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Original Articles

Generadores de comportamiento imitador en el mercado de valores español

Herding behaviour generators in the Spanish stock market

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Pages 265-291 | Received 07 Jul 2008, Accepted 20 Jan 2009, Published online: 15 Jan 2014
 

RESUMEN

El objetivo del presente trabajo es analizar si algunas características propias de los títulos se encuentran relacionadas con el comportamiento gregario y si es posible localizar este ũltimo en un segmento de títulos concreto. Partiendo de datos de frecuencia intradiaria del mercado de capitales español entre 1997 y 2003, se calcula la medida de la intensidad de imitación propuesta por Patterson y Sharma (2006) y se estudian las variaciones en la intensidad de la imitación en función de ciertas características de los títulos (capitalización o tamaño, turnover, book-to-market, liquidez y sector). Se obtienen indicios favorables a la existencia de una relación significativa y por tanto de una predecibilidad potencial de los precios que se intenta explotar mediante una estrategia de inversión aplicada a aquellos activos con características más relacionadas con un alto nivel de comportamiento mimético.

ABSTRACT

This paper tries to provide useful information on the herding effect studying some market characteristics that the financial literature has related with the presence of imitative behaviour. Our empirical design starts from the herding measure proposed by Patterson and Sharma (2006). We construct different stock portfolios according to size, turnover, book to market ratio, activity sector and liquidity. We analyze how herding intensity varies depending on changes of these variables. Our results show a significant relation among the herding intensity and the variables under study. Finally, we explore the usefulness of an investment strategy designed for those stocks attracting imitative behaviour according to the results found on the variables analyzed.

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