Tecogen Inc. (TGEN)
NYSEAMERICAN: TGEN · Real-Time Price · USD
2.920
-0.060 (-2.01%)
At close: Mar 9, 2026, 4:00 PM EDT
2.920
0.00 (0.00%)
After-hours: Mar 9, 2026, 8:00 PM EDT
Tecogen Stock Price History
Historical Data
| Date | Open | High | Low | Close | Adj. Close | Change | Volume |
|---|---|---|---|---|---|---|---|
| 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 |
| Feb 6, 2026 | 3.58 | 4.00 | 3.58 | 3.75 | 3.75 | 7.14% | 397,124 |
| Feb 5, 2026 | 3.50 | 3.70 | 3.44 | 3.50 | 3.50 | -2.78% | 261,169 |
| Feb 4, 2026 | 3.86 | 3.86 | 3.45 | 3.60 | 3.60 | -5.26% | 526,208 |
| Feb 3, 2026 | 3.80 | 3.99 | 3.60 | 3.80 | 3.80 | 0.80% | 336,919 |
| Feb 2, 2026 | 3.73 | 3.91 | 3.65 | 3.77 | 3.77 | 0.80% | 413,202 |
| Jan 30, 2026 | 4.11 | 4.21 | 3.71 | 3.74 | 3.74 | -9.66% | 419,289 |
| Jan 29, 2026 | 4.06 | 4.20 | 3.95 | 4.14 | 4.14 | 0.24% | 362,691 |
| Jan 28, 2026 | 4.26 | 4.31 | 3.97 | 4.13 | 4.13 | -2.82% | 561,197 |
| Jan 27, 2026 | 4.29 | 4.44 | 4.10 | 4.25 | 4.25 | -1.16% | 370,603 |
| Jan 26, 2026 | 4.32 | 4.52 | 4.26 | 4.30 | 4.30 | -0.92% | 636,665 |
| Jan 23, 2026 | 4.76 | 4.76 | 4.31 | 4.34 | 4.34 | -8.82% | 389,652 |
| Jan 22, 2026 | 4.67 | 4.83 | 4.54 | 4.76 | 4.76 | 3.48% | 303,204 |
| Jan 21, 2026 | 4.56 | 4.95 | 4.44 | 4.60 | 4.60 | -2.95% | 562,618 |
| Jan 20, 2026 | 4.88 | 4.99 | 4.71 | 4.74 | 4.74 | -6.88% | 355,263 |
| Jan 16, 2026 | 5.00 | 5.18 | 5.00 | 5.09 | 5.09 | 2.00% | 481,082 |
| Jan 15, 2026 | 5.00 | 5.15 | 4.91 | 4.99 | 4.99 | 0.60% | 313,841 |
| Jan 14, 2026 | 4.94 | 5.06 | 4.83 | 4.96 | 4.96 | 0.61% | 322,643 |
| Jan 13, 2026 | 4.80 | 5.07 | 4.77 | 4.93 | 4.93 | 4.01% | 365,815 |
| Jan 12, 2026 | 4.63 | 4.81 | 4.50 | 4.74 | 4.74 | -0.42% | 371,184 |
| Jan 9, 2026 | 5.05 | 5.10 | 4.59 | 4.76 | 4.76 | -5.37% | 828,930 |
| Jan 8, 2026 | 4.39 | 5.15 | 4.39 | 5.03 | 5.03 | 13.29% | 1,203,227 |
| Jan 7, 2026 | 4.46 | 4.84 | 4.27 | 4.44 | 4.44 | 0.68% | 1,442,804 |
| Jan 6, 2026 | 5.67 | 5.72 | 4.23 | 4.41 | 4.41 | -20.40% | 4,097,406 |
