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This paper investigates the performance of three different approaches to modelling time-variation in conditional asset betas: GARCH models, the extended market model of Schwert and Seguin (1990) and the Kalman Filter algorithm. Using daily UK industry returns, we find the simple market model...
We examine the effect of information quality around earnings announcements and insider trading events on equity systematic risk. Our results indicate that observed systematic risk significantly increases after these events. Consistent with the insights provided by our framework, the change in...
We extend the feedback trader model by including a cross-market feedback trader. Our analysis of eighteen emerging markets suggests that there exists both positive and negative feedback traders in the markets and their activity is related to stock index return volatility. For cross-market...