Conditional skewness modelling for stock returns

Kurt Brännäs (kurt.brannas@gmail.com) and Niklas Nordman

Applied Economics Letters, 2003, vol. 10, issue 11, 725-728

Abstract: Two approaches to modelling conditional skewness in a nonlinear model for stock returns are studied. It is found that a normal distribution can be rejected. A log-generalized gamma distribution with one time-varying density parameter, and a Pearson IV specification with three parameters are better supported by data. While the log-generalized gamma indicates that time-varying skewness is an important feature of the daily composite returns of NYSE, the Pearson IV model suggests that excess kurtosis rather than skewness should be accounted for.

Date: 2003
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Working Paper: Conditional Skewness Modelling for Stock Returns (2001)
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DOI: 10.1080/1350485032000139015

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