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Asimetrías en volatilidad, beta y contagios entre las empresas grandes y pequeñas cotizadas en la bolsa española

Author

Listed:
  • Helena Chuliá

    (Universitat Oberta de Catalunya)

  • Hipòlit Torró

    (Universidad de Valencia)

Abstract

El presente trabajo analiza la transmisión de volatilidad entre grandes y pequeñas empresas en el mercado de valores español. Para ello, se utiliza un modelo CAPM condicional GARCH-M multivariante asimétrico que, a su vez, permite contrastar la hipótesis del efecto feedback en la volatilidad. Los resultados empíricos muestran que la transmisión de volatilidad entre ambos tipos de empresas se produce después de las noticias negativas y que la hipótesis del efecto feedback puede explicar el comportamiento asimétrico de la volatilidad. Adicionalmente, se obtiene que, para evitar errores de especificación en la estimación del coeficiente beta, es necesario utilizar un modelo condicional. Estos resultados tienen un papel relevante en la valoración de activos, la gestión de carteras y el diseño de estrategias dinámicas de cobertura.

Suggested Citation

  • Helena Chuliá & Hipòlit Torró, 2007. "Asimetrías en volatilidad, beta y contagios entre las empresas grandes y pequeñas cotizadas en la bolsa española," Investigaciones Economicas, Fundación SEPI, vol. 31(3), pages 445-474, September.
    • Handle: RePEc:iec:inveco:v:31:y:2007:i:2:p:445-474
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    More about this item

    Keywords

    Volatilidad; empresas grandes y pequeñas; prima de riesgo.;
    All these keywords.

    JEL classification:

    • C12 - Mathematical and Quantitative Methods - - Econometric and Statistical Methods and Methodology: General - - - Hypothesis Testing: General
    • 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
    • G11 - Financial Economics - - General Financial Markets - - - Portfolio Choice; Investment Decisions

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