Exxon Mobil knocks Wal-Mart from the top spot. Who else made the top 50 this year?
They are not only visionary, theyâÄôre scary smart.
McDonalds, JetBlue and Nike are among the companies worth following online
Fortune 500 companies who had phenomenal growth in 2011
From oil to iPads, here are the twenty companies that pull in the most massive sums.