The neo-classical finance theory suggests that capital markets can reasonably reflect the value of listed companies, but it ignores the link between the real economy and the capital market. The current study conducts an analysis of the relevance of the stock return volatility to the company's...

Purpose – The paper aims to test the rational-expectations hypothesis using data from the Chinese stock market. Design/methodology/approach – The rational-expectations hypothesis plays a critical role in economic and financial studies. However, it is unclear whether this hypothesis is...

Value-at-risk (VaR) and expected shortfall (ES) are now both widely used risk measures. However, users have not paid much attention to the estimation risk issues, especially in the case of heteroskedastic financial time series. The key challenge arises from the fact that the estimated...

This paper introduces uncertainty regarding the proportion of informed traders in a rational expectation equilibrium model with asymmetric information. The proportion uncertainty dramatically changes the properties of the resulting equilibrium. First, it may generate multiple nonlinear rational...

Purpose – The paper aims to test the rational-expectations hypothesis using data from the Chinese stock market. Design/methodology/approach – The rational-expectations hypothesis plays a critical role in economic and financial studies. However, it is unclear whether this hypothesis is...