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Increased Correlation in Bear markets: A Downside Risk Perspective

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  • Campbell, Rachel
  • Koedijk, Kees
  • Kofman, Paul

Abstract

A number of studies have provided evidence of increased correlation in global financial market returns during bear markets. Others, however, have shown that some of this evidence may have been biased. We derive an alternative estimator for implied correlation based on portfolio downside risk measures that does not suffer from this bias. These unbiased quantile correlation estimates are directly applicable to portfolio optimization and to risk management techniques in general. This simple and practical approach captures the increasing correlation in extreme market conditions while providing a pragmatic approach to understanding correlation structure in multivariate return distributions. Based on data for international equity markets we find evidence of significant increased correlation in extreme returns in international equity markets. This proves the importance of providing a tail adjusted mean-variance covariance matrix.

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Bibliographic Info

Paper provided by C.E.P.R. Discussion Papers in its series CEPR Discussion Papers with number 3172.

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Date of creation: Jan 2002
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Handle: RePEc:cpr:ceprdp:3172

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Keywords: correlation; downside risk; extreme returns; international equity markets;

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Cited by:
  1. Klaus Grobys, 2011. "Are Different National Stock Markets Driven by the Same Stochastic Hidden Variable?," The Review of Finance and Banking, Academia de Studii Economice din Bucuresti, Romania / Facultatea de Finante, Asigurari, Banci si Burse de Valori / Catedra de Finante, vol. 3(1), pages 021-030, June.
  2. Syriopoulos, Theodore, 2007. "Dynamic linkages between emerging European and developed stock markets: Has the EMU any impact?," International Review of Financial Analysis, Elsevier, vol. 16(1), pages 41-60.
  3. Silvo Dajčman, 2013. "Interdependence Between Some Major European Stock Markets - A Wavelet Lead/Lag Analysis," Prague Economic Papers, University of Economics, Prague, vol. 2013(1), pages 28-49.
  4. Peter Christoffersen & Hugues Langlois, 2011. "The Joint Dynamics of Equity Market Factors," CREATES Research Papers 2011-45, School of Economics and Management, University of Aarhus.
  5. Numan Ülkü, 2011. "Modeling Comovement among Emerging Stock Markets: The Case of Budapest and Istanbul," Czech Journal of Economics and Finance (Finance a uver), Charles University Prague, Faculty of Social Sciences, vol. 61(3), pages 277-304, July.
  6. Christian Schlag & Nicole Branger, 2004. "Why is the index smile so steep?," Money Macro and Finance (MMF) Research Group Conference 2003 84, Money Macro and Finance Research Group.
  7. John Knight & Colin Lizieri & Stephen Satchell, 2005. "Diversification When It Hurts? The Joint Distributions of Real Estate and Equity Markets," Real Estate & Planning Working Papers rep-wp2005-16, Henley Business School, Reading University.
  8. Voronkova, Svitlana, 2004. "Equity market integration in Central European emerging markets: A cointegration analysis with shifting regimes," International Review of Financial Analysis, Elsevier, vol. 13(5), pages 633-647.
  9. Immanuel Seidl, 2012. "Markowitz versus Regime Switching: An Empirical Approach," The Review of Finance and Banking, Academia de Studii Economice din Bucuresti, Romania / Facultatea de Finante, Asigurari, Banci si Burse de Valori / Catedra de Finante, vol. 4(1), pages 033-043, June.

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