Alibaba Group Holding continued to build excitement for its upcoming initial public offering by reporting a surge in mobile growth and big financial gains in its most recent quarter.
For the three months that ended June 30, the Chinese e-commerce behemoth — which handles more sales than Amazon.com Inc. and EBay Inc. combined — said profit nearly tripled to $2 billion, or 84 cents a share, from a year earlier. Revenue rose 46% to $2.54 billion.
Active buyers increased to 279 million, Alibaba said, 51% higher than the year-earlier quarter and a 9% gain from the January-through-March quarter.
The quarterly figures came in an amended filing with the U.S. Securities and...