Alibaba Co-Founders' Stock Purchase Boosts Company Shares

Jack Ma and Joe Tsai's investment comes amid company restructuring and regulatory challenges.

Alibaba co-founders Jack Ma and Joe Tsai have bought shares worth $200 million in the fourth quarter, causing the company's stock to rise.
Ma bought $50 million worth of Hong Kong-traded stock, while Tsai purchased about $151 million worth of Alibaba's U.S.-traded shares.
Alibaba's stock has been under pressure due to regulatory scrutiny and a slowing economy in China.
The company scrapped plans to spin off its cloud business in November, citing uncertainties created by U.S. export curbs on tech used in artificial intelligence applications.
Alibaba is restructuring its business into six main units covering e-commerce, media and the cloud.