May 6, 2013 — Facebook, which went public in May of 2012, made the list for the first time. Its CEO, Mark Zuckerberg, 28, is the youngest on the list.
Jan 25, 2013 — Apple stock has dropped sharply since it announced earnings that disappointed analysts. Now the tech tastemaker is paying another price, losing its crown as the world's most valuable company to Exxon Mobil. Exxon's market capitalization totaled $417 billion Friday, $4 billion more than Apple's.
May 7, 2012 — With 2011 revenues of $452.9 billion, the oil and energy giant edged out Wal-Mart Stores, which brought in $447 billion, Fortune magazine says.