IDENTIFYING REGIME CHANGES IN MARKET VOLATILITY

Weiyu Guo and Mark Wohar

Journal of Financial Research, 2006, vol. 29, issue 1, 79-93

Abstract: A casual inspection of a graph of volatility indexes over time indicates that volatility has undergone infrequent, but significant, shifts in its average level. The purpose of this article is to test for multiple structural breaks in the mean level of market volatility measured by the VIX and VXO, and to identify statistically the dates of these mean shifts. We find evidence of three distinct periods: pre‐1992, 1992–1997, and post‐1997. We find that the mean volatility, as well as its standard deviation, was lowest during 1992–1997. Our findings provide statistical evidence consistent with popular beliefs that market volatility changes over time.

Date: 2006
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Persistent link: https://EconPapers.repec.org/RePEc:bla:jfnres:v:29:y:2006:i:1:p:79-93

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