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A BEHAVIORAL EXPLANATION FOR THE ASYMMETRIC VOLATILITY EFFECT

Mouna Abbes Boujelbãˆne

Journal of Applied Economic Sciences, 2012, vol. 6, issue 6(18)/ Summer 2011, 121-131

Abstract: In this study, we test whether the behavioural bias labelled “disposition effect†, defined as the tendency of investors to ride losses and realize gains, leading to asymmetric return-volatility relation before and during subprime crisis periods. The study of the cross-sectional relation between past cumulative return, current return and volatility shows that volatility is less sensible to return chocks when cumulative past return is positive. Using the capital gain measure of Grinblatt, and Han (2005), we examine the relation between capital gain, current return and volatility for American stocks during tranquil and turmoil periods. We find that negative capital gain of disposition investors explain a large part of asymmetric volatility mainly in subprime crisis period. Moreover, volatility is less sensitive to return shocks under positive capital gain before subprime crisis. Although, during subprime crisis period positive capital gain increases volatility of bigger stocks. This finding can be explained by the loss aversion bias which leads investors to take their positions because of increasing of failure risk during global financial crisis period.

Keywords: asymmetric volatility; disposition effect; behavioural finance; subprime crisis, capital gain (search for similar items in EconPapers)
JEL-codes: C32 F15 (search for similar items in EconPapers)
Date: 2012
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Persistent link: https://EconPapers.repec.org/RePEc:ush:jaessh:v:7:y:2012:i:1(18)_summer2011:p:121

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