CB vs MPC Comparison

ACE acquired Chubb in 2016 and assumed the Chubb name. The combination made the new Chubb one of the largest domestic property and casualty insurers, with operations in over 50 countries spanning commercial and personal P&C insurance, reinsurance, and life insurance.

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.