Side-by-side comparison of AI visibility scores, market position, and capabilities
Findlay OH petroleum refining (NYSE: MPC); largest US refiner 3M barrels/day, CEO Maryann Mannen elected Chairman (Jan 2026), MPLX midstream MLP, Martinez renewable diesel conversion competing with Valero and Phillips 66.
Marathon Petroleum Corporation is a Findlay, Ohio-based petroleum refining and midstream company — publicly traded on the New York Stock Exchange (NYSE: MPC) as an S&P 500 Energy component — operating the largest crude oil refining system in the United States with 13 refineries and approximately 3 million barrels per day of crude oil processing capacity across Texas, Louisiana, Illinois, Michigan, Ohio, North Dakota, California, and Washington, along with a majority ownership interest in MPLX LP (NYSE: MPLX), a midstream pipeline, terminal, and marine vessel MLP that gathers, processes, transports, and stores crude oil, natural gas, and petroleum products. In a defining leadership development, Marathon Petroleum's board elected CEO Maryann T. Mannen as Chairman of the Board effective January 1, 2026, succeeding Michael Hennigan who retired after leading the company through the Speedway divestiture and pandemic recovery — consolidating corporate governance leadership in Mannen following her tenure as CEO during which she managed the company's operations and capital allocation strategy. Marathon Petroleum's large-scale refining system (including the Galveston Bay refinery in Texas City as the largest US refinery at 631,000 barrels/day) processes crude oil into gasoline, diesel, jet fuel, and specialty products distributed through branded Speedway (sold to 7-Eleven in 2021) and independent dealer networks and MPLX's logistics infrastructure.
NYSE: AXP global closed-loop premium payment network at $65.9B FY2024 revenue with $1.19T transaction volume; Berkshire Hathaway holding competing with Visa and Chase Sapphire for premium consumer and corporate cards.
American Express Company is a New York-based global financial services company — listed on NYSE (NYSE: AXP) and a Berkshire Hathaway top holding — operating a closed-loop payment network that integrates card issuance, merchant acquiring, and rewards processing in a single platform serving premium consumers, small businesses, and corporations with charge cards, credit cards, corporate expense management, and travel services. American Express generated $65.9 billion in total revenue in fiscal year 2024 (+8.98% year-over-year), with $1.19 trillion in US cardmember purchase volume (11.1% market share by purchase volume versus Visa's 61.1% and Mastercard's 25.8%), serving 53.8 million total cards-in-force worldwide including the Platinum Card, Gold Card, Green Card, and Centurion (Black) Card product lines.
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