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 — 2015

DateSplit-adjusted closeCumulative dividend-reinvested closeReported volumeOpen priceExchange Volume
2015-12-31$3.50$3.5033,300
2015-12-30$3.30$3.304,200
2015-12-29$3.00$3.009,300
2015-12-28$3.06$3.0623,100
2015-12-24$3.05$3.050
2015-12-23$3.05$3.0511,000
2015-12-22$3.01$3.014,900
2015-12-21$3.09$3.09800
2015-12-18$3.41$3.4188,000
2015-12-17$3.25$3.2525,100
2015-12-16$2.96$2.965,600
2015-12-15$2.82$2.8213,000
2015-12-14$2.95$2.9541,600
2015-12-11$3.30$3.307,800
2015-12-10$3.35$3.354,300
2015-12-09$3.26$3.261,100
2015-12-08$3.26$3.269,600
2015-12-07$3.38$3.3841,600
2015-12-04$3.68$3.684,400
2015-12-03$3.92$3.921,900
2015-12-02$3.85$3.851,600
2015-12-01$3.80$3.800
2015-11-30$3.80$3.804,700
2015-11-27$3.81$3.810
2015-11-25$3.81$3.812,700
2015-11-24$3.81$3.817,700
2015-11-23$3.98$3.981,900
2015-11-20$4.04$4.040
2015-11-19$4.04$4.04200
2015-11-18$3.86$3.860
2015-11-17$3.86$3.860
2015-11-16$3.86$3.860
2015-11-13$3.86$3.862,100
2015-11-12$3.87$3.871,500
2015-11-11$3.71$3.713,400
2015-11-10$4.01$4.015,100
2015-11-09$3.51$3.518,000
2015-11-06$3.82$3.82600
2015-11-05$3.50$3.503,000
2015-11-04$3.60$3.6011,200
2015-11-03$3.76$3.766,000
2015-11-02$3.94$3.944,800
2015-10-30$4.08$4.083,000
2015-10-29$4.07$4.07700
2015-10-28$4.06$4.068,100
2015-10-27$3.76$3.760
2015-10-26$3.76$3.762,200
2015-10-23$3.72$3.72200
2015-10-22$3.72$3.72800
2015-10-21$3.86$3.86700
2015-10-20$4.04$4.048,200
2015-10-19$3.96$3.964,300
2015-10-16$3.99$3.992,600
2015-10-15$3.69$3.693,300
2015-10-14$3.31$3.314,100
2015-10-13$3.32$3.325,100
2015-10-12$3.38$3.382,700
2015-10-09$3.50$3.50300
2015-10-08$3.35$3.35300
2015-10-07$3.31$3.311,600
2015-10-06$3.25$3.250
2015-10-05$3.25$3.253,500
2015-10-02$3.25$3.25700
2015-10-01$3.20$3.205,300
2015-09-30$3.45$3.457,000
2015-09-29$3.50$3.5014,500
2015-09-28$3.55$3.5519,100
2015-09-25$3.56$3.563,800
2015-09-24$3.63$3.631,200
2015-09-23$3.68$3.68300
2015-09-22$3.70$3.701,600
2015-09-21$3.65$3.654,200
2015-09-18$3.50$3.508,100
2015-09-17$3.75$3.752,100
2015-09-16$3.74$3.745,300
2015-09-15$3.60$3.604,300
2015-09-14$3.72$3.722,300
2015-09-11$3.75$3.751,900
2015-09-10$3.90$3.907,900
2015-09-09$4.19$4.191,500
2015-09-08$4.05$4.0524,700
2015-09-04$4.11$4.113,800
2015-09-03$3.90$3.902,100
2015-09-02$4.05$4.051,400
2015-09-01$3.95$3.954,800
2015-08-31$4.00$4.001,500
2015-08-28$3.94$3.94300
2015-08-27$3.50$3.50100
2015-08-26$3.39$3.390
2015-08-25$3.39$3.395,300
2015-08-24$3.95$3.9512,400
2015-08-21$3.95$3.95100
2015-08-20$4.05$4.05100
2015-08-19$4.05$4.051,100
2015-08-18$4.05$4.050
2015-08-17$4.05$4.051,500
2015-08-14$3.90$3.906,600
2015-08-13$4.00$4.00200
2015-08-12$4.00$4.003,500
2015-08-11$4.06$4.06300
2015-08-10$4.05$4.05500
2015-08-07$4.15$4.150
2015-08-06$4.15$4.158,700
2015-08-05$4.09$4.09500
2015-08-04$4.06$4.060
2015-08-03$4.06$4.06100
2015-07-31$4.05$4.05200
2015-07-30$4.05$4.050
2015-07-29$4.05$4.054,200
2015-07-28$4.10$4.10500
2015-07-27$4.14$4.140
2015-07-24$4.14$4.140
2015-07-23$4.14$4.14800
2015-07-22$4.20$4.20300
2015-07-21$4.20$4.20200
2015-07-20$4.23$4.234,200
2015-07-17$4.24$4.249,400
2015-07-16$4.05$4.055,800
2015-07-15$3.96$3.96600
2015-07-14$4.01$4.01200
2015-07-13$4.23$4.230
2015-07-10$4.23$4.232,200
2015-07-09$4.02$4.020
2015-07-08$4.02$4.02900
2015-07-07$4.21$4.218,400
