US retailer 7-Eleven has announced the acquisition of 3,900 Speedway stores from Marathon Petroleum Corp for $21 billion. Located in 35 states across the US, Speedway is one of the biggest convenience and petrol station retailers in the country, with approximately 40,000 employees. With the acquisition, 7-Eleven will increase its store network to 14,000 across the United States and Canada. Joe DePinto, president and CEO of 7‑Eleven, said: “This acquisition …