The inelastic markets hypothesis states that the aggregate stock market price elasticity of demand is small, implying that flows have large impacts on prices. We exploit demand shocks created as investor funds are frozen and unfrozen during Chinese IPOs to estimate the impact of demand shocks on the Chinese stock market. Using brokerage account records, we observe the selling and buying as investors raise cash to subscribe for IPOs and then reinvest the funds that supported unsuccessful subscriptions. Using an instrumental variables estimator we find that a 10 bps demand shock increases stock prices by between 30 and 48 bps.

he paper assesses the vulnerability of China to external shocks via the indirect negative effect of a slow-down in exports on domestic demand for investment. In the last decade China has increased its dependence on external demand, particularly from the advanced countries; at the same time it has become a primary destination market for goods produced in the rest of emerging Asia. Since 2001 investment expenditures have represented a key driver of Chinese GDP growth; as a very large share of activity in the manufacturing sector is export oriented, we expect fixed capital investment in this sector to be highly related to exports. Overcoming serious shortcomings in available data, we estimate an investment equation for the period 1993-2006 and find an elasticity of investment to exports in the manufacturing sector in the range between 0.9 and 1. Taking into account the dominant contribution of capital accumulation to Chinese GDP growth, we conclude that the growth effects of an external demand shock could become significant when taking into account the domestic investment channel.