Canada’s biggest convenience store company Couche-Tard has acquired rival chain CST Brands Inc. for $4.4 billion, according to a report in the Financial Post. The acquisition, which is the fourth secured by the Canadian company this year, represents the largest in its history and aims to strengthen the firm’s presence in Texas, USA and eastern Canada. Commenting on the acquisition, Couche-Tard CEO Brian Hannasch said: “With this transaction we would strategically strengthen our …