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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 Heinrich‐Heine‐Universität Düsseldorf, Düsseldorf Institute for Competition Economics (DICE) in its series DICE Discussion Papers with number 64.

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Date of creation: 2012
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Handle: RePEc:zbw:dicedp:64
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  1. Nilssen, Tore & Sorgard, Lars, 1998. "Sequential horizontal mergers," European Economic Review, Elsevier, vol. 42(9), pages 1683-1702, November.
  2. Amir, Rabah & Diamantoudi, Effrosyni & Xue, Licun, 2009. "Merger performance under uncertain efficiency gains," International Journal of Industrial Organization, Elsevier, vol. 27(2), pages 264-273, March.
  3. 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.
  4. Farrell, J. & Shapiro, C., 1988. "Horizontal Mergers: An Equilibrium Analysis," Papers 17, Princeton, Woodrow Wilson School - Discussion Paper.
  5. Joseph Farrell & Carl Shapiro, 2001. "Scale Economies and Synergies in Horizontal Merger Analysis," Industrial Organization 0012002, EconWPA, revised 05 Jan 2001.
  6. Lagerlof, Johan N.M. & Heidhues, Paul, 2005. "On the desirability of an efficiency defense in merger control," International Journal of Industrial Organization, Elsevier, vol. 23(9-10), pages 803-827, December.
  7. 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.
  8. repec:cup:cbooks:9780521016919 is not listed on IDEAS
  9. repec:cup:cbooks:9780521816632 is not listed on IDEAS
  10. 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.
  11. 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.
  12. 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.
  13. Motta, Massimo & Vasconcelos, Helder, 2005. "Efficiency gains and myopic antitrust authority in a dynamic merger game," International Journal of Industrial Organization, Elsevier, vol. 23(9-10), pages 777-801, December.
  14. Bergman, Mats A. & Jakobsson, Maria & Razo, Carlos, 2005. "An econometric analysis of the European Commission's merger decisions," International Journal of Industrial Organization, Elsevier, vol. 23(9-10), pages 717-737, December.
  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. Fabienne Ilzkovitz & Roderick Meiklejohn, 2006. "European Merger Control: Do We Need an Efficiency Defence?," Chapters, in: European Merger Control, chapter 2 Edward Elgar.
  17. Volker Nocke & Michael D. Whinston, 2010. "Dynamic Merger Review," Journal of Political Economy, University of Chicago Press, vol. 118(6), pages 1201 - 1251.
  18. 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.
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