Antitrust Enforcement and the Design of Disclosure Rules. An Application to Merger Control

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Antitrust Enforcement and the Design of Disclosure Rules. An Application to Merger Control

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Aldo Gonzalez

Abstract

This article investigates how antitrust agencies should structure the disclosing of information about efficiency gains from interested parties (merging firms, and competitors) in merger control. We analyze the particular case of a horizontal merger with danger of foreclosure, where welfare can decrease either due to insufficient efficiency gains (efficiency defense) or due to excessive efficiency gains if the competitor exits (effi- ciency offense). The first result is that evidence from competitors is not required unless the ex-ante market shares of the merging firms exceed a threshold. Second, we support the role of advocacy of the parties. The burden of proof for efficiency defense should rest in the insiders (merg- ing firms) whereas the burden of proof for efficiency offense should rest in outsiders (competitors). Finally, it is optimal to make insiders report first and outsiders second and any communication among parties has to be prohibited

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Paper provided by Econometric Society in its series Econometric Society 2004 Latin American Meetings with number 199.

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Date of creation: 11 Aug 2004
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Handle: RePEc:ecm:latm04:199

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Find related papers by JEL classification:
L40 - Industrial Organization - - Antitrust Issues and Policies - - - General

This paper has been announced in the following NEP Reports:

NEP-ALL-2004-10-30 (All new papers)
NEP-COM-2004-10-30 (Industrial Competition)
NEP-IND-2004-11-22 (Industrial Organization)
NEP-REG-2004-10-30 (Regulation)

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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.:

Tomaso Duso & Damien J. Neven & Lars-Hendrik Röller, 2002. "The Political Economy of European Merger Control: Evidence using Stock Market Data," CIG Working Papers FS IV 02-34, Wissenschaftszentrum Berlin (WZB), Research Unit: Competition and Innovation (CIG). [Downloadable!]
Other versions:
- Duso, Tomaso & Neven, Damien J & Röller, Lars-Hendrik, 2003. "The Political Economy of European Merger Control: Evidence Using Stock Market Data," CEPR Discussion Papers 3880, C.E.P.R. Discussion Papers. [Downloadable!] (restricted)
Paul R. Milgrom & John Roberts, 1985. "Relying on the Information of Interested Parties," Cowles Foundation Discussion Papers 749, Cowles Foundation, Yale University. [Downloadable!]
Other versions:
- Paul Milgrom & John Roberts, 1986. "Relying on the Information of Interested Parties," RAND Journal of Economics, The RAND Corporation, vol. 17(1), pages 18-32, Spring. [Downloadable!] (restricted)
Farrell, Joseph & Shapiro, Carl, 1990. "Horizontal Mergers: An Equilibrium Analysis," American Economic Review, American Economic Association, vol. 80(1), pages 107-26, March. [Downloadable!] (restricted)
Other versions:
- Joseph Farrell and Carl Shapiro., 1988. "Horizontal Mergers: An Equilibrium Analysis," Economics Working Papers 8880, University of California at Berkeley.
- Farrell, J. & Shapiro, C., 1989. "Horizontal Mergers: An Equilibrium Analysis," Papers e-89-3, Stanford - Hoover Institution.
- Farrell, J. & Shapiro, C., 1988. "Horizontal Mergers: An Equilibrium Analysis," Papers 17, Princeton, Woodrow Wilson School - Discussion Paper.
Green, Jerry R & Laffont, Jean-Jacques, 1986. "Partially Verifiable Information and Mechanism Design," Review of Economic Studies, Blackwell Publishing, vol. 53(3), pages 447-56, July. [Downloadable!] (restricted)
Fudenberg, Drew & Tirole, Jean, 1984. "The Fat-Cat Effect, the Puppy-Dog Ploy, and the Lean and Hungry Look," American Economic Review, American Economic Association, vol. 74(2), pages 361-66, May. [Downloadable!] (restricted)

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(explanations, 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.)

Bourjade, Sylvain & Jullien, Bruno, 2004. "Expertise and Bias in Decision Making," MPRA Paper 7251, University Library of Munich, Germany, revised Jan 2007. [Downloadable!]

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