>> It's not a bank and it doesn't do software. What SoftBank does do nowadays is invest in tech firms. Now it wants investors to return the love. The Japanese firm planning to sell shares in its domestic mobile phone business for about $21 billion. That would mark one of the biggest IPOs ever.
Reuters Ritsuko Ando is in Tokyo.>> So this is significant not just because of the sheer size of the IPO but because it means that SoftBank group is finally becoming a tech investment fund, really splitting off from its original business as a mobile carrier and focusing on investing and innovation and placing big bets on the next big technology trends like ride sharing or even solar energy.
>> SoftBank is already a major technology investor through its $93 billion vision fund. It has pumped cash into companies like Uber, Alibaba, and the self driving Cruise venture. This offering will provide them with billions more. But it might not be the easiest moment to sell shares in a Japanese mobile phone network.
>> The telecoms industry is really in for more competition from now on. The government's trying to get them to lower their prices and it's backing more competition.>> Japanese investors are likely keen though. SoftBank is a big name in the country. It was the first network to offer the iPhone there.
Then there's this man, high profile founder Masayoshi Son, sometimes seen as the Warren Buffet of Asia. He made billions by buying a big, early stack in Alibaba, the Chinese online retail giant Now investors hope his latest big bet will prove equally lucrative.