As of January 2026 Owens Corning has a market cap of ยฃ7.63 Billion. This makes Owens Corning the world's 1955th 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 Jan 10th, 2026 the market cap of Owens Corning was reported to be: