Refining Stocks Surge on Earnings Surprise... Market Cap Increased by Nearly 5 Trillion Won in One Day

Marathon Petroleum Corp (MPC) shares rose 6.02% to $187.58 on February 3 in New York trading, lifting its market capitalization by about $3.6 billion (roughly ₩4.9 trillion) to approximately $56.3 billion (₩76 trillion). Broad strength across the refining sector, coupled with upbeat earnings expectations, fueled the rally.

In its Q4 2025 results released that day, the company reported adjusted EPS of $4.07—well above the market consensus of $3.01—and revenue of $33.4 billion, also beating forecasts. Institutional ownership appears to be on the rise, with the Korea National Pension Service increasing its stake by around 1.7% as of the third quarter.

Headquartered in Findlay, Ohio, Marathon Petroleum is one of the largest refiners in the U.S. It operates major refineries along the Gulf Coast and in the Midwest, producing gasoline, diesel, jet fuel and other petroleum products for distribution through wholesale and retail networks. Although its performance is highly cyclical—sensitive to economic conditions, crude prices and refining margins—the company is noted for generating stable cash flows and combining dividend payouts with share repurchases, making it a standout name in the refining industry.