He was joined on the list by fellow tech moguls Oracle CEO Larry Ellison, whose $41 billion put him in the No. 3 spot. Amazon.com CEO Jeff Bezos finished 11th with $23.2 billion. Sergey Brin and Larry Page of Google held down the 12 and 13 spots with $20.3 billion apiece. Steve Ballmer, Microsoft's current CEO, ranked 19th with $15.9 billion, while Microsoft co-founder Paul Allen rounded out the top 20 with $15 billion.
Facebook's Mark Zuckerberg, ranked No. 11 in last year's Forbes list, fell to 36 with $17.5 billion.