PEG Ratio is defined as the PE Ratio without NRI divided by the growth ratio. The growth rate we use is the 5-Year EBITDA growth rate. As of today, Rockwool AS's PE Ratio without NRI is 0.00. Rockwool AS's 5-Year EBITDA growth rate is 5.40%. Therefore, Rockwool AS's PEG Ratio for today is 0.00.
* The 5-Year EBITDA Growth Rate is the 5-year average EBITDA per share growth rate. While the denominator is a percentage, we use the whole number as opposed to the decimal form for the calculation. For example, 5% would be shown as 5 as opposed to 0.05. If it's smaller than or equal to 0, then the PEG Ratio is not calculated.
The historical rank and industry rank for Rockwool AS's PEG Ratio or its related term are showing as below:
During the past 13 years, Rockwool AS's highest PEG Ratio was 28.55. The lowest was 0.43. And the median was 1.73.
WBO:ROCK's PEG Ratio is not ranked *
in the Construction industry.
Industry Median: 1.12 * Ranked among companies with meaningful PEG Ratio only.
Peter Lynch thinks a company with a P/E ratio equal to its growth rate is fairly valued.
Rockwool AS (WBO:ROCK) PEG Ratio Explanation
To compare stocks with different growth rates, Peter Lynch invented a ratio called PEG Ratio. PEG Ratio is defined as the P/E ratio divided by the growth ratio. He thinks a company with a P/E ratio equal to its growth rate is fairly valued. Still he said he would rather buy a company growing 20% a year with a P/E of 20, instead of a company growing 10% a year with a P/E of 10.
Rockwool AS PEG Ratio Related Terms
Rockwool AS PEG Ratio Historical Data
* Premium members only.
The historical data trend for Rockwool AS's PEG 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.
For the Building Products & Equipment subindustry, Rockwool AS's PEG Ratio, along with its competitors' market caps and PEG 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.
Rockwool AS PEG Ratio vs Construction Industry
For the Construction industry and Industrials sector, Rockwool AS's PEG Ratio distribution charts can be found below:
* The bar in red indicates where Rockwool AS's PEG Ratio falls into.
* 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.
* Note: The 5-Year EBITDA Growth Rate is the 5-year average EBITDA per share growth rate. While the denominator is a percentage, we use the whole number as opposed to the decimal form for the calculation. For example, 5% would be shown as 5 as opposed to 0.05. If it's smaller than or equal to 0, then the PEG Ratio is not calculated.
Rockwool AS (WBO:ROCK) has a PEG Ratio of 0.00 as of Jun. 26, 2026. Price-earnings to growth ratio is the ratio of price-earnings to a company's earnings growth rate. View historical data on Rockwool AS and its competitors. Over the past decade, Rockwool AS's PEG Ratio has ranged from 0.43 to 28.55. According to the industry distribution chart, Rockwool AS ranks #999999 out of 683 companies in the Construction industry.
Is Rockwool AS's PEG Ratio too high?
Rockwool AS's current PEG Ratio is 0.00. Over the past 10 years, this metric has ranged from a low of 0.43 to a high of 28.55. Based on the distribution chart, Rockwool AS ranks #999999 out of 683 companies in the Construction industry, which is in the bottom quartile 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 PEG Ratio compare to TT and JCI?
According to the Construction industry distribution chart, Rockwool AS ranks #999999 out of 683 companies for PEG Ratio. This places Rockwool AS in the lower half of its industry. The industry median PEG Ratio is 1.12. Historically, Rockwool AS's own PEG Ratio has ranged from 0.43 to 28.55 over the past decade. See the competitive comparison table and distribution chart on this page for a detailed peer-by-peer breakdown.
What is a good PEG Ratio for a Construction company?
The median PEG Ratio among Construction companies is 1.12, based on 683 companies in the industry. Companies in the top quartile (top 25%) have a PEG Ratio significantly above this median, while those in the bottom quartile fall well below. However, PEG Ratio 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 PEG Ratio mean?
A high PEG Ratio can signal that a stock is expensive relative to its fundamentals. Price-earnings to growth ratio is the ratio of price-earnings to a company's earnings growth rate. View historical data on Rockwool AS and its competitors. For the Construction industry, the median PEG Ratio is 1.12 — values significantly above this may indicate overvaluation, while values below may suggest a bargain or underlying issues. Rockwool AS's current PEG Ratio is 0.00. 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 PEG Ratio is 0.00. 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 PEG Ratio calculated?
PEG Ratio is calculated from a company's financial statements. For Rockwool AS (WBO:ROCK), the current PEG Ratio is 0.00 as of Jun. 26, 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:
PEG Ratio: 0.00
GF Value™: €31.58 vs. price of €29.62 (6.2% below fair value)
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
Get the complete analysis for WBO:ROCK
PEG Ratio is just one metric. See GF Value™, 30-year financials, guru trades, warning signs, and more.
Quick Browse
Personalize
Premium Gurus 
Create New Portfolio
WBO:ROCK has been successfully added to your 
