Standard asset pricing models ignore idiosyncratic risk. In this study, we examine if idiosyncratic or unique risk affects returns for New Zealand stocks using the factor portfolio mimicking approach of Fama and French (1993, 1996). We find evidence of a negative relationship between firm size and a stock's idiosyncratic volatility. We also find that high idiosyncratic volatility firms have high betas and generate low earnings on book equity.
Review of Pacific Basin Financial Markets and Policies – World Scientific Publishing Company
Published: Sep 1, 2007
Keywords: Idiosyncratic volatility asset pricing unique risk JEL Classification: G120 JEL Classification: G150
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