The Impact of Non-Normality and Misspecification on Merger Event Studies
Financial event studies using daily stock returns are frequently used to evaluate antitrust policy and to 'predict' the consequences of mergers. Although there is ample evidence that daily stock returns are not normally distributed, traditional asymptotic results are often used for hypothesis testing. We suggest some general results concerning the conditions under which using ±1.96 as critical values for hypothesis testing under or over state the true significance levels. Further, we investigate the cause of non-normal event study residuals and find that a possible alternative explanation to one in which non-normality of residuals is the consequence of omitted events.
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.
As the access to this document is restricted, you may want to look for a different version under "Related research" (further below) or search for a different version of it.
Volume (Year): 13 (2006)
Issue (Month): 2 ()
|Contact details of provider:|| Web page: http://www.tandfonline.com/CIJB20|
|Order Information:||Web: http://www.tandfonline.com/pricing/journal/CIJB20|
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.:
- Brown, Stephen J. & Warner, Jerold B., 1985. "Using daily stock returns : The case of event studies," Journal of Financial Economics, Elsevier, vol. 14(1), pages 3-31, March.
- Cox, Alan J & Portes, Jonathan, 1998. "Mergers in Regulated Industries: The Uses and Abuses of Event Studies," Journal of Regulatory Economics, Springer, vol. 14(3), pages 281-304, November.
- Amado Peiro, 2002. "Skewness in individual stocks at different investment horizons," Quantitative Finance, Taylor & Francis Journals, vol. 2(2), pages 139-146.
- Kothari, S. P. & Shanken, Jay, 1997. "Book-to-market, dividend yield, and expected market returns: A time-series analysis," Journal of Financial Economics, Elsevier, vol. 44(2), pages 169-203, May.
- Corrado, Charles J. & Zivney, Terry L., 1992. "The Specification and Power of the Sign Test in Event Study Hypothesis Tests Using Daily Stock Returns," Journal of Financial and Quantitative Analysis, Cambridge University Press, vol. 27(03), pages 465-478, September.
- 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.
- Brown, Stephen J. & Warner, Jerold B., 1980. "Measuring security price performance," Journal of Financial Economics, Elsevier, vol. 8(3), pages 205-258, September.
- Cable, John & Holland, Kevin, 1999. "Regression vs. non-regression models of normal returns: implications for event studies," Economics Letters, Elsevier, vol. 64(1), pages 81-85, July.
- Corrado, Charles J., 1989. "A nonparametric test for abnormal security-price performance in event studies," Journal of Financial Economics, Elsevier, vol. 23(2), pages 385-395, August.
- Ana Paula Serra, 2002. "Event Study Tests: A brief survey," FEP Working Papers 117, Universidade do Porto, Faculdade de Economia do Porto.
When requesting a correction, please mention this item's handle: RePEc:taf:ijecbs:v:13:y:2006:i:2:p:247-264. 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: (Michael McNulty)
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.