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Masayoshi Son is a man of grand ambitions. But his dream of raising $30 billion in an initial public offering of his Japanese mobile-phone company may be a stretch.
SoftBank Group Corp. is seeking a valuation of about $90 billion for its domestic wireless business and is speaking to advisers about selling a third of the unit, Giles Turner, Ruth David and Takahiko Hyuga of Bloomberg News reported, citing people familiar with the matter.
A deal of that size would make SoftBank Mobile the biggest IPO in history, surpassing the $25 billion raised by Jack Ma’s Alibaba Group Holding Ltd. in 2014.
