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Merger selection, evidence provision, and the timing of merger control

Author

Listed:
  • Andreea Cosnita-Langlais

    (EconomiX - EconomiX - UPN - Université Paris Nanterre - CNRS - Centre National de la Recherche Scientifique)

  • Jean‐philippe Tropeano

    (PSE - Paris School of Economics - UP1 - Université Paris 1 Panthéon-Sorbonne - ENS-PSL - École normale supérieure - Paris - PSL - Université Paris Sciences et Lettres - EHESS - École des hautes études en sciences sociales - ENPC - École nationale des ponts et chaussées - CNRS - Centre National de la Recherche Scientifique - INRAE - Institut National de Recherche pour l’Agriculture, l’Alimentation et l’Environnement, PJSE - Paris Jourdan Sciences Economiques - UP1 - Université Paris 1 Panthéon-Sorbonne - ENS-PSL - École normale supérieure - Paris - PSL - Université Paris Sciences et Lettres - EHESS - École des hautes études en sciences sociales - ENPC - École nationale des ponts et chaussées - CNRS - Centre National de la Recherche Scientifique - INRAE - Institut National de Recherche pour l’Agriculture, l’Alimentation et l’Environnement)

Abstract

Merger control impacts the type of merger projects that are submitted, as well as the information provided by the merging parties upon assessment. In this paper, we consider the outcomes in terms of selection of merger types and evidence provision of alternative timings for merger review, pre‐ or postconsummation of the merger. We show that the selection effect induced by the ex post merger review is welfare‐improving due to the deterrence of the most anticompetitive merger projects. In contrast, the welfare impact of evidence provision under ex post assessment is ambiguous. Balancing these two effects makes possible the welfare comparison between the ex ante and the ex post merger policy enforcement.

Suggested Citation

  • Andreea Cosnita-Langlais & Jean‐philippe Tropeano, 2023. "Merger selection, evidence provision, and the timing of merger control," PSE-Ecole d'économie de Paris (Postprint) halshs-04632063, HAL.
    • Handle: RePEc:hal:pseptp:halshs-04632063
    DOI: 10.1111/boer.12365
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    Cited by:

    1. Bougette, Patrice & Budzinski, Oliver & Marty, Frédéric, 2025. "Ex-ante versus Ex-post in competition law enforcement: Blurred boundaries and economic rationale," International Review of Law and Economics, Elsevier, vol. 82(C).

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