NYSE:TGEN | Stock Price History | 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.

Historical Stock Price

DateSplit-adjusted closeCumulative dividend-reinvested closeReported volumeOpen priceExchange Volume
2026-09-04$3.074,378
2026-09-03$3.0312,625
2026-09-02$3.011,651
2026-09-01$2.9428,349
2026-08-31$3.136,055
2026-08-28$3.124,475
2026-08-27$3.17$3.17264,700$3.1617,795
2026-08-26$3.13$3.13100,100$3.225,767
2026-08-25$3.18$3.18182,400$3.1112,163
2026-08-24$3.11$3.11321,700$3.2212,503
2026-08-21$3.42$3.42218,000$3.3219,425
2026-08-20$3.26$3.26183,800$3.279,387
2026-08-19$3.36$3.36173,400$3.526,883
2026-08-18$3.50$3.50228,200$3.4811,603
2026-08-17$3.57$3.57207,400$3.789,424
2026-08-14$3.65$3.65356,200$4.0914,370
2026-08-13$4.19$4.19335,400$3.7321,119
2026-08-12$4.01$4.01182,100$4.0812,798
2026-08-11$4.06$4.0672,900$3.896,124
2026-08-10$3.88$3.8894,000$3.944,143
2026-08-07$3.89$3.89109,300$3.859,570
2026-08-06$3.73$3.73164,600$3.7213,876
2026-08-05$3.76$3.76155,800$3.7810,448
2026-08-04$3.74$3.74179,400$3.8317,459
2026-08-03$3.65$3.65195,700$3.5411,483
2026-07-31$3.32$3.3274,400$3.307,812
2026-07-30$3.20$3.20182,200$3.1120,154
2026-07-29$3.00$3.00528,500$3.0948,349
2026-07-28$3.10$3.10397,100$3.3622,232
2026-07-27$3.34$3.34295,800$3.3916,724
2026-07-24$3.22$3.22363,300$3.3033,249
2026-07-23$3.40$3.40275,700$3.5627,757
2026-07-22$3.54$3.54226,600$3.5816,587
2026-07-21$3.59$3.59323,300$3.4215,665
2026-07-20$3.45$3.45143,500$3.579,817
2026-07-17$3.55$3.55373,300
2026-07-16$3.73$3.73247,000
2026-07-15$3.95$3.95189,400
2026-07-14$4.01$4.01207,500
2026-07-13$3.98$3.98172,500
2026-07-10$4.12$4.1284,100
2026-07-09$4.47$4.47297,800
2026-07-08$4.07$4.07214,100
2026-07-07$4.00$4.00329,800
2026-07-06$4.36$4.36367,300
2026-07-02$4.52$4.52451,500
2026-07-01$4.93$4.93199,200
2026-06-30$5.22$5.22137,700
2026-06-29$5.23$5.23151,700
2026-06-26$5.17$5.17241,500
2026-06-25$5.20$5.20339,200
2026-06-24$5.38$5.38259,100
2026-06-23$5.72$5.72265,700
2026-06-22$6.05$6.05189,200
2026-06-18$6.03$6.03168,500
2026-06-17$5.78$5.78198,800
2026-06-16$5.67$5.67163,300
2026-06-15$5.68$5.68215,600
2026-06-12$5.73$5.73195,500
2026-06-11$5.71$5.71249,100
2026-06-10$5.32$5.32242,200
2026-06-09$5.67$5.67611,400
2026-06-08$6.09$6.09343,500
2026-06-05$5.74$5.74550,000
2026-06-04$6.90$6.90399,200
2026-06-03$6.82$6.82443,900
2026-06-02$6.54$6.54413,300
2026-06-01$6.86$6.86516,500
2026-05-29$6.21$6.21262,500
2026-05-28$6.37$6.37326,100
2026-05-27$6.57$6.57892,300
2026-05-26$6.05$6.05535,700
2026-05-22$5.74$5.74391,500
2026-05-21$5.52$5.52185,700
2026-05-20$5.30$5.30442,700
2026-05-19$5.36$5.36554,000
2026-05-18$6.35$6.35870,100
2026-05-15$6.52$6.521,108,800
2026-05-14$6.22$6.221,787,500
2026-05-13$5.07$5.071,934,700
2026-05-12$4.23$4.23468,000
2026-05-11$4.37$4.37583,200
2026-05-08$4.63$4.63463,000
2026-05-07$4.82$4.82366,600
2026-05-06$5.35$5.35418,700
2026-05-05$4.94$4.94270,400
2026-05-04$4.92$4.92379,900
2026-05-01$4.95$4.95529,200
2026-04-30$4.78$4.781,162,100
2026-04-29$4.04$4.04210,300
2026-04-28$4.20$4.20289,100
2026-04-27$4.24$4.24144,300
2026-04-24$4.29$4.29179,800
2026-04-23$4.17$4.17363,700
2026-04-22$4.32$4.32516,100
2026-04-21$4.45$4.45549,500
2026-04-20$4.87$4.871,397,500
2026-04-17$4.30$4.301,200,900
2026-04-16$3.87$3.87454,200
2026-04-15$3.92$3.92631,100