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Análisis de la volatibilidad del IGBC en época de crisis (2005-2006)

Author

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  • Alejandro Rodríguez Restrepo

Abstract

Este trabajo investiga el comportamiento de la volatilidad del mercado accionario colombiano en el periodo de crisis evidenciado en el segundo trimestre de 2006. Para medir esa volatilidad se utilizaron modelos de heterocedasticidad condicional autorregresivos y sus extensiones, como el modelo exponencial y Threshold. Los resultados del estudio mostraron que en los momentos de mayor crisis, la volatilidad aumentó y se concentró, disminuyendo el rendimiento del mercado. A su vez, se observa la presencia de efecto Leverage en los rendimientos del IGBC y por último se evidencia la presencia de asimetrías en la volatilidad de los rendimientos ante impactos negativos y positivos, produciéndose una mayor dependencia del mercado ante impactos negativos. Al comparar los valores de máxima verosimilitud en los modelos, se observó que los modelos asimétricos EGARCH (1,1) y TGARCH (1,1) capturaron mejor los impactos en los rendimientos que el modelo simétrico GARCH (1,1).

Suggested Citation

  • Alejandro Rodríguez Restrepo, 2009. "Análisis de la volatibilidad del IGBC en época de crisis (2005-2006)," Revista de Economía y Administración, Universidad Autónoma de Occidente, February.
  • Handle: RePEc:col:000156:005280
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    More about this item

    Keywords

    Crisis; Mercado accionario Colombiano; Volatilidad; ARCH; GARCH; EGARCH.;
    All these keywords.

    JEL classification:

    • C59 - Mathematical and Quantitative Methods - - Econometric Modeling - - - Other
    • G14 - Financial Economics - - General Financial Markets - - - Information and Market Efficiency; Event Studies; Insider Trading

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