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Event Studies and the Analysis of Antitrust

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Author Info
Michael Cichello
Douglas Lamdin
Abstract

A standard tool in economics and finance is the event study in which one examines the impact of an event on stock returns. While hundreds of such studies have been published, the concern here is with a small subset: the use of event studies to examine antitrust issues. After a brief review of the event study technique, we provide a review of the literature that is the nexus of event studies and antitrust. The goal is to not only chronicle the development of this literature and highlight the major findings, but also to comment on important issues concerning implementation of this research method and the interpretation of the results.

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Publisher Info
Article provided by Taylor and Francis Journals in its journal International Journal of the Economics of Business.

Volume (Year): 13 (2006)
Issue (Month): 2 (July)
Pages: 229-245
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Handle: RePEc:taf:ijecbs:v:13:y:2006:i:2:p:229-245

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Related research
Keywords: Antitrust; Empirical Methods; Event Studies; L40;

References listed on IDEAS
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  1. McAfee, R. Preston & Williams, Michael A., 1988. "Can event studies detect anticompetitive mergers?," Economics Letters, Elsevier, vol. 28(2), pages 199-203. [Downloadable!] (restricted)
  2. Robert W. Crandall & Clifford Winston, 2003. "Does Antitrust Policy Improve Consumer Welfare? Assessing the Evidence," Journal of Economic Perspectives, American Economic Association, vol. 17(4), pages 3-26, Fall. [Downloadable!] (restricted)
  3. Brady, Una & M. Feinberg, Robert, 2000. "An examination of stock-price effects of EU merger control policy," International Journal of Industrial Organization, Elsevier, vol. 18(6), pages 885-900, August. [Downloadable!] (restricted)
  4. Eckbo, B. Espen, 1983. "Horizontal mergers, collusion, and stockholder wealth," Journal of Financial Economics, Elsevier, vol. 11(1-4), pages 241-273, April. [Downloadable!] (restricted)
  5. Bittlingmayer, George & Hazlett, Thomas W., 2000. "DOS Kapital: Has antitrust action against Microsoft created value in the computer industry?," Journal of Financial Economics, Elsevier, vol. 55(3), pages 329-359, March. [Downloadable!] (restricted)
  6. Garbade, Kenneth D & Silber, William L & White, Lawrence J, 1982. "Market Reaction to the Filing of Antitrust Suits: An Aggregate and Cross-Sectional Analysis," The Review of Economics and Statistics, MIT Press, vol. 64(4), pages 686-91, November. [Downloadable!] (restricted)
  7. Eckbo, B Espen & Maksimovic, Vojislav & Williams, Joseph, 1990. "Consistent Estimation of Cross-Sectional Models in Event Studies," Review of Financial Studies, Oxford University Press for Society for Financial Studies, vol. 3(3), pages 343-65. [Downloadable!] (restricted)
  8. Eckbo, B Espen, 1992. " Mergers and the Value of Antitrust Deterrence," Journal of Finance, American Finance Association, vol. 47(3), pages 1005-29, July. [Downloadable!] (restricted)
  9. Boardman, Anthony & Vertinsky, Ilan & Whistler, Diana, 1997. "Using information diffusion models to estimate the impacts of regulatory events on publicly traded firms," Journal of Public Economics, Elsevier, vol. 63(2), pages 283-300, January. [Downloadable!] (restricted)
  10. Scott E. Hein, 2004. "Improving Tests of Abnormal Returns by Bootstrapping the Multivariate Regression Model with Event Parameters," Journal of Financial Econometrics, Oxford University Press, vol. 2(3), pages 451-471. [Downloadable!] (restricted)
  11. Eckbo, B Espen & Wier, Peggy, 1985. "Antimerger Policy under the Hart-Scott-Rodino Act: A Reexamination of the Market Power Hypothesis," Journal of Law & Economics, University of Chicago Press, vol. 28(1), pages 119-49, April.
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This page was last updated on 2009-12-21.

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