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Asymmetry with respect to the memory in stock market volatilities
Umeå University, Faculty of Social Sciences, Umeå School of Business and Economics (USBE), Economics. Umeå University.
2016 (English)In: Empirical Economics, ISSN 0377-7332, E-ISSN 1435-8921, Vol. 50, no 4, 1409-1419 p.Article in journal (Refereed) Published
Abstract [en]

The empirically most relevant stylized facts when it comes to modeling time-varying financial volatility are the asymmetric response to return shocks and the long memory property. Up till now, these have largely been modeled in isolation. To capture asymmetry also with respect to the memory structure, we introduce a new model and apply it to stock market index data. We find that although the effect on volatility of negative return shocks is higher than for positive ones, the latter are more persistent and relatively quickly dominate negative ones.

Place, publisher, year, edition, pages
Physica Verlag, 2016. Vol. 50, no 4, 1409-1419 p.
Keyword [en]
Financial econometrics, GARCH, News impact, Nonlinear, Risk prediction, Time series
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URN: urn:nbn:se:umu:diva-122226DOI: 10.1007/s00181-015-0975-2ISI: 000375562000011OAI: diva2:937736
Available from: 2016-06-15 Created: 2016-06-15 Last updated: 2016-06-23Bibliographically approved

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Lönnbark, Carl
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