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Quantifying the Scope for Efficiency Defense in Merger Control: The Werden-Froeb-Index

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Author Info

  • Goppelsroeder, M.

    (Graduate Institute of International Studies, Geneva)

  • Schinkel, M.P.

    ()
    (Universiteit van Amsterdam)

  • Tuinstra, J.

    (Universiteit van Amsterdam)

Abstract

In both US and EU merger control, merger-specific efficiencies are recognized as a possible defense for horizontal mergers that raise competition concerns. We introduce the Werden-Froeb-index (WFI) to assist in evaluating these efficiencies. The index measures the average reduction in marginal costs required to restore pre-merger equilibrium prices and quantities after the merger is consummated. It has low information requirements and can deal with any number of firms in price- or quantity-competition merging fully or partially, and a large class of demand and cost functions. We show how the WFI complements Phase I merger inquiries as a screening mechanism.

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File URL: http://www1.fee.uva.nl/cendef/publications/papers/GoppSchinTuin110706.pdf
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Bibliographic Info

Paper provided by Universiteit van Amsterdam, Center for Nonlinear Dynamics in Economics and Finance in its series CeNDEF Working Papers with number 06-09.

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Date of creation: 2006
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Handle: RePEc:ams:ndfwpp:06-09

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Postal: Dept. of Economics and Econometrics, Universiteit van Amsterdam, Roetersstraat 11, NL - 1018 WB Amsterdam, The Netherlands
Phone: + 31 20 525 52 58
Fax: + 31 20 525 52 83
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Web page: http://www.fee.uva.nl/cendef/
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References

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  1. Roy J. Epstein & Daniel L. Rubinfeld, 2002. "Merger Simulation: A Simplified Approach with New Applications," Industrial Organization 0201002, EconWPA.
  2. Heidhues, Paul & Lagerlöf, Johan N.M., 2003. "On the Desirability of an Efficiency Defense in Merger Control," CEPR Discussion Papers 3841, C.E.P.R. Discussion Papers.
  3. Joseph Farrell and Carl Shapiro., 1988. "Horizontal Mergers: An Equilibrium Analysis," Economics Working Papers 8880, University of California at Berkeley.
  4. White, Lawrence J, 1987. "Antitrust and Merger Policy: A Review and Critique," Journal of Economic Perspectives, American Economic Association, vol. 1(2), pages 13-22, Fall.
  5. Joseph Farrell & Carl Shapiro, 2001. "Scale Economies and Synergies in Horizontal Merger Analysis," Industrial Organization 0012002, EconWPA, revised 05 Jan 2001.
  6. Kamien, Morton I & Zang, Israel, 1993. "Monopolization by Sequential Acquisition," Journal of Law, Economics and Organization, Oxford University Press, vol. 9(2), pages 205-29, October.
  7. 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.
  8. Fabrizi, Simona & Lippert, Steffen, 2005. "How much efficiency gains and price reductions for an efficiency defense? 'Quanto Basta'," DFAEII Working Papers 2004-04, University of the Basque Country - Department of Foundations of Economic Analysis II.
  9. Steven T. Berry & Joel Waldfogel, 2001. "Do Mergers Increase Product Variety? Evidence From Radio Broadcasting," The Quarterly Journal of Economics, MIT Press, vol. 116(3), pages 1009-1025, August.
  10. Bruce R. Lyons, 2004. "Reform of European Merger Policy," Review of International Economics, Wiley Blackwell, vol. 12(2), pages 246-261, 05.
  11. Reitman, David, 1994. "Partial Ownership Arrangements and the Potential for Collusion," Journal of Industrial Economics, Wiley Blackwell, vol. 42(3), pages 313-22, September.
  12. Werden, G.J. & G.J. & Froeb, L.M., 1995. "Simulation as an Alternative to Structural Merger Policy in Differentiated Products Industries," Papers 95-02, U.S. Department of Justice - Antitrust Division.
  13. Werden, G.J., 1996. "A Robust Test for Consumer Welfare Enhancing Mergers Among Sellers of Differentiated Products," Papers 96-01, U.S. Department of Justice - Antitrust Division.
  14. Fisher,Franklin M. & Shell,Karl, 1998. "Economic Analysis of Production Price Indexes," Cambridge Books, Cambridge University Press, number 9780521556231, October.
  15. Fisher, Franklin M, 1987. "Horizontal Mergers: Triage and Treatment," Journal of Economic Perspectives, American Economic Association, vol. 1(2), pages 23-40, Fall.
  16. Epstein, Roy J. & Rubinfeld, Daniel, 2012. "Merger Simulation: A Simplified Approach with New Applications," Department of Economics, Working Paper Series qt2k9116ph, Department of Economics, Institute for Business and Economic Research, UC Berkeley.
  17. Froeb, L.M. & Werden, G.J., 1997. "A Robust test for Consumer Welfare Enhancing Mergers Among Sellers of a Homogeneous Product," Papers 97-1, U.S. Department of Justice - Antitrust Division.
  18. Dansby, Robert E & Willig, Robert D, 1979. "Industry Performance Gradient Indexes," American Economic Review, American Economic Association, vol. 69(3), pages 249-60, June.
  19. Epstein, Roy J. & Rubinfeld, Daniel, 2001. "Merger Simulation: A Simplified Approach with New Applications," Department of Economics, Working Paper Series qt1c65s24r, Department of Economics, Institute for Business and Economic Research, UC Berkeley.
  20. Röller, Lars-Hendrik & Stennek, Johan & Verboven, Frank, 2000. "Efficiency Gains from Mergers," Working Paper Series 543, Research Institute of Industrial Economics.
  21. Werden, Gregory J, 1996. "A Robust Test for Consumer Welfare Enhancing Mergers among Sellers of Differentiated Products," Journal of Industrial Economics, Wiley Blackwell, vol. 44(4), pages 409-13, December.
  22. Rubinfeld, Daniel L. & Epstein, Roy J., 2001. "Merger Simulation: A Simplified Approach with New Applications," Competition Policy Center, Working Paper Series qt2sq9s8c8, Competition Policy Center, Institute for Business and Economic Research, UC Berkeley.
  23. Reynolds, Robert J. & Snapp, Bruce R., 1986. "The competitive effects of partial equity interests and joint ventures," International Journal of Industrial Organization, Elsevier, vol. 4(2), pages 141-153, June.
  24. Epstein, Roy J. & Rubinfeld, Daniel L., 2001. "Merger Simulation: A Simplified Approach with New Applications," Department of Economics, Working Paper Series qt9jt389nb, Department of Economics, Institute for Business and Economic Research, UC Berkeley.
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Cited by:
  1. Farrell Joseph & Shapiro Carl, 2010. "Antitrust Evaluation of Horizontal Mergers: An Economic Alternative to Market Definition," The B.E. Journal of Theoretical Economics, De Gruyter, vol. 10(1), pages 1-41, March.
  2. Emilie Dargaud, 2013. "Horizontal mergers, efficiency gains and remedies," European Journal of Law and Economics, Springer, vol. 36(2), pages 349-372, October.
  3. Bos Jaap W.B. & Ling Chan Yee & Kolari James W & Yuan Jiang, 2010. "Competition and Critical Mass," Research Memorandum 063, Maastricht University, Maastricht Research School of Economics of Technology and Organization (METEOR).

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