Regulatory underpricing: Determinants of Chinese extreme IPO returns

The Chinese stock market with its unique institutions is rather different from western stock markets. The average underpricing of Chinese IPOs is 247%, the highest of any major world market. We model this extreme underpricing with a supply–demand analytical framework that captures critical institutional features of China's primary market, and then empirically test this model using a sample of 1377 IPOs listed on the Shanghai and Shenzhen Stock Exchanges between 1992 and 2004. We find that Chinese IPO underpricing is principally caused by government intervention with IPO pricing regulations and the control of IPO share supplies. Besides the regulatory underpricing, this paper also documents some specific investment risks of IPOs in China's stock market.