Marathon Petroleum (MPC) reported Q2 adjusted earnings Tuesday of $17.73 per diluted share, up from $3.96 a year earlier.
Analysts polled by FactSet expected $14.27.
Revenue and other income for the quarter ended June 30 was $52.34 billion, up from $34.10 billion a year earlier.
Analysts expected of $40.87 billion.
The company's shares were up 1.9% in premarket activity.