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The Effect of EU Antitrust Investigations and Fines on a Firm’s Valuation

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Author Info
Langus, Gregor
Motta, Massimo

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Abstract

We estimate, using event study techniques, the impact of the main events in an antitrust investigation on a firm’s stock market value. A surprise inspection at the firm’s premises has a strong and statistically significant effect on the firm’s share price, with its cumulative average abnormal return being approximately -2%. Further, we find that a negative Decision by the European Commission results in a cumulative average abnormal return of about -3.3%. Overall, the fine accounts for a relatively small fraction of this loss in value. Finally, if the Court annuls or reduces the fine, this has a positive (+2%) effect on the firm’s valuation.

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Paper provided by C.E.P.R. Discussion Papers in its series CEPR Discussion Papers with number 6176.

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Date of creation: Mar 2007
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Handle: RePEc:cpr:ceprdp:6176

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Related research
Keywords: antitrust deterrence event studies fines

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Find related papers by JEL classification:
K21 - Law and Economics - - Regulation and Business Law - - - Antitrust Law
K42 - Law and Economics - - Legal Procedure, the Legal System, and Illegal Behavior - - - Illegal Behavior and the Enforcement of Law
L4 - Industrial Organization - - Antitrust Issues and Policies

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References listed on IDEAS
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.:
  1. 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!]
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  2. Brown, Stephen J. & Warner, Jerold B., 1980. "Measuring security price performance," Journal of Financial Economics, Elsevier, vol. 8(3), pages 205-258, September. [Downloadable!] (restricted)
  3. Bizjak, John M & Coles, Jeffrey L, 1995. "The Effect of Private Antitrust Litigation on the Stock-Market Valuation of the Firm," American Economic Review, American Economic Association, vol. 85(3), pages 436-61, June. [Downloadable!] (restricted)
  4. A. Craig MacKinlay, 1997. "Event Studies in Economics and Finance," Journal of Economic Literature, American Economic Association, vol. 35(1), pages 13-39, March. [Downloadable!] (restricted)
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This page was last updated on 2008-7-23.

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