Assessing the idiosyncratic risk and stock returns relation in heteroskedasticity corrected predictive models using quantile regression
Harmindar B. Nath and
Robert D. Brooks
International Review of Economics & Finance, 2015, vol. 38, issue C, 94-111
This paper examines the superiority-claim of the GARCH based measure in resolving the ‘idiosyncratic risk–return puzzle’ using Australian data. The least squares and the quantile regressions of stock-returns on lagged idiosyncratic-volatility estimated from daily data using two measures (including GARCH) fail to support such claim. The quantile regression estimation reveals the risk–return relationship to be quantile dependent; it is parabolic but significant only at the extreme quantiles. The parabolic-form is convex (concave) at the lower (upper) quantiles of the returns' conditional distribution. This changing relationship-form reflects uncertainty in predicting returns. Moreover, the idiosyncratic risk–return puzzle is a model specification problem.
Keywords: Idiosyncratic risk; Quantile regression; GARCH model; Panel data (search for similar items in EconPapers)
JEL-codes: C14 C21 C22 C23 (search for similar items in EconPapers)
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Persistent link: https://EconPapers.repec.org/RePEc:eee:reveco:v:38:y:2015:i:c:p:94-111
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