United Parcel Service (UPS) is an American multinational shipping, receiving and supply-chain management company founded in Seattle in 1907 as the American Messenger Company. It is the world's largest courier company by revenue and one of the largest private employers in the United States, serving more than 200 countries and territories with approximately 460,000 employees. Alongside ground and air parcel delivery it operates UPS Airlines, The UPS Store retail network, UPS Supply Chain Solutions, UPS Healthcare and UPS Capital, with its main global air hub, Worldport, in Louisville, Kentucky. UPS has traded on the NYSE since its November 1999 IPO and reported 2025 revenue of $88.7 billion.