SoftBank Group Corp.’s Japanese mobile subsidiary suffered a bitter debut Wednesday on the Tokyo Stock Exchange, slumping 15 percent, hurt by a recent service outage and concerns about the use of parts from Chinese telecom giant Huawei.
SoftBank Group Corp.’s Japanese mobile subsidiary suffered a bitter debut Wednesday on the Tokyo Stock Exchange, slumping 15 percent, hurt by a recent service outage and concerns about the use of parts from Chinese telecom giant Huawei.