Tecogen Inc (TGEN)

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Tecogen Inc Stock (TGEN) Price History

The historical daily chart and data for Tecogen Inc stock (TGEN), show that the latest closing stock price as of October 23, 2026, is $2.09.

Tecogen Inc all-time high stock price is $12.07, occurred on October 15, 2025.
The lowest Tecogen Inc stock price recorded was $1.94 on March 18, 2026. Since then, Tecogen Inc's stock price has risen over 7.73% to $2.09 now.
The 52-week high stock price for TGEN is $11.07, representing a 429.67% increase from the current share price, occurred on October 30, 2025.
The 52-week low stock price for TGEN is $1.94, indicating a -7.18% decrease from the current share price, occurred on March 18, 2026.
The closing price of Tecogen Inc (TGEN) stock in the beginning of 2025 was $3.23. The stock closed the year at $4.94, a gain of over 52.94% for the year.

The table below shows more information about TGEN historical price data:

Daily

Weekly

Monthly

30D

60D

YTD

Date	High	Low	High - Low	Volume	% Change
Oct 23, 2026	$2.54	$2.01	$0.53	921,274.0	+0.97%
Oct 22, 2026	$2.14	$2.00	$0.14	115,405.0	-4.61%
Oct 21, 2026	$2.28	$2.11	$0.1699	107,556.0	+1.88%
Oct 20, 2026	$2.20	$2.04	$0.16	57,303.0	+0.47%
Oct 19, 2026	$2.15	$1.95	$0.20	186,499.0	+1.44%
Oct 16, 2026	$2.29	$2.05	$0.24	153,052.0	-7.11%
Oct 15, 2026	$2.30	$2.21	$0.09	103,807.0	-2.17%
Oct 14, 2026	$2.33	$2.21	$0.12	144,822.0	+0.00%
Oct 13, 2026	$2.39	$2.26	$0.13	86,587.0	-2.13%
Oct 12, 2026	$2.42	$2.31	$0.11	106,265.0	-2.89%
Oct 09, 2026	$2.53	$2.38	$0.1504	57,866.0	-2.02%
Oct 08, 2026	$2.77	$2.35	$0.42	254,352.0	-10.51%
Oct 07, 2026	$2.82	$2.60	$0.22	245,663.0	+2.99%
Oct 06, 2026	$2.77	$2.51	$0.26	86,069.0	+5.51%
Oct 05, 2026	$2.67	$2.51	$0.165	105,087.0	-4.15%
Oct 02, 2026	$2.78	$2.63	$0.15	91,428.0	+0.00%
Oct 01, 2026	$2.91	$2.62	$0.285	182,915.0	-6.69%
Sep 30, 2026	$3.10	$2.73	$0.37	375,611.0	-3.73%
Sep 29, 2026	$3.31	$2.95	$0.355	286,050.0	-6.65%
Sep 28, 2026	$3.24	$2.98	$0.2614	124,177.0	+3.61%
Sep 25, 2026	$3.20	$2.95	$0.25	64,384.0	+0.99%
Sep 24, 2026	$3.28	$3.02	$0.26	93,767.0	-4.13%
Sep 23, 2026	$3.33	$3.10	$0.23	99,945.0	-5.12%

Tecogen Inc Stock (TGEN) Year by Year Price History

In this detailed analysis, we present a comprehensive overview of the price movements of Tecogen Inc stock over the years. By exploring the year-by-year data, investors can gain valuable insights into the historical performance and volatility of TGEN shares. From significant milestones and fluctuations to notable trends, this in-depth examination of Tecogen Inc stock price history provides a foundation for understanding how the company's stock has evolved over time.

Tecogen Inc Stock (TGEN) Price History 2026

Month	High	Low	High - Low	Volume	% Change
Oct, 2026	$2.91	$1.95	$0.96	3,005,950.0	-26.41%
Sep, 2026	$3.38	$2.73	$0.6499	3,149,991.0	-7.19%
Aug, 2026	$4.43	$2.98	$1.44	3,977,292.0	-8.11%
Jul, 2026	$5.45	$2.91	$2.54	5,894,698.0	-36.21%
Jun, 2026	$7.43	$4.95	$2.48	6,276,422.0	-15.94%
May, 2026	$7.18	$3.65	$3.53	12,633,268.0	+29.92%
Apr, 2026	$5.07	$2.47	$2.60	11,686,965.0	+86.72%
Mar, 2026	$3.59	$1.94	$1.65	10,161,369.0	-26.22%
Feb, 2026	$4.21	$3.37	$0.845	4,946,301.0	-7.22%
Jan, 2026	$5.79	$3.71	$2.08	14,447,532.0	-24.29%

Tecogen Inc Stock (TGEN) Price History 2025

Month	High	Low	High - Low	Volume	% Change
Dec, 2025	$7.51	$4.62	$2.89	13,154,768.0	-34.05%
Nov, 2025	$10.47	$5.97	$4.50	11,873,708.0	-25.25%
Oct, 2025	$12.07	$7.82	$4.25	21,523,925.0	+13.28%
Sep, 2025	$10.25	$6.33	$3.92	15,523,972.0	+15.31%
Aug, 2025	$11.55	$7.20	$4.35	18,847,169.0	-21.07%
Jul, 2025	$10.04	$5.63	$4.41	21,962,065.0	+42.35%
Jun, 2025	$7.85	$4.52	$3.33	9,609,568.0	+43.46%
May, 2025	$5.61	$3.02	$2.59	8,307,703.0	+0.00%