SoftBank Corp shares slumped more than 10 per cent in their debut on Wednesday, as investor appetite for Japan's biggest ever IPO was hurt by a recent major service outage and worries over its exposure to Chinese telecom gear maker Huawei.

SoftBank Corp shares slide 10% on debut after record Japan IPO

Ken Miyauchi will replace Nikesh Arora as the chief operating officer and President. Arora was chosen as founder Masayoshi Son's successor

SoftBank names its Japan telecom chief Miyauchi as president

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SoftBank Corp shares slide 10% on debut after record Japan IPO

SoftBank names its Japan telecom chief Miyauchi as president