Don't underestimate oil, about 20% of the fortune 500 is oil related: http://fortune.com/global500/list/filtered?sector=Energy http://fortune.com/global500/list

Don't underestimate oil, about 20% of the fortune 500 is oil related: http://fortune.com/global500/list/filtered?sector=Energy http://fortune.com/global500/list/filtered?sector=Energy