Meet Masayoshi Son, billionaire SoftBank founder with a Cali mansion

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Masayoshi Son, the billionaire founder and CEO of Japanese holding company SoftBank, is worth an estimated $16.3 billion, according to Bloomberg's Billionaires Index.

He's the second-richest person in Japan after Uniqlo founder Tadashi Yanai.

Through SoftBank and his $100 billion Vision Fund, Son invests millions in some of Silicon Valley's biggest tech companies, including Uber, WeWork, Slack, and DoorDash.

He owns $45 million worth of real estate in Tokyo as well as a $117.5 million estate in Silicon Valley.

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Masayoshi Son, the founder and CEO of Japanese holding company SoftBank, is worth an estimated $16.3 billion, according to Bloomberg's Billionaires Index.

That makes him the second-richest person in Japan after Uniqlo founder Tadashi Yanai.

Through SoftBank and his $100 billion Vision Fund, Son invests millions in some of Silicon Valley's biggest tech companies, including Uber, WeWork, Slack, and DoorDash.

Here's a look at Son's life, career, investments, and real-estate portfolio.

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