As of December 2025 WESCO International has a market cap of C$18.61 Billion. This makes WESCO International the world's 1540th 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 10th, 2025 the market cap of WESCO International was reported to be: