IDEAS home Printed from https://ideas.repec.org/
MyIDEAS: Login to save this paper or follow this series

Event Studies and the Law - Part I: Technique and Corporate Litigation

  • Roberta Romano

    ()

    (Law School)

  • Sanjai Bhagat

    ()

    (Leeds School of Business)

Registered author(s):

    Event studies are among the most successful uses of econometrics in policy analysis. By providing an anchor for measuring the impact of events on investor wealth, the methodology offers a fruitful means for evaluating the welfare implications of private and government actions. This paper is the first in a set of two papers that review the use and impact of the event study methodology in the legal domain. This paper begins by briefly reviewing the event study methodology and its strengths and limitations for policy analysis. It then reviews in detail how event studies have been used to evaluate the wealth effects of corporate litigation: Defendants experience economically-meaningful and statistically-significant wealth losses upon the filing of the suit, whereas plaintiff firms experience no significant wealth effects upon filing a lawsuit. Also, there is a significant wealth increase for defendant firms when they settle a suit with another firm, in contrast to other types of plaintiffs, and in contrast to the settling plaintiff firms. These findings suggest that, at a minimum, lawsuits are not a value-enhancing way for corporations to settle their disagreements with other corporations. In addition, the market appears to impose a higher sanction on firms than actual criminal sanctions, and reputational losses are of equal magnitude for civil fines as criminal ones. The paper concludes with some recommendations for researchers: The standards for conducting an event study are well established. Researchers can increase the power of an event study by increasing the sample size, and by narrowing the public announcement period to as short a time-frame as possible. The companion paper reviews the use of event studies in corporate law and regulation.

    If you experience problems downloading a file, check if you have the proper application to view it first. In case of further problems read the IDEAS help page. Note that these files are not on the IDEAS site. Please be patient as the files may be large.

    File URL: http://papers.ssrn.com/sol3/papers.cfm?abstract_id=268283
    Download Restriction: no

    Paper provided by Yale School of Management in its series Yale School of Management Working Papers with number ysm182.

    as
    in new window

    Length:
    Date of creation: 01 May 2001
    Date of revision:
    Handle: RePEc:ysm:somwrk:ysm182
    Contact details of provider: Web page: http://icf.som.yale.edu/

    More information through EDIRC

    No references listed on IDEAS
    You can help add them by filling out this form.

    This item is not listed on Wikipedia, on a reading list or among the top items on IDEAS.

    When requesting a correction, please mention this item's handle: RePEc:ysm:somwrk:ysm182. 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 you have authored this item and are not yet registered with RePEc, we encourage you to do it here. This allows to link your profile to this item. It also allows you to accept potential citations to this item that we are uncertain about.

    If references are entirely missing, you can add them using this form.

    If the full references list an item that is present in RePEc, but the system did not link to it, you can help with this form.

    If you know of missing items citing this one, you can help us creating those links by adding the relevant references in the same way as above, for each refering item. If you are a registered author of this item, you may also want to check the "citations" tab in your profile, as there may be some citations waiting for confirmation.

    Please note that corrections may take a couple of weeks to filter through the various RePEc services.

    This information is provided to you by IDEAS at the Research Division of the Federal Reserve Bank of St. Louis using RePEc data.