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Concentration Horizontale et Relations Verticales

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Author Info
Marie-Laure Allain (LEEP - Laboratoire d'econometrie de l'école polytechnique - CNRS : UMR7657 - Polytechnique - X)
Saïd Souam (CEPN - Centre d'économie de l'Université de Paris Nord - CNRS : UMR7115 - Université Paris-Nord - Paris XIII)

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Abstract

Cet article s'intéresse aux concentrations horizontales dans des marchés reliés verticalement. Dans un modèle de concurrence à la Cournot à deux niveaux, où les transactions se font par l'intermédiaire d'un marché, on montre que des fusions horizontales engendrant des effets de taille sont, toutes choses égales par ailleurs, plus profitables en aval qu'en amont. De plus, la concentration dans un secteur réduit les incitations à la fusion dans l'autre secteur. L'endogénéisation des décisions de fusion conserve ces résultats.

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Paper provided by HAL in its series Pre- and Post-Print documents with number hal-00143920_v1.

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Date of creation: 27 Apr 2007
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Handle: RePEc:hal:papers:hal-00143920_v1

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Keywords: fusions horizontales relations verticales contrôle des concentrations.

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  4. Géarard Gaudet & Ngo Long, 1996. "Vertical Integration, Foreclosure, and profits in the Presence of Double Marginalization," Journal of Economics & Management Strategy, Blackwell Publishing, vol. 5(3), pages 409-432, 09. [Downloadable!] (restricted)
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  5. Salant, Stephen W & Switzer, Sheldon & Reynolds, Robert J, 1983. "Losses from Horizontal Merger: The Effects of an Exogenous Change in Industry Structure on Cournot-Nash Equilibrium," The Quarterly Journal of Economics, MIT Press, vol. 98(2), pages 185-99, May. [Downloadable!] (restricted)
  6. Bonaccorsi, Andrea & Giuri, Paola, 2001. "The long-term evolution of vertically-related industries," International Journal of Industrial Organization, Elsevier, vol. 19(7), pages 1053-1083, July. [Downloadable!] (restricted)
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  7. Inderst, Roman & Wey, Christian, 2003. " Bargaining, Mergers, and Technology Choice in Bilaterally Oligopolistic Industries," RAND Journal of Economics, The RAND Corporation, vol. 34(1), pages 1-19, Spring.
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  8. Gaudet, Gerard & Salant, Stephen W., 1992. "Mergers of producers of perfect complements competing in price," Economics Letters, Elsevier, vol. 39(3), pages 359-364, July. [Downloadable!] (restricted)
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  10. Farrell, Joseph & Shapiro, Carl, 1990. "Horizontal Mergers: An Equilibrium Analysis," American Economic Review, American Economic Association, vol. 80(1), pages 107-26, March. [Downloadable!] (restricted)
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  11. Kamien, Morton I & Zang, Israel, 1990. "The Limits of Monopolization through Acquisition," The Quarterly Journal of Economics, MIT Press, vol. 105(2), pages 465-99, May. [Downloadable!] (restricted)
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  12. Salinger, Michael A, 1988. "Vertical Mergers and Market Foreclosure," The Quarterly Journal of Economics, MIT Press, vol. 103(2), pages 345-56, May. [Downloadable!] (restricted)
  13. Dobson, Paul W & Waterson, Michael, 1997. "Countervailing Power and Consumer Prices," Economic Journal, Royal Economic Society, vol. 107(441), pages 418-30, March. [Downloadable!] (restricted)
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  15. Fumagalli, Chiara & Motta, Massimo, 2001. "Upstream mergers, downstream mergers, and secret vertical contracts," Research in Economics, Elsevier, vol. 55(3), pages 275-289, September. [Downloadable!] (restricted)
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  16. Fauli-Oller, Ramon, 1997. "On merger profitability in a Cournot setting," Economics Letters, Elsevier, vol. 54(1), pages 75-79, January. [Downloadable!] (restricted)
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