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El Efecto Momentum En El Mercado Español De Acciones

Author

Listed:
  • Carlos Forner

    (Universidad de Alicante)

  • Joaquín Marhuenda

    (Universidad de Alicante)

Abstract

The momentum effect is perhaps one of the most embarrassing puzzles in the stock marketresearch nowadays. However, such phenomenon has received scarce attention in the Spanish Market.In this paper, we present a meticulous analysis of the momentum profits in this market, with specialconcern on its possible sources. Consistent with the evidence obtained in other markets, themomentum strategy yields important profits that can not be explained neither by the cross-sectiondispersion of the expected returns nor by a positive autocorrelation in the return generating factor/s.Such phenomenon seems to be driven by a positive autocorrelation in the specific return component,which seriously questions the market efficiency hypothesis. Moreover, the momentum effectevidenced in the Spanish market shows some peculiarities that make it different from the existing onein other countries. Specifically, it seems to disappear in the nineties and does not show any seasonalityin January. El efecto momentum es quizás uno de los enigmas más desconcertantes a los que se enfrenta hoy en día la investigación relativa al mercado de capitales. Sin embargo, dicho fenómeno ha acaparado escasa atención en el mercado español. En este trabajo se presenta un minucioso análisis de los beneficios del momentum en este mercado, realizando un especial hincapié en el estudio de las posibles fuentes que pueden estar ocasionándolo. Consistente con la evidencia obtenida en otros mercados, la estrategia de momentum proporciona importantes beneficios que no pueden ser explicados ni por la dispersión en la sección cruzada de las rentabilidades esperadas ni por una autocorrelación positiva en el/los factor/es que genera/n las rentabilidades. El origen de dicho fenómeno parece estar más bien en una autocorrelación positiva en el componente específico de las rentabilidades, lo cual cuestiona seriamente la hipótesis de eficiencia del mercado. Por otra parte, el efecto momentum detectado en este mercado presenta una serie de características que lo diferencian del existente en otros países, proporcionándole, en cierta medida, una entidad propia. Así, el momentum no parece persistir en la década de los noventa y tampoco presenta una estacionalidad negativa en el mes de enero.

Suggested Citation

  • Carlos Forner & Joaquín Marhuenda, 2003. "El Efecto Momentum En El Mercado Español De Acciones," Working Papers. Serie EC 2003-14, Instituto Valenciano de Investigaciones Económicas, S.A. (Ivie).
  • Handle: RePEc:ivi:wpasec:2003-14
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    File URL: http://www.ivie.es/downloads/docs/wpasec/wpasec-2003-14.pdf
    File Function: Fisrt version / Primera version, 2003
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    More about this item

    Keywords

    momentum; eficiencia del mercado; infra-reacción. momentum; market efficiency; infra-reaction.;
    All these keywords.

    JEL classification:

    • G14 - Financial Economics - - General Financial Markets - - - Information and Market Efficiency; Event Studies; Insider Trading
    • G11 - Financial Economics - - General Financial Markets - - - Portfolio Choice; Investment Decisions
    • G12 - Financial Economics - - General Financial Markets - - - Asset Pricing; Trading Volume; Bond Interest Rates

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