O'Reilly Automotive, Inc. is an aftermarket auto parts retailer serving the United States and Mexico, generating more than $16 billion in annual sales. The company operates over 6,000 stores in the U.S. and caters to both do-it-yourself customers, who account for about 50% of sales, and professional customers, who represent 47% of sales. O'Reilly stands out through its high-quality customer service across the full vehicle diagnosis and parts purchasing process. It also benefits from a strong hub-and-spoke distribution network that supports its local store base with broad aftermarket parts availability for a wide range of vehicle makes and models.