WESCO International, Inc. is a Fortune 500 electrical, industrial and communications distribution and supply-chain services company headquartered in Pittsburgh, Pennsylvania. Founded in 1922 (originally the Westinghouse Electric Supply Company) and trading on the NYSE under the ticker WCC, WESCO operates around 500 branches and ten automated distribution centers, employs roughly 20,000 people and reported about $22 billion in revenue. It is led by chairman and CEO John Engel.