Marathon Petroleum

Marathon Petroleum is one of the largest independent refiners in the United States, operating a nationwide network of refineries alongside the Marathon retail brand and a substantial stake in midstream operator MPLX. Its scale and complex refining assets let it process a wide range of crude grades, giving it a strong position in US fuel supply. The company has grown its dividend since spinning off from Marathon Oil, supported by refining cash flows and steady distributions from MPLX, and has returned large sums through aggressive buybacks. The yield is modest but backed by heavy overall shareholder returns, though earnings swing with refining margins. A high score reflects strong, well-funded capital returns tempered by the inherent cyclicality of refining.