Costco Wholesale Corporation (doing business as Costco Wholesale and also known as Costco) is an American multinational corporation that owns and runs a chain of membership-only big-box retail locations (warehouse club). As of 2016, Costco was the world's 5th largest retailer and the leading retailer of choice and prime beef, organic groceries, rotisserie chicken, and wine. Costco was rated #10 on the Fortune 500 list of the top firms in the United States by total revenue in 2021. The Costco Wholesale Corporation is an international corporation based in Washington, D.C. Customers can sign up for memberships to buy bulk products in a warehouse setting. Toys, food, electronics, drinks, housewares, jewelry, and office supplies are among the items sold.