Joel Greenblatt defined Return on Capital differently in his book The Little Book That Still Beats the Market (Little Books. Big Profits). He defines ROC (Joel Greenblatt) % as EBIT divided by the total of Property, Plant and Equipment and net working capital. ClearSign Technologies's annualized ROC (Joel Greenblatt) % for the quarter that ended in Mar. 2026 was -4,988.37%.
The historical rank and industry rank for ClearSign Technologies's ROC (Joel Greenblatt) % or its related term are showing as below:
CLIR'
s ROC (Joel Greenblatt) % Range Over the Past 10 Years
Min: -2921.77 Med: -1719.33 Max: -1269.6
Current: -2846.19
During the past 13 years, ClearSign Technologies's highest ROC (Joel Greenblatt) % was -1269.60%. The lowest was -2921.77%. And the median was -1719.33%.
CLIR's ROC (Joel Greenblatt) % is ranked worse than 99.51% of 3057
companies
in the Industrial Products industry
Industry Median: 11.71
vs CLIR: -2846.19
ClearSign Technologies's 5-Year average Growth Rate of ROC (Joel Greenblatt) % was -15.70% per year.
The way Joel Greenblatt defines Return on Capital is a more accurate measure of how efficiently the company generates returns onthe capital actually invested in the business. EBIT is used instead of net income because the tax and interest payment may be affected by factors other than the core business operation. Intangible assets are not included in the calculation because they don't need to be replaced.
ClearSign Technologies ROC (Joel Greenblatt) % Related Terms
ClearSign Technologies ROC (Joel Greenblatt) % Historical Data
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The historical data trend for ClearSign Technologies's ROC (Joel Greenblatt) % 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.
CLIR vs RAIN, TOMZ, LIQT: ROC (Joel Greenblatt) % Comparison
For the Pollution & Treatment Controls subindustry, ClearSign Technologies's ROC (Joel Greenblatt) %, along with its competitors' market caps and ROC (Joel Greenblatt) % 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 ROC (Joel Greenblatt) % vs Industrial Products Industry
For the Industrial Products industry and Industrials sector, ClearSign Technologies's ROC (Joel Greenblatt) % distribution charts can be found below:
* The bar in red indicates where ClearSign Technologies's ROC (Joel Greenblatt) % falls into.
Joel Greenblatt defined Return on Capital differently in his book The Little Book That Still Beats the Market (Little Books. Big Profits) . He defines Return on Capital as follows:
EBIT stands for Earnings Before Interest and Taxes.
Fixed Assets are also known as non-current assets. They include the Property, Plant and Equipment that the firm needs in its operation.
GuruFocus calculates net working capital as: (Accounts Receivable + Total Inventories + Other Current Assets) - (Accounts Payable & Accrued Expense + Deferred Revenue + Other Current Liabilities). We're trying to account for OPERATING assets and liabilities (part of daily business) when calculating working capital. Cash and marketable securities are considered NON-OPERATING assets and are not included in calculation. We will also back out all interest bearing debt, short term debt and the portion of long term debt that is due in the current period from the current liabilities. This debt will be considered when computing cost of capital and it would be inappropriate to count it twice.
Note:
The EBIT data used here is four times the quarterly (Mar. 2026) EBIT data.
* 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.
What does a ROC (Joel Greenblatt) % of -4,988.37% mean?
ClearSign Technologies (CLIR) has a ROC (Joel Greenblatt) % of -4,988.37% as of Mar. 2026. Joel Greenblatt's return on capital is the ratio of EBIT to average fixed assets and net working capital. View historical data on ClearSign Technologies and its competitors. According to the industry distribution chart, ClearSign Technologies ranks #3042 out of 3057 companies in the Industrial Products industry, placing it in the top 99.5%.
Is ClearSign Technologies' ROC (Joel Greenblatt) % too high?
ClearSign Technologies' current ROC (Joel Greenblatt) % is -4,988.37%. Based on the distribution chart, ClearSign Technologies ranks #3042 out of 3057 companies in the Industrial Products industry, which is in the bottom quartile relative to peers. Overall, ClearSign Technologies has a GF Score™ of 40/100 and is considered Possible Value Trap, reflecting its overall financial health beyond just this single metric.
How does ClearSign Technologies' ROC (Joel Greenblatt) % compare to RAIN and TOMZ?
According to the Industrial Products industry distribution chart, ClearSign Technologies ranks #3042 out of 3057 companies for ROC (Joel Greenblatt) %. This places ClearSign Technologies in the lower half of its industry. The industry median ROC (Joel Greenblatt) % is 11.71. See the competitive comparison table and distribution chart on this page for a detailed peer-by-peer breakdown.
What is a good ROC (Joel Greenblatt) % for an Industrial Products company?
The median ROC (Joel Greenblatt) % among Industrial Products companies is 11.71, based on 3,057 companies in the industry. Companies in the top quartile (top 25%) have a ROC (Joel Greenblatt) % significantly above this median, while those in the bottom quartile fall well below. However, ROC (Joel Greenblatt) % 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 ROC (Joel Greenblatt) % mean?
A high ROC (Joel Greenblatt) % can signal that a stock is expensive relative to its fundamentals. Joel Greenblatt's return on capital is the ratio of EBIT to average fixed assets and net working capital. View historical data on ClearSign Technologies and its competitors. For the Industrial Products industry, the median ROC (Joel Greenblatt) % is 11.71 — values significantly above this may indicate overvaluation, while values below may suggest a bargain or underlying issues. ClearSign Technologies's current ROC (Joel Greenblatt) % is -4,988.37%. 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?
Based on GuruFocus' analysis, ClearSign Technologies (CLIR) is currently considered Possible Value Trap. The stock's GF Value™ is $14.95, compared to a current price of $3.84 — trading 74.3% below its estimated fair value. The current ROC (Joel Greenblatt) % is -4,988.37%. ClearSign Technologies' overall GF Score™ is 40/100 with 2 warning signs to review. Investors should evaluate multiple metrics — including profitability, growth, and financial strength — before making a decision.
How is ROC (Joel Greenblatt) % calculated?
ROC (Joel Greenblatt) % is calculated from a company's financial statements. For ClearSign Technologies (CLIR), the current ROC (Joel Greenblatt) % is -4,988.37% 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 ClearSign Technologies (CLIR) Overvalued in 2026?
Based on GuruFocus' analysis, ClearSign Technologies stock appears to be undervalued.
The current stock price of $3.84 is trading 74.3% below its estimated GF Value™ of $14.95.
GuruFocus considers ClearSign Technologies to be Possible Value Trap.
Key valuation signals for CLIR:
ROC (Joel Greenblatt) %: -4,988.37%
GF Value™: $14.95 vs. price of $3.84 (74.3% below fair value)
No single metric tells the full story. See the CLIR stock analysis page for a complete view including 30-year financials, guru trades, and insider activity.
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.
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