Tecogen (STU:2T1) Cyclically Adjusted Book per Share: €0.87 (As of Mar. 2026)


STU:2T1 Tecogen Inc STU:2T1
49 GF Score
Price €3.60
GF Value €1.00
Valuation Significantly Overvalued
! 3 Warning Signs
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What is Tecogen Cyclically Adjusted Book per Share?

Tecogen STU:2T1 -6.92% 49 Cyclically Adjusted Book per Share is €0.87 as of Mar. 2026. GuruFocus rates STU:2T1 with a GF Score™ of 49/100 and a GF Value™ of €1.00 (Significantly Overvalued). The stock has 3 warning signs investors should review.

E10 is a concept invented by Prof. Robert Shiller, who uses E10 for his Shiller PE Ratio calculation. E10 is the average of the inflation adjusted earnings of a company over the past 10 years. The similar calculation is applied by GuruFocus to calculate the Cyclically Adjusted Book per Share and the Cyclically Adjusted PB Ratio. The Cyclically Adjusted Book per Share is the average of the inflation adjusted Book Value per Share of a company over the past 10 years.

Tecogen's adjusted book value per share for the three months ended in Mar. 2026 was €0.570. Add all the adjusted book value per share for the past 10 years together and divide the count will get our Cyclically Adjusted Book per Share, which is €0.87 for the trailing ten years ended in Mar. 2026.

During the past 12 months, Tecogen's average Cyclically Adjusted Book Growth Rate was 1.00% per year. During the past 3 years, the average Cyclically Adjusted Book Growth Rate was 3.60% per year. Please click Growth Rate Calculation Example (GuruFocus) to see how GuruFocus calculates Wal-Mart Stores Inc (WMT)'s revenue growth rate. You can apply the same method to get the Cyclically Adjusted Book Growth Rate using Cyclically Adjusted Book per Share data.

During the past 13 years, the highest 3-Year average Cyclically Adjusted Book Growth Rate of Tecogen was 5.60% per year. The lowest was 3.60% per year. And the median was 4.60% per year.

As of today (2026-07-11), Tecogen's current stock price is €3.604. Tecogen's Cyclically Adjusted Book per Share for the quarter that ended in Mar. 2026 was €0.87. Tecogen's Cyclically Adjusted PB Ratio of today is 4.14.

During the past 13 years, the highest Cyclically Adjusted PB Ratio of Tecogen was 9.88. The lowest was 0.64. And the median was 1.43.


Tecogen  (STU:2T1) Cyclically Adjusted Book per Share Explanation

If a company grows much fast than inflation, Cyclically Adjusted Book per Share may underestimate the company's equity. Cyclically Adjusted PB Ratio can seem to be too high even the actual PB Ratio is low.

For the Cyclically Adjusted PB Ratio, the book value of the past 10 years are inflation-adjusted and averaged. The result is used for P/B calculation. Since it looks at the average over the last 10 years, the Cyclically Adjusted PB Ratio is also called CAPB Ratio.

The Shiller PE Ratio was first used by professor Robert Shiller. He uses E10 for his Shiller PE Ratio calculation. E10 is the average of the inflation adjusted earnings per share of a company over the past 10 years. The similar calculation is applied by GuruFocus to calculate the Cyclically Adjusted PB Ratio. The Cyclically Adjusted Book per Share is the average of the inflation adjusted book value per share of a company over the past 10 years.

Tecogen's Cyclically Adjusted PB Ratio of today is calculated as

Cyclically Adjusted PB Ratio=Share Price/Cyclically Adjusted Book per Share
=3.604/0.87
=4.14

* For Operating Data section: All numbers are indicated by the unit behind each term and all currency related amount are in USD.
* For other sections: All numbers are in millions except for per share data, ratio, and percentage. All currency related amount are indicated in the company's associated stock exchange currency.

During the past 13 years, the highest Cyclically Adjusted PB Ratio of Tecogen was 9.88. The lowest was 0.64. And the median was 1.43.


Be Aware

Cyclically Adjusted PB Ratio works better for cyclical companies. It gives you a better idea on the company's real book value.


Tecogen Cyclically Adjusted Book per Share Related Terms


Tecogen Cyclically Adjusted Book per Share Historical Data

* Premium members only.

The historical data trend for Tecogen's Cyclically Adjusted Book per Share can be seen below:

* For Operating Data section: All numbers are indicated by the unit behind each term and all currency related amount are in USD.
* For other sections: All numbers are in millions except for per share data, ratio, and percentage. All currency related amount are indicated in the company's associated stock exchange currency.

Tecogen Cyclically Adjusted Book per Share Chart

Tecogen Annual Data
Trend Dec16 Dec17 Dec18 Dec19 Dec20 Dec21 Dec22 Dec23 Dec24 Dec25
Cyclically Adjusted Book per Share
Get a 7-Day Free Trial Premium Member Only Premium Member Only 0.70 0.78 0.79 0.86 0.85

Tecogen Quarterly Data
Jun21 Sep21 Dec21 Mar22 Jun22 Sep22 Dec22 Mar23 Jun23 Sep23 Dec23 Mar24 Jun24 Sep24 Dec24 Mar25 Jun25 Sep25 Dec25 Mar26
Cyclically Adjusted Book per Share Get a 7-Day Free Trial Premium Member Only Premium Member Only Premium Member Only Premium Member Only Premium Member Only Premium Member Only Premium Member Only Premium Member Only Premium Member Only Premium Member Only Premium Member Only Premium Member Only 0.86 0.84 0.79 0.85 0.87

STU:2T1 vs UTKN, SKYX, EAF: Cyclically Adjusted Book per Share Comparison

For the Electrical Equipment & Parts subindustry, Tecogen's Cyclically Adjusted PB Ratio, along with its competitors' market caps and Cyclically Adjusted PB Ratio data, can be viewed below:

* Competitive companies are chosen from companies within the same industry, with headquarter located in same country, with closest market capitalization; x-axis shows the market cap, and y-axis shows the term value; the bigger the dot, the larger the market cap. Note that "N/A" values will not show up in the chart.


Tecogen Cyclically Adjusted PB Ratio vs Industrial Products Industry

For the Industrial Products industry and Industrials sector, Tecogen's Cyclically Adjusted PB Ratio distribution charts can be found below:

* The bar in red indicates where Tecogen's Cyclically Adjusted PB Ratio falls into.


STU:2T1
49GF Score
Tecogen Inc STU:2T1
Cyclically Adjusted Book per Share is just one metric. See GF Score™, valuation, warning signs, and more.
View Full Analysis

Tecogen Cyclically Adjusted Book per Share Calculation

E10 is a concept invented by Prof. Robert Shiller, who uses E10 for his Shiller PE Ratio calculation. E10 is the average of the inflation adjusted earnings of a company over the past 10 years. The similar calculation is applied by GuruFocus to calculate the Cyclically Adjusted Book per Share and the Cyclically Adjusted PB Ratio. The Cyclically Adjusted Book per Share is the average of the inflation adjusted Book Value per Share of a company over the past 10 years.

What is Cyclically Adjusted Book per Share? How do we calculate Cyclically Adjusted Book per Share?

Cyclically Adjusted Book per Share is the average of the inflation adjusted Book Value per Share of a company over the past 10 years. Let's use an example to explain.

If we want to calculate the Cyclically Adjusted Book per Share of Wal-Mart (WMT) for Dec. 31, 2010, we need to have the inflation data and the book value per share from 2001 through 2010.

We adjusted the 2001 book value per share data with the total inflation from 2001 through 2010 to the equivalent book value in 2010. If the total inflation from 2001 to 2010 is 40%, and Wal-Mart's book value is $1 a share in 2001, then the 2001's equivalent book value in 2010 is $1.4 a share. If Wal-Mart's book value is $1 again in 2002, and the total inflation from 2002 through 2010 is 35%, then the equivalent 2002 book value in 2010 is $1.35. So on and so forth, you get the equivalent book value per share of past 10 years. Then you add them together and divided the sum by the count to get Cyclically Adjusted Book per Share.

Please note that we use the CPI data of the country/region where the company is headquartered. If the CPI data for that country/region is not available, then we will use the CPI data of the United States as default.

For example, Tecogen's adjusted Book Value per Share data for the three months ended in Mar. 2026 was:

Adj_Book= Book Value per Share /CPI of Mar. 2026 (Change)*Current CPI (Mar. 2026)
=0.57/330.2130*330.2130
=0.570

Current CPI (Mar. 2026) = 330.2130.

