HONG KONG -- Chinese authorities launched an antimonopoly investigation against e-commerce company Alibaba Group Holding and summoned executives at its Ant Group finance affiliate for talks, in a sign that Beijing is heightening its crackdown on Jack Ma's business interests and the power of the country's tech giants.
Alibaba's shares fell sharply in response to the probe. Its Hong Kong-traded shares ended 8.1% lower at HK$228.20.
