Masayoshi Son (Japanese: 孫 正義 Hepburn: Son Masayoshi, Korean: 손정의 Son Jeong-ui; born August 11, 1957) is a Japanese business magnate and investor of Korean descent who is the founder and current chief executive officer of Japanese holding conglomerate SoftBank, the chief executive officer of SoftBank Mobile, current chairman of U.S.-based Sprint Corporation and chairman of U.K.-based Arm Holdings. According to Forbes magazine, Son's estimated net worth is US $23 billion and he is the richest man in Japan, despite having the distinction of losing the most money in history (approximately $70bn during the dot com crash of 2000). Forbes also describes him as a philanthropist.
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