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- ¿Existe En El Mercado Español Un Efecto Sobre-Reacción?

Author

Listed:
  • Carlos Forner

    (Universidad de Alicante)

  • Joaquín Marhuenda

    (Universidad de Alicante)

Abstract

Several studies have shown that the contrarian strategy, or the forming of a zeroinvestmentportfolio that buys the stocks that have performed poorly in the past (losers) andsells those that have performed well (winners), creates abnormally positive returns in thefuture. Many hypotheses have been suggested in an attempt to explain such strange behaviorby the market, but the most widely discussed is the so-called overreaction effect. In this paperwe analyze the contrarian strategy, in the empirical context of the Spanish stock market,using three-year periods, not only to form the portfolios of winners and losers, but also toanalyze the future performance of the stocks involved We follow the methodologies proposedby De Bondt and Thaler (1985) and Chan (1988), and we arrive at the conclusion that, withthe use of three-year periods, the contrarian strategy does not beat the market and, therefore,no overreaction effect is observed in the Spanish market. Numerosos estudios han puesto de manifiesto que la estrategia contraria, consistente enconstruir una cartera de arbitraje que compra los títulos que peor se han comportado en elpasado (perdedores) y vende los que mejor lo han hecho (ganadores), proporciona rentabilidadesanormalmente positivas en el futuro. Varias hipótesis se han barajado a la hora de explicar estecomportamiento anómalo del mercado; la más conocida, y también discutida, es el llamadoefecto sobre-reacción. En este trabajo analizamos la estrategia contraria en el mercadoespañol utilizando periodos de tres años, tanto para determinar la cartera de perdedores y deganadores como para analizar su comportamiento futuro. Para ello nos apoyamos en lametodología propuesta por De Bondt y Thaler (1985) y Chan (1988), llegando a la conclusión deque utilizando periodos de tres años la estrategia contraria no bate al mercado y, por lo tanto,no se observa sobre-reacción.

Suggested Citation

  • Carlos Forner & Joaquín Marhuenda, 1999. "- ¿Existe En El Mercado Español Un Efecto Sobre-Reacción?," Working Papers. Serie EC 1999-21, Instituto Valenciano de Investigaciones Económicas, S.A. (Ivie).
  • Handle: RePEc:ivi:wpasec:1999-21
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    File URL: http://www.ivie.es/downloads/docs/wpasec/wpasec-1999-21.pdf
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