The fortunes of Alibaba Group Holding Ltd.’s billionaire co-founders have more than tripled this year as the company prepares for an initial public offering.
Alibaba Chairman Jack Ma, 49, has a $12.5 billion net worth, up $8.9 billion year-to-date, according to the Bloomberg Billionaires Index. Joseph Tsai, the company’s executive vice chairman, controls a $4.8 billion fortune.
