4.Joseph Tsai
Up next we have Joseph Tsai.
Net worth: $6.4 billion
Source: E-commerce
In 1999 Jospeph Tsai helped starting Alibaba with Jack Ma, and his effort surely paid off.
He is the vice chairman of Alibaba Group, a conglomerate of Internet-based e-commerce businesses, and made it into the billionaire list earlier this year, after his company held a record-setting initial public offering (IPO) in September, raising $21.8 billion. The sum was the largest IPO ever for a US company.
