Tecogen Inc. (TGEN)
NYSEAMERICAN: TGEN · Real-Time Price · USD
4.450
-0.420 (-8.62%)
At close: Apr 21, 2026, 4:00 PM EDT
4.666
+0.216 (4.85%)
Pre-market: Apr 22, 2026, 6:15 AM EDT
Tecogen Stock Price History
Historical Data
| Date | Open | High | Low | Close | Adj. Close | Change | Volume |
|---|---|---|---|---|---|---|---|
| Apr 21, 2026 | 4.94 | 4.94 | 4.36 | 4.45 | 4.45 | -8.62% | 548,035 |
| Apr 20, 2026 | 4.27 | 5.00 | 4.12 | 4.87 | 4.87 | 13.26% | 1,395,060 |
| Apr 17, 2026 | 3.95 | 4.47 | 3.86 | 4.30 | 4.30 | 11.11% | 1,198,938 |
| Apr 16, 2026 | 3.92 | 3.95 | 3.61 | 3.87 | 3.87 | -1.28% | 454,202 |
| Apr 15, 2026 | 3.90 | 4.12 | 3.71 | 3.92 | 3.92 | 3.43% | 629,349 |
| Apr 14, 2026 | 3.75 | 3.96 | 3.50 | 3.79 | 3.79 | 4.41% | 1,006,733 |
| Apr 13, 2026 | 2.87 | 3.80 | 2.87 | 3.63 | 3.63 | 27.37% | 1,311,993 |
| Apr 10, 2026 | 3.09 | 3.21 | 2.77 | 2.85 | 2.85 | -7.77% | 267,004 |
| Apr 9, 2026 | 2.67 | 3.23 | 2.67 | 3.09 | 3.09 | 12.77% | 633,811 |
| Apr 8, 2026 | 2.80 | 2.87 | 2.66 | 2.74 | 2.74 | 4.58% | 255,350 |
| Apr 7, 2026 | 2.65 | 2.65 | 2.47 | 2.62 | 2.62 | -1.50% | 190,475 |
| Apr 6, 2026 | 2.96 | 3.03 | 2.65 | 2.66 | 2.66 | -8.90% | 352,508 |
| Apr 2, 2026 | 2.85 | 3.03 | 2.75 | 2.92 | 2.92 | 5.04% | 307,154 |
| Apr 1, 2026 | 2.62 | 2.82 | 2.62 | 2.78 | 2.78 | 8.59% | 264,952 |
| Mar 31, 2026 | 2.53 | 2.67 | 2.49 | 2.56 | 2.56 | 4.07% | 224,823 |
| Mar 30, 2026 | 2.67 | 2.90 | 2.41 | 2.46 | 2.46 | -4.28% | 257,712 |
| Mar 27, 2026 | 2.61 | 2.67 | 2.45 | 2.57 | 2.57 | -1.91% | 398,810 |
| Mar 26, 2026 | 2.84 | 2.94 | 2.62 | 2.62 | 2.62 | -9.34% | 345,890 |
| Mar 25, 2026 | 3.15 | 3.15 | 2.60 | 2.89 | 2.89 | 5.09% | 619,741 |
| Mar 24, 2026 | 2.36 | 2.87 | 2.36 | 2.75 | 2.75 | 16.53% | 775,732 |
| Mar 23, 2026 | 2.24 | 2.45 | 2.19 | 2.36 | 2.36 | 5.83% | 480,861 |
| Mar 20, 2026 | 2.23 | 2.37 | 2.18 | 2.23 | 2.23 | 2.29% | 442,993 |
| Mar 19, 2026 | 2.09 | 2.25 | 2.06 | 2.18 | 2.18 | 9.00% | 547,527 |
| Mar 18, 2026 | 2.83 | 2.83 | 1.94 | 2.00 | 2.00 | -29.58% | 2,470,468 |
| Mar 17, 2026 | 2.76 | 2.97 | 2.74 | 2.84 | 2.84 | 3.27% | 360,466 |
| Mar 16, 2026 | 2.79 | 2.93 | 2.69 | 2.75 | 2.75 | -0.36% | 146,110 |
| Mar 13, 2026 | 2.81 | 2.95 | 2.63 | 2.76 | 2.76 | 1.85% | 330,123 |
| Mar 12, 2026 | 2.74 | 2.79 | 2.62 | 2.71 | 2.71 | -4.24% | 417,381 |
| Mar 11, 2026 | 2.80 | 2.88 | 2.66 | 2.83 | 2.83 | 0.71% | 275,422 |
| Mar 10, 2026 | 2.89 | 2.99 | 2.78 | 2.81 | 2.81 | -3.77% | 206,735 |
| Mar 9, 2026 | 2.82 | 2.95 | 2.82 | 2.92 | 2.92 | -2.01% | 206,338 |
| Mar 6, 2026 | 3.10 | 3.18 | 2.71 | 2.98 | 2.98 | -6.88% | 753,069 |
| Mar 5, 2026 | 3.26 | 3.34 | 3.06 | 3.20 | 3.20 | -3.03% | 193,538 |
| Mar 4, 2026 | 3.30 | 3.50 | 3.25 | 3.30 | 3.30 | 2.17% | 234,894 |
| Mar 3, 2026 | 3.36 | 3.37 | 3.15 | 3.23 | 3.23 | -6.38% | 291,591 |
| Mar 2, 2026 | 3.37 | 3.59 | 3.37 | 3.45 | 3.45 | -0.58% | 177,586 |
| Feb 27, 2026 | 3.78 | 3.78 | 3.37 | 3.47 | 3.47 | -10.34% | 379,529 |
| Feb 26, 2026 | 3.78 | 3.92 | 3.68 | 3.87 | 3.87 | 2.93% | 147,137 |
| Feb 25, 2026 | 3.72 | 3.86 | 3.67 | 3.76 | 3.76 | 2.17% | 163,519 |
| Feb 24, 2026 | 3.47 | 3.75 | 3.38 | 3.68 | 3.68 | 5.75% | 119,244 |
| Feb 23, 2026 | 3.50 | 3.58 | 3.43 | 3.48 | 3.48 | -1.69% | 170,335 |
| Feb 20, 2026 | 3.65 | 3.76 | 3.53 | 3.54 | 3.54 | -3.80% | 157,363 |
| Feb 19, 2026 | 3.49 | 3.68 | 3.37 | 3.68 | 3.68 | 4.55% | 170,574 |
| Feb 18, 2026 | 3.83 | 3.99 | 3.47 | 3.52 | 3.52 | -8.57% | 261,396 |
| Feb 17, 2026 | 3.85 | 3.87 | 3.62 | 3.85 | 3.85 | 1.05% | 270,301 |
| Feb 13, 2026 | 3.81 | 3.91 | 3.71 | 3.81 | 3.81 | 1.06% | 285,909 |
| Feb 12, 2026 | 3.93 | 4.00 | 3.71 | 3.77 | 3.77 | -3.33% | 122,480 |
| Feb 11, 2026 | 4.02 | 4.22 | 3.82 | 3.90 | 3.90 | 2.90% | 330,209 |
| Feb 10, 2026 | 3.87 | 3.92 | 3.69 | 3.79 | 3.79 | -2.57% | 149,538 |
| Feb 9, 2026 | 3.78 | 3.90 | 3.58 | 3.89 | 3.89 | 3.73% | 282,013 |