The Role of Correlation Dynamics in Sector Allocation

This paper assesses the economic value of modeling conditional correlations for mean–variance portfolio optimization. Using sector returns in three major markets we show that the predictability of models describing empirical regularities in correlations such as time-variation, asymmetry and structural breaks leads to significant performance gains over the static covariance strategy. Investors would be willing to pay a fee of up to 983 basis points to switch from the static to the dynamic correlation portfolio and about 100 basis points more for capturing asymmetries and shifts in correlations. The gains are robust to the crisis, transaction costs and are most pronounced for monthly rebalancing.

[1]  E. Fama,et al.  The Equity Premium , 2001 .

[2]  G. Geoffrey Booth,et al.  Asymmetric volatility transmission in international stock markets , 1995 .

[3]  Timothy E. Jares,et al.  Japan and Hong Kong Exchange-Traded Funds (ETFs): Discounts, Returns, and Trading Strategies , 2004 .

[4]  Welch Bl.  THE GENERALIZATION OF ‘STUDENT'S’ PROBLEM WHEN SEVERAL DIFFERENT POPULATION VARLANCES ARE INVOLVED , 1947 .

[5]  Anat R. Admati,et al.  A Theory of Intraday Patterns: Volume and Price Variability , 1988 .

[6]  William N. Goetzmann,et al.  Long-Term Global Market Correlations , 2001 .

[7]  Chris Kirby,et al.  It’s All in the Timing: Simple Active Portfolio Strategies that Outperform Naïve Diversification , 2010, Journal of Financial and Quantitative Analysis.

[8]  M. Blume,et al.  The Demand for Risky Assets , 1975 .

[9]  Lieven Baele.  Volatility Spillover Effects in European Equity Markets , 2004, Journal of Financial and Quantitative Analysis.

[10]  Ronald W. Masulis,et al.  Correlations in Price Changes and Volatility Across International Stock Markets , 1990 .

[11]  J. Wooldridge,et al.  Quasi-maximum likelihood estimation and inference in dynamic models with time-varying covariances , 1992 .

[12]  Chris Kirby,et al.  The Economic Value of Volatility Timing , 2000 .

[13]  R. Engle,et al.  Asymmetric Dynamics in the Correlations of Global Equity and Bond Returns , 2003, SSRN Electronic Journal.

[14]  Thierry Foucault,et al.  Order flow composition and trading costs in a dynamic limit order market 1 I am grateful to Bruno Bi , 1999 .

[15]  Susan M. Mangiero.  International Momentum Strategies , 1998 .

[16]  K. West,et al.  A Utility Based Comparison of Some Models of Exchange Rate Volatility , 1992 .

[17]  Riccardo Colacito,et al.  Testing and Valuing Dynamic Correlations for Asset Allocation , 2005 .

[18]  Monica Billio,et al.  Volatility and shocks spillover before and after EMU in European stock markets , 2003 .

[19]  Guojun Wu,et al.  Asymmetric Volatility and Risk in Equity Markets , 1997 .

[20]  Brenda González-Hermosillo,et al.  Investors Risk Appetite and Global Financial Market Conditions , 2008, SSRN Electronic Journal.

[21]  John Douglas Opdyke,et al.  Comparing Sharpe ratios: So where are the p-values? , 2007 .

[22]  Kate Phylaktis,et al.  Equity Market Comovement and Contagion: A Sectoral Perspective , 2006 .

[23]  Yufeng Han,et al.  Asset Allocation with a High Dimensional Latent Factor Stochastic Volatility Model , 2005 .

[24]  Chris Kirby,et al.  The Economic Value of Volatility Timing Using 'Realized' Volatility , 2001 .

[25]  Todd E. Clark,et al.  Tests of Equal Forecast Accuracy and Encompassing for Nested Models , 1999 .

[26]  John Y. Campbell,et al.  No News is Good News: An Asymmetric Model of Changing Volatility in Stock Returns , 1991 .

[27]  Victor DeMiguel,et al.  Optimal Versus Naive Diversification: How Inefficient is the 1/N Portfolio Strategy? , 2009 .

[28]  K. Kroner,et al.  Modeling Asymmetric Comovements of Asset Returns , 1998 .

[29]  T. Bollerslev,et al.  Modelling the Coherence in Short-run Nominal Exchange Rates: A Multivariate Generalized ARCH Model , 1990 .

[30]  Lucio Sarno,et al.  An Economic Evaluation of Empirical Exchange Rate Models , 2009 .

[31]  R. Engle,et al.  Multivariate Simultaneous Generalized ARCH , 1995, Econometric Theory.

[32]  Chris Kirby,et al.  The economic value of volatility timing using “realized” volatility ☆ , 2003 .

[33]  Thomas H. McInish,et al.  An Analysis of Intraday Patterns in Bid/Ask Spreads for NYSE Stocks , 1992 .

[34]  Sean P. Baca,et al.  The Rise of Sector Effects in Major Equity Markets , 2000 .

[35]  Daniel B. Nelson.  CONDITIONAL HETEROSKEDASTICITY IN ASSET RETURNS: A NEW APPROACH , 1991 .

[36]  Andrew Ang,et al.  International Asset Allocation With Regime Shifts , 2002 .

[37]  F. Longin,et al.  Extreme Correlation of International Equity Markets , 2000 .