Who are the billionaires who earned the most in 2017?

World's richest person and Amazon CEO Jeff Bezos' net worth grew by $33.8 billion this year, making him the biggest billionaire gainer, according to Forbes. He is followed by China's Hui Ka Yan who gained $27.4 billion and France's Bernard Arnault who added $23.6 billion. India's Mukesh Ambani stood sixth after he gained $18 billion this year.