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Original Articles

El comportamiento de la volatilidad intradía del futuro IBEX-35 ante la llegada de información al mercado

Intraday volatility and information arrival in the IBEX-35 futures markets

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Pages 523-540 | Received 25 Nov 2003, Accepted 03 Nov 2005, Published online: 15 Jan 2014
 

RESUMEN

Este trabajo persigue un doble objetivo. Por una parte, pretende comprobar si la volatilidad intradía del futuro sobre el IBEX-35, presenta una estructura de componentes, que nos permitiría dividir la misma en un componente transitorio o de corto plazo, y otro permanente o de largo plazo. Una vez comprobada la presencia de esta estructura, introduciremos el volumen y el número de transacciones en la ecuación de la varianza, con el fin de comprobar si la persistencia observada en la volatilidad, desaparece con la introducción de estas variables, tal y como apuntan algunos resultados anteriores. En caso afirmativo, podríamos concluir que la presencia de estos componentes está asociada a los flujos de información y que las variables escogidas son buenos indicadores de la llegada de información al mercado.

ABSTRACT

The aim of this article is to analyse if the intraday volatility of the IBEX-35 index future contract can be structured into two components: a permanent component, for the long-term, and a transitory one for the short-term. Once we have checked this structure, we introduce in the model the volume and the number of transactions in order to study the reaction of the persistence of the intraday volatility of the IBEX-35 index future contract. If such persistent behaviour disappears, the volume and the number of transactions can be labelled as good proxies for the rate of information flow. At the same time, if those two components are not significant any more, it could be said this components arise because of the information that arrives to the market.

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