Owens-CorningMIL:1OWC 21 Market Cap is €10,682 Mil as of Jul. 06, 2026. GuruFocus rates MIL:1OWC with a GF Score™ of 21/100 and a GF Value™ of €132.46 (Fairly Valued). The stock has 6 warning signs investors should review. Among 1,808 Construction companies, Owens-Corning ranks better than 97.73% on this metric.
Market cap is the total market value to buy the whole company. It is equal to the share price times the number of Shares Outstanding (EOP). Owens-Corning's share price for the quarter that ended in Mar. 2026 was €92.58. Owens-Corning's Shares Outstanding (EOP) for the quarter that ended in Mar. 2026 was 81 Mil. Therefore, Owens-Corning's market cap for the quarter that ended in Mar. 2026 was €7,453 Mil.
Owens-Corning's quarterly market cap
stayed the same
from Sep. 2025 (€0 Mil) to Dec. 2025 (€0 Mil) but then
increased
from Dec. 2025 (€0 Mil) to Mar. 2026 (€7,453 Mil).
Enterprise Value is the theoretical takeover price. It is more comprehensive than market capitalization (market cap), which only includes common equity. Enterprise Value is calculated as the market cap plus debt and minority interest and preferred shares, minus total cash and cash equivalents. Owens-Corning's Enterprise Value for Today is €15,766 Mil.
Owens-Corning (MIL:1OWC) Market Cap Explanation
Market cap is not the real price you pay for a company. If you buy the company and become its owner, you become the owner of the cash the company has, and you also assume the companys debt. The real price you pay is the Enterprise Value.
Warren Buffett uses the ratio of total market cap of all public traded companies over GDP to measure if the market is expensive. As of April 2012, the US total market cap is about $14.7 trillion, while the US GDP is about $15 trillion. The market was modestly overvalued.
Owens-Corning Market Cap Related Terms
Owens-Corning Market Cap Historical Data
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The historical data trend for Owens-Corning's Market Cap 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.
MIL:1OWC vs AAON, SPXC, WMS: Market Cap Comparison
For the Building Products & Equipment subindustry, Owens-Corning's Market Cap, along with its competitors' market caps and Market Cap 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.
Owens-Corning Market Cap vs Construction Industry
For the Construction industry and Industrials sector, Owens-Corning's Market Cap distribution charts can be found below:
* The bar in red indicates where Owens-Corning's Market Cap falls into.
Market cap is the short version of market capitalization. It is the total market value to buy the whole company. It is equal to the share price times the number of shares outstanding.
Owens-Corning's Market Cap 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.
Owens-Corning (MIL:1OWC) has a Market Cap of €10,682 Mil as of Jul. 06, 2026. Market cap equals the total value of a company's shares: price times shares outstanding. View historical data on Owens-Corning and its competitors. According to the industry distribution chart, Owens-Corning ranks #41 out of 1808 companies in the Construction industry, placing it in the top 2.3%.
Is Owens-Corning's Market Cap too high?
Owens-Corning's current Market Cap is €10,682 Mil. Based on the distribution chart, Owens-Corning ranks #41 out of 1808 companies in the Construction industry, which is in the top quartile — a strong position relative to peers. Overall, Owens-Corning has a GF Score™ of 21/100 and is considered Fairly Valued, reflecting its overall financial health beyond just this single metric.
How does Owens-Corning's Market Cap compare to AAON and SPXC?
According to the Construction industry distribution chart, Owens-Corning ranks #41 out of 1808 companies for Market Cap. This places Owens-Corning in the top 2% of its industry — outperforming the majority of peers. The industry median Market Cap is 121.37. See the competitive comparison table and distribution chart on this page for a detailed peer-by-peer breakdown.
What is a good Market Cap for a Construction company?
The median Market Cap among Construction companies is 121.37, based on 1,808 companies in the industry. Companies in the top quartile (top 25%) have a Market Cap significantly above this median, while those in the bottom quartile fall well below. However, Market Cap 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 Market Cap mean?
A high Market Cap can signal that a stock is expensive relative to its fundamentals. Market cap equals the total value of a company's shares: price times shares outstanding. View historical data on Owens-Corning and its competitors. For the Construction industry, the median Market Cap is 121.37 — values significantly above this may indicate overvaluation, while values below may suggest a bargain or underlying issues. Owens-Corning's current Market Cap is €10,682 Mil. However, context matters — high-growth companies often justify higher valuations. Always evaluate alongside other metrics like GF Score™ and GF Value™.
Is Owens-Corning stock overvalued right now?
Based on GuruFocus' analysis, Owens-Corning (MIL:1OWC) is currently considered Fairly Valued. The stock's GF Value™ is €132.46, compared to a current price of €131.85 — trading 0.5% below its estimated fair value. The current Market Cap is €10,682 Mil. Owens-Corning's overall GF Score™ is 21/100 with 6 warning signs to review. Investors should evaluate multiple metrics — including profitability, growth, and financial strength — before making a decision.
How is Market Cap calculated?
Market Cap is calculated from a company's financial statements. For Owens-Corning (MIL:1OWC), the current Market Cap is €10,682 Mil as of Jul. 06, 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 Owens-Corning (MIL:1OWC) Overvalued in 2026?
Based on GuruFocus' analysis, Owens-Corning stock appears to be undervalued.
The current stock price of €131.85 is trading 0.5% below its estimated GF Value™ of €132.46.
GuruFocus considers Owens-Corning to be Fairly Valued.
Key valuation signals for MIL:1OWC:
Market Cap: €10,682 Mil
GF Value™: €132.46 vs. price of €131.85 (0.5% below fair value)
No single metric tells the full story. See the MIL:1OWC stock analysis page for a complete view including 30-year financials, guru trades, and insider activity.
Owens-Corning Inc is a building products company that offers roofing products and systems, insulation products (hermal and acoustical batts, loose fill insulation, spray foam insulation, wet use chopped strand, etc.), and doors and door systems. The company's reportable segments are: Roofing, Insulation, and Doors. Maximum revenue is generated from the Roofing segment, which manufactures and sells residential roofing shingles, oxidized asphalt materials, roofing components, and composite lumber mainly used in residential construction. This segment also manufactures and sells glass mat and specialty veil materials used in building and construction applications. Geographically, the company generates maximum revenue from the United States, followed by Europe, Asia-Pacific, and other markets.
21GF Score
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