Marathon Petroleum Company is a refining, marketing and transportation company owned by Marathon Oil Corporation. With a network of operations spanning more than 20 states, Marathon Petroleum Company has approximately $8 billion in assets. Marathon Oil Corporation is engaged in the worldwide exploration and production of crude oil and natural gas, as well as the domestic refining, marketing and transportation of petroleum products. Marathon Petroleum Company operates the third-largest chain of company-owned and operated retail gasoline outlets in the United States, operating under the Speedway and SuperAmerica brands, as well as a joint venture with Pilot Travel Centers. Marathon Petroleum Company is the nation's fifth-largest petroleum refiner with a capacity of nearly 1 million barrels per day. It has a location in Indianapolis.