CLIR (ClearSign Technologies) Cyclically Adjusted PB Ratio: 1.08 (As of Sep. 10, 2026) — 34% Below Median

Author: Vera Yuan Vera Yuan
Vera Yuan
Vera Yuan
Director of Data and Quant Analytics at GuruFocus
Focused on building reliable datasets, financial models, and research tools for value-minded investors. Committed to turning complex data into practical guidance for value-investing and long-term wealth.
Reviewed by: Charlie Tian Charlie Tian
Charlie Tian
Charlie Tian
Founder & CEO of GuruFocus
Dr. Charlie Tian is the founder and CEO of GuruFocus.com, a leading global investment research platform established in 2004. With a Ph.D. in physics, Dr. Tian transitioned from science to finance, applying a data-driven, disciplined approach to value investing.

CLIR ClearSign Technologies Corp CLIR
27 GF Score
Price $4.22
! 3 Warning Signs
View Full Analysis

What is ClearSign Technologies Cyclically Adjusted PB Ratio?

ClearSign Technologies CLIR -2.09% 27 Cyclically Adjusted PB Ratio is 1.08 as of Sep. 10, 2026, which is 34% below its 10-year median of 1.63. GuruFocus rates CLIR with a GF Scoreâ„¢ of 27/100. The stock has 3 warning signs investors should review. Among 2,099 Industrial Products companies, ClearSign Technologies ranks better than 74.85% on this metric.

As of today (2026-09-10), ClearSign Technologies's current share price is $4.22. ClearSign Technologies's Cyclically Adjusted Book per Share for the quarter that ended in Jun. 2026 was $3.89. ClearSign Technologies's Cyclically Adjusted PB Ratio for today is 1.08.

The historical rank and industry rank for ClearSign Technologies's Cyclically Adjusted PB Ratio or its related term are showing as below:

CLIR' s Cyclically Adjusted PB Ratio Range Over the Past 10 Years
Min: 0.82   Med: 1.63   Max: 9.23
Current: 1.11

During the past years, ClearSign Technologies's highest Cyclically Adjusted PB Ratio was 9.23. The lowest was 0.82. And the median was 1.63.

CLIR's Cyclically Adjusted PB Ratio is ranked better than
74.85% of 2099 companies
in the Industrial Products industry
Industry Median: 2.14 vs CLIR: 1.11

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.

ClearSign Technologies's adjusted book value per share data for the three months ended in Jun. 2026 was $1.559. 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 $3.89 for the trailing ten years ended in Jun. 2026.

Shiller PE for Stocks: The True Measure of Stock Valuation


ClearSign Technologies  (NAS:CLIR) Cyclically Adjusted PB Ratio Explanation

Compared with the regular PB Ratio, which works poorly for cyclical businesses, the Cyclically Adjusted PB Ratio smoothed out the fluctuations of book value during business cycles. Therefore it is more accurate in reflecting the valuation of the company.

If a company has consistent business performance, the Cyclically Adjusted PB Ratio should give similar results to regular PB Ratio.


ClearSign Technologies Cyclically Adjusted PB Ratio Related Terms


ClearSign Technologies Cyclically Adjusted PB Ratio Historical Data

* Premium members only.

The historical data trend for ClearSign Technologies's Cyclically Adjusted PB Ratio 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.

ClearSign Technologies Cyclically Adjusted PB Ratio Chart

ClearSign Technologies Annual Data
Trend Dec16 Dec17 Dec18 Dec19 Dec20 Dec21 Dec22 Dec23 Dec24 Dec25
Cyclically Adjusted PB Ratio
Get a 7-Day Free Trial Premium Member Only Premium Member Only 2.06 0.85 1.90 2.62 1.33

ClearSign Technologies Quarterly Data
Sep21 Dec21 Mar22 Jun22 Sep22 Dec22 Mar23 Jun23 Sep23 Dec23 Mar24 Jun24 Sep24 Dec24 Mar25 Jun25 Sep25 Dec25 Mar26 Jun26
Cyclically Adjusted PB Ratio 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 1.17 1.72 1.33 1.08 0.94

CLIR vs BCHT, ZONE, LIQT: Cyclically Adjusted PB Ratio Comparison

For the Pollution & Treatment Controls subindustry, ClearSign Technologies'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.


ClearSign Technologies Cyclically Adjusted PB Ratio vs Industrial Products Industry

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

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


CLIR
27GF Score
ClearSign Technologies Corp CLIR
Cyclically Adjusted PB Ratio is just one metric. See GF Score™, valuation, warning signs, and more.
View Full Analysis

ClearSign Technologies Cyclically Adjusted PB Ratio Calculation

Like the Shiller PE Ratio, the Cyclically Adjusted PB Ratio takes the Book Value per Share from the past 10 years, adjusts it for inflation, and then calculates the average. This average is then used for the P/B calculation. Because it considers this 10-year average, it's often referred to as the CAPB Ratio.

The Shiller PE Ratio was first used by professor Robert Shiller to measure the valuation of the overall market. The similar calculation is applied by GuruFocus to calculate the Cyclically Adjusted PB Ratio.

ClearSign Technologies's Cyclically Adjusted PB Ratio for today is calculated as

Cyclically Adjusted PB Ratio=Share Price/ Cyclically Adjusted Book per Share
=4.22/3.89
=1.08

* 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.

ClearSign Technologies's Cyclically Adjusted Book per Share for the quarter that ended in Jun. 2026 is calculated as:

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

Adj_Book=Book Value per Share/CPI of Jun. 2026 (Change)*Current CPI (Jun. 2026)
=1.559/333.9520*333.9520
=1.559

Current CPI (Jun. 2026) = 333.9520.

ClearSign Technologies Quarterly Data

Book Value per Share CPI Adj_Book
201609 3.352 241.428 4.637
201612 1.729 241.432 2.392
201703 5.931 243.801 8.124
201706 4.602 244.955 6.274
201709 3.111 246.819 4.209
201712 1.558 246.524 2.111
201803 5.682 249.554 7.604
201806 4.629 251.989 6.135
201809 7.251 252.439 9.592
201812 6.333 251.233 8.418
201903 5.587 254.202 7.340
201906 4.758 256.143 6.203
201909 4.014 256.759 5.221
201912 3.453 256.974 4.487
202003 2.849 258.115 3.686
202006 2.372 257.797 3.073
202009 3.651 260.280 4.684
202012 3.172 260.474 4.067
202103 3.811 264.877 4.805
202106 3.730 271.696 4.585
202109 2.984 274.310 3.633
202112 2.623 278.802 3.142
202203 2.353 287.504 2.733
202206 2.804 296.311 3.160
202209 2.840 296.808 3.195
202212 2.512 296.797 2.826
202303 2.227 301.836 2.464
202306 1.856 305.109 2.031
202309 1.542 307.789 1.673
202312 1.342 306.746 1.461
202403 1.143 312.332 1.222
202406 3.164 314.175 3.363
202409 2.951 315.301 3.126
202412 2.737 315.605 2.896
202503 2.297 319.799 2.399
202506 1.986 322.561 2.056
202509 1.728 324.800 1.777
202512 1.788 324.054 1.843
202603 1.410 330.213 1.426
202606 1.559 333.952 1.559

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

What does a Cyclically Adjusted PB Ratio of 1.08 mean?
ClearSign Technologies (CLIR) has a Cyclically Adjusted PB Ratio of 1.08 as of Sep. 10, 2026. Cyclically Adjusted PB Ratio is the ratio of share price to a company's inflation-adjusted book value per share over a 10-year period. View historical data on ClearSign Technologies and its competitors. This is 34% below median its historical median of 1.63. Over the past decade, ClearSign Technologies' Cyclically Adjusted PB Ratio has ranged from 0.82 to 9.23. According to the industry distribution chart, ClearSign Technologies ranks #528 out of 2099 companies in the Industrial Products industry, placing it in the top 25.2%.
Is ClearSign Technologies' Cyclically Adjusted PB Ratio too high?
ClearSign Technologies' current Cyclically Adjusted PB Ratio of 1.08 is 34% below median its 10-year median of 1.63. Over the past 10 years, this metric has ranged from a low of 0.82 to a high of 9.23. The Industrial Products industry median Cyclically Adjusted PB Ratio is 2.14. ClearSign Technologies' value of 1.08 is 49.5% below this industry median. Based on the distribution chart, ClearSign Technologies ranks #528 out of 2099 companies in the Industrial Products industry, which is above the industry midpoint. Overall, ClearSign Technologies has a GF Scoreâ„¢ of 27/100, reflecting its overall financial health beyond just this single metric.
How does ClearSign Technologies' Cyclically Adjusted PB Ratio compare to BCHT and ZONE?
According to the Industrial Products industry distribution chart, ClearSign Technologies ranks #528 out of 2099 companies for Cyclically Adjusted PB Ratio. This puts ClearSign Technologies in the upper half of its industry. The industry median Cyclically Adjusted PB Ratio is 2.14. ClearSign Technologies' value of 1.08 is 49.5% below this benchmark. Historically, ClearSign Technologies' own Cyclically Adjusted PB Ratio has ranged from 0.82 to 9.23 over the past decade. While the company's 10-year median is 1.63 vs. the industry median of 2.14, ClearSign Technologies has consistently been below the industry average. See the competitive comparison table and distribution chart on this page for a detailed peer-by-peer breakdown.
What is a good Cyclically Adjusted PB Ratio for an Industrial Products company?
The median Cyclically Adjusted PB Ratio among Industrial Products companies is 2.14, based on 2,099 companies in the industry. Companies in the top quartile (top 25%) have a Cyclically Adjusted PB Ratio significantly above this median, while those in the bottom quartile fall well below. However, Cyclically Adjusted PB Ratio should not be evaluated in isolation — investors should consider it alongside profitability, growth, and financial strength metrics. ClearSign Technologies's current Cyclically Adjusted PB Ratio of 1.08 is 49.5% below the industry median. Use the industry distribution chart on this page to see where any company falls relative to its peers.
What does a high Cyclically Adjusted PB Ratio mean?
A high Cyclically Adjusted PB Ratio can signal that a stock is expensive relative to its fundamentals. Cyclically Adjusted PB Ratio is the ratio of share price to a company's inflation-adjusted book value per share over a 10-year period. View historical data on ClearSign Technologies and its competitors. For the Industrial Products industry, the median Cyclically Adjusted PB Ratio is 2.14 — values significantly above this may indicate overvaluation, while values below may suggest a bargain or underlying issues. ClearSign Technologies's current Cyclically Adjusted PB Ratio is 1.08, which is 34% below median its own 10-year median of 1.63. However, context matters — high-growth companies often justify higher valuations. Always evaluate alongside other metrics like GF Score™ and GF Value™.
Is ClearSign Technologies stock overvalued right now?
ClearSign Technologies (CLIR) has a current Cyclically Adjusted PB Ratio of 1.08. The current Cyclically Adjusted PB Ratio is 1.08, which is 34% below median its 10-year median of 1.63 and 49.5% below the Industrial Products industry median of 2.14. ClearSign Technologies' overall GF Score™ is 27/100 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 PB Ratio calculated?
Cyclically Adjusted PB Ratio is calculated from a company's financial statements. For ClearSign Technologies (CLIR), the current Cyclically Adjusted PB Ratio is 1.08 as of Sep. 10, 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.

ClearSign Technologies Business Description

Other Exchanges 0I0B:UK
Address 8023 East 63rd Place, Suite 101, Tulsa, OK, USA, 74133
ClearSign Technologies Corp is engaged in designing and develop technologies for the purpose of decarbonization and improving key performance characteristics of industrial and commercial combustion systems, including emission and operational performance, energy efficiency and overall cost-effectiveness. Its ClearSign Core technology has been proved to be in full scale industrial test furnaces and boilers and first customer installations are currently operating in normal commercial applications The company offers products that include process burners, boiler burners, flares, and ClearSign Eye. The company operates in one segment: Combustion segment. The products of the company include: Process Burners, Midstream and Power, Flares, Boiler Burners, and Sensing Technology.
27GF Score

Get the complete analysis for CLIR

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

$4.22
Price