Japan's SoftBank steps closer to transformation with $21 billion mobile IPO

TOKYO (Reuters) - SoftBank Group Corp's domestic telecoms unit on Monday received approval to list on the Tokyo Stock Exchange through one of the biggest-ever initial public offerings (IPO) at 2.4 trillion yen (16.26 billion pounds), a regulatory filing showed.The unit, SoftBank Corp, will list on Dec. 19, the filing with the Ministry of Finance showed.The IPO will mark the transformation of the parent from a mobile phone network provider - which successfully challenged Japan's incumbent..