Rockwool ASWBO:ROCK +0.47%63 Operating Margin % is 13.25% as of Mar. 2026, which is 1% above its 10-year median of 13.07. GuruFocus rates WBO:ROCK with a GF Score™ of 63/100 and a GF Value™ of €31.58 (Fairly Valued). The stock has 1 warning sign investors should review. Among 1,767 Construction companies, Rockwool AS ranks better than 82.91% on this metric.
Operating Margin % is calculated as Operating Income divided by its Revenue. Rockwool AS's Operating Income for the
three
months ended in Mar. 2026 was €120 Mil. Rockwool AS's Revenue for the
three
months ended in Mar. 2026 was €906 Mil. Therefore, Rockwool AS's Operating Margin % for the quarter that ended in Mar. 2026 was 13.25%.
Good Sign:
Rockwool AS operating margin is expanding. Margin expansion is usually a good sign.
The historical rank and industry rank for Rockwool AS's Operating Margin % or its related term are showing as below:
WBO:ROCK'
s Operating Margin % Range Over the Past 10 Years
Min: 10.24 Med: 13.07 Max: 17.74
Current: 14.64
WBO:ROCK's Operating Margin % is ranked better than 82.91% of 1767
companies
in the Construction industry
Industry Median: 5.89
vs WBO:ROCK: 14.64
Rockwool AS's 5-Year Average Operating Margin % Growth Rate was 6.10% per year.
Rockwool AS's Operating Income for the
three
months ended in Mar. 2026 was €120 Mil.
Its Operating Income for the trailing twelve months (TTM) ended in Mar. 2026 was €560 Mil.
Rockwool AS (WBO:ROCK) Operating Margin % Explanation
Just like Gross Margin %, it is important to see a company maintains its operating margin over time. Among the same industry, a company with higher operating margin is more efficient in its operation. It is also more stable during industry slowdown or recessions. Peter Lynch prefers those with higher margins than those with lower margins.
Be Aware
Operating Margin % can be manipulated by adjusting the rate of depreciation, depletion and amortization (DDA).
If a company is facing competition, its Operating Margin % may decline. Often the Operating Margin % declines well before the company's Revenue or even profit decline. Therefore, Operating Margin % is a very important indicator of whether the company is facing problems.
For instance, by 2012, Nokia (NOK)'s problems were well known and its stock had lost more than 90% of its market value since 2007. But Nokias Operating Margin % had already been in decline since 2002, although its Earnings per Share (Diluted) were still rising. Investors who paid attention to Operating Margin % would have avoided this huge loss. The same can be said for Research-in-Motion (RIMM).
Therefore, Operating Margin % is a very important screening filter for GuruFocus. GuruFocus's Buffett-Munger screener requires that the profit margin is either consistent or expanding. The Model Portfolio of the Buffett-Munger screener has outperformed the market every year since inception in 2009.
Rockwool AS Operating Margin % Related Terms
Rockwool AS Operating Margin % Historical Data
* Premium members only.
The historical data trend for Rockwool AS's Operating Margin % 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.
WBO:ROCK vs TT, JCI, CARR: Operating Margin % Comparison
For the Building Products & Equipment subindustry, Rockwool AS's Operating Margin %, along with its competitors' market caps and Operating Margin % 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 Operating Margin % vs Construction Industry
For the Construction industry and Industrials sector, Rockwool AS's Operating Margin % distribution charts can be found below:
* The bar in red indicates where Rockwool AS's Operating Margin % falls into.
Operating Margin % - also known as operating income margin, operating profit margin and return on sales (ROS) - is the ratio of Operating Income divided by net sales or Revenue, usually presented in percent.
Rockwool AS's Operating Margin % for the fiscal year that ended in Dec. 2025 is calculated as
* 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.
Rockwool AS (WBO:ROCK) has a Operating Margin % of 13.25% as of Mar. 2026. Operating margin is the ratio of total operating income to net sales. View historical data on Rockwool AS and its competitors. This is near median its historical median of 13.07. Over the past decade, Rockwool AS's Operating Margin % has ranged from 10.24 to 17.74. According to the industry distribution chart, Rockwool AS ranks #302 out of 1767 companies in the Construction industry, placing it in the top 17.1%.
Is Rockwool AS's Operating Margin % too high?
Rockwool AS's current Operating Margin % of 13.25% is near median its 10-year median of 13.07. Over the past 10 years, this metric has ranged from a low of 10.24 to a high of 17.74. The Construction industry median Operating Margin % is 5.89. Rockwool AS's value of 13.25% is 125% above this industry median. Based on the distribution chart, Rockwool AS ranks #302 out of 1767 companies in the Construction industry, which is in the top quartile — a strong position relative to peers. Overall, Rockwool AS has a GF Score™ of 63/100 and is considered Fairly Valued, reflecting its overall financial health beyond just this single metric.
How does Rockwool AS's Operating Margin % compare to TT and JCI?
According to the Construction industry distribution chart, Rockwool AS ranks #302 out of 1767 companies for Operating Margin %. This places Rockwool AS in the top 17% of its industry — outperforming the majority of peers. The industry median Operating Margin % is 5.89. Rockwool AS's value of 13.25% is 125% above this benchmark. Historically, Rockwool AS's own Operating Margin % has ranged from 10.24 to 17.74 over the past decade. While the company's 10-year median is 13.07 vs. the industry median of 5.89, Rockwool AS 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 Operating Margin % for a Construction company?
The median Operating Margin % among Construction companies is 5.89, based on 1,767 companies in the industry. Companies in the top quartile (top 25%) have a Operating Margin % significantly above this median, while those in the bottom quartile fall well below. However, Operating Margin % should not be evaluated in isolation — investors should consider it alongside profitability, growth, and financial strength metrics. Rockwool AS's current Operating Margin % of 13.25% is 125% 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 Operating Margin % mean?
A high Operating Margin % can signal that a stock is expensive relative to its fundamentals. Operating margin is the ratio of total operating income to net sales. View historical data on Rockwool AS and its competitors. For the Construction industry, the median Operating Margin % is 5.89 — values significantly above this may indicate overvaluation, while values below may suggest a bargain or underlying issues. Rockwool AS's current Operating Margin % is 13.25%, which is near median its own 10-year median of 13.07. 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?
Based on GuruFocus' analysis, Rockwool AS (WBO:ROCK) is currently considered Fairly Valued. The stock's GF Value™ is €31.58, compared to a current price of €29.62 — trading 6.2% below its estimated fair value. The current Operating Margin % is 13.25%, which is near median its 10-year median of 13.07 and 125% above the Construction industry median of 5.89. Rockwool AS's overall GF Score™ is 63/100 with 1 warning sign to review. Investors should evaluate multiple metrics — including profitability, growth, and financial strength — before making a decision.
How is Operating Margin % calculated?
Operating Margin % is calculated from a company's financial statements. For Rockwool AS (WBO:ROCK), the current Operating Margin % is 13.25% 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 (WBO:ROCK) Overvalued in 2026?
Based on GuruFocus' analysis, Rockwool AS stock appears to be undervalued.
The current stock price of €29.62 is trading 6.2% below its estimated GF Value™ of €31.58.
GuruFocus considers Rockwool AS to be Fairly Valued.
Key valuation signals for WBO:ROCK:
Operating Margin %: 13.25% (near median its 10-year median of 13.07)
GF Value™: €31.58 vs. price of €29.62 (6.2% below fair value)
Industry Position: 125% above the Construction median (#302 of 1767)
No single metric tells the full story. See the WBO:ROCK 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.
63GF Score
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