Alibaba investors get $63 bn richer as shares soar after Jack Ma's video

Alibaba investors added $63 billion to their wealth after Alibaba Co-founder Jack Ma made a public appearance in a video, three months after his last public appearance in October. The stock rose 11% in Hong Kong, marking the biggest stock rally in six months for Alibaba Group Holding. Jack Ma spoke to 100 rural teachers through a video call.