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Original Articles

¿Es el efecto momentum exclusivo de empresas insolventes?

Is the momentum effect exclusive of high default risk firms?

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Pages 445-476 | Received 29 May 2009, Accepted 30 Mar 2010, Published online: 15 Jan 2014
 

RESUMEN

El artículo analiza el papel del riesgo de insolvencia en la explicación del efecto momentum. De acuerdo con la evidencia reciente, se ha encontrado que el efecto momentum es mayor entre las empresas con alto nivel de insolvencia. Sin embargo, las carteras neutrales al riesgo de insolvencia muestran rentabilidades similares a las carteras de momentum ordinarias, por lo que no podemos concluir que los beneficios de las estrategias de momentum obedezcan a una compensación por el riesgo de insolvencia. Por último, aunque el riesgo de insolvencia es una característica importante de las carteras de momentum, no es la única característica relevante puesto que hemos detectado efecto momentum significativo en empresas de pequeño tamaño independientemente de su nivel de insolvencia.

ABSTRACT

This paper examines the role that plays the default risk in the explanation of the momentum effect. According to recent literature, we have found that momentum effect is large and significant among high default-risk firms. Nevertheless, the default risk-neutral portfolios exhibit a similar return than momentum portfolios, so we cannot conclude that momentum profits are a compensation for default risk. Finally, although default risk is an important characteristic of momentum portfolios, it is not the only relevant characteristic since we have found a significant momentum effect in small size firms irrespective of their default risk.

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