Marathon Petroleum Hits Record High as Refiner Stocks Lead Broad Market Rally

Marathon Petroleum shares surged roughly 5.3% on Thursday, October 8, making it one of the top performers in the oil and gas refining and marketing sector and helping push refiner stocks to record highs. Peer Valero Energy also reached a record high on the same session, with the broader refining group gaining approximately 2.9% on the day.

Marathon Petroleum also stood out among components of the iShares U.S. Oil and Gas Exploration and Production ETF, which itself rose about 3% on the day, with MPC shares ranking among the strongest contributors to that move. The stock's outperformance drew attention from CNBC's midday coverage and was flagged by MarketWatch as topping its direct competitors on what the publication described as a strong trading day.

The single-session gain fits within a broader 2026 trend for U.S. refiners. Tightening global fuel markets, driven by more than 7 million barrels per day of disrupted refined product flows, have powered MPC, Valero, and Phillips 66 to gains exceeding 130% year to date, far outpacing the broader market and the major integrated oil companies.