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Using Rival Effects to Identify Synergies and Improve Merger Typologies

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  • Joseph A. Clougherty
  • Tomaso Duso

Abstract

The strategic management literature has found it difficult to differentiate between collusive and efficiency-based synergies in horizontal merger activity. We propose a schematic to classify mergers that yields more information on merger types and merger effects, and that can, moreover, distinguish between mergers characterized largely by collusion-based synergies and mergers characterized largely by efficiency-based synergies. Crucial to the proposed measurement procedure is that it encompasses the impact of merger events not only on merging firms – as is custom – but also on non-merging competitor firms (the rivals). Employing the event-study methodology with stock-market data on samples of large horizontal mergers drawn from the US and UK (an Anglo-Saxon sub-sample) and from the European continent, we demonstrate how the proposed schematic can better clarify the nature of merger activity. ZUSAMMENFASSUNG - Die Literatur über strategisches Management hatte bisher Schwierigkeiten, zwischen wettbewerbsschädlichen und Effizienz steigenden Synergien bei horizontalen Zusammenschlüssen zu differenzieren. Wir schlagen einen konzeptionellen Rahmen vor, um Fusionen zu klassifizieren, welcher mehr Informationen sowohl über die Fusionstypologie als auch über die Wirkung von Zusammenschlüssen entschlüsselt und welcher eine klare Abgrenzung zwischen wettbewerbsschädlichen und wettbewerbsfreundlichen Fusionen erlaubt. Fundamental für diesen konzeptionellen Rahmen ist, dass er nicht nur die Wirkung der Fusion auf die fusionierenden Unternehmen (was typisch in der Literatur ist) umfasst, sondern auch ihre Wirkung auf die Rentabilität der Wettbewerber. Wir wenden eine Ereignisstudienmethode mit Aktiendaten an, um unsere Kategorisierung empirisch umzusetzen. Im Vergleich einer Stichprobe von Fusionen in der angelsächsischen Welt (US und Großbritannien) mit Fusionen zwischen kontinentaleuropäischen Firmen zeigen wir, wie unsere Methodologie hilfreich sein kann, die Art der Fusionsaktivitäten zu identifizieren.

Suggested Citation

  • Joseph A. Clougherty & Tomaso Duso, 2010. "Using Rival Effects to Identify Synergies and Improve Merger Typologies," CIG Working Papers SP II 2010-13, Wissenschaftszentrum Berlin (WZB), Research Unit: Competition and Innovation (CIG).
  • Handle: RePEc:wzb:wzebiv:spii2010_13
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    Cited by:

    1. Gu, Yiquan & Wenzel, Tobias, 2012. "Transparency, entry, and productivity," Economics Letters, Elsevier, vol. 115(1), pages 7-10.
    2. Thomas Giebe & Miyu Lee, 2020. "Competitors in merger control: Shall they be merely heard or also listened to?," European Journal of Law and Economics, Springer, vol. 49(3), pages 431-453, June.
    3. Lorraine Eden & Stewart R. Miller & Sarfraz Khan & Robert J. Weiner & Dan Li, 2022. "The event study in international business research: Opportunities, challenges, and practical solutions," Journal of International Business Studies, Palgrave Macmillan;Academy of International Business, vol. 53(5), pages 803-817, July.
    4. M. Grajek & K. Gugler & T. Kretschmer & I. Mişcişin, 2019. "Static or Dynamic Efficiency: Horizontal Merger Effects in the Wireless Telecommunications Industry," Review of Industrial Organization, Springer;The Industrial Organization Society, vol. 55(3), pages 375-402, November.
    5. Joseph Clougherty & Tomaso Duso, 2015. "Correcting for Self-Selection Based Endogeneity in Management Research: A Review and Empirical Demonstration," Discussion Papers of DIW Berlin 1465, DIW Berlin, German Institute for Economic Research.
    6. Clémence Christin, 2013. "Entry Deterrence Through Cooperative R&D Over-Investment," Recherches économiques de Louvain, De Boeck Université, vol. 79(2), pages 5-26.
    7. Kalanoski, Dimitrija & Cappa, Francesco & Pinelli, Michele & Bonardi, Jean-Philippe, 2025. "The Impact of International Mergers and Acquisitions on Rivals’ Performance: The Role of Formal and Informal Institutions," Journal of World Business, Elsevier, vol. 60(3).
    8. repec:hum:wpaper:sfb649dp2015-011 is not listed on IDEAS
    9. Mataigne, Virginie & Manigart, Sophie & Luypaert, Mathieu, 2021. "Acquisitions: A curse or blessing for direct competitors? The impact of target ownership structure," Journal of Corporate Finance, Elsevier, vol. 69(C).
    10. Darren Filson & Saman Olfati & Fatos Radoniqi, 2015. "Evaluating Mergers in the Presence of Dynamic Competition Using Impacts on Rivals," Journal of Law and Economics, University of Chicago Press, vol. 58(4).
    11. Haucap, Justus & Herr, Annika & Frank, Björn, 2011. "In vino veritas: Theory and evidence on social drinking," DICE Discussion Papers 37, Heinrich Heine University Düsseldorf, Düsseldorf Institute for Competition Economics (DICE).
    12. Alcalde, Nuria & Powell, Ronan, 2022. "Government intervention in European mergers and acquisitions," The North American Journal of Economics and Finance, Elsevier, vol. 61(C).
    13. Joseph A. Clougherty & Jin Uk Kim & Bradley R. Skousen & Florian Szücs, 2017. "The Foundations of International Business: Cross-Border Investment Activity and the Balance between Market-Power and Efficiency Effects," Journal of Management Studies, Wiley Blackwell, vol. 54(3), pages 340-365, May.
    14. Han, Tao, 2021. "Imperfect information in firm growth strategy : Three essays on M&A and FDI activities," Other publications TiSEM 43824698-85a4-4c90-949e-6, Tilburg University, School of Economics and Management.
    15. Stühmeier Torben & Wenzel Tobias, 2012. "Regulating Advertising in the Presence of Public Service Broadcasting," Review of Network Economics, De Gruyter, vol. 11(2), pages 1-23, June.

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