PH vs MPC Comparison

Parker Hannifin started out in 1917 as Parker Appliance, selling pneumatic brakes. Through the acquisition of branded components, the firm has expanded into aerospace engines, agricultural and construction machinery, freight and passenger vehicles, and industrial automation equipment. Within these larger systems, Parker sells a wide array of small, critical pieces such as hydraulic, electromechanical, climate control, and filtration components. Many of its products are designed to work together, resulting in a high rate of cross-selling.

Marathon Petroleum is a leading integrated downstream and midstream energy company that operates 13 refineries in the Gulf Coast, midcontinent, 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 US; 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.