NYSE:TGEN | Historical Stock Price | TECOGEN INC.

Complete retained daily price history on its own workbook tab. Split-adjusted close keeps every historical share price on one comparable split basis. Cumulative dividend-reinvested close is the daily close of a rebased total-return index: it starts with one share at the earliest retained close, reinvests every distribution, and normalizes every forward and reverse split exactly once. Admitted exchange opening prices remain a distinct current-session series.

Available history
2014-05-20 to 2026-09-04
Data captured

Stock Price Chart

Blue: Split-adjusted close · Orange: Cumulative dividend-reinvested close

$0.60$1.06$1.87$3.30$5.83$10.292014-05-202026-08-27

Logarithmic scale. Both lines share the same starting value for the selected range.

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Historical Stock Price — 2021

DateSplit-adjusted closeCumulative dividend-reinvested closeReported volumeOpen priceExchange Volume
2021-12-31$1.20$1.2011,100——
2021-12-30$1.27$1.2715,000——
2021-12-29$1.20$1.209,400——
2021-12-28$1.16$1.1663,100——
2021-12-27$1.12$1.126,000——
2021-12-23$1.16$1.1616,100——
2021-12-22$1.11$1.119,800——
2021-12-21$1.15$1.158,500——
2021-12-20$1.14$1.14100——
2021-12-17$1.15$1.151,700——
2021-12-16$1.10$1.108,100——
2021-12-15$1.19$1.1963,000——
2021-12-14$1.19$1.1926,400——
2021-12-13$1.32$1.3211,300——
2021-12-10$1.41$1.417,300——
2021-12-09$1.43$1.4313,800——
2021-12-08$1.45$1.45800——
2021-12-07$1.45$1.452,400——
2021-12-06$1.51$1.51200——
2021-12-03$1.37$1.374,100——
2021-12-02$1.57$1.570——
2021-12-01$1.57$1.5717,300——
2021-11-30$1.59$1.59600——
2021-11-29$1.63$1.6318,400——
2021-11-26$1.41$1.410——
2021-11-24$1.41$1.4113,900——
2021-11-23$1.28$1.2870,400——
2021-11-22$1.36$1.3623,800——
2021-11-19$1.49$1.499,400——
2021-11-18$1.52$1.5222,900——
2021-11-17$1.59$1.593,900——
2021-11-16$1.60$1.60900——
2021-11-15$1.59$1.5953,900——
2021-11-12$1.67$1.678,900——
2021-11-11$1.71$1.7112,400——
2021-11-10$1.78$1.783,600——
2021-11-09$1.76$1.76400——
2021-11-08$1.77$1.777,000——
2021-11-05$1.74$1.741,500——
2021-11-04$1.76$1.766,200——
2021-11-03$1.75$1.750——
2021-11-02$1.75$1.752,000——
2021-11-01$1.79$1.796,900——
2021-10-29$1.70$1.705,000——
2021-10-28$1.70$1.7013,300——
2021-10-27$1.74$1.744,700——
2021-10-26$1.74$1.7410,700——
2021-10-25$1.75$1.754,700——
2021-10-22$1.79$1.79700——
2021-10-21$1.70$1.704,600——
2021-10-20$1.77$1.776,300——
2021-10-19$1.75$1.75200——
2021-10-18$1.76$1.768,400——
2021-10-15$1.76$1.76300——
2021-10-14$1.74$1.744,800——
2021-10-13$1.75$1.7510,400——
2021-10-12$1.78$1.780——
2021-10-11$1.78$1.781,200——
2021-10-08$1.80$1.800——
2021-10-07$1.80$1.805,400——
2021-10-06$1.80$1.801,600——
