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Is the Event Study Methodology Useful for Merger Analysis? A Comparison of Stock Market and Accounting Data

  • Tomaso Duso
  • Klaus Gugler
  • Burcin Yurtoglu

We use a sample of 167 mergers during the period 1990-2002 involving 544 firms either as merging firms or competitors. We contrast a measure of the merger’s profitability based on event studies with one based on accounting data. We find positive and significant correlations between them when using a long window around the announcement date. ZUSAMMENFASSUNG - (Ist die "event study" Methodologie nützlich für die Analyse von Fusionen? Ein Vergleich von Aktienmärkte und Bilanzdaten) Wir analysieren eine Stichprobe von 167 Fusionen, die zwischen 1990 und 2002 stattgefunden haben und welche 544 Unternehmen -entweder als fusionierende Parteien oder als Wettbewerber- involviert haben. Wir vergleichen eine auf "event studies" basierende Rentabilitätsmaß der Fusion zu einer alternativen Maß, die durch Bilanzdaten konstruiert wurde. Wir finden, dass diese zwei maße positiv und signifikant korrelieren besonders wenn wir ein langes Fenster um die Fusionsankündigung in dem "event study" benutzen.

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Paper provided by Wissenschaftszentrum Berlin (WZB), Research Unit: Competition and Innovation (CIG) in its series CIG Working Papers with number SP II 2006-19.

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Length: 15 pages
Date of creation: Sep 2006
Date of revision:
Handle: RePEc:wzb:wzebiv:spii2006-19
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  1. Kasznik, Ron & Aboody, David & Williams, Michael, 2000. "Purchase versus Pooling in Stock-for-Stock Acquisitions: Why Do Firms Care?," Research Papers 1614, Stanford University, Graduate School of Business.
  2. Goergen, M. & Renneboog, L.D.R., 2002. "Shareholder Wealth Effects of European Domestic and Cross-Border Takeover Bids," Discussion Paper 2002-50, Tilburg University, Center for Economic Research.
  3. Duso, Tomaso & Gugler, Klaus & Yurtoglu, Burcin B., 2006. "How Effective is European Merger Control?," Discussion Paper Series of SFB/TR 15 Governance and the Efficiency of Economic Systems 153, Free University of Berlin, Humboldt University of Berlin, University of Bonn, University of Mannheim, University of Munich.
  4. Malatesta, Paul H., 1983. "The wealth effect of merger activity and the objective functions of merging firms," Journal of Financial Economics, Elsevier, vol. 11(1-4), pages 155-181, April.
  5. Tomaso Duso & Klaus Gugler & Burcin Yurtoglu, 2005. "EU Merger Remedies: A Preliminary Empirical Assessment," CIG Working Papers SP II 2005-16, Wissenschaftszentrum Berlin (WZB), Research Unit: Competition and Innovation (CIG).
  6. Gregor Andrade & Mark Mitchell & Erik Stafford, 2001. "New Evidence and Perspectives on Mergers," Journal of Economic Perspectives, American Economic Association, vol. 15(2), pages 103-120, Spring.
  7. 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).
  8. Steven Kaplan & Michael S. Weisbach, 1990. "The Success of Acquisitions: Evidence From Disvestitures," NBER Working Papers 3484, National Bureau of Economic Research, Inc.
  9. Aboody, David & Kasznik, Ron & Williams, Michael, 2000. "Purchase versus pooling in stock-for-stock acquisitions: Why do firms care?," Journal of Accounting and Economics, Elsevier, vol. 29(3), pages 261-286, June.
  10. Robert J. Shiller, 2003. "From Efficient Markets Theory to Behavioral Finance," Journal of Economic Perspectives, American Economic Association, vol. 17(1), pages 83-104, Winter.
  11. Eugene F. Fama, . "Market Efficiency, Long-term Returns, and Behavioral Finance," CRSP working papers 340, Center for Research in Security Prices, Graduate School of Business, University of Chicago.
  12. Bengt Holmstrom & Steven N. Kaplan, 2001. "Corporate Governance and Merger Activity in the United States: Making Sense of the 1980s and 1990s," Journal of Economic Perspectives, American Economic Association, vol. 15(2), pages 121-144, Spring.
  13. Eckbo, B. Espen, 1983. "Horizontal mergers, collusion, and stockholder wealth," Journal of Financial Economics, Elsevier, vol. 11(1-4), pages 241-273, April.
  14. Caves, Richard E., 1989. "Mergers, takeovers, and economic efficiency : Foresight vs. hindsight," International Journal of Industrial Organization, Elsevier, vol. 7(1), pages 151-174, March.
  15. Healy, Paul M. & Palepu, Krishna G. & Ruback, Richard S., 1992. "Does corporate performance improve after mergers?," Journal of Financial Economics, Elsevier, vol. 31(2), pages 135-175, April.
  16. Schwert, G. William, 1996. "Markup pricing in mergers and acquisitions," Journal of Financial Economics, Elsevier, vol. 41(2), pages 153-192, June.
  17. Dennis C. Mueller & B. Burcin Yurtoglu, 2007. "Corporate governance and the returns to acquiring firms' shareholders: an international comparison," Managerial and Decision Economics, John Wiley & Sons, Ltd., vol. 28(8), pages 879-896.
  18. Fabienne IIzkovitz & Roderick Meiklejohn (ed.), 2006. "European Merger Control," Books, Edward Elgar, number 3915.
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