As of December 2025 Armstrong World Industries has a market cap of โฌ6.81 Billion. This makes Armstrong World Industries the world's 2293th 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 Dec 7th, 2025 the market cap of Armstrong World Industries was reported to be: