Rank	Name	Net worth (billions)
1	Bill Gates	72
2	Warren Buffet	58.5
3	Larry Ellison	41
4	Charles Koch	36
5	David Koch	36
6	Christy Walton	35.4
7	Jim Walton	33.8
8	Alice Walton	33.5
9	S. Robson Walton	33.3
10	Michael Bloomberg	31
11	Sheldon Adelson	28.5
12	Jeff Bezos 	27.2
13	Larry Page	24.9
14	Sergey Brin	24.4
15	Forrest Mars	20.5
16	Jacqueline Mars	20.5
17	John Mars	20.5
18	Carl Icahn	20.3
19	George Soros	20
20	Mark Zucherberg	19