2021-10-05$1.89$1.891,600——
2021-10-04$1.75$1.7512,500——
2021-10-01$1.81$1.816,900——
2021-09-30$1.81$1.819,400——
2021-09-29$1.83$1.83600——
2021-09-28$1.78$1.785,900——
2021-09-27$1.85$1.859,100——
2021-09-24$1.81$1.812,500——
2021-09-23$1.80$1.801,900——
2021-09-22$1.79$1.79700——
2021-09-21$1.80$1.792,000——
2021-09-20$1.80$1.79700——
2021-09-17$1.81$1.811,900——
2021-09-16$1.78$1.784,600——
2021-09-15$1.86$1.861,200——
2021-09-14$1.91$1.91100——
2021-09-13$1.85$1.851,900——
2021-09-10$1.86$1.86900——
2021-09-09$1.91$1.910——
2021-09-08$1.91$1.911,200——
2021-09-07$1.76$1.7611,600——
2021-09-03$1.87$1.8711,500——
2021-09-02$1.85$1.856,000——
2021-09-01$1.86$1.864,200——
2021-08-31$1.79$1.79300——
2021-08-30$1.80$1.801,200——
2021-08-27$1.83$1.8320,000——
2021-08-26$1.81$1.814,800——
2021-08-25$1.85$1.851,000——
2021-08-24$1.97$1.9716,000——
2021-08-23$1.98$1.982,700——
2021-08-20$1.85$1.855,000——
2021-08-19$1.96$1.964,800——
2021-08-18$1.92$1.92600——
2021-08-17$2.00$2.0015,300——
2021-08-16$1.80$1.802,100——
2021-08-13$1.78$1.7819,600——
2021-08-12$1.80$1.8016,700——
2021-08-11$1.83$1.8311,200——
2021-08-10$1.88$1.881,200——
2021-08-09$1.80$1.8015,000——
2021-08-06$1.87$1.873,100——
2021-08-05$1.89$1.892,200——
2021-08-04$1.90$1.9010,600——
2021-08-03$1.94$1.9424,300——
2021-08-02$1.95$1.9520,500——
2021-07-30$2.05$2.056,400——
2021-07-29$2.20$2.201,700——
2021-07-28$2.11$2.1114,000——
2021-07-27$2.19$2.1957,700——
2021-07-26$2.11$2.1121,200——
2021-07-23$2.00$2.002,300——
2021-07-22$1.93$1.936,000——
2021-07-21$1.94$1.94500——
2021-07-20$1.96$1.9626,900——
2021-07-19$1.82$1.8233,500——
2021-07-16$1.84$1.841,300——
2021-07-15$1.87$1.8712,200——
2021-07-14$1.92$1.92100——
2021-07-13$1.89$1.8912,600——
2021-07-12$1.91$1.912,900——
2021-07-09$1.83$1.834,800——
2021-07-08$1.85$1.853,700——
2021-07-07$1.87$1.877,900——
2021-07-06$1.88$1.88300——
2021-07-02$1.88$1.880——
2021-07-01$1.88$1.883,700——
2021-06-30$1.87$1.87200——
2021-06-29$1.87$1.874,900——
2021-06-28$1.99$1.99500——
2021-06-25$1.87$1.8763,200——
2021-06-24$1.83$1.836,800——
2021-06-23$1.95$1.9512,400——
2021-06-22$1.95$1.9546,200——
2021-06-21$1.75$1.753,700——
2021-06-18$1.76$1.76200——
2021-06-17$1.80$1.801,900——
2021-06-16$1.74$1.749,600——
2021-06-15$1.82$1.821,800——
2021-06-14$1.72$1.72200——
2021-06-11$1.71$1.71500——
2021-06-10$1.70$1.709,700——
2021-06-09$1.84$1.8417,200——
2021-06-08$1.75$1.754,500——
2021-06-07$1.75$1.754,200——
2021-06-04$1.70$1.705,000——
2021-06-03$1.70$1.703,100——
2021-06-02$1.70$1.7010,800——
2021-06-01$1.60$1.602,300——
2021-05-28$1.65$1.6510,500——
2021-05-27$1.64$1.640——
2021-05-26$1.64$1.647,000——
2021-05-25$1.62$1.624,700——
2021-05-24$1.62$1.62600——
2021-05-21$1.60$1.6018,000——
2021-05-20$1.67$1.67400——
2021-05-19$1.67$1.675,100——
