7-Eleven's parent company to acquire Speedway for $21 billion

Petroleum refinery operator Marathon Petroleum Corp. (NYSE: MPC) has agreed to sell Speedway, its Ohio-based retailing arm, to the corporate owner of international convenience store chain 7-Eleven for $21 billion. Seven & i Holdings Co., the Tokyo-based parent of 7-Eleven Inc., will add more than 3,900 Speedway stores in 35 states, including more than 200 locations in North Carolina, to its U.S. footprint as part of the all-cash transaction, the company said in a statement Sunday. Marathon said…