1. Bill Gates: $76bn – Microsoft (self-made)

2. Carlos Slim Helu and family: $72bn – Telecom (self-made)

3. Amancio Ortega: $64bn – Zara (self-made)

4. Warren Buffett: $58.2 – Berkshire Hathaway (self-made)

5. Larry Ellison: $48bn – Oracle (self-made)

6. Charles Koch: $40bn – Diversified (inherited and growing)
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7. David Koch: $40bn – Diversified (inherited and growing)

8. Sheldon Adelson: $38bn – Casinos (self-made)

9. Christy Walton & family: $36.7bn – Wal-Mart (inherited)

10. Jim Walton: $34.7bn – Wal-Mart (inherited)

11. Liliane Bettencourt and family: $34.5bn – L‘Oreal (inherited)

12. Stefan Persson: $34.4bn – H&M (inherited and growing)

13. Alice Walton: $34.3bn – Wal-Mart (inherited)

14. S. Robson Walton: $34.2bn – Wal-Mart (inherited)

15. Bernard Arnault and family: $33.5bn – LVMH (inherited and growing)

16. Michael Bloomberg: $33bn – Bloomberg LP (self-made)

17. Larry Page: $32.3bn – Google (self-made)

18. Jeff Bezos: $32bn – Amazon.com (self-made)

19. Sergey Brin: $31.8bn – Google (self-made)

20. Li Ka-shing: $31bn – Diversified (self-made) Data from Forbes