Generating Evidence to Guide Merger Enforcement
The challenge of effective merger enforcement is tremendous. U.S. antitrust agencies must, by statute, quickly forecast the competitive effects of mergers that occur in virtually every sector of the economy to determine if mergers can proceed. Surprisingly, given the complexity of the regulators task, there is remarkably little empirical evidence on the effects of mergers to guide regulators. This paper describes the necessity of retrospective analysis of past mergers in building an empirical basis for antitrust enforcement, and provides guidance on the key measurement issues researchers confront in estimating the price effects of mergers. We also describe how evidence from merger retrospectives can be used to evaluate the economic models used to predict the competitive effects of mergers.
|Date of creation:||Mar 2009|
|Date of revision:|
|Publication status:||published as Orley Ashenfelter & Daniel Hosken & Matthew Weinberg, 2009. "Generating Evidence to Guide Merger Enforcement," CPI Journal, Competition Policy International, vol. 5.|
|Contact details of provider:|| Postal: |
Web page: http://www.nber.org
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.:
- John Simpson & Christopher Taylor, 2008. "Do Gasoline Mergers Affect Consumer Prices? The Marathon Ashland Petroleum and Ultramar Diamond Shamrock Transaction," Journal of Law and Economics, University of Chicago Press, vol. 51(1), pages 135-152, 02.
- Aviv Nevo, 2000. "Mergers with Differentiated Products: The Case of the Ready-to-Eat Cereal Industry," RAND Journal of Economics, The RAND Corporation, vol. 31(3), pages 395-421, Autumn.
- Dennis W. Carlton, 2007. "The Need to Measure the Effect of Merger Policy and How to Do It," EAG Discussions Papers 200715, Department of Justice, Antitrust Division.
- 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.
- Orley Ashenfelter & Daniel Hosken, 2008.
"The Effect of Mergers on Consumer Prices: Evidence from Five Selected Case Studies,"
1037, Princeton University, Department of Economics, Center for Economic Policy Studies..
- Orley Ashenfelter & Daniel Hosken, 2008. "The Effect of Mergers on Consumer Prices: Evidence from Five Selected Case Studies," NBER Working Papers 13859, National Bureau of Economic Research, Inc.
- Perron, P. & Bai, J., 1995.
"Estimating and Testing Linear Models with Multiple Structural Changes,"
Cahiers de recherche
9552, Centre interuniversitaire de recherche en économie quantitative, CIREQ.
- Jushan Bai & Pierre Perron, 1998. "Estimating and Testing Linear Models with Multiple Structural Changes," Econometrica, Econometric Society, vol. 66(1), pages 47-78, January.
- Perron, P. & Bai, J., 1995. "Estimating and Testing Linear Models with Multiple Structural Changes," Cahiers de recherche 9552, Universite de Montreal, Departement de sciences economiques.
- Stillman, Robert, 1983. "Examining antitrust policy towards horizontal mergers," Journal of Financial Economics, Elsevier, vol. 11(1-4), pages 225-240, April.
- Eckbo, B. Espen, 1983. "Horizontal mergers, collusion, and stockholder wealth," Journal of Financial Economics, Elsevier, vol. 11(1-4), pages 241-273, April.
- Matthew Weinberg, 2007. "The Price Effects of Horizontal Mergers: A Survey," Working Papers 62, Princeton University, Department of Economics, Center for Economic Policy Studies..
- Chouinard, Hayley & Perloff, Jeffrey M, 2002.
"Gasoline price differences: taxes, pollution regulations, mergers, market power, and market conditions,"
CUDARE Working Paper Series
951, University of California at Berkeley, Department of Agricultural and Resource Economics and Policy.
- Chouinard Hayley H & Perloff Jeffrey M, 2007. "Gasoline Price Differences: Taxes, Pollution Regulations, Mergers, Market Power, and Market Conditions," The B.E. Journal of Economic Analysis & Policy, De Gruyter, vol. 7(1), pages 1-28, January.
- Chouinard, Hayley & Perloff, Jeffrey M., 2002. "Gasoline Price Differences: Taxes, Pollution Regulations, Mergers, Market Power, and Market Conditions," Department of Agricultural & Resource Economics, UC Berkeley, Working Paper Series qt2m60j5tp, Department of Agricultural & Resource Economics, UC Berkeley.
- McAfee, R. Preston & Williams, Michael A., 1988. "Can event studies detect anticompetitive mergers?," Economics Letters, Elsevier, vol. 28(2), pages 199-203.
- Justine S. Hastings & Richard J. Gilbert, 2005. "MARKET POWER, VERTICAL INTEGRATION AND THE WHOLESALE PRICE OF GASOLINE -super-* ," Journal of Industrial Economics, Wiley Blackwell, vol. 53(4), pages 469-492, December.
- Andrews, Donald W K & Ploberger, Werner, 1994.
"Optimal Tests When a Nuisance Parameter Is Present Only under the Alternative,"
Econometric Society, vol. 62(6), pages 1383-1414, November.
- Tom Doan, . "APGRADIENTTEST: RATS procedure to perform Andrews-Ploberger Structural Break Test for GARCH/Maximum Likelihood," Statistical Software Components RTS00007, Boston College Department of Economics.
- Tom Doan, . "APBREAKTEST: RATS procedure to implement Andrews-Ploberger Structural Break Test," Statistical Software Components RTS00006, Boston College Department of Economics.
- Donald W.K. Andrews & Werner Ploberger, 1992. "Optimal Tests When a Nuisance Parameter Is Present Only Under the Alternative," Cowles Foundation Discussion Papers 1015, Cowles Foundation for Research in Economics, Yale University.
- Tom Doan, . "REGHBREAK: RATS procedure to perform structural break test with bootstrapped p-values," Statistical Software Components RTS00176, Boston College Department of Economics.
- 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.
- Orley Ashenfelter & David Ashmore & Jonathan Baker & Suzanne Gleason & Daniel Hosken, 2006. "Empirical Methods in Merger Analysis: Econometric Analysis of Pricing in FTC v. Staples," International Journal of the Economics of Business, Taylor & Francis Journals, vol. 13(2), pages 265-279.
- 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.
When requesting a correction, please mention this item's handle: RePEc:nbr:nberwo:14798. 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: ()
If references are entirely missing, you can add them using this form.