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Original Articles

Momentum: características y estabilidad temporal. Resultados para la bolsa españolan

Momentum: characteristics and time-stability. Some evidence for the Spanish stock market

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Pages 597-620 | Received 01 Jun 2004, Accepted 14 Dec 2005, Published online: 15 Jan 2014
 

RESUMEN

En este trabajo se ha contrastado el efecto momentum en el mercado de valores español para el período 1991–2004. Los resultados han revelado que existe un efecto momentum. Sin embargo, éste desaparece con la crisis de 1997. Los beneficios del momentum se han asociado con el tamaño y la rotación, aunque ninguno de estos factores ha resultado determinante en la explicación de dicho efecto. Tampoco el efecto cambio de año ha ofrecido capacidad explicativa, ni en el efecto momentum ni en su desaparición. En cambio, se ha mostrado que el comportamiento de la cartera ganadora y, en especial, de ganadores de pequeño tamaño y alta rotación, resulta esencial en la explicación de esta cuestión.

ABSTRACT

This paper tests the momentum effect in the Spanish stock market for the period 1991–2004. Though evidence of momentum is found, it fades after the 1997 crisis. A link is observed between momentum profits and both size and turnover, neither of which proves determinant. The turn of the year effect is also unable to explain either the presence or the disappearance of momentum in stock returns. The behaviour of the winner portfolio, however, particularly when formed by small size, high turnover winners, plays a fundamental role in explaining this puzzle.

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