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Original Articles

Rendimientos estacionales en la Bolsa española: Importancia del tamaño de la empresa

Return seasonality in the Spanish stock market: The importance of the size of the firm

Pages 527-540 | Received 09 Jul 2007, Accepted 27 Nov 2008, Published online: 15 Jan 2014
 

RESUMEN

Este trabajo investiga la existencia de anomalías de calendario en el mercado de valores español durante el período Enero de 1995-Mayo de 2006. A diferencia de los trabajos anteriores existentes para el caso español que investigan una única anomalía, la consideración simultánea de las más importantes proporciona resultados más robustos, al minimizar la probabilidad de obtener regularidades puramente espurias. La utilización de los índices IBEX-35 e IBEX-Small caps permite, por un lado, constatar la existencia de comportamientos diferenciales dependiendo del tamaño de la empresa y, por otro, supone una prevención importante ante posibles problemas de data mining. Los resultados obtenido muestran la existencia de importantes regularidades empíricas de calendario durante el período investigado en el IBEX-35 y, sobretodo en el IBEX-Small caps.

ABSTRACT

This paper investigates the most important calendar anomalies in the Spanish stock market during the period January 1995-May 2006. Unlike previous research on the Spanish case that tended to focus on a single anomaly, we have investigated all the most important calendar anomalies simultaneously. Such an approach minimizes the probability of obtaining purely spurious anomalies, therefore providing more robust results. The use of IBEX-35 and IBEX-Small caps indexes allows for both, the assessment of different behaviors depending on the size of the firm and the prevention of potential data mining problems. Our results show serious calendar anomalies in IBEX-35 and mostly in IBEX-Small caps during the period under research.

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