As of November 2026 Owens Corning has a market cap of NZ$16.53 Billion. This makes Owens Corning the world's 2103th 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 Nov 3rd, 2026 the market cap of Owens Corning was reported to be: