Angry Chinese nationalists finally woke up on Wednesday to the fact that Japanese and American companies own more than half of e-commerce juggernaut Alibaba, and have done for years.
"Who is Jack Ma working for?" asked some on microblogs, hours after Alibaba Group filed a prospectus for an initial public offering of its shares in the United States, which some say could be the biggest listing ever of a technology stock.
Ma was the lead founder of Alibaba in 1999 and has become something of a cult hero to entrepreneurs and many ordinary Chinese, saying he champions small business against industry giants.
"Jack Ma is a big traitor," wrote another user on Tencent Weibo, a major Twitter-like Chinese microblogging site.
SoftBank invested in Alibaba 14 years ago, and Yahoo bought a 40 percent stake in 2005. Both holdings have long been public knowledge and have been covered in previous disclosures.
Yet this old information triggered a clamor of dismay and indignation among some anti-Japan Internet users in China on Wednesday, who also noted that Chinese native Ma is only Alibaba's third-biggest shareholder, with an 8.9 percent stake.