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Merger Externalities in Oligopolistic Markets

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  • Klaus Gugler
  • Florian Szücs
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    Abstract

    We quantify externalities on profitability and market shares of competing firms in oligopolistic markets through the transition from an n to an n - 1 player oligopoly after a merger. Competitors are identified via the European Commission's market investigations and our methodology allows us to distinguish the externality due to the change in market structure from the merger effect. We obtain results consistent with the predictions of standard oligopoly models: rivals expand their output and increase their profits, whereas merging firms are negatively affected. This indicates that on average the market power effects of large mergers outweigh the efficiencies.

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    File URL: http://www.diw.de/documents/publikationen/73/diw_01.c.426970.de/dp1321.pdf
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    Bibliographic Info

    Paper provided by DIW Berlin, German Institute for Economic Research in its series Discussion Papers of DIW Berlin with number 1321.

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    Length: 32 p.
    Date of creation: 2013
    Date of revision:
    Handle: RePEc:diw:diwwpp:dp1321

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    1. Egger, Peter & Hahn, Franz R., 2010. "Endogenous bank mergers and their impact on banking performance: Some evidence from Austria," International Journal of Industrial Organization, Elsevier, vol. 28(2), pages 155-166, March.
    2. Eckbo, B. Espen, 1983. "Horizontal mergers, collusion, and stockholder wealth," Journal of Financial Economics, Elsevier, vol. 11(1-4), pages 241-273, April.
    3. Joseph A. Clougherty & Tomaso Duso, 2008. "The Impact of Horizontal Mergers on Rivals: Gains to Being Left Outside a Merger," CIG Working Papers SP II 2008-17r, Wissenschaftszentrum Berlin (WZB), Research Unit: Competition and Innovation (CIG), revised Feb 2009.
    4. 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.
    5. Ornaghi, Carmine, 2009. "Mergers and innovation in big pharma," International Journal of Industrial Organization, Elsevier, vol. 27(1), pages 70-79, January.
    6. Tomaso Duso & Damien J. Neven & Lars-Hendrik Röller, 2002. "The Political Economy of European Merger Control: Evidence using Stock Market Data," CIG Working Papers FS IV 02-34, Wissenschaftszentrum Berlin (WZB), Research Unit: Competition and Innovation (CIG).
    7. Bertrand, Olivier, 2009. "Effects of foreign acquisitions on R&D activity: Evidence from firm-level data for France," Research Policy, Elsevier, vol. 38(6), pages 1021-1031, July.
    8. repec:ant:wpaper:1999018 is not listed on IDEAS
    9. Ajeyo Banerjee & E. Woodrow Eckard, 1998. "Are Mega-Mergers Anticompetitive? Evidence from the First Great Merger Wave," RAND Journal of Economics, The RAND Corporation, vol. 29(4), pages 803-827, Winter.
    10. Raymond Deneckere & Carl Davidson, 1985. "Incentives to Form Coalitions with Bertrand Competition," RAND Journal of Economics, The RAND Corporation, vol. 16(4), pages 473-486, Winter.
    11. Klaus Gugler & Dennis C. Mueller & B. Burcin Yurtoglu & Christine Zulehner, 2001. "The Effects of Mergers: An International Comparison," CIG Working Papers FS IV 01-21, Wissenschaftszentrum Berlin (WZB), Research Unit: Competition and Innovation (CIG).
    12. Peter Egger & Franz R. Hahn, 2006. "Endogenous Bank Mergers and Their Impact on Banking Performance," WIFO Working Papers 271, WIFO.
    13. Klaus Gugler & Ralph Siebert, 2007. "Market Power versus Efficiency Effects of Mergers and Research Joint Ventures: Evidence from the Semiconductor Industry," The Review of Economics and Statistics, MIT Press, vol. 89(4), pages 645-659, November.
    14. Stillman, Robert, 1983. "Examining antitrust policy towards horizontal mergers," Journal of Financial Economics, Elsevier, vol. 11(1-4), pages 225-240, April.
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