Long memory in volatilities of German stock returns

Philipp Sibbertsen

Empirical Economics, 2004, vol. 29, issue 3, 477-488

Abstract: We show that there is strong evidence of long-range dependence in the volatilities of several German stock returns. This will be done by applying a method using the difference of the classical log-periodogram regression estimator for the memory parameter and of the tapered periodogram based estimator. Both estimators give similar values for the memory parameter for each series and this indicates long memory. To support our findings we apply also a methodology using the sample variance and a wavelet based estimator to the data. Also these two methods show clear evidence of long-range dependence in the volatilities of German stock returns. Copyright Springer-Verlag 2004

Keywords: Long memory; volatilities; log-periodogram estimation; C14; C22 (search for similar items in EconPapers)
Date: 2004
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DOI: 10.1007/s00181-003-0179-z

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