BRIEF: Alibaba stock rallies as Ark Invest buys back in

Shares of Alibaba Group Holding Ltd. (9988.HK, BABA.US) have rallied to a nearly four-year high on media reports that Cathie Wood's Ark Invest recently repurchased $16.3 million worth of the…

BRIEF: Sainsbury ends talks with JD.com on Argos sale

E-commerce giant JD.com Inc. (9618.HK, JD.US) has been actively seeking acquisitions of brick-and-mortar retailers in Europe, but that expansion suffered a setback with the collapse of a deal in the…