Tecogen (TGEN) Stock Chart & Stock Price History $8.28 -0.64 (-7.17%) As of 09:48 AM Eastern Add Compare Share Share Chart Stock AnalysisAnalyst ForecastsChartEarningsHeadlinesOwnershipSEC 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 885.71%, with a year-to-date return of 465.19%. In the past month, the stock has increased 20.88%, reflecting recent market activity. As of the latest close, Tecogen traded at $8.92 with a market cap of $264.84 million and volume of 939,587 shares. Five years ago, the stock traded at $1.04, representing a 696.15% increase over that period. At the time, it had a market cap of $25.88 million and a volume of 70,541 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. Subscribe Now View SMS TermsBy entering your phone number and clicking the sign-up button, you agree to receive periodic text messages from MarketBeat at the phone number you submitted, including texts that may be sent using an automatic telephone dialing system. Message and data rates may apply. Message frequency will vary. Messages will consist of stock alerts, news stories, and partner advertisements/offers. Consent is not a condition of the purchase of any goods or services. Text HELP for help/customer support. Unsubscribe at any time by replying "STOP" to any text message that you receive from MarketBeat or by visiting our mailing preferences page. Read our full terms of service and privacy policy. 5 Day Performance-7.49%1 Month Performance+20.88%3 Month Performance+10.40%Year-To-Date Performance+465.19%1 Year Performance+885.71%5 Year Performance+696.15% TGEN Stock Chart for Tuesday, October, 14, 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 Capitalization10/13/2025$7.94$8.92+12.34%$9.20$8.18939,587 shs$264.84 million10/10/2025$8.95$7.94-11.28%$9.40$7.821.13 million shs$235.75 million10/09/2025$8.91$8.95+0.45%$9.29$8.59369,348 shs$265.73 million10/08/2025$9.18$8.91-2.94%$9.44$8.80493,624 shs$264.55 million10/07/2025$9.80$9.18-6.33%$9.95$8.93817,373 shs$272.56 million10/06/2025$9.22$9.80+6.29%$10.17$9.04923,244 shs$290.97 million10/03/2025$9.10$9.22+1.32%$9.83$9.07819,039 shs$273.75 million10/02/2025$8.40$9.10+8.33%$9.38$8.51809,996 shs$270.19 million10/01/2025$8.81$8.40-4.65%$8.93$8.27456,885 shs$249.40 million09/30/2025$8.21$8.81+7.31%$8.95$8.16615,495 shs$261.58 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. 09/29/2025$7.85$8.21+4.59%$8.60$7.98728,100 shs$243.76 million09/26/2025$8.17$7.85-3.92%$8.25$7.64579,233 shs$233.07 million09/25/2025$8.55$8.17-4.44%$8.48$7.65661,166 shs$242.58 million09/24/2025$8.72$8.55-1.95%$9.09$8.22500,147 shs$253.86 million09/23/2025$9.06$8.72-3.75%$10.25$8.601.29 million shs$258.91 million09/22/2025$8.75$9.06+3.54%$9.59$8.001.18 million shs$269 million09/19/2025$7.29$8.75+20.03%$8.95$7.441.67 million shs$259.80 million09/18/2025$7.11$7.29+2.53%$7.64$7.17556,634 shs$216.45 million09/17/2025$7.01$7.11+1.43%$7.41$6.90432,101 shs$211.10 million09/16/2025$7.35$7.01-4.63%$7.60$6.92534,179 shs$208.13 million09/15/2025$6.85$7.35+7.30%$7.39$7.00491,367 shs$218.23 million Related Companies Richtech Robotics Stock Price Chart NPK International Stock Price Chart Kornit Digital Stock Price Chart Palladyne AI Stock Price Chart Mestek Stock Price Chart AirJoule Technologies Stock Price Chart A2Z Cust2Mate Solutions Stock Price Chart Gencor Industries Stock Price Chart Perma-Pipe International Stock Price Chart OMS Energy Technologies 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. This page (OTCMKTS:TGEN) was last updated on 10/14/2025 by MarketBeat.com Staff From Our PartnersURGENT: The Market's 3 Red Flags Are FlashingHere’s the uncomfortable truth: The smartest investors in the world are already preparing for a crash befor...StockEarnings | SponsoredGold to $27,533?This week, U.S. gold reserves hit an unprecedented $1 TRILLION in value... And it's sparking urgent chatter...Stansberry Research | SponsoredRefund From 1933: Trump’s Reset May Create Instant WealthTrump's Reset Can Give Birth To America's Greatest Era Yet A 90-Year cycle may end soon, creating real weal...American Hartford Gold | SponsoredYour Bank Account Is No Longer SafeWhat If Washington Declared That: YOUR Money ISN'T Actually Yours? Sounds insane, but that's exactly what ...Priority Gold | SponsoredThe Army Just Got a New Drone SupplierA cutting-edge drone developer just secured a U.S. Army deal to supply its Flex FPV Modular Drones and build a...The Tomorrow Investor | SponsoredThis Crypto Is Set to Explode in JanuaryThe crypto summit Wall Street wants to stop Learn how to structure your portfolio like the top hedge funds...Crypto 101 Media | SponsoredWhat if your job didn’t matter — and neither did China’s chip ban?If you’ve been watching the headlines lately…You’ve seen how Nvidia and AMD just got the green light to resume...Timothy Sykes | Sponsored“Fed Proof” Your Bank Account with THESE 4 Simple StepsStarting as soon as a few months from now, the United States government will make a sweeping change to bank ac...Weiss Ratings | Sponsored Adding Choose a watchlist: Watchlist Adding You have already added ten stocks to your watchlist. Upgrade to MarketBeat All Access to add more stocks to your watchlist. Adding Tecogen Inc. Please log in to your account or sign up in order to add this asset to your watchlist. Share Tecogen With A Colleague Link copied to clipboard. Get 30 Days of MarketBeat All Access for Free Sign up for MarketBeat All Access to gain access to MarketBeat's full suite of research tools. Start Your 30-Day Trial MarketBeat All Access Features Best-in-Class Portfolio Monitoring Get personalized stock ideas. Compare portfolio to indices. Check stock news, ratings, SEC filings, and more. Stock Ideas and Recommendations See daily stock ideas from top analysts. Receive short-term trading ideas from MarketBeat. Identify trending stocks on social media. Advanced Stock Screeners and Research Tools Use our seven stock screeners to find suitable stocks. Stay informed with MarketBeat's real-time news. Export data to Excel for personal analysis. Sign in to your free account to enjoy these benefits In-depth profiles and analysis for 20,000 public companies. Real-time analyst ratings, insider transactions, earnings data, and more. Our daily ratings and market update email newsletter. Sign in to your free account to enjoy all that MarketBeat has to offer. Sign In Create Account Your Email Address: Email Address Required Your Password: Password Required Log In or Sign in with Facebook Sign in with Google Forgot your password? Your Email Address: Please enter your email address. Please enter a valid email address Choose a Password: Please enter your password. Your password must be at least 8 characters long and contain at least 1 number, 1 letter, and 1 special character. Create My Account (Free) or Sign in with Facebook Sign in with Google By creating a free account, you agree to our terms of service. This site is protected by reCAPTCHA and the Google Privacy Policy and Terms of Service apply.
