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Concentration Horizontale et Relations Verticales

  • Marie-Laure Allain

    (CECO - Laboratoire d'econometrie de l'école polytechnique - CNRS - Polytechnique - X)

  • Saïd Souam

    (CEPN - Centre d'Economie de l'Université Paris Nord (ancienne affiliation) - Université 13 - CNRS)

This paper studies horizontal mergers in vertically related markets. In a two-level Cournot model, with an intermediate and a final market, we show that downstream mergers inducing size effects are, ceteris paribus, more profitable than upstream ones. Moreover, a merger at one level reduces the incentives to merge at the other level. Endogenizing the firms' decisions to merge by considering a merger game supports the previous results.

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Paper provided by HAL in its series CEPN Working Papers with number hal-00143920.

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Date of creation: 27 Apr 2007
Date of revision:
Handle: RePEc:hal:cepnwp:hal-00143920
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  1. Lionel Janin & Benoît Menoni, 2005. "Le Contrôle des concentrations en France : Une analyse empirique des avis du Conseil de la Concurrence," Working Papers 2005-37, Centre de Recherche en Economie et Statistique.
  2. Roman Inderst & Christian Wey, 2001. "Bargaining, Mergers, and Technology Choice in Bilaterally Oligopolistic Industries," CIG Working Papers FS IV 01-19, Wissenschaftszentrum Berlin (WZB), Research Unit: Competition and Innovation (CIG).
  3. 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.
  4. Steffen Ziss, 2005. "Horizontal Mergers and Successive Oligopoly," Journal of Industry, Competition and Trade, Springer, vol. 5(2), pages 99-114, June.
  5. Henrick Horn & Asher Wolinsky, 1988. "Bilateral Monopolies and Incentives for Merger," RAND Journal of Economics, The RAND Corporation, vol. 19(3), pages 408-419, Autumn.
  6. Marie-Laure Allain & Saïd Souam, 2007. "Concentration Horizontale et Relations Verticales," CEPN Working Papers hal-00143920, HAL.
  7. Fumagalli, Chiara & Motta, Massimo, 2001. "Upstream mergers, downstream mergers, and secret vertical contracts," Research in Economics, Elsevier, vol. 55(3), pages 275-289, September.
  8. Perry, Martin K & Porter, Robert H, 1985. "Oligopoly and the Incentive for Horizontal Merger," American Economic Review, American Economic Association, vol. 75(1), pages 219-27, March.
  9. Gérard Gaudet & Ngo Van Long, 1993. "Vertical Integration, Foreclosure and Profits in the Presence of Double Marginalisation," Cahiers de recherche du Département des sciences économiques, UQAM 9308, Université du Québec à Montréal, Département des sciences économiques.
  10. 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.
  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.
  12. 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.
  13. Farrell, Joseph & Shapiro, Carl, 1990. "Horizontal Mergers: An Equilibrium Analysis," American Economic Review, American Economic Association, vol. 80(1), pages 107-26, March.
  14. Ramón Faulí-Oller, 1997. "On merger profitability in a cournot setting," Working Papers. Serie AD 1997-03, Instituto Valenciano de Investigaciones Económicas, S.A. (Ivie).
  15. Salinger, Michael A, 1988. "Vertical Mergers and Market Foreclosure," The Quarterly Journal of Economics, MIT Press, vol. 103(2), pages 345-56, May.
  16. Fauli-Oller, Ramon, 1997. "On merger profitability in a Cournot setting," Economics Letters, Elsevier, vol. 54(1), pages 75-79, January.
  17. McAfee, R Preston & Williams, Michael A, 1992. "Horizontal Mergers and Antitrust Policy," Journal of Industrial Economics, Wiley Blackwell, vol. 40(2), pages 181-87, June.
  18. Dobson, Paul W & Waterson, Michael, 1997. "Countervailing Power and Consumer Prices," Economic Journal, Royal Economic Society, vol. 107(441), pages 418-30, March.
  19. Raymond Deneckere & Carl Davidson, 1985. "Incentives to Form Coalitions with Bertrand Competition," RAND Journal of Economics, The RAND Corporation, vol. 16(4), pages 473-486, Winter.
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