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An equilibrium analysis of efficiency gains from mergers

  • Jovanovic, Dragan
  • Wey, Christian

We analyze the efficiency defense in merger control. First, we show that the relationship between exogenous efficiency gains and social welfare can be non-monotone. Second, we consider both endogenous mergers and endogenous efficiencies and find that merger proposals are largely aligned with a proper social welfare analysis which explicitly considers the without merger counterfactual. We demonstrate that the merger specificity requirement does not help much to select socially desirable mergers; to the contrary, it may frustrate desirable mergers inducing firms not to claim efficiencies at all.

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Paper provided by Düsseldorf Institute for Competition Economics (DICE), University of Düsseldorf in its series DICE Discussion Papers with number 64.

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Date of creation: 2012
Handle: RePEc:zbw:dicedp:64
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  1. Farrell, Joseph & Shapiro, Carl, 2000. "Scale Economies and Synergies in Horizontal Merger Analysis," Competition Policy Center, Working Paper Series qt8v1500b8, Competition Policy Center, Institute for Business and Economic Research, UC Berkeley.
  2. Neven, Damien J & Röller, Lars-Hendrik, 2000. "Consumer Surplus vs. Welfare Standard in a Political Economy Model of Merger Control," CEPR Discussion Papers 2620, C.E.P.R. Discussion Papers.
  3. Volker Nocke & Michael D. Whinston, 2010. "Dynamic Merger Review," Journal of Political Economy, University of Chicago Press, vol. 118(6), pages 1201-1251.
  4. Massimo MOTTA & Helder VASCONCELOS, 2003. "Efficiency Gains and Myopic Antitrust Authority in a Dynamic Merger Game," Economics Working Papers ECO2003/23, European University Institute.
  5. AMIR, Rabah & DIAMANTOUDI, Effrosyni & XUE, Licun, 2003. "Merger performance under uncertain efficiency gains," CORE Discussion Papers 2003038, Université catholique de Louvain, Center for Operations Research and Econometrics (CORE).
  6. Tomaso Duso & Damien J. Neven & Lars-Hendrik Röller, 2007. "The Political Economy of European Merger Control: Evidence using Stock Market Data," Journal of Law and Economics, University of Chicago Press, vol. 50, pages 455-489.
  7. Farrell, Joseph & Shapiro, Carl, 1990. "Horizontal Mergers: An Equilibrium Analysis," American Economic Review, American Economic Association, vol. 80(1), pages 107-26, March.
  8. McAfee, R Preston & Williams, Michael A, 1992. "Horizontal Mergers and Antitrust Policy," Journal of Industrial Economics, Wiley Blackwell, vol. 40(2), pages 181-187, June.
  9. Fabienne Ilzkovitz & Roderick Meiklejohn, 2006. "European Merger Control: Do We Need an Efficiency Defence?," Chapters, in: European Merger Control, chapter 2 Edward Elgar Publishing.
  10. Nilssen, Tore & Sorgard, Lars, 1998. "Sequential horizontal mergers," European Economic Review, Elsevier, vol. 42(9), pages 1683-1702, November.
  11. Motta,Massimo, 2004. "Competition Policy," Cambridge Books, Cambridge University Press, number 9780521016919, October.
  12. Besanko, David & Spulber, Daniel F, 1993. "Contested Mergers and Equilibrium Antitrust Policy," Journal of Law, Economics and Organization, Oxford University Press, vol. 9(1), pages 1-29, April.
  13. Bergman, Mats A. & Jakobsson, Maria & Razo, Carlos, 2003. "An Econometric Analysis of the European Commission's Merger Decisions," Working Paper Series 2003:6, Uppsala University, Department of Economics.
  14. Johan N. M. Lagerlöf & Paul Heidhues, 2004. "On the Desirability of an Efficiency Defense in Merger Control," Royal Holloway, University of London: Discussion Papers in Economics 04/24, Department of Economics, Royal Holloway University of London, revised Oct 2004.
  15. Cheung, Francis K., 1992. "Two remarks on the equilibrium analysis of horizontal merger," Economics Letters, Elsevier, vol. 40(1), pages 119-123, September.
  16. Motta,Massimo, 2004. "Competition Policy," Cambridge Books, Cambridge University Press, number 9780521816632, October.
  17. Banal-Estanol, Albert & Macho-Stadler, Ines & Seldeslachts, Jo, 2008. "Endogenous mergers and endogenous efficiency gains: The efficiency defence revisited," International Journal of Industrial Organization, Elsevier, vol. 26(1), pages 69-91, January.
  18. Stephen W. Salant & Sheldon Switzer & Robert J. Reynolds, 1983. "Losses From Horizontal Merger: The Effects of an Exogenous Change in Industry Structure on Cournot-Nash Equilibrium," The Quarterly Journal of Economics, Oxford University Press, vol. 98(2), pages 185-199.
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