Post-Acquisition Performance in the Short and Long Run Evidence from the Copenhagen Stock Exchange 1993-1997
This paper investigates the short-run price adjustment around the acquisition announce-ment and the long-run upward bias of the cross-sectional average buy-and-hold returns. We apply the geometric Brownian motion model to decompose the cross-sectional ave r-age long-run returns into mean components and volatility components. The decomposi-tion is necessary in order to interpret security performance correctly using the measure of wealth relatives. This procedure is useful for any studies of long-run security perform-ance. The most surprising finding is that the long-horizon abnormal return after three years is not significantly different from zero. This implies that the acquiring firms do not under perform significantly compared to the market. That result stands in contrast to findings of other studies, and it may reflect that earlier studies do not adjust for the vola-tility component. This indicates that the market efficiency hypothesis is intact in the long run. It is only in the very short run, i.e. a few days around the acquisition announcements, that the market makes a significant adjustment to uphold the efficiency hypothesis.
|Date of creation:||01 Oct 1999|
|Contact details of provider:|| Postal: Department of Finance, Copenhagen Business School, Solbjerg Plads 3, A5, DK-2000 Frederiksberg, Denmark|
Phone: +45 3815 3815
Web page: http://www.cbs.dk/departments/finance/
More information through EDIRC
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.
- Jensen, Michael C. & Ruback, Richard S., 1983. "The market for corporate control : The scientific evidence," Journal of Financial Economics, Elsevier, vol. 11(1-4), pages 5-50, April.
- Mitchell, Mark L & Stafford, Erik, 2000.
"Managerial Decisions and Long-Term Stock Price Performance,"
The Journal of Business,
University of Chicago Press, vol. 73(3), pages 287-329, July.
- Mark L. Mitchell & Erik Stafford, 1997. "Managerial Decisions and Long-Term Stock Price Performance," CRSP working papers 453, Center for Research in Security Prices, Graduate School of Business, University of Chicago.
- Loughran, Tim & Ritter, Jay R, 1995. " The New Issues Puzzle," Journal of Finance, American Finance Association, vol. 50(1), pages 23-51, March.
- Bradley, Michael & Desai, Anand & Kim, E. Han, 1983. "The rationale behind interfirm tender offers : Information or synergy?," Journal of Financial Economics, Elsevier, vol. 11(1-4), pages 183-206, April.
- Barber, Brad M. & Lyon, John D., 1997. "Detecting long-run abnormal stock returns: The empirical power and specification of test statistics," Journal of Financial Economics, Elsevier, vol. 43(3), pages 341-372, March.
- De Bondt, Werner F M & Thaler, Richard, 1985. " Does the Stock Market Overreact?," Journal of Finance, American Finance Association, vol. 40(3), pages 793-805, July.
- Paul Draper & Krishna Paudyal, 1999. "Corporate Takeovers: Mode of Payment, Returns and Trading Activity," Journal of Business Finance & