Marathon Petroleum Corporation
A refiner and transporter of fuels, Marathon Petroleum runs more than a dozen refineries turning crude into the gasoline and diesel sold at its Marathon® and ARCO® branded stations, while its MPLX arm gathers, moves, and stores oil and gas. It grew out of the Ohio Oil Company, founded in 1887 in Lima, Ohio, and part of Rockefeller's Standard Oil trust, becoming today's company in a 2011 spinoff. Its name and the 'long-distance Greek runner' logo came from buying the Transcontinental Oil Company in 1930.
Estimated from filings — the split-adjusted price range over the quarters each manager built the position. A range, not a fill price; 13F reports a quarter-end snapshot, not a trade date.