2021-05-18$1.60$1.601,400——
2021-05-17$1.70$1.7011,200——
2021-05-14$1.62$1.6234,400——
2021-05-13$1.58$1.5865,800——
2021-05-12$1.66$1.661,600——
2021-05-11$1.70$1.70500——
2021-05-10$1.74$1.746,600——
2021-05-07$1.72$1.72800——
2021-05-06$1.70$1.703,300——
2021-05-05$1.75$1.75800——
2021-05-04$1.66$1.66800——
2021-05-03$1.75$1.7538,000——
2021-04-30$1.65$1.6522,600——
2021-04-29$1.70$1.708,800——
2021-04-28$1.80$1.803,800——
2021-04-27$1.75$1.7511,500——
2021-04-26$1.80$1.802,200——
2021-04-23$1.75$1.7554,400——
2021-04-22$1.70$1.7011,800——
2021-04-21$1.66$1.6625,200——
2021-04-20$1.62$1.625,400——
2021-04-19$1.62$1.6210,400——
2021-04-16$1.75$1.755,600——
2021-04-15$1.62$1.6212,100——
2021-04-14$1.63$1.6332,000——
2021-04-13$1.75$1.7563,100——
2021-04-12$1.75$1.7546,200——
2021-04-09$1.76$1.763,000——
2021-04-08$1.75$1.75700——
2021-04-07$1.72$1.7210,400——
2021-04-06$1.76$1.766,600——
2021-04-05$1.74$1.748,000——
2021-04-01$1.75$1.7513,100——
2021-03-31$1.70$1.7044,800——
2021-03-30$1.72$1.7221,900——
2021-03-29$1.79$1.79900——
2021-03-26$1.74$1.7411,600——
2021-03-25$1.75$1.7514,100——
2021-03-24$1.85$1.8512,600——
2021-03-23$1.80$1.8013,000——
2021-03-22$1.72$1.721,900——
2021-03-19$1.72$1.7215,400——
2021-03-18$1.85$1.8518,300——
2021-03-17$1.82$1.829,100——
2021-03-16$1.80$1.8015,200——
2021-03-15$1.85$1.8528,000——
2021-03-12$1.75$1.7524,200——
2021-03-11$1.84$1.84294,900——
2021-03-10$2.34$2.341,900——
2021-03-09$2.20$2.209,000——
2021-03-08$2.38$2.3810,800——
2021-03-05$2.11$2.1131,200——
2021-03-04$2.30$2.3051,900——
2021-03-03$2.20$2.2075,400——
2021-03-02$2.20$2.209,400——
2021-03-01$2.00$2.0018,200——
2021-02-26$2.00$2.005,700——
2021-02-25$2.04$2.0410,000——
2021-02-24$1.92$1.9221,500——
2021-02-23$1.85$1.8536,100——
2021-02-22$1.94$1.9425,700——
2021-02-19$1.90$1.9036,200——
2021-02-18$1.75$1.7517,500——
2021-02-17$1.76$1.7617,000——
2021-02-16$1.80$1.8037,700——
2021-02-12$2.02$2.0225,800——
2021-02-11$2.10$2.1076,800——
2021-02-10$1.88$1.8821,900——
2021-02-09$1.95$1.9574,900——
2021-02-08$1.75$1.7525,400——
2021-02-05$1.64$1.647,500——
2021-02-04$1.55$1.5520,400——
2021-02-03$1.68$1.6890,700——
2021-02-02$1.55$1.5523,900——
2021-02-01$1.55$1.552,400——
2021-01-29$1.42$1.4242,900——
2021-01-28$1.53$1.5327,000——
2021-01-27$1.50$1.5018,500——
2021-01-26$1.65$1.6584,900——
2021-01-25$1.47$1.4750,300——
2021-01-22$1.66$1.6650,100——
2021-01-21$1.62$1.6261,500——
2021-01-20$1.73$1.7387,600——
2021-01-19$1.81$1.8134,200——
2021-01-15$1.61$1.61114,800——
2021-01-14$1.80$1.8019,700——
2021-01-13$1.76$1.7624,100——
2021-01-12$1.58$1.5814,900——
2021-01-11$1.54$1.543,800——
2021-01-08$1.57$1.5718,100——
2021-01-07$1.57$1.5728,300——
2021-01-06$1.55$1.5546,000——
2021-01-05$1.42$1.4251,000——
2021-01-04$1.25$1.2562,900——