Casa Ley is a Mexican grocery store chain. Most of its stores are located in the western Mexico states of Baja California, Sonora, Sinaloa, Nayarit, Jalisco, Colima, Michoacán, Coahuila, Chihuahua, Durango, Guanajuato and Baja California Sur, and is Mexico's largest privately held supermarket chain.The chain was founded in 1954, in Culiacán, Sinaloa. The Chairman is Juan Manuel Ley.The company is headquartered in Culiacán, Sinaloa. The company's main competitors are Soriana and Walmart. It is 49% owned by Safeway, Inc.