As a law student in
Paris in 1996, Wang, along with two high school classmates, created a web portal called SRSNet. This became the prototype for
Sina.com, which was put online in 1998 after a merger of SRSNet and SinaNet, a Chinese language web site in the US. As the General Manager of China Operations, Wang was involved in taking Sina public in April 2000, where it was the first ever Mainland Chinese Internet company to be listed on
Nasdaq. He served as Sina's president in 2001, and as CEO in May 2003. During Wang's tenure as CEO and President, Sina had become a dominant Internet portal with the largest online advertisement market share in China according to
IResearch Consulting Group while pursuing aggressive mergers & acquisitions. In 2003, it emerged as the first profitable public-listing internet group in China by changing into a series of new business opportunities besides online advertising, such as mobile content service of which annual revenue significantly improved in 2004. Under Wang's leadership, Sina started to tap into social media amid fierce competition from rivals. In 2005,
Sina Blog was launched which eventually paved the way for the birth of
Sina Weibo, a Twitter-like micro-blogging platform that would later reach 431 million
monthly active users in June 2018. In 2005, Wang's refusal and resistance to the hostile takeover by
Shanda attracted world-wide attention The takeover was considered as "the first hostile takeover by a leading China-based company of a local rival". After Wang's strong opposition to the deal and Sina's Board's issuance of "poison pill", Shanda backed off. Wang stepped down from CEO in May 2006. In an interview, he admitted some of the mistakes he had made. Afterwards, he stayed on the company's board where he has served in various positions including Acting Chairman and chairman., succeeded by
Charles Chao in October 2012. He remains on the company's board of directors. ==Political and social ventures==