Elon Musk is world's richest person with $204 billion net worth, said Bloomberg Billionaires Index. He's followed by Jeff Bezos ($186 billion) and Bernard Arnault ($183 billion). Bill Gates ($145 billion), Mark Zuckerberg ($145 billion), Steve Ballmer ($142 billion), Larry Page ($137 billion), Sergey Brin ($130 billion), Larry Ellison ($128 billion), Warren Buffet ($128 billion) feature in top 10.