Industry Concentration and Welfare - On the Use of Stock Market Evidence from Horizontal Mergers
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 rumor" as an event may create similar problems of interpretation. We also indicate how the event-study methodology may be adapted to identify competitive effects and thus, the welfare consequences for consumers.
|Date of creation:||06 Dec 2006|
|Date of revision:|
|Contact details of provider:|| Postal: |
Phone: +46 8 665 4500
Fax: +46 8 665 4599
Web page: http://www.ifn.se/
More information through EDIRC
Please report citation or reference errors to , or , if you are the registered author of the cited work, log in to your RePEc Author Service profile, click on "citations" and make appropriate adjustments.:
- 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.
- Farrell, Joseph & Shapiro, Carl, 1990.
"Horizontal Mergers: An Equilibrium Analysis,"
American Economic Review,
American Economic Association, vol. 80(1), pages 107-26, March.
- Farrell, Joseph & Shapiro, Carl, 1988. "Horizontal Mergers: An Equilibrium Analysis," Department of Economics, Working Paper Series qt0tp305nx, Department of Economics, Institute for Business and Economic Research, UC Berkeley.
- Farrell, J. & Shapiro, C., 1988. "Horizontal Mergers: An Equilibrium Analysis," Papers 17, Princeton, Woodrow Wilson School - Discussion Paper.
- Joseph Farrell and Carl Shapiro., 1988. "Horizontal Mergers: An Equilibrium Analysis," Economics Working Papers 8880, University of California at Berkeley.
- 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.
- 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.
- 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.
- FRIDOLFSSON, Sven-Olof & STENNEK, Johan, 1999.
"Why mergers reduce profits, and raise share prices: A theory of preemptive mergers,"
1999018, University of Antwerp, Faculty of Applied Economics.
- Sven-Olof Fridolfsson & Johan Stennek, 2005. "Why Mergers Reduce Profits And Raise Share Prices-A Theory Of Preemptive Mergers," Journal of the European Economic Association, MIT Press, vol. 3(5), pages 1083-1104, 09.
- Sven-Olof Fridolfsson & Johan Stennek, 2001. "Why Mergers Reduce Profits and Raise Share Prices: A Theory of Preemptive Mergers," CIG Working Papers FS IV 01-26, Wissenschaftszentrum Berlin (WZB), Research Unit: Competition and Innovation (CIG).
- Morton I. Kamien & Israel Zang, 1987.
"The Limits of Monopolization Through Acquisition,"
754, Northwestern University, Center for Mathematical Studies in Economics and Management Science.
- 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.
- 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.
- Borenstein, Severin, 1990. "Airline Mergers, Airport Dominance, and Market Power," American Economic Review, American Economic Association, vol. 80(2), pages 400-404, May.
- Mueller, Dennis C, 1985. "Mergers and Market Share," The Review of Economics and Statistics, MIT Press, vol. 67(2), pages 259-67, May.
- Persson, Lars & Horn, Henrik, 1998.
"Endogenous Mergers in Concentrated Markets,"
Working Paper Series
513, Research Institute of Industrial Economics.
- 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.
- 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.
- Horn, Henrik & Persson, Lars, 1999.
"The Equilibrium Ownership of an International Oligopoly,"
Working Paper Series
515, Research Institute of Industrial Economics.
- Horn, Henrik & Persson, Lars, 2001. "The equilibrium ownership of an international oligopoly," Journal of International Economics, Elsevier, vol. 53(2), pages 307-333, April.
- Horn, Henrik & Persson, Lars, 1999. "The Equilibrium Ownership of an International Oligopoly," CEPR Discussion Papers 2302, C.E.P.R. Discussion Papers.
- 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.
- A. Craig MacKinlay, 1997. "Event Studies in Economics and Finance," Journal of Economic Literature, American Economic Association, vol. 35(1), pages 13-39, March.
- Eckbo, B. Espen, 1983. "Horizontal mergers, collusion, and stockholder wealth," Journal of Financial Economics, Elsevier, vol. 11(1-4), pages 241-273, April.
- 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.
- 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.
- 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.
- McAfee, R. Preston & Williams, Michael A., 1988. "Can event studies detect anticompetitive mergers?," Economics Letters, Elsevier, vol. 28(2), pages 199-203.
- 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.
- 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.
- 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.
When requesting a correction, please mention this item's handle: RePEc:hhs:iuiwop:0682. See general information about how to correct material in RePEc.
For technical questions regarding this item, or to correct its authors, title, abstract, bibliographic or download information, contact: (Elisabeth Gustafsson)
If references are entirely missing, you can add them using this form.