Tecogen Inc. (TGEN) Stock Chart
TGEN price chart
Daily prices adjusted for splits and dividends. 1D and 5D show delayed intraday prices. Markers: E earnings, D dividend, S split.
Technical snapshot
Key levels & statistics
TGEN performance vs the market
Total return, dividends reinvestedTGEN monthly returns
TGEN historical prices
TGEN dividends & splits
About the TGEN chart
Tecogen (TGEN) closed at $2.09 on October 16, 2026, down 57.7% so far this year. The stock is trading 47.1% below its 200-day moving average of $3.95, which technical analysts usually read as a long-term downtrend. Over the past year TGEN returned −79.8% including dividends, behind the S&P 500 (+16.8%).
This page charts the full trading history of Tecogen Inc. stock. Daily prices come from EODHD and are adjusted for stock splits and dividends, so returns over long periods are comparable. For the latest quote, company profile, earnings and news, see the TGEN stock overview.
TGEN chart FAQ
What is Tecogen's all-time high stock price?
The highest closing price for TGEN was $20.80 on May 22, 2014 (adjusted for stock splits). As of the October 16, 2026 close it traded 90.0% below that level.
What is the 52-week range of TGEN stock?
Over the 52 weeks to October 16, 2026, TGEN traded between an intraday low of $1.94 on March 18, 2026 and an intraday high of $11.07 on October 30, 2025.
Is TGEN above its 200-day moving average?
No. On October 16, 2026 TGEN closed at $2.09, 47.1% below its 200-day simple moving average of $3.95. The 50-day average was $3.07.
How has TGEN stock performed compared with the S&P 500?
Including reinvested dividends, TGEN returned −79.8% over the past year, compared with +16.8% for the S&P 500 (SPY). Over five years the figures were +18.7% and +83.0%.
Does Tecogen pay a dividend?
Tecogen has not paid a dividend in the past 12 months.
How do I read the TGEN chart?
Pick a time range above the chart and choose candlesticks, a line or an area chart. Moving averages, Bollinger Bands, volume, RSI and MACD can be switched on with the indicator buttons, and "Compare" plots TGEN against the S&P 500, its sector or a competitor as a percentage change. Chart prices are adjusted for splits and dividends.