6. Jason Chang, $2.9B
Jason Chang (73) is the chairman of Taiwan-based Advanced Semiconductor Engineering (ASE), a provider of independent semiconductor assembling and test manufacturing services.
Founded in 1984 alongside his brother Richard Chang, ASE opened its first factory in Kaohsiung, Taiwan – where it is now based. The brothers are also main investors in commercial real estate developer Sino Horizon Holding.
According to their website, the company generated sales revenue of $4.4 billion and employed over 50,000 staff.
ASE’s market cap is currently $10.45 billion.