1st Bill Gates Microsoft founder
2nd Warren Buffett Investor, business magnate
3rd Jeff Bezos Amazon founder
4th Amancio Ortega Fashion retail
5th Mark Zuckerberg Facebook founder
6th Carlos Slim Helu & family Mobile networks
7th Larry Ellison Oracle founder
8th= Charles Koch Diverse industries
8th= David Koch Diverse industries
10th Michael Bloomberg Financial data, news