Managerial Decisions and Long-Term Stock Price Performance
AbstractA rapidly growing literature claims to reject the efficient market hypothesis by producing large estimates of long-term abnormal returns following major corporate events. The preferred methodology in this literature is to calculate average multiyear buy-and-hold abnormal returns and conduct inferences via a bootstrapping procedure. We show that this methodology is severely flawed because it assumes independence of multiyear abnormal returns for event firms, producing test statistics that are up to four times too large. After accounting for the positive cross-correlations of event-firm abnormal returns, we find virtually no evidence of reliable abnormal performance for our samples. Copyright 2000 by University of Chicago Press.
Download InfoIf 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.
Bibliographic InfoArticle provided by University of Chicago Press in its journal Journal of Business.
Volume (Year): 73 (2000)
Issue (Month): 3 (July)
Contact details of provider:
Web page: http://www.journals.uchicago.edu/JB/
Other versions of this item:
- Mark L. Mitchell & Erik Stafford, 1997. "Managerial Decisions and Long-Term Stock Price Performance," CRSP working papers, Center for Research in Security Prices, Graduate School of Business, University of Chicago 453, Center for Research in Security Prices, Graduate School of Business, University of Chicago.
You can help add them by filling out this form.
CitEc Project, subscribe to its RSS feed for this item.
This item has more than 25 citations. To prevent cluttering this page, these citations are listed on a separate page. reading list or among the top items on IDEAS.Access and download statisticsgeneral 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: (Journals Division).
If references are entirely missing, you can add them using this form.