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Resumen
El objetivo del presente trabajo es medir el grado de eficiencia del mercado bursátil chileno en el período 2001-2018. Se utiliza la metodología de estudio de eventos (event studies) para comprobar la eficiencia en forma semifuerte del mercado de acciones en Chile, por medio de anuncios de adquisiciones y de fusiones realizados por las empresas componentes del Índice de Precios Selectivo de Acciones (IPSA), de la Bolsa de Comercio de Santiago de Chile. Dicha metodología es la apropiada para medir este tipo de eficiencia. Específicamente, se usan datos diarios y se aplica el modelo de mercado como modelo generador de retornos. Los resultados muestran que el mercado de acciones no se comporta de manera eficiente en forma semifuerte en ese período.
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