Concentration et compétitivité du marché de l'audit en France:une étude longitudinale 1997-2003

Charles Piot ()
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Charles Piot: Université de Grenoble 2

Revue Finance Contrôle Stratégie, 2008, vol. 11, issue 4, 31-63

Abstract: (VF) Cet article étudie la concentration et l'intensité concurrentielle du marché de l'audit français dans la phase de regroupements des Big Six aux Big Four, suite aux critiques de «cartélisation» souvent formulées. Les mesures portent sur l'ensemble des sociétés cotées fin 1997 et fin 2003, ainsi que sur une segmentation sectorielle de ce marché. Il ressort que la concentration s'est logiquement accrue, globalement et dans la plupart des secteurs. À l'instar des pays anglo-saxons, les ratios de concentration montrent une tendance vers l'oligopole restreint, confirmée par les indices de Linda qui suggèrent un resserrement, dans cette période, de huit à cinq firmes d'audit dotées d'un poids significatif. Toutefois, les indices de Herfindahl suggèrent que l'intensité concurrentielle demeure vive entre les grandes firmes d'audit, et que le marché reste concurrentiel par les prix fin 2003.(VA)Following growing critics of "cartelization", this paper investigates the concentration and competitiveness of the French audit market during the Big Six to Big Four merger period. Concentration is measured for the whole population of listed companics at the end of 1997 and 2003, and within industry segments. It appears that concentration has logically increased, overall, and in most of the industry segments. As observed on Anglo-Saxon markets, concentration ratios characterize a closed oligopoly , which is confirmed by Linda indices showing that the market has reduced from eight to five audit firms with significant market power. However, Herfindahl indices suggest that competition remains fierce between the larger audit firms, and that the whole market is still price competitive by the end of 2003.

Keywords: concentration; compétitivité; marché de l'audit; Big Six/Four; fusions de cabinets; competitiveness; audit market; auditor mergers. (search for similar items in EconPapers)
JEL-codes: L13 M42 (search for similar items in EconPapers)
Date: 2008
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Persistent link: https://EconPapers.repec.org/RePEc:dij:revfcs:v:11:y:2008:i:q4:p:31-63

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