Softbank's $4bn profit on US tech bets hasn't impressed investors | Nils Pratley

Masayoshi Son looks like a gambler on a lucky streak so it’s no wonder shares in his firm were down 7%Would you trust Masayoshi Son, the man who did so much to promote and finance the WeWork silliness, to take huge short-term punts on your behalf on the value of US technology stocks?Retail shareholders in Softbank, the Japanese firm founded and led by Son, clearly do not. Softbank’s value fell by almost $9bn (£6.8bn), or 7%, on the Tokyo market on Monday after the company was r