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Is the event study methodology useful for merger analysis? A comparison of stock market and accounting data

  • Duso, Tomaso
  • Gugler, Klaus
  • Yurtoglu, Burcin

This paper presents empirical evidence about the ability of event studies to capture mergers' ex-post profitability as measured by accounting data. We use a sample of large horizontal concentrations during the period 1990-2002 involving 482 firms either as merging firms or competitors, and contrast a measure of the mergers' profitability based on stock market event studies with one based on balance sheet profit data. We show that using a long window around the announcement date (25 or 50 days before the event) increases the ability to capture the ex-post merger effect: the pairwise correlation coefficient is positive and highly significant.

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Article provided by Elsevier in its journal International Review of Law and Economics.

Volume (Year): 30 (2010)
Issue (Month): 2 (June)
Pages: 186-192

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Handle: RePEc:eee:irlaec:v:30:y:2010:i:2:p:186-192
Contact details of provider: Web page: http://www.elsevier.com/locate/irle

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  1. 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.
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  3. G. William Schwert, 1994. "Mark-Up Pricing in Mergers and Acquisitions," NBER Working Papers 4863, National Bureau of Economic Research, Inc.
  4. Tomaso Duso & Klaus Gugler & Burçin Yurtoglu, 2006. "How Effective is European Merger Control?," CIG Working Papers SP II 2006-12, Wissenschaftszentrum Berlin (WZB), Research Unit: Competition and Innovation (CIG).
  5. Eckbo, B. Espen, 1983. "Horizontal mergers, collusion, and stockholder wealth," Journal of Financial Economics, Elsevier, vol. 11(1-4), pages 241-273, April.
  6. 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).
  7. Kaplan, Steven N & Weisbach, Michael S, 1992. " The Success of Acquisitions: Evidence from Divestitures," Journal of Finance, American Finance Association, vol. 47(1), pages 107-38, March.
  8. 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.
  9. 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.
  10. 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.
  11. 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.
  12. 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.
  13. Fabienne IIzkovitz & Roderick Meiklejohn (ed.), 2006. "European Merger Control," Books, Edward Elgar, number 3915, July.
  14. 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.
  15. 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.
  16. 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.
  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. Duso, Tomaso & Gugler, Klaus & Yurtoglu, Burcin B., 2006. "EU Merger Remedies: A Preliminary Empirical Assessment," Discussion Paper Series of SFB/TR 15 Governance and the Efficiency of Economic Systems 81, Free University of Berlin, Humboldt University of Berlin, University of Bonn, University of Mannheim, University of Munich.
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