Fortune 500 rank: 30 (Previous rank: 23)
2006 Revenues (millions): $60,643
Headquarters: Houston, TX
Get quote: MRO
Oil companies continue to be highly profitable thanks to record-high oil prices, giving Marathon annual earnings growth of 73% to $5.2 billion. But lower natural gas prices, as well as high exploration and refining costs, caused a drop in fourth quarter revenue, so sales grew just 3% for the year.
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