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NYSE American · TGENIndustrialsHVAC Equipment

Tecogen Inc. (TGEN)

$1.53−10.53%
Close Nov 5, 2026 · split-adjusted
Oct 30, 2026$1.99▼ 79.55% in range
Nov 3, 2025Low $1.92 · High $9.73Oct 30, 2026
What changed · written from our data
As of Nov 5, 2026

Tecogen closed at $1.53 on Nov 5, down 10.53%, within 0.0% of its 52-week closing low. Volume of 320.2K shares was 1.44× its 20-day average (above normal).

Split-adjusted performance: -44.6% over one month, -68.3% over six months, -83.6% over one year.

In the quarter ended Jun 30, 2026, revenue was $5.75M, down 21.2% from a year earlier, with a net margin of -37.4%.

Short interest was 1.1M shares at the Oct 15 settlement, down 1.4% from the prior report (6.5% of float, 8.6 days to cover).

Market cap$46.2M30.2M shares
Revenue · quarter$5.7M−21.2% YoY
Diluted EPS$-0.07—
P/E · TTM—P/S 1.9×
Net margin-37.4%Gross 37.8%
Dividend yieldNone
52-week range1.53 – 9.35−83.6% from high
Volume320.2K1.44× 20-day avg
Volatility · 60d83.3%Annualised
Short % of float6.5%8.6 days to cover
Net cash$5.5MCash $6.8M
Next earnings—Not scheduled
Split-adjusted performance
1W −34.3%1M −44.6%3M −60.7%6M −68.3%YTD −69.0%1Y −83.6%3Y —5Y —

Earnings reactions

History →

No reported quarters with price history yet.

Rank within HVAC Equipment

Percentile among 6 companies (100 = best)

6-month momentum—
Revenue growth—
Net margin—
Value (low P/E)—
Size—

Industry medians: 6-month return −36.7%, revenue growth +10.2%, net margin 9.0%, P/E 22.2×.

Short interest

Details →
Shares short1.1M−1.4% vs prior
Days to cover8.6Settled Oct 15
% of float6.5%
Short vol. 10d34.1%of daily volume

Closest peers by size in HVAC Equipment

CompanyPriceToday6MRev. growthNet marginP/EMkt cap
TGENTecogen$1.53−10.53%−68.3%−21.2%−37.4%—$46.2M
AIRJAirJoule Technologies$2.10−12.13%−39.7%———$154.0MCompare
AAONAaon$54.42−6.58%−57.9%+101.2%9.0%28.2$4.49BCompare
LIILennox International$348.79−2.83%−33.8%+10.2%14.1%15.5$11.93BCompare
CARRCarrier Global$53.21−4.40%−20.8%+12.3%−41.4%—$43.53BCompare
JCIJohnson Controls International$131.46−6.45%−5.6%+9.3%11.3%22.2$79.63BCompare

News about Tecogen

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Quick answers

What does Tecogen do?
Tecogen Inc produces commercial and industrial, natural-gas-fueled engine-driven, combined heat and power (CHP) products that reduce energy costs, decrease greenhouse gas emissions and alleviate congestion on the national power grid. Its products supply electric power or mechanical power for cooling.
What is TGEN's market cap?
$46.19M, based on the Nov 5 close of $1.53.
Does Tecogen pay a dividend?
No regular cash dividend has been paid in the last year.
How much of TGEN is sold short?
1.1M shares, 6.5% of float, as of Oct 15, 2026.
What sector is TGEN in?
Industrials, in the HVAC Equipment industry.

About Tecogen

Tecogen Inc produces commercial and industrial, natural-gas-fueled engine-driven, combined heat and power (CHP) products that reduce energy costs, decrease greenhouse gas emissions and alleviate congestion on the national power grid. Its products supply electric power or mechanical power for cooling. The company has three business segments: Products Segment, Services Segment, and Energy Production Segment. The majority of the company's revenue is derived from the Services segment, which provides operations and maintenance (O&M) services for its products under long term service contracts.

HQ: North Billerica, MA120 employeesListed May 20, 2014tecogen.com

Sources: Massive / Polygon daily aggregates (split-adjusted) · SEC filings via Massive · FINRA settlements via Massive · Financial Modeling Prep. Figures are dated where shown; research is informational, not investment advice. Methodology