SoftBank Corp. and PayPay Corp. are considering acquiring a stake worth several hundred billion yen in Japanese convenience store operator Seven & i Holdings Co., sources familiar with the matter said Friday.The move by the two companies, both subsidiaries of investment and technology giant SoftBank Group Corp., comes nearly a year after Canadian retailer Alimentation Couche-Tard Inc. withdrew its takeover bid for the operator of the Seven-Eleven convenience store chain.PayPay, the Japanese provider of a popular digital payment app, and telecommunications carrier SoftBank aim to expand thei…READ FULL ARTICLE