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Cournot Oligopoly Conditions Under Which Any Horizontal Merger is Profitable

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  • Hennessy, David A.

Abstract

Findings in economic theory suggest that horizontal mergers involving firms with aggregate market share less than 50% are unlikely to be motivated by the consequent reduction in competitivity. The results arise because, absent cost efficiencies, quantity-setting firms in small mergers are impoverished by the merger. We demonstrate that this conclusion is a consequence of the strong restrictions imposed on the demand function, and we identify a well-behaved demand function such that any set of merging firms benefits from the reduction in competition even when there are no cost efficiencies.

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Bibliographic Info

Paper provided by Iowa State University, Department of Economics in its series Staff General Research Papers with number 1699.

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Date of creation: 01 Nov 2000
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Publication status: Published in Review of Industrial Organization, November 2000, vol. 17, pp. 277-284
Handle: RePEc:isu:genres:1699

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Postal: Iowa State University, Dept. of Economics, 260 Heady Hall, Ames, IA 50011-1070
Phone: +1 515.294.6741
Fax: +1 515.294.0221
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Web page: http://www.econ.iastate.edu
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References

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Please report citation or reference errors to , or , if you are the registered author of the cited work, log in to your RePEc Author Service profile, click on "citations" and make appropriate adjustments.:
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  1. Farrell, Joseph & Shapiro, Carl, 1988. "Horizontal Mergers: An Equilibrium Analysis," Department of Economics, Working Paper Series qt0tp305nx, Department of Economics, Institute for Business and Economic Research, UC Berkeley.
  2. Morton I. Kamien & Israel Zang, 1988. "Competitively Cost Advantageous Mergers and Monopolization," Discussion Papers 799, Northwestern University, Center for Mathematical Studies in Economics and Management Science.
  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. 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.
  5. Cheung, Francis K., 1992. "Two remarks on the equilibrium analysis of horizontal merger," Economics Letters, Elsevier, vol. 40(1), pages 119-123, September.
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Citations

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Cited by:
  1. Jacek Prokop, 2009. "Monopolisation of triopoly – revisited," International Journal of Computational Economics and Econometrics, Inderscience Enterprises Ltd, vol. 1(2), pages 113-125.
  2. Tina Kao & Flavio Menezes, 2010. "Welfare-Enhancing Mergers Under Product Differentiation," Manchester School, University of Manchester, vol. 78(4), pages 290-301, 07.
  3. D. Dragone & L. Lambertini & A. Mantovani, 2006. "Horizontal Mergers with Scale Economies," Working Papers 571, Dipartimento Scienze Economiche, Universita' di Bologna.
  4. Huck, S. & Konrad, K.A. & Müller, W., 2005. "Merger Without Costs Advantage," Discussion Paper 2005-019, Tilburg University, Tilburg Law and Economic Center.
  5. R. Cellini & L. Lambertini, 2003. "Capital Accumulation and Horizontal Mergers in Differential Oligopoly Games," Working Papers 477, Dipartimento Scienze Economiche, Universita' di Bologna.
  6. D. Dragone & L. Lambertini & A. Mantovani, 2007. "Antitrust Guidelines: A Simple Operational Method for Evaluating Horizontal Mergers," Working Papers 591, Dipartimento Scienze Economiche, Universita' di Bologna.
  7. Oliver Budzinski & Jürgen-Peter Kretschmer, 2009. "Implications of Unprofitable Horizontal Mergers: A Positive External Effect does not Suffice to Clear a Merger!," Working Papers 84/09, University of Southern Denmark, Department of Environmental and Business Economics.
  8. Tsygankova, Marina, 2010. "When is a break-up of Gazprom good for Russia?," Energy Economics, Elsevier, vol. 32(4), pages 908-917, July.
  9. Le Pape, Nicolas & Zhao, Kai, 2013. "Horizontal mergers and uncertainty," Economics Discussion Papers 2013-62, Kiel Institute for the World Economy.
  10. Marina Tsygankova, 2007. "When is Mighty Gazprom Good for Russia?," Discussion Papers 526, Research Department of Statistics Norway.
  11. Oliver Budzinski & Jürgen-Peter Kretschmer, 2007. "Implications of Unprofitable Horizontal Mergers: A Re-Interpretation of the Farrell-Shapiro-Framework," Marburg Working Papers on Economics 200714, Philipps-Universität Marburg, Faculty of Business Administration and Economics, Department of Economics (Volkswirtschaftliche Abteilung).
  12. Zhou, Wen, 2008. "Endogenous horizontal mergers under cost uncertainty," International Journal of Industrial Organization, Elsevier, vol. 26(4), pages 903-912, July.

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