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Économies d’échelle et de gamme dans les coopératives de services financiers : une approche non paramétrique (DEA)

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  • Mario Fortin

    ()
    (GREDI, Département d'économique, Université de Sherbrooke)

  • Andre Leclerc

    ()
    (Secteur sciences humaines, Université de Moncton, campus d’Edmundston)

Abstract

Lorsque des économies d’échelle et de gamme sont simultanément présentes, le regroupement des établissements tend à réduire les coûts. De nombreuses études empiriques ont déjà établi qu’au-delà d’une certaine taille, les coûts des banques tendent à devenir proportionnels. Il y aurait donc une limite à ces économies d’échelle et de gamme. Nous vérifions si l’important processus de fusions des caisses Desjardins du Québec et des caisses acadiennes entrepris en 1998 les a poussées au-delà de leur seuil minimal d’efficacité. Une analyse par lissage exponentiel montre que le coût moyen d’opération cesse de diminuer lorsque l’actif des caisses atteint 250 millions de dollars. Nous procédons à une estimation formelle de cette conclusion à l’aide de la méthode du Data Envelopment Analysis (DEA). Notre estimation combine les méthodes maintenant bien connues pour calculer l’efficacité d’échelle avec le DEA à un résultat de Fortin et Leclerc (2006) montrant que les économies de gamme peuvent se décomposer en efficacité d’échelle et en une mesure de convexité de la fonction de production. Nos montrons que la plupart des fusions ont amené la caisse fusionnée à une taille telle qu’elle se situe en situation de rendement d’échelle décroissant. La recherche de la taille optimale ne semble donc pas être la première préoccupation dans la décision de fusion.

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File URL: http://gredi.recherche.usherbrooke.ca/wpapers/GREDI-0908.pdf
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Bibliographic Info

Paper provided by Departement d'Economique de la Faculte d'administration à l'Universite de Sherbrooke in its series Cahiers de recherche with number 09-08.

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Length: 23 pages
Date of creation: 2009
Date of revision:
Handle: RePEc:shr:wpaper:09-08

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Keywords: Scale efficiency; mergers; banking; DEA;

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  1. Mitchell, Karlyn & Onvural, Nur M, 1996. "Economies of Scale and Scope at Large Commercial Banks: Evidence from the Fourier Flexible Functional Form," Journal of Money, Credit and Banking, Blackwell Publishing, vol. 28(2), pages 178-99, May.
  2. Evan Kraft & Richard Hofler & James Payne, 2006. "Privatization, foreign bank entry and bank efficiency in Croatia: a Fourier-flexible function stochastic cost frontier analysis," Applied Economics, Taylor & Francis Journals, vol. 38(17), pages 2075-2088.
  3. Mario Fortin & André Leclerc, 2006. "An Output Orientated Non Parametric Measure of Economies of Scope," Cahiers de recherche 06-22, Departement d'Economique de la Faculte d'administration à l'Universite de Sherbrooke.
  4. Berger, Allen N. & Mester, Loretta J., 1997. "Inside the black box: What explains differences in the efficiencies of financial institutions?," Journal of Banking & Finance, Elsevier, vol. 21(7), pages 895-947, July.
  5. Amel, Dean & Barnes, Colleen & Panetta, Fabio & Salleo, Carmelo, 2004. "Consolidation and efficiency in the financial sector: A review of the international evidence," Journal of Banking & Finance, Elsevier, vol. 28(10), pages 2493-2519, October.
  6. Charnes, A. & Cooper, W. W. & Rhodes, E., 1978. "Measuring the efficiency of decision making units," European Journal of Operational Research, Elsevier, vol. 2(6), pages 429-444, November.
  7. Jason Allen & Ying Liu, 2007. "Efficiency and economies of scale of large Canadian banks," Canadian Journal of Economics, Canadian Economics Association, vol. 40(1), pages 225-244, February.
  8. Mario Fortin & Andre Leclerc, 2007. "Should we Abandon the Intermediation Approach for Analyzing Banking Performance?," Cahiers de recherche 07-01, Departement d'Economique de la Faculte d'administration à l'Universite de Sherbrooke.
  9. James McIntosh, 2002. "A welfare analysis of Canadian chartered bank mergers," Canadian Journal of Economics, Canadian Economics Association, vol. 35(3), pages 457-475, August.
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