ORLY vs MPC Comparison

O'Reilly is an aftermarket automotive parts retailer in the United States and Mexico with more than $16 billion in annual sales. The company operates over 6,000 domestic stores and serves both the do-it-yourself (about 50% of sales) and professional (47% of sales) end markets. O'Reilly differentiates itself by providing quality service to its customers throughout the entirety of the vehicle diagnosis and purchasing process. Furthermore, the firm boasts an impressive hub-and-spoke distribution network designed to provide its localized store base with ample aftermarket part availability across a variety of vehicle makes and models.

Marathon Petroleum is a leading integrated downstream and midstream energy company that operates 13 refineries in the Gulf Coast, Mid-Continent, and West Coast regions of the United States with an aggregate crude oil refining capacity of 3.0 million barrels per day. The company is one of the largest producers of renewable diesel in the U.S.; its Dickinson, North Dakota facility has the capacity to produce 184 million gallons per year, and its Martinez, California, joint venture facility (a 50/50 partnership with Neste) reached its full capacity of 730 million gallons per year in late 2024. Marathon also owns the general partner and approximately 64% of MPLX LP, a large-cap master limited partnership that owns and operates midstream energy infrastructure and logistics assets.