IDEAS home Printed from
   My bibliography  Save this paper

Why Event Studies Do Not Detect Anti-Competitive Mergers


  • Fridolfsson, Sven-Olof

    () (The Research Institute of Industrial Economics)

  • Stennek, Johan

    (The Research Institute of Industrial Economics)


Anticompetitive mergers increase competitors' profits, since they reduce competition. Using a model of endogenous mergers, we show that such mergers nevertheless may reduce the competitors' share-prices. Thus, event-studies can not detect anti-competitive mergers.

Suggested Citation

  • Fridolfsson, Sven-Olof & Stennek, Johan, 2000. "Why Event Studies Do Not Detect Anti-Competitive Mergers," Working Paper Series 542, Research Institute of Industrial Economics.
  • Handle: RePEc:hhs:iuiwop:0542

    Download full text from publisher

    File URL:
    Download Restriction: no

    References listed on IDEAS

    1. Blomstrom, Magnus & Fors, Gunnar & Lipsey, Robert E, 1997. "Foreign Direct Investment and Employment: Home Country Experience in the United States and Sweden," Economic Journal, Royal Economic Society, vol. 107(445), pages 1787-1797, November.
    2. James R. Markusen, 1995. "The Boundaries of Multinational Enterprises and the Theory of International Trade," Journal of Economic Perspectives, American Economic Association, vol. 9(2), pages 169-189, Spring.
    3. Braconier, Henrik & Ekholm, Karolina, 2000. "Swedish Multinationals and Competition from High- and Low-Wage Locations," Review of International Economics, Wiley Blackwell, vol. 8(3), pages 448-461, August.
    4. repec:hhs:iuiwop:490 is not listed on IDEAS
    5. repec:hhs:iuiwop:523 is not listed on IDEAS
    Full references (including those not matched with items on IDEAS)


    Citations are extracted by the CitEc Project, subscribe to its RSS feed for this item.

    Cited by:

    1. 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.
    2. Sven-Olof Fridolfsson & Johan Stennek, 2005. "Why Mergers Reduce Profits And Raise Share Prices-A Theory Of Preemptive Mergers," Journal of the European Economic Association, MIT Press, vol. 3(5), pages 1083-1104, September.
    3. Tobias Lindqvist & Johan Stennek, 2005. "The Insiders’ Dilemma: An Experiment on Merger Formation," Experimental Economics, Springer;Economic Science Association, vol. 8(3), pages 267-284, September.
    4. Panagiotis Fotis & Michael Polemis & Nikolaos Zevgolis, 2011. "Robust Event Studies for Derogation from Suspension of Concentrations in Greece during the Period 1995–2008," Journal of Industry, Competition and Trade, Springer, vol. 11(1), pages 67-89, March.
    5. Damien Neven, 2002. "Discrepancies Between Markets and Regulators: an Analysis of the First ten Years of EU Merger Control," IHEID Working Papers 10-2002, Economics Section, The Graduate Institute of International Studies.
    6. Norbäck, Pehr-Johan & Persson, Lars, 2003. "Cross-Border Acquisitions and Greenfield Entry: Profitability and Stock Market Value," CEPR Discussion Papers 3998, C.E.P.R. Discussion Papers.

    More about this item


    Mergers & Acquisitions; Event Studies; Antitrust; Coalition Formation;

    JEL classification:

    • G14 - Financial Economics - - General Financial Markets - - - Information and Market Efficiency; Event Studies; Insider Trading
    • G34 - Financial Economics - - Corporate Finance and Governance - - - Mergers; Acquisitions; Restructuring; Corporate Governance
    • L12 - Industrial Organization - - Market Structure, Firm Strategy, and Market Performance - - - Monopoly; Monopolization Strategies
    • L41 - Industrial Organization - - Antitrust Issues and Policies - - - Monopolization; Horizontal Anticompetitive Practices


    Access and download statistics


    All material on this site has been provided by the respective publishers and authors. You can help correct errors and omissions. When requesting a correction, please mention this item's handle: RePEc:hhs:iuiwop:0542. See general information about how to correct material in RePEc.

    For technical questions regarding this item, or to correct its authors, title, abstract, bibliographic or download information, contact: (Elisabeth Gustafsson). General contact details of provider: .

    If you have authored this item and are not yet registered with RePEc, we encourage you to do it here. This allows to link your profile to this item. It also allows you to accept potential citations to this item that we are uncertain about.

    We have no references for this item. You can help adding them by using this form .

    If you know of missing items citing this one, you can help us creating those links by adding the relevant references in the same way as above, for each refering item. If you are a registered author of this item, you may also want to check the "citations" tab in your RePEc Author Service profile, as there may be some citations waiting for confirmation.

    Please note that corrections may take a couple of weeks to filter through the various RePEc services.

    IDEAS is a RePEc service hosted by the Research Division of the Federal Reserve Bank of St. Louis . RePEc uses bibliographic data supplied by the respective publishers.