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Title: The shifting dependence dynamics between the G7 stock markets
Authors: BenSaïda, Ahmed
Sabri, Boubaker
Nguyen, Duc Khuong
Keywords: Financial co-movement;Regime-switching;Vine copula;Multivariate Student’s t JEL Classification: G15, C34, C58
Issue Date: 2017
Publisher: Quantitative Finance
Abstract: The growing interdependence between financial markets has attracted special attention from academic researchers and finance practitioners for the purpose of optimal portfolio design and contagion analysis. This article develops a tractable regime-switching version of the copula functions to model the intermarkets linkages during turmoil and normal periods, while taking into account structural changes. More precisely, Markov regime-switching C-vine and D-vine decompositions of the Student’s t copula are proposed and applied to returns on diversified portfolios of stocks, represented by the G7 stock market indices. The empirical results show evidence of regime shifts in the dependence structure with high contagion risk during crisis periods. Moreover, both the C- and D-vines highly outperform the multivariate Student’s t copula, which suggests that the shock transmission path is as important as the dependence itself, and is better detected with a vine copula decomposition.
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