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Event Studies and the Law: Part II - Empirical Studies of Corporate Law


  • Roberta Romano

    () (Law School)

  • Sanjai Bhagat

    () (Leeds School of Business)


This paper is the second part of a review of the event study methodology, which has proved to be one of the most successful uses of econometrics in policy analysis. In this part we focus on the methodology's application to corporate law and corporate governance issues. Event studies have played an important role in the making of corporate law and in corporate law scholarship. The reason for this input is twofold. First, there is a match between the methodology and subject matter: the goal of corporate law is to increase shareholder wealth and event studies provide a metric for measurement of the impact upon stock prices of policy decisions. Second, because the participants in corporate law debates share the objective of corporate law, to adopt policies that enhance shareholder wealth, their disagreements are over the means to achieve that end. Hence, the discourse can be empirically informed. The paper concludes by sketching the methodology's use in evaluating the economic effects of regulation. While event studies' usefulness for policy analysis is now familiar in the corporate law setting, we hope that our two-part review will suggest appropriate applications to other fields of law.

Suggested Citation

  • Roberta Romano & Sanjai Bhagat, 2001. "Event Studies and the Law: Part II - Empirical Studies of Corporate Law," Yale School of Management Working Papers ysm183, Yale School of Management.
  • Handle: RePEc:ysm:somwrk:ysm183

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    References listed on IDEAS

    1. Edwin J. Elton & Martin J. Gruber & Christopher R. Blake, 2003. "Incentive Fees and Mutual Funds," Journal of Finance, American Finance Association, vol. 58(2), pages 779-804, April.
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    Cited by:

    1. Oren Bar-Gill & Michal Barzuza & Lucian Bebchuk, 2006. "The Market for Corporate Law," Journal of Institutional and Theoretical Economics (JITE), Mohr Siebeck, Tübingen, vol. 162(1), pages 134-160, March.
    2. Sanjai Bhagat & Roberta Romano, 2001. "Event Studies and the Law - Part I: Technique and Corporate Litigation," Yale School of Management Working Papers amz2475, Yale School of Management, revised 01 Jan 2002.
    3. Bebchuk, Lucian Arye & Cohen, Alma, 2002. "Firms' Decisions on Where to Incorporate," CEPR Discussion Papers 3514, C.E.P.R. Discussion Papers.

    More about this item

    JEL classification:

    • G30 - Financial Economics - - Corporate Finance and Governance - - - General
    • K22 - Law and Economics - - Regulation and Business Law - - - Business and Securities Law
    • G14 - Financial Economics - - General Financial Markets - - - Information and Market Efficiency; Event Studies; Insider Trading


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