2015-07-06$4.02$4.021,500
2015-07-02$4.07$4.072,000
2015-07-01$4.08$4.08300
2015-06-30$4.10$4.10300
2015-06-29$4.10$4.10700
2015-06-26$4.22$4.222,900
2015-06-25$4.20$4.203,100
2015-06-24$4.23$4.238,900
2015-06-23$4.07$4.072,300
2015-06-22$4.15$4.15700
2015-06-19$4.08$4.083,400
2015-06-18$4.16$4.162,100
2015-06-17$4.25$4.253,900
2015-06-16$4.20$4.203,100
2015-06-15$4.15$4.157,200
2015-06-12$4.07$4.073,000
2015-06-11$4.10$4.106,800
2015-06-10$4.11$4.1110,400
2015-06-09$4.10$4.106,600
2015-06-08$4.15$4.153,600
2015-06-05$4.20$4.203,700
2015-06-04$4.21$4.211,700
2015-06-03$4.13$4.1311,400
2015-06-02$4.12$4.1217,700
2015-06-01$4.30$4.3016,200
2015-05-29$4.29$4.292,400
2015-05-28$4.30$4.301,700
2015-05-27$4.41$4.412,500
2015-05-26$4.30$4.30200
2015-05-22$4.32$4.322,400
2015-05-21$4.32$4.32100
2015-05-20$4.32$4.32600
2015-05-19$4.30$4.30900
2015-05-18$4.19$4.193,200
2015-05-15$4.30$4.303,200
2015-05-14$4.11$4.1135,000
2015-05-13$4.48$4.483,300
2015-05-12$4.32$4.322,600
2015-05-11$4.48$4.483,700
2015-05-08$4.35$4.354,800
2015-05-07$4.38$4.3833,600
2015-05-06$4.72$4.722,200
2015-05-05$4.73$4.732,600
2015-05-04$4.74$4.744,800
2015-05-01$4.71$4.7111,400
2015-04-30$4.74$4.7434,700
2015-04-29$4.79$4.798,500
2015-04-28$4.66$4.6610,800
2015-04-27$4.90$4.902,700
2015-04-24$5.00$5.00600
2015-04-23$5.05$5.05600
2015-04-22$4.95$4.95500
2015-04-21$5.00$5.004,500
2015-04-20$4.98$4.981,200
2015-04-17$4.96$4.96600
2015-04-16$5.00$5.002,200
2015-04-15$5.09$5.097,600
2015-04-14$4.93$4.932,500
2015-04-13$5.16$5.16300
2015-04-10$5.10$5.102,200
2015-04-09$5.04$5.0410,000
2015-04-08$5.08$5.0810,300
2015-04-07$5.17$5.174,600
2015-04-06$5.05$5.055,400
2015-04-02$5.17$5.172,300
2015-04-01$5.19$5.196,000
2015-03-31$5.07$5.072,500
2015-03-30$5.27$5.274,700
2015-03-27$5.12$5.124,700
2015-03-26$5.32$5.323,400
2015-03-25$5.34$5.3414,100
2015-03-24$5.40$5.405,800
2015-03-23$5.39$5.393,900
2015-03-20$5.36$5.362,900
2015-03-19$5.38$5.3817,100
2015-03-18$5.19$5.1915,100
2015-03-17$5.24$5.2437,600
2015-03-16$4.71$4.718,600
2015-03-13$4.91$4.9111,400
2015-03-12$5.05$5.05700
2015-03-11$4.99$4.994,200
2015-03-10$5.15$5.1518,000
2015-03-09$5.32$5.323,000
2015-03-06$5.09$5.091,800
2015-03-05$5.30$5.303,300
2015-03-04$5.39$5.395,400
2015-03-03$5.40$5.400
2015-03-02$5.40$5.4014,200
2015-02-27$5.49$5.4922,900
2015-02-26$5.29$5.298,000
2015-02-25$5.25$5.251,500
2015-02-24$5.29$5.2910,600
2015-02-23$5.23$5.234,700
2015-02-20$5.21$5.212,500
2015-02-19$4.99$4.993,500
2015-02-18$5.21$5.213,300
2015-02-17$5.21$5.217,700
2015-02-13$5.37$5.3711,200
2015-02-12$5.26$5.2628,300
2015-02-11$5.59$5.5922,900
2015-02-10$5.22$5.228,200
2015-02-09$5.16$5.1621,500
2015-02-06$5.10$5.106,200
2015-02-05$5.11$5.1118,700
2015-02-04$4.82$4.82500
2015-02-03$4.76$4.762,400
2015-02-02$4.74$4.740
2015-01-30$4.74$4.7410,000
2015-01-29$4.82$4.8239,000
2015-01-28$4.74$4.745,600
2015-01-27$4.70$4.70300
2015-01-26$4.71$4.715,200
2015-01-23$4.87$4.878,500
2015-01-22$4.62$4.621,100
2015-01-21$4.76$4.761,800
2015-01-20$4.80$4.8017,800
2015-01-16$4.74$4.7430,900
2015-01-15$4.75$4.7520,200
2015-01-14$4.67$4.6719,500
2015-01-13$4.81$4.813,800
2015-01-12$4.77$4.774,900
2015-01-09$4.69$4.694,500
2015-01-08$4.87$4.874,900
2015-01-07$4.69$4.699,200
2015-01-06$4.77$4.775,500
2015-01-05$4.90$4.9014,500
2015-01-02$5.01$5.0110,200