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Original Articles

Concentración en el Mercado de Auditoría en España: Análisis Empírico del Período 1990–2000

Concentration in the Spanish Audit Market: An Empirical Analysis (1990–2000)

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Pages 423-457 | Received 01 Oct 2003, Accepted 17 Jun 2004, Published online: 15 Jan 2014
 

RESUMEN

El objetivo de este trabajo es examinar la estructura del mercado de auditoría en España durante el período 1990–2000. A tal fin hemos calculado distintas medidas de concentración utilizando una muestra de 5.510 informes de auditoría de empresas registradas en la Comisión Nacional del Mercado de Valores. Los resultados indican que el mercado de auditoría español presenta una estructura oligopolística con claro dominio de las Grandes Firmas. Aunque en el período 1990–1995 se produce una ligera reducción de la concentración, a partir de 1995 los índices de concentración de mercado han seguido vina trayectoria creciente. El estudio discute las posibles razones de los niveles de concentración así como algunas consecuencias de la fusión de Andersen y Deloitte & Touche. Por último, los resultados obtenidos se han comparado con otros estudios previos sobre el mercado español y con investigaciones realizadas en el ámbito internacional.

ABSTRACT

This paper examines the structure of the Spanish audit market during the period 1990 to 2000. Measures of market concentration were calculated based on a sample of 5,510 audit reports of companies listed in the Comisión Nacional del Mercado de Valores. According to our results, the Spanish audit market has the typical characteristics of an oligopoly where Big Firms clearly dominate the market, in particular Arthur Andersen, which was by far the leader of the audit market. Concentration ratios show a minor decrease from 1990 to 1995. Since 1995, however, measures show a consistent increase in concentration. The paper explores in detail the trend in concentration measures. Additionally, the results are compared to previous studies on the Spanish audit market structure and via inter-country comparisons.

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