Today, Forbes is out with its annual ranking of the world's richest people. Many on the list inherited their fortunes, live off of investments, or are content to sit on large stakes of companies they don't really participate in.
These are 15 people that despite already having dynastic wealth, have chosen to keep leading their companies. All of the people listed here run publicly traded companies, because the leadership functions at private companies vary.
15. Mark Zuckerberg: — Net worth: $13.3 billion

Age: 28
Position: CEO at Facebook
Overall Rank: 66 (tie)
Source: Forbes
14. Tadashi Yanai: — Net worth: $13.3 billion

Age: 64
Position: Founder and CEO at Fast Retailing
Overall Rank: 66 (tie)
Source: Forbes
13. Vagit Alekperov: — Net worth: $14.8 billion

Age: 55
Position: CEO at Lukoil
Overall Rank: 55
Source: Forbes
See the rest of the story at Business Insider