On Wednesday, Alibaba bought the remaining one-third of UCWeb the e-commerce firm didn't already hold in what it said was the biggest Internet merger in China's history.

Alibaba's purchase of UCWeb emphasizes the company's push to do more business on mobile in the world's biggest smartphone market, where it is locking horns with Tencent Holdings Ltd (>> Tencent Holdings Ltd) and Baidu Inc (>> Baidu Inc (ADR)).

(Reporting by Paul Carsten; Editing by Kazunori Takada)

Stocks treated in this article : Baidu Inc (ADR), Tencent Holdings Ltd