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Why do absolute returns predict volatility so well?
Uppsala University, Disciplinary Domain of Humanities and Social Sciences, Faculty of Social Sciences, Department of Statistics.
2007 (English)In: Journal of Financial Econometrics, ISSN 1479-8409, E-ISSN 1479-8417, Vol. 5, no 1, 31-67 p.Article in journal (Refereed) Published
Abstract [en]

Our objective is volatility forecasting, which is core to many risk management problems. We provide theoretical explanations for (i) the empirical stylized fact recognized at least since Taylor (1986) and Ding, Granger, and Engle (1993) that absolute returns show more persistence than squared returns and (ii) the empirical finding reported in recent work by Ghysels, Santa-Clara, and Valkanov (2006) showing that realized absolute values outperform square return-based volatility measures in predicting future increments in quadratic variation. We start from a continuous time stochastic volatility model for asset returns suggested by Barndorff-Nielsen and Shephard (2001) and study the persistence and linear regression properties of various volatility-related processes either observed directly or with sampling error. We also allow for jumps in the asset return processes and investigate their impact on persistence and linear regression. Extensive empirical results complement the theoretical analysis.

Place, publisher, year, edition, pages
2007. Vol. 5, no 1, 31-67 p.
Keyword [en]
MIDAS regressions, realized variance
National Category
Economics and Business
Identifiers
URN: urn:nbn:se:uu:diva-143221DOI: 10.1093/jjfinec/nbl010ISI: 000250540200002OAI: oai:DiVA.org:uu-143221DiVA: diva2:389786
Available from: 2011-01-20 Created: 2011-01-20 Last updated: 2017-12-11Bibliographically approved

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