Founded in 1981 by Masayoshi Son, SoftBank Group is a Japanese holding company based in Tokyo.
They own shares of many well-known technology companies including Boston Dynamics, Sprint, Alibaba, Yahoo, and Uber. They also provide a mobile phone service in Japan. SoftBank Mobile is one of the largest phone operation companies in the world based on revenue.
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Minato-ku, Tokyo 105-7303 Access