.76$8.15206,791 shs$220.60 million07/08/2025$7.95$8.43+6.04%$8.98$7.95460,703 shs$213.02 million07/07/2025$8.34$7.95-4.68%$8.69$7.75460,759 shs$200.89 million07/04/2025$8.34$8.34$8.95$8.22433,170 shs$210.74 million07/03/2025$9.13$8.34-8.65%$8.95$8.22433,170 shs$210.74 million07/02/2025$7.08$9.13+28.95%$9.38$7.051.33 million shs$230.71 million07/01/2025$6.80$7.08+4.12%$7.11$6.26528,197 shs$178.91 million06/30/2025$7.15$6.80-4.90%$7.74$6.74324,031 shs$171.83 million06/27/2025$7.49$7.15-4.54%$7.61$7.00253,308 shs$180.67 million06/26/2025$6.91$7.49+8.39%$7.85$7.00409,804 shs$189.27 million06/25/2025$7.32$6.91-5.60%$7.22$6.82369,694 shs$174.61 million06/24/2025$7.42$7.32-1.35%$7.62$6.69763,108 shs$184.97 million06/23/2025$6.13$7.42+21.04%$7.54$6.101.01 million shs$187.50 million Related Companies Palladyne AI Stock Price Chart A2Z Cust2Mate Solutions Stock Price Chart Mestek Stock Price Chart OMS Energy Technologies Stock Price Chart AirJoule Technologies Stock Price Chart Gencor Industries Stock Price Chart Richtech Robotics Stock Price Chart Perma-Pipe International Stock Price Chart Taylor Devices Stock Price Chart Save The World Air Stock Price Chart Receive TGEN Stock News and Ratings via EmailSign-up to receive the latest news and ratings for Tecogen and its competitors with MarketBeat's FREE daily newsletter. 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