Tecogen Quarterly Data

Book Value per Share CPI Adj_Book
201606 0.519 241.018 0.711
201609 0.642 241.428 0.878
201612 0.688 241.432 0.941
201703 0.686 243.801 0.929
201706 1.179 244.955 1.589
201709 1.115 246.819 1.492
201712 1.134 246.524 1.519
201803 1.090 249.554 1.442
201806 1.126 251.989 1.476
201809 1.108 252.439 1.449
201812 0.984 251.233 1.293
201903 0.875 254.202 1.137
201906 0.864 256.143 1.114
201909 0.866 256.759 1.114
201912 0.843 256.974 1.083
202003 0.805 258.115 1.030
202006 0.768 257.797 0.984
202009 0.728 260.280 0.924
202012 0.573 260.474 0.726
202103 0.646 264.877 0.805
202106 0.654 271.696 0.795
202109 0.721 274.310 0.868
202112 0.755 278.802 0.894
202203 0.782 287.504 0.898
202206 0.785 296.311 0.875
202209 0.831 296.808 0.925
202212 0.725 296.797 0.807
202303 0.665 301.836 0.728
202306 0.629 305.109 0.681
202309 0.623 307.789 0.668
202312 0.544 306.746 0.586
202403 0.507 312.332 0.536
202406 0.456 314.175 0.479
202409 0.410 315.301 0.429
202412 0.392 315.605 0.410
202503 0.357 319.799 0.369
202506 0.309 322.561 0.316
202509 0.728 324.800 0.740
202512 0.619 324.054 0.631
202603 0.570 330.213 0.570

Add all the adjusted book value per share together and divide the count will get our Cyclically Adjusted Book per Share.

What does a Cyclically Adjusted Book per Share of €0.87 mean?
Tecogen (STU:2T1) has a Cyclically Adjusted Book per Share of €0.87 as of Mar. 2026. Cyclically adjusted book value per share represents the company's inflation-adjusted book value per share over a 10-year period. View historical data on Tecogen and its competitors.
Is Tecogen's Cyclically Adjusted Book per Share too high?
Tecogen's current Cyclically Adjusted Book per Share is €0.87. Overall, Tecogen has a GF Score™ of 49/100 and is considered Significantly Overvalued, reflecting its overall financial health beyond just this single metric.
How does Tecogen's Cyclically Adjusted Book per Share compare to UTKN and SKYX?
Tecogen's Cyclically Adjusted Book per Share of €0.87 can be compared against companies in the Industrial Products industry. See the competitive comparison table and distribution chart on this page for a detailed peer-by-peer breakdown.
What is a good Cyclically Adjusted Book per Share for an Industrial Products company?
A good Cyclically Adjusted Book per Share depends on the Industrial Products industry context. However, Cyclically Adjusted Book per Share should not be evaluated in isolation — investors should consider it alongside profitability, growth, and financial strength metrics. Use the industry distribution chart on this page to see where any company falls relative to its peers.
What does a high Cyclically Adjusted Book per Share mean?
A high Cyclically Adjusted Book per Share can signal that a stock is expensive relative to its fundamentals. Cyclically adjusted book value per share represents the company's inflation-adjusted book value per share over a 10-year period. View historical data on Tecogen and its competitors. Tecogen's current Cyclically Adjusted Book per Share is €0.87. However, context matters — high-growth companies often justify higher valuations. Always evaluate alongside other metrics like GF Score™ and GF Value™.
Is Tecogen stock overvalued right now?
Based on GuruFocus' analysis, Tecogen (STU:2T1) is currently considered Significantly Overvalued. The stock's GF Value™ is €1.00, compared to a current price of €3.60 — trading 260.4% above its estimated fair value. The current Cyclically Adjusted Book per Share is €0.87. Tecogen's overall GF Score™ is 49/100 with 3 warning signs to review. Investors should evaluate multiple metrics — including profitability, growth, and financial strength — before making a decision.
How is Cyclically Adjusted Book per Share calculated?
Cyclically Adjusted Book per Share is calculated from a company's financial statements. For Tecogen (STU:2T1), the current Cyclically Adjusted Book per Share is €0.87 as of Mar. 2026. GuruFocus calculates this using data sourced from SEC filings and annual reports. See the calculation section and 30-year financial data on this page for the full breakdown.

Is Tecogen (STU:2T1) Overvalued in 2026?

Based on GuruFocus' analysis, Tecogen stock appears to be overvalued. The current stock price of €3.60 is trading 260.4% above its estimated GF Value™ of €1.00. GuruFocus considers Tecogen to be Significantly Overvalued.

Key valuation signals for STU:2T1:

  • Cyclically Adjusted Book per Share: €0.87
  • GF Value™: €1.00 vs. price of €3.60 (260.4% above fair value)
  • GF Score™: 49/100 with 3 warning signs

No single metric tells the full story. See the STU:2T1 stock analysis page for a complete view including 30-year financials, guru trades, and insider activity.


Tecogen Business Description

Other Exchanges TGEN:USA
Address 76 Treble Cove Road, Building 1, North Billerica, MA, USA, 01862
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.
49GF Score

Get the complete analysis for STU:2T1

Cyclically Adjusted Book per Share is just one metric. See GF Value™, 30-year financials, guru trades, warning signs, and more.

€3.60
Price
€1.00
GF Value