As of March 2026 Owens Corning has a market cap of โน821.83 Billion. This makes Owens Corning the world's 2140th most valuable company by market cap according to our data. The market capitalization, commonly called market cap, is the total market value of a publicly traded company's outstanding shares and is commonly used to measure how much a company is worth.
On Mar 17th, 2026 the market cap of Owens Corning was reported to be: