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24-Hour realized volatilities and transatlantic volatility interdependence

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  • Robert Maderitsch

Abstract

This paper proposes an innovative econometric approach for the computation of 24-h realized volatilities across stock markets in Europe and the US. In particular, we deal with the problem of non-synchronous trading hours and intermittent high-frequency data during overnight non-trading periods. Using high-frequency data for the Euro Stoxx 50 and the S&P 500 Index between 2003 and 2011, we combine squared overnight returns and realized daytime variances to obtain synchronous 24-h realized volatilities for both markets. Specifically, we use a piece-wise weighting procedure for daytime and overnight information to take into account structural breaks in the relation between the two. To demonstrate the new possibilities that our approach opens up, we use the new 24-h volatilities to estimate a bivariate extension of Corsi et al.’s [Econom. Rev., 2008, 27(1–3), 46–78] HAR-GARCH model. The results suggest that the contemporaneous transatlantic volatility interdependence is remarkably stable over the sample period.

Suggested Citation

  • Robert Maderitsch, 2017. "24-Hour realized volatilities and transatlantic volatility interdependence," Quantitative Finance, Taylor & Francis Journals, vol. 17(3), pages 423-435, March.
    • Handle: RePEc:taf:quantf:v:17:y:2017:i:3:p:423-435
    DOI: 10.1080/14697688.2016.1206958
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