Faculty Publications

Title

The dynamic relation between returns and idiosyncratic volatility

Document Type

Article

Journal/Book/Conference Title

Financial Management

Volume

35

Issue

2

First Page

43

Last Page

65

Abstract

We claim that regressing excess returns on one-lagged volatility provides only a limited picture of the dynamic effect of idiosyncratic risk, which tends to be persistent over time. By correcting for the serial correlation in idiosyncratic volatility, we find that idiosyncratic volatility has a significant positive effect. This finding seems robust for various firm size portfolios, sample periods, and measures of idiosyncratic risk. Our findings suggest stock markets mis-price idiosyncratic risk. There may be some measurement problems with idiosyncratic risk that could be related to nondiversifiable risk.

Original Publication Date

6-1-2006

DOI of published version

10.1111/j.1755-053X.2006.tb00141.x

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