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Industry Concentration and Welfare - On the Use of Stock Market Evidence from Horizontal Mergers

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  • Fridolfsson, Sven-Olof
  • Stennek, Johan

Abstract

There is diverging empirical evidence on the competitive effects of horizontal mergers: consumer prices (and thus presumably competitors' profits) often rise while competitors' share prices fall. Our model of endogenous mergers provides a possible reconciliation. It is demonstrated that anticompetitive mergers may reduce competitors' share prices, if the merger announcement informs the market that the competitors' lost a race to buy the target. Also the use of 'first rumour' as an event may create similar problems of interpretation. We also indicate how the event-study methodology may be adapted to identiy competitive effects and thus, the welfare consequences for consumers.

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Bibliographic Info

Paper provided by C.E.P.R. Discussion Papers in its series CEPR Discussion Papers with number 5977.

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Date of creation: Dec 2006
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Handle: RePEc:cpr:ceprdp:5977

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Keywords: antitrust; coalition formation; event studies; in-play; mergers & acquisitions;

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References

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  1. 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.
  2. Horn, Henrik & Persson, Lars, 1999. "The Equilibrium Ownership of an International Oligopoly," Working Paper Series 515, Research Institute of Industrial Economics.
  3. 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.
  4. Farrell, Joseph & Shapiro, Carl, 1990. "Horizontal Mergers: An Equilibrium Analysis," American Economic Review, American Economic Association, vol. 80(1), pages 107-26, March.
  5. Horn, Henrik & Persson, Lars, 2001. "Endogenous mergers in concentrated markets," International Journal of Industrial Organization, Elsevier, vol. 19(8), pages 1213-1244, September.
  6. Morton I. Kamien & Israel Zang, 1987. "The Limits of Monopolization Through Acquisition," Discussion Papers 754, Northwestern University, Center for Mathematical Studies in Economics and Management Science.
  7. Eckbo, B Espen & Maksimovic, Vojislav & Williams, Joseph, 1990. "Consistent Estimation of Cross-Sectional Models in Event Studies," Review of Financial Studies, Society for Financial Studies, vol. 3(3), pages 343-65.
  8. Perry, Martin K & Porter, Robert H, 1985. "Oligopoly and the Incentive for Horizontal Merger," American Economic Review, American Economic Association, vol. 75(1), pages 219-27, March.
  9. Borenstein, Severin, 1990. "Airline Mergers, Airport Dominance, and Market Power," American Economic Review, American Economic Association, vol. 80(2), pages 400-404, May.
  10. Fabozzi, Frank J, et al, 1988. " A Note on Unsuccessful Tender Offers and Stockholder Returns," Journal of Finance, American Finance Association, vol. 43(5), pages 1275-83, December.
  11. Boyan Jovanovic & Peter L. Rousseau, 2001. "Mergers and Technological Change: 1885-1998," Vanderbilt University Department of Economics Working Papers 0116, Vanderbilt University Department of Economics.
  12. Prager, Robin A & Hannan, Timothy H, 1998. "Do Substantial Horizontal Mergers Generate Significant Price Effects? Evidence from the Banking Industry," Journal of Industrial Economics, Wiley Blackwell, vol. 46(4), pages 433-52, December.
  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. McAfee, R. Preston & Williams, Michael A., 1988. "Can event studies detect anticompetitive mergers?," Economics Letters, Elsevier, vol. 28(2), pages 199-203.
  15. Kim, E Han & Singal, Vijay, 1993. "Mergers and Market Power: Evidence from the Airline Industry," American Economic Review, American Economic Association, vol. 83(3), pages 549-69, June.
  16. 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.
  17. repec:ant:wpaper:1999018 is not listed on IDEAS
  18. 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.
  19. A. Craig MacKinlay, 1997. "Event Studies in Economics and Finance," Journal of Economic Literature, American Economic Association, vol. 35(1), pages 13-39, March.
  20. Eckbo, B Espen & Wier, Peggy, 1985. "Antimerger Policy under the Hart-Scott-Rodino Act: A Reexamination of the Market Power Hypothesis," Journal of Law and Economics, University of Chicago Press, vol. 28(1), pages 119-49, April.
  21. Mitchell, Mark L. & Mulherin, J. Harold, 1996. "The impact of industry shocks on takeover and restructuring activity," Journal of Financial Economics, Elsevier, vol. 41(2), pages 193-229, June.
  22. Singal, Vijay, 1996. "Airline Mergers and Competition: An Integration of Stock and Product Price Effects," The Journal of Business, University of Chicago Press, vol. 69(2), pages 233-68, April.
  23. Kamien, Morton I & Zang, Israel, 1993. "Monopolization by Sequential Acquisition," Journal of Law, Economics and Organization, Oxford University Press, vol. 9(2), pages 205-29, October.
  24. Heckman, James J & Smith, Jeffrey A, 1999. "The Pre-programme Earnings Dip and the Determinants of Participation in a Social Programme. Implications for Simple Programme Evaluation Strategies," Economic Journal, Royal Economic Society, vol. 109(457), pages 313-48, July.
  25. Mueller, Dennis C, 1985. "Mergers and Market Share," The Review of Economics and Statistics, MIT Press, vol. 67(2), pages 259-67, May.
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Citations

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Cited by:
  1. Budzinski, Oliver, 2012. "Empirische Ex-Post Evaluation von wettbewerbspolitischen Entscheidungen: Methodische Anmerkungen," Ilmenau Economics Discussion Papers 69, Ilmenau University of Technology, Institute of Economics.
  2. 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).
  3. Patrice Bougette & Florent Venayre, 2008. "Contrôles a priori et a posteriori des concentrations : comment augmenter l'efficacité des politiques de concurrence ?," Working Papers 245031, Institut National de la Recherche Agronomique, France.
  4. Mats Bergman, 2008. "Quis Custodiet Ipsos Custodes? or Measuring and Evaluating the Effectiveness of Competition Enforcement," De Economist, Springer, vol. 156(4), pages 387-409, December.
  5. Patrice Bougette & Florent Venayre, 2008. "Contrôles a priori et a posteriori des concentrations : comment augmenter l'efficacité des politiques de concurrence ?," Post-Print halshs-00463953, HAL.
  6. Tomaso Duso & Klaus Gugler & Florian Szücs, 2013. "An Empirical Assessment of the 2004 EU Merger Policy Reform," Economic Journal, Royal Economic Society, vol. 123(11), pages F596-F619, November.
  7. Oliver Budzinski, 2011. "Impact Evaluation of Merger Decisions," Working Papers 112/11, University of Southern Denmark, Department of Environmental and Business Economics.
  8. Keller, Andreas, 2010. "Competition effects of mergers: An event study of the German electricity market," Energy Policy, Elsevier, vol. 38(9), pages 5264-5271, September.
  9. Fridolfsson, Sven-Olof & Stennek, Johan, 2005. "Hold-up of anti-competitive mergers," International Journal of Industrial Organization, Elsevier, vol. 23(9-10), pages 753-775, December.
  10. Angelov, Nikolay, 2006. "Modelling firm mergers as a roommate problem," Working Paper Series 2006:10, Uppsala University, Department of Economics.
  11. Budzinski, Oliver, 2012. "Impact evaluation of merger control decisions," Ilmenau Economics Discussion Papers 75, Ilmenau University of Technology, Institute of Economics.

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