Rockwool ASRKWAF -6.81%87 ROC (Joel Greenblatt) % is 17.95% as of Mar. 2026, which is 16% below its 10-year median of 21.39. GuruFocus rates RKWAF with a GF Score™ of 87/100 and a GF Value™ of $38.20. The stock has 1 warning sign investors should review. Among 1,778 Construction companies, Rockwool AS ranks worse than 69.8% 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. Rockwool AS's annualized ROC (Joel Greenblatt) % for the quarter that ended in Mar. 2026 was 17.95%.
The historical rank and industry rank for Rockwool AS's ROC (Joel Greenblatt) % or its related term are showing as below:
RKWAF'
s ROC (Joel Greenblatt) % Range Over the Past 10 Years
Min: 6.72 Med: 21.39 Max: 28.53
Current: 6.72
During the past 13 years, Rockwool AS's highest ROC (Joel Greenblatt) % was 28.53%. The lowest was 6.72%. And the median was 21.39%.
RKWAF's ROC (Joel Greenblatt) % is ranked worse than 69.8% of 1778
companies
in the Construction industry
Industry Median: 19.425
vs RKWAF: 6.72
Rockwool AS's 5-Year average Growth Rate of ROC (Joel Greenblatt) % was -8.50% per year.
Rockwool AS (OTCPK:RKWAF) 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.
Rockwool AS ROC (Joel Greenblatt) % Historical Data
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The historical data trend for Rockwool AS'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.
RKWAF vs TT, JCI, CARR: ROC (Joel Greenblatt) % Comparison
For the Building Products & Equipment subindustry, Rockwool AS'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.
Rockwool AS ROC (Joel Greenblatt) % vs Construction Industry
For the Construction industry and Industrials sector, Rockwool AS's ROC (Joel Greenblatt) % distribution charts can be found below:
* The bar in red indicates where Rockwool AS'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 17.95% mean?
Rockwool AS (RKWAF) has a ROC (Joel Greenblatt) % of 17.95% 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 Rockwool AS and its competitors. This is 16% below median its historical median of 21.39. Over the past decade, Rockwool AS's ROC (Joel Greenblatt) % has ranged from 6.72 to 28.53. According to the industry distribution chart, Rockwool AS ranks #1241 out of 1778 companies in the Construction industry, placing it in the top 69.8%.
Is Rockwool AS's ROC (Joel Greenblatt) % too high?
Rockwool AS's current ROC (Joel Greenblatt) % of 17.95% is 16% below median its 10-year median of 21.39. Over the past 10 years, this metric has ranged from a low of 6.72 to a high of 28.53. The Construction industry median ROC (Joel Greenblatt) % is 19.43. Rockwool AS's value of 17.95% is 7.6% below this industry median. Based on the distribution chart, Rockwool AS ranks #1241 out of 1778 companies in the Construction industry, which is below the industry midpoint. Overall, Rockwool AS has a GF Score™ of 87/100, reflecting its overall financial health beyond just this single metric.
How does Rockwool AS's ROC (Joel Greenblatt) % compare to TT and JCI?
According to the Construction industry distribution chart, Rockwool AS ranks #1241 out of 1778 companies for ROC (Joel Greenblatt) %. This places Rockwool AS in the lower half of its industry. The industry median ROC (Joel Greenblatt) % is 19.43. Rockwool AS's value of 17.95% is 7.6% below this benchmark. Historically, Rockwool AS's own ROC (Joel Greenblatt) % has ranged from 6.72 to 28.53 over the past decade. While the company's 10-year median is 21.39 vs. the industry median of 19.43, Rockwool AS 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 ROC (Joel Greenblatt) % for a Construction company?
The median ROC (Joel Greenblatt) % among Construction companies is 19.43, based on 1,778 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. Rockwool AS's current ROC (Joel Greenblatt) % of 17.95% is 7.6% 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 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 Rockwool AS and its competitors. For the Construction industry, the median ROC (Joel Greenblatt) % is 19.43 — values significantly above this may indicate overvaluation, while values below may suggest a bargain or underlying issues. Rockwool AS's current ROC (Joel Greenblatt) % is 17.95%, which is 16% below median its own 10-year median of 21.39. However, context matters — high-growth companies often justify higher valuations. Always evaluate alongside other metrics like GF Score™ and GF Value™.
Is Rockwool AS stock overvalued right now?
Rockwool AS (RKWAF) has a current ROC (Joel Greenblatt) % of 17.95%. The stock's GF Value™ is $38.20, compared to a current price of $34.70 — trading 9.2% below its estimated fair value. The current ROC (Joel Greenblatt) % is 17.95%, which is 16% below median its 10-year median of 21.39 and 7.6% below the Construction industry median of 19.43. Rockwool AS's overall GF Score™ is 87/100 with 1 warning sign 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 Rockwool AS (RKWAF), the current ROC (Joel Greenblatt) % is 17.95% 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 Rockwool AS (RKWAF) Overvalued in 2026?
Based on GuruFocus' analysis, Rockwool AS stock appears to be undervalued.
The current stock price of $34.70 is trading 9.2% below its estimated GF Value™ of $38.20.
Key valuation signals for RKWAF:
ROC (Joel Greenblatt) %: 17.95% (16% below median its 10-year median of 21.39)
GF Value™: $38.20 vs. price of $34.70 (9.2% below fair value)
Industry Position: 7.6% below the Construction median (#1241 of 1778)
No single metric tells the full story. See the RKWAF stock analysis page for a complete view including 30-year financials, guru trades, and insider activity.
Rockwool AS manufactures and sells building materials, including insulation and roofing systems. The company organizes itself into two segments based on the product: Insulation and Systems. The Insulation segment, sells building, industrial, and technical insulation and external thermal insulation wall systems to the construction industry. The Systems business sells acoustic ceilings and wall systems, external cladding systems, horticultural substrate solutions, engineered fiber solutions, and noise and vibration control to the construction and automotive industries. The majority of revenue is from the Insulation Segment. The majority of sales come from Europe.
87GF Score
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