Masayoshi Son (Japanese: 孫 正義, romanized: Son Masayoshi, Korean: 손정의, romanized: Son Jeong-ui; born 11 August 1957) is a Japanese billionaire technology entrepreneur, investor and philanthropist. A third-generation Zainichi Korean, he naturalized as a Japanese citizen in 1990.[2] He is the founder, representative director, corporate officer, chairman and CEO of SoftBank Group Corp. (SBG),[3] a technology-focused investment holding company, as well as chairman of UK-based Arm Holdings.[4]
As an entrepreneur, he achieved notability in PC software distribution, computing-related book and magazine publishing, and telecommunications in Japan, starting in the 1980s and booming throughout the 1990s and 2000s.[5][6] His early $20 million investment in Alibaba Group in 2000 grew substantially over the years, reaching a valuation of around $75 billion by 2014 following Alibaba's IPO and contributing significantly to SoftBank's financial success.[7] SoftBank's 27 percent stake in Alibaba was worth $132 billion in 2018,[8] including additional purchases of the stock since 2000.[9][10] The morphing of his own telecom company SoftBank Corp. into an investment management firm called SoftBank Group Corp. made him noted worldwide as a stock investor. He is known for his bold investment strategies,[11][12] sometimes resulting in major losses, particularly with the first and second SoftBank Vision Funds.[13][14][15]