Alibaba Group Holding missed analysts' estimates for second-quarter sales on Friday, as persistent economic uncertainty sapped consumer spending in China and weighed on the e-commerce group's domestic business.

Alibaba Group, China's e-commerce, entertainment and tech giant, reported a 5% increase in revenues to RMB237 billion ($33.7 billion) in the three months to September. It reported a 63% increase in net profits to RMB43.