| Jan 5, 2026 | 5.39 | 5.79 | 5.20 | 5.54 | 5.54 | 3.75% | 614,501 |
| Jan 2, 2026 | 5.04 | 5.40 | 4.96 | 5.34 | 5.34 | 8.10% | 469,215 |
| Dec 31, 2025 | 4.90 | 5.07 | 4.88 | 4.94 | 4.94 | 0.41% | 421,789 |
| Dec 30, 2025 | 5.07 | 5.12 | 4.90 | 4.92 | 4.92 | -3.34% | 574,179 |
| Dec 29, 2025 | 5.05 | 5.20 | 5.00 | 5.09 | 5.09 | -1.74% | 375,139 |
| Dec 26, 2025 | 5.29 | 5.34 | 5.06 | 5.18 | 5.18 | -2.81% | 420,082 |
| Dec 24, 2025 | 5.22 | 5.35 | 5.13 | 5.33 | 5.33 | 1.91% | 222,046 |
| Dec 23, 2025 | 5.05 | 5.28 | 5.02 | 5.23 | 5.23 | 2.35% | 363,687 |
| Dec 22, 2025 | 5.13 | 5.33 | 4.96 | 5.11 | 5.11 | 1.39% | 637,094 |
| Dec 19, 2025 | 4.72 | 5.50 | 4.62 | 5.04 | 5.04 | 7.23% | 2,087,032 |
| Dec 18, 2025 | 4.97 | 5.27 | 4.68 | 4.70 | 4.70 | -1.67% | 1,403,220 |
| Dec 17, 2025 | 5.30 | 5.39 | 4.64 | 4.78 | 4.78 | -10.49% | 1,782,873 |
| Dec 16, 2025 | 5.83 | 5.91 | 5.25 | 5.34 | 5.34 | -8.56% | 699,173 |
| Dec 15, 2025 | 6.30 | 6.30 | 5.81 | 5.84 | 5.84 | -3.15% | 442,771 |
| Dec 12, 2025 | 6.40 | 6.70 | 5.88 | 6.03 | 6.03 | -6.80% | 534,452 |
| Dec 11, 2025 | 6.51 | 6.54 | 6.08 | 6.47 | 6.47 | -1.37% | 483,219 |
| Dec 10, 2025 | 6.72 | 6.75 | 6.42 | 6.56 | 6.56 | -3.39% | 300,094 |
| Dec 9, 2025 | 6.74 | 6.85 | 6.59 | 6.79 | 6.79 | -0.88% | 279,353 |
| Dec 8, 2025 | 6.96 | 7.06 | 6.67 | 6.85 | 6.85 | -2.28% | 287,679 |
| Dec 5, 2025 | 7.34 | 7.48 | 6.91 | 7.01 | 7.01 | -3.97% | 316,382 |
| Dec 4, 2025 | 7.01 | 7.51 | 6.85 | 7.30 | 7.30 | 3.55% | 543,222 |
| Dec 3, 2025 | 6.49 | 7.10 | 6.31 | 7.05 | 7.05 | 9.47% | 333,127 |
| Dec 2, 2025 | 6.60 | 6.79 | 6.41 | 6.44 | 6.44 | -0.92% | 270,300 |
| Dec 1, 2025 | 7.26 | 7.33 | 6.48 | 6.50 | 6.50 | -12.87% | 820,702 |
| Nov 28, 2025 | 7.40 | 7.60 | 7.21 | 7.46 | 7.46 | 6.57% | 344,868 |
| Nov 26, 2025 | 6.95 | 7.22 | 6.75 | 7.00 | 7.00 | 1.74% | 409,042 |
| Nov 25, 2025 | 6.86 | 7.00 | 6.43 | 6.88 | 6.88 | 1.18% | 275,002 |
| Nov 24, 2025 | 6.73 | 7.10 | 6.50 | 6.80 | 6.80 | 4.62% | 335,442 |
| Nov 21, 2025 | 6.34 | 7.16 | 6.05 | 6.50 | 6.50 | 4.50% | 1,088,895 |
| Nov 20, 2025 | 6.43 | 6.80 | 5.97 | 6.22 | 6.22 | 0.97% | 761,042 |
| Nov 19, 2025 | 6.41 | 6.49 | 6.05 | 6.16 | 6.16 | -2.84% | 663,428 |
| Nov 18, 2025 | 6.05 | 6.63 | 5.98 | 6.34 | 6.34 | 1.77% | 526,336 |
| Nov 17, 2025 | 6.26 | 6.61 | 6.01 | 6.23 | 6.23 | -4.30% | 655,929 |
| Nov 14, 2025 | 6.60 | 7.06 | 6.26 | 6.51 | 6.51 | -6.20% | 1,183,608 |
| Nov 13, 2025 | 7.17 | 7.69 | 6.76 | 6.94 | 6.94 | -5.96% | 1,154,606 |
| Nov 12, 2025 | 8.13 | 8.18 | 6.93 | 7.38 | 7.38 | -3.91% | 1,135,338 |
| Nov 11, 2025 | 8.02 | 8.27 | 7.59 | 7.68 | 7.68 | -5.88% | 481,793 |
| Nov 10, 2025 | 8.65 | 9.00 | 8.09 | 8.16 | 8.16 | -1.81% | 393,778 |
| Nov 7, 2025 | 8.44 | 8.44 | 7.43 | 8.31 | 8.31 | 1.84% | 615,768 |
| Nov 6, 2025 | 8.77 | 9.00 | 7.94 | 8.16 | 8.16 | -7.48% | 750,618 |
| Nov 5, 2025 | 9.03 | 9.45 | 8.72 | 8.82 | 8.82 | -5.67% | 511,419 |
| Nov 4, 2025 | 9.44 | 9.78 | 9.01 | 9.35 | 9.35 | -3.91% | 475,979 |
| Nov 3, 2025 | 9.87 | 10.47 | 9.63 | 9.73 | 9.73 | -2.51% | 527,714 |
| Oct 31, 2025 | 9.75 | 10.29 | 9.09 | 9.98 | 9.98 | 4.07% | 591,949 |
| Oct 30, 2025 | 9.33 | 11.07 | 9.21 | 9.59 | 9.59 | 1.16% | 1,807,769 |
| Oct 29, 2025 | 8.31 | 9.64 | 8.28 | 9.48 | 9.48 | 14.63% | 1,182,142 |
| Oct 28, 2025 | 8.65 | 8.74 | 8.22 | 8.27 | 8.27 | -4.50% | 301,328 |
| Oct 27, 2025 | 9.00 | 9.18 | 8.53 | 8.66 | 8.66 | -0.92% | 340,184 |
| Oct 24, 2025 | 8.75 | 9.08 | 8.61 | 8.74 | 8.74 | 3.31% | 447,150 |
| Oct 23, 2025 | 8.68 | 8.82 | 8.32 | 8.46 | 8.46 | 0.48% | 368,246 |
| Oct 22, 2025 | 8.88 | 9.00 | 8.09 | 8.42 | 8.42 | -5.29% | 843,948 |
| Oct 21, 2025 | 8.80 | 9.25 | 8.42 | 8.89 | 8.89 | -0.78% | 618,622 |
| Oct 20, 2025 | 10.00 | 10.15 | 8.79 | 8.96 | 8.96 | -4.58% | 731,238 |
| Oct 17, 2025 | 10.00 | 10.47 | 8.29 | 9.39 | 9.39 | -9.36% | 2,056,664 |
| Oct 16, 2025 | 11.90 | 11.90 | 10.35 | 10.36 | 10.36 | -14.17% | 1,349,778 |
| Oct 15, 2025 | 10.20 | 12.07 | 9.90 | 12.07 | 12.07 | 26.65% | 2,810,288 |
| Oct 14, 2025 | 8.75 | 10.20 | 8.09 | 9.53 | 9.53 | 6.84% | 1,366,476 |