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QleanAir ABOSTO:QAIR +2.45%77 ROC (Joel Greenblatt) % is 64.27% as of Mar. 2026, which is 48% below its 10-year median of 123.64. GuruFocus rates OSTO:QAIR with a GF Score™ of 77/100 and a GF Value™ of kr24.55 (Modestly Undervalued). The stock has 4 warning signs investors should review. Among 3,064 Industrial Products companies, QleanAir AB ranks better than 94.71% on this metric.
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. QleanAir AB's annualized ROC (Joel Greenblatt) % for the quarter that ended in Mar. 2026 was 64.27%.
The historical rank and industry rank for QleanAir AB's ROC (Joel Greenblatt) % or its related term are showing as below:
OSTO:QAIR'
s ROC (Joel Greenblatt) % Range Over the Past 10 Years
Min: 20.13 Med: 123.64 Max: 266.18
Current: 79.65
During the past 10 years, QleanAir AB's highest ROC (Joel Greenblatt) % was 266.18%. The lowest was 20.13%. And the median was 123.64%.
OSTO:QAIR's ROC (Joel Greenblatt) % is ranked better than 94.71% of 3064
companies
in the Industrial Products industry
Industry Median: 11.805
vs OSTO:QAIR: 79.65
QleanAir AB's 5-Year average Growth Rate of ROC (Joel Greenblatt) % was -23.00% per year.
QleanAir AB (OSTO:QAIR) ROC (Joel Greenblatt) % Explanation
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.
QleanAir AB ROC (Joel Greenblatt) % Historical Data
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The historical data trend for QleanAir AB'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.
OSTO:QAIR vs VLTO, ZWS, CECO: ROC (Joel Greenblatt) % Comparison
For the Pollution & Treatment Controls subindustry, QleanAir AB'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.
QleanAir AB ROC (Joel Greenblatt) % vs Industrial Products Industry
For the Industrial Products industry and Industrials sector, QleanAir AB's ROC (Joel Greenblatt) % distribution charts can be found below:
* The bar in red indicates where QleanAir AB'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 64.27% mean?
QleanAir AB (OSTO:QAIR) has a ROC (Joel Greenblatt) % of 64.27% 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 QleanAir AB and its competitors. This is 48% below median its historical median of 123.64. Over the past decade, QleanAir AB's ROC (Joel Greenblatt) % has ranged from 20.13 to 266.18. According to the industry distribution chart, QleanAir AB ranks #162 out of 3064 companies in the Industrial Products industry, placing it in the top 5.3%.
Is QleanAir AB's ROC (Joel Greenblatt) % too high?
QleanAir AB's current ROC (Joel Greenblatt) % of 64.27% is 48% below median its 10-year median of 123.64. Over the past 10 years, this metric has ranged from a low of 20.13 to a high of 266.18. The Industrial Products industry median ROC (Joel Greenblatt) % is 11.81. QleanAir AB's value of 64.27% is 444.4% above this industry median. Based on the distribution chart, QleanAir AB ranks #162 out of 3064 companies in the Industrial Products industry, which is in the top quartile — a strong position relative to peers. Overall, QleanAir AB has a GF Score™ of 77/100 and is considered Modestly Undervalued, reflecting its overall financial health beyond just this single metric.
How does QleanAir AB's ROC (Joel Greenblatt) % compare to VLTO and ZWS?
According to the Industrial Products industry distribution chart, QleanAir AB ranks #162 out of 3064 companies for ROC (Joel Greenblatt) %. This places QleanAir AB in the top 5% of its industry — outperforming the majority of peers. The industry median ROC (Joel Greenblatt) % is 11.81. QleanAir AB's value of 64.27% is 444.4% above this benchmark. Historically, QleanAir AB's own ROC (Joel Greenblatt) % has ranged from 20.13 to 266.18 over the past decade. While the company's 10-year median is 123.64 vs. the industry median of 11.81, QleanAir AB has consistently been above 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 ROC (Joel Greenblatt) % for an Industrial Products company?
The median ROC (Joel Greenblatt) % among Industrial Products companies is 11.81, based on 3,064 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. QleanAir AB's current ROC (Joel Greenblatt) % of 64.27% is 444.4% above 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 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 QleanAir AB and its competitors. For the Industrial Products industry, the median ROC (Joel Greenblatt) % is 11.81 — values significantly above this may indicate overvaluation, while values below may suggest a bargain or underlying issues. QleanAir AB's current ROC (Joel Greenblatt) % is 64.27%, which is 48% below median its own 10-year median of 123.64. However, context matters — high-growth companies often justify higher valuations. Always evaluate alongside other metrics like GF Score™ and GF Value™.
Is QleanAir AB stock overvalued right now?
Based on GuruFocus' analysis, QleanAir AB (OSTO:QAIR) is currently considered Modestly Undervalued. The stock's GF Value™ is kr24.55, compared to a current price of kr18.85 — trading 23.2% below its estimated fair value. The current ROC (Joel Greenblatt) % is 64.27%, which is 48% below median its 10-year median of 123.64 and 444.4% above the Industrial Products industry median of 11.81. QleanAir AB's overall GF Score™ is 77/100 with 4 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 QleanAir AB (OSTO:QAIR), the current ROC (Joel Greenblatt) % is 64.27% 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 QleanAir AB (OSTO:QAIR) Overvalued in 2026?
Based on GuruFocus' analysis, QleanAir AB stock appears to be undervalued.
The current stock price of kr18.85 is trading 23.2% below its estimated GF Value™ of kr24.55.
GuruFocus considers QleanAir AB to be Modestly Undervalued.
Key valuation signals for OSTO:QAIR:
ROC (Joel Greenblatt) %: 64.27% (48% below median its 10-year median of 123.64)
GF Value™: kr24.55 vs. price of kr18.85 (23.2% below fair value)
Industry Position: 444.4% above the Industrial Products median (#162 of 3064)
No single metric tells the full story. See the OSTO:QAIR stock analysis page for a complete view including 30-year financials, guru trades, and insider activity.
QleanAir AB is a provider of clean indoor environment solutions. The company's business model is based on rental contracts for modular solutions with a full-service offer. Its solutions are developed using filter technology that traps, filters and recycles indoor air. The product portfolio consists of stand-alone air cleaners (Air Cleaners), solutions for protection against passive smoking (Cabin Solutions) and flexible, modular cleanrooms (Cleanrooms). The company's main markets are EMEA, APAC and the Americas.
77GF Score
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