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Detecting exchange rate contagion using copula functions

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We study exchange rate dependencies between seven countries from four different regions of the world. Our sample includes two developed countries, the United Kingdom and Germany (representing the Euro Area), two large emerging Asian economies, South Korea and Indonesia, two Latin American countries, Brazil and Chile, and South Africa. The currencies of all of these countries are actively traded in global forex markets and all of them are important for large international portfolio composition and rebalancing. We construct multivariate copula functions using a regular vine copula approach, allowing for very flexible dependency structures. We find evidence of exchange rate contagion for our set of countries. However, important asymmetries are worth noting. First, contagion occurs only during periods of exchange rate appreciation of the different currencies with respect to the United States Dollar. We do not find evidence of contagion for any pair of exchange rates during periods of currency depreciations. Second, contagion is more frequent in pairs of countries that include either the United Kingdom or Germany. In fact, the largest tail dependence coefficient corresponds to the pair composed by these two countries’ exchange rates. Third, contagion occurs more within countries of a same region, for instance, between Brazil and Chile, and between Korea and Indonesia. This result shows that, in episodes of large currency appreciation, hedging strategies for global investors taking positions in large markets require regional diversification. **** RESUMEN: En el presente trabajo estudiamos las dependencias en tasas de cambio entre siete países de cuatro diferentes regiones del mundo. Nuestra muestra incluye dos países desarrollados, el Reino Unido y Alemania (representando la zona Euro), dos economías emergentes asiáticas, Corea del Sur e Indonesia, dos países latinoamericanos, Brasil y Chile, y Sudáfrica. Las divisas de estos países se cotizan activamente en el mercado global, todas ellas son importantes para la composición y rebalanceo del portafolio internacional. Construimos funciones de copula multivariadas usando una metodología Regular Vine, que permite modelar estructuras de dependencia muy flexibles. Encontramos evidencia de contagio en tasas de cambio para nuestra muestra. Sin embargo, hay asimetrías importantes que se deben tener en cuenta. En primer lugar, el contagio ocurre sólo durante periodos de apreciación de las distintas divisas frente al dólar estadounidense. No encontramos evidencia de contagio durante periodos de depreciación cambiaria. En segundo lugar, el contagio es más frecuente en países que incluyen el Reino Unido y Alemania. El coeficiente de cola más alto corresponde a esta pareja de países. En tercer lugar, el contagio es más frecuente dentro de países de la misma región, por ejemplo, entre Brasil y Chile, y entre Corea e Indonesia. Este resultado muestra que, en episodios de grandes apreciaciones, las estrategias de cobertura para inversionistas globales con posiciones en grandes mercados requieren diversificación regional.

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  • Juan Sebastian Cubillos-Rocha & Jose Eduardo Gomez-Gonzalez & Luis Fernando Melo-Velandia, 2018. "Detecting exchange rate contagion using copula functions," Borradores de Economia 1047, Banco de la Republica de Colombia.
  • Handle: RePEc:bdr:borrec:1047
    DOI: 10.32468/be.1047
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    4. Wang, Haiying & Yuan, Ying & Li, Yiou & Wang, Xunhong, 2021. "Financial contagion and contagion channels in the forex market: A new approach via the dynamic mixture copula-extreme value theory," Economic Modelling, Elsevier, vol. 94(C), pages 401-414.
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    9. Benkraiem, Ramzi & Garfatta, Riadh & Lakhal, Faten & Zorgati, Imen, 2022. "Financial contagion intensity during the COVID-19 outbreak: A copula approach," International Review of Financial Analysis, Elsevier, vol. 81(C).
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    More about this item

    Keywords

    Copula functions; Exchange rate contagion; Emerging and developed economies; Funciones copula; Contagio en tasas de cambio; Economías desarrolladas y emergentes;
    All these keywords.

    JEL classification:

    • C32 - Mathematical and Quantitative Methods - - Multiple or Simultaneous Equation Models; Multiple Variables - - - Time-Series Models; Dynamic Quantile Regressions; Dynamic Treatment Effect Models; Diffusion Processes; State Space Models
    • C51 - Mathematical and Quantitative Methods - - Econometric Modeling - - - Model Construction and Estimation
    • E42 - Macroeconomics and Monetary Economics - - Money and Interest Rates - - - Monetary Sytsems; Standards; Regimes; Government and the Monetary System

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