The youngest billionaires entrepreneur in the world

Mark Zuckberg has been ranked as the first. He owns $28.5 in the year of 30. His fortune make other billionaires awkward. Facebook has gone through 10 years and become a giant in internet industry. Facebook experienced difficulties in IPO in 2012. However, Zuckberg allow this company to fly after that. The stock price of facebook rose more than 130% in 2012, which makes Zuckerberg's net worth doubled.