As of February 2026 Builders FirstSource has a market cap of C$15.73 Billion. This makes Builders FirstSource the world's 1856th 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 Feb 27th, 2026 the market cap of Builders FirstSource was reported to be: