8. ConocoPhillips No. 5 on the Fortune 500 this year is another big oil company that's reaped handsome profits thanks to record crude oil prices in 2006. But it wasn't oil prices alone: ConocoPhillips managed to boost profits by 15%, to $15.5 billion, on only 4% revenue growth. | Wal-Mart retakes the No. 1 slot on the Fortune 500 this year. See where America's largest corporations rank, and why. (more) See the 37 companies that made both the Fortune 1000 and Best Companies to Work For lists this year. (more) |