1.Elon Musk Net worth: $219 billion Source of wealth: Tesla, SpaceX Residence: Austin, Texas

2.Jeff Bezo Net worth: $177 billion Source of wealth: Amazon Residence: Seattle, Washington

3.Bill Gate Net worth: $129 billion Source of wealth: Microsoft, investments Residence: Medina, Washington

4.Warren Buffett Net worth: $118 billion Source of wealth: Berkshire Hathaway Residence: Omaha, Nebraska 

5.Larry Page Net worth: $111 billion Source of wealth: Google Residence: Palo Alto, California 

6.Sergey Brin Net worth: $107 billion Source of wealth: Google Residence: Los Altos, California 

7.Larry Ellison Net worth: $106 billion Source of wealth: Software Residence: Lanai, Hawaii

8.Steve Ballmer Net worth: $91.4 billion Source of wealth: Microsoft Residence: Hunts Point, Washington

9.Michael Bloomberg Net worth: $82 billion Source of wealth: Bloomberg LP Residence: New York City 

10.Mark Zuckerberg Net worth: $67.3 billion Source of wealth: Facebook Residence: Palo Alto, California