Chinese chat app Momo's shares rise 15 pct in U.S. debut
December 11, 2014 at 11:33 AM EST
Dec 11 (Reuters) - Shares of Momo Inc, a Beijing-based mobile chat app firm backed by Chinese e-commerce giant Alibaba Group Holding Ltd, rose as much as 15 percent in their U.S. trading debut, valuing the company at nearly $3 billion.