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Assessing horizontal mergers under uncertain efficiency gains

Author

Listed:
  • Philippe Choné

    (CREST - Centre de Recherche en Économie et Statistique - ENSAI - Ecole Nationale de la Statistique et de l'Analyse de l'Information [Bruz] - Groupe ENSAE-ENSAI - Groupe des Écoles Nationales d'Économie et Statistique - X - École polytechnique - IP Paris - Institut Polytechnique de Paris - ENSAE Paris - École Nationale de la Statistique et de l'Administration Économique - Groupe ENSAE-ENSAI - Groupe des Écoles Nationales d'Économie et Statistique - IP Paris - Institut Polytechnique de Paris - CNRS - Centre National de la Recherche Scientifique)

  • Laurent Linnemer

    (CREST - Centre de Recherche en Économie et Statistique - ENSAI - Ecole Nationale de la Statistique et de l'Analyse de l'Information [Bruz] - Groupe ENSAE-ENSAI - Groupe des Écoles Nationales d'Économie et Statistique - X - École polytechnique - IP Paris - Institut Polytechnique de Paris - ENSAE Paris - École Nationale de la Statistique et de l'Administration Économique - Groupe ENSAE-ENSAI - Groupe des Écoles Nationales d'Économie et Statistique - IP Paris - Institut Polytechnique de Paris - CNRS - Centre National de la Recherche Scientifique)

Abstract

The analysis of horizontal mergers hinges on a tradeoff between unilateral effects and efficiency gains. We examine the role of uncertainty in this tradeoff. In theory, the attitude towards uncertainty depends on the curvature of the social objective function. On the one hand, adjustment effects, both on the consumers' and firms' sides, tend to make consumers' surplus and firms' profits convex. On the other hand, pass-through effects may act in the opposite direction. We show that convexity prevails in a number of situations, including the most general linear demand model. Implications for empirical merger analysis are exposed.

Suggested Citation

  • Philippe Choné & Laurent Linnemer, 2008. "Assessing horizontal mergers under uncertain efficiency gains," Post-Print hal-00558175, HAL.
    • Handle: RePEc:hal:journl:hal-00558175
    DOI: 10.1016/j.ijindorg.2007.08.002
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    Cited by:

    1. Lang, Matthias, 2017. "Legal uncertainty as a welfare enhancing screen," European Economic Review, Elsevier, vol. 91(C), pages 274-289.
    2. Harrington, Joseph E., 2021. "There may be no pass through of a merger-related cost efficiency," Economics Letters, Elsevier, vol. 208(C).
    3. Bisceglia, Michele & Piccolo, Salvatore & Tarantino, Emanuele, 2023. "M&A advisory and the merger review process," International Journal of Industrial Organization, Elsevier, vol. 87(C).
    4. Le Pape, Nicolas & Zhao, Kai, 2014. "Horizontal mergers and uncertainty," Economics - The Open-Access, Open-Assessment E-Journal (2007-2020), Kiel Institute for the World Economy, vol. 8, pages 1-31.
    5. Bernard Franck & Nicolas Le Pape, 2020. "The limited liability effect: Implications for anticompetitive horizontal mergers," Journal of Public Economic Theory, Association for Public Economic Theory, vol. 22(6), pages 2082-2102, December.
    6. Choné, Philippe & Linnemer, Laurent, 2020. "Linear demand systems for differentiated goods: Overview and user’s guide," International Journal of Industrial Organization, Elsevier, vol. 73(C).
    7. Emilie Dargaud, 2013. "Horizontal mergers, efficiency gains and remedies," European Journal of Law and Economics, Springer, vol. 36(2), pages 349-372, October.
    8. Kojun Hamada, 2012. "Uncertainty and Horizontal Mergers," Journal of Institutional and Theoretical Economics (JITE), Mohr Siebeck, Tübingen, vol. 168(2), pages 252-265, June.
    9. Rabah Amir & Jim Y. Jin & Michael Troege, 2022. "On the limits of free trade in a Cournot world: When are restrictions on trade beneficial?," Canadian Journal of Economics/Revue canadienne d'économique, John Wiley & Sons, vol. 55(4), pages 2036-2057, November.
    10. Amir, Rabah & Erickson, Philip & Jin, Jim, 2017. "On the microeconomic foundations of linear demand for differentiated products," Journal of Economic Theory, Elsevier, vol. 169(C), pages 641-665.
    11. 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.
    12. Shieh Shiou & Huang Chi-Fei & Chen Hsiao-Chi, 2013. "Can Horizontal Mergers Without Synergies Increase Consumer Welfare? Cournot and Bertrand Competition Under Uncertain Demand," The B.E. Journal of Economic Analysis & Policy, De Gruyter, vol. 13(1), pages 453-484, April.
    13. Ding, Wei & Fan, Cuihong & Wolfstetter, Elmar G., 2013. "Horizontal mergers with synergies: Cash vs. profit-share auctions," International Journal of Industrial Organization, Elsevier, vol. 31(5), pages 382-391.
    14. Heijdra, Ben J. & Ligthart, Jenny E., 2007. "Fiscal policy, monopolistic competition, and finite lives," Journal of Economic Dynamics and Control, Elsevier, vol. 31(1), pages 325-359, January.
    15. Cabolis, C. & Manasakis, C. & Moreno, Diego & Petrakis, Emmanuel, 2016. "R&D investments fostering horizontal mergers," UC3M Working papers. Economics 23280, Universidad Carlos III de Madrid. Departamento de Economía.
    16. Amir, Rabah & Jin, Jim Y. & Lasselle, Laurence, 2023. "Uniform, efficient and independent Ramsey taxes across markets," Games and Economic Behavior, Elsevier, vol. 138(C), pages 373-386.
    17. Corinne Langinier & Amrita RayChaudhuri, 2025. "Merger Review Under Asymmetric Information," Journal of Public Economic Theory, Association for Public Economic Theory, vol. 27(5), October.
    18. Yan He & Yung-ho Chiu & Bin Zhang, 2020. "Prevaluating Technical Efficiency Gains From Potential Mergers and Acquisitions in China’s Coal Industry," SAGE Open, , vol. 10(3), pages 21582440209, July.
    19. Raffaele Fiocco & Dongyu Guo, 2015. "Mergers between regulated firms with unknown efficiency gains," Review of Economic Design, Springer;Society for Economic Design, vol. 19(4), pages 299-326, December.

    More about this item

    Keywords

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    JEL classification:

    • K21 - Law and Economics - - Regulation and Business Law - - - Antitrust Law
    • L12 - Industrial Organization - - Market Structure, Firm Strategy, and Market Performance - - - Monopoly; Monopolization Strategies
    • L41 - Industrial Organization - - Antitrust Issues and Policies - - - Monopolization; Horizontal Anticompetitive Practices

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