Billionaire Jack Ma's reappearance fails to soothe investor concerns about regulatory crackdown

Billionaire Jack Ma's reappearance fails to soothe investor concerns about regulatory crackdown

Photographer: Qilai Shen/Bloomberg

Billionaire Jack Ma’s 50-second video reappearance has done little to resolve Alibaba Group’s troubled relationship with regulators that is making some investors hesitate about owning the Chinese e-commerce giant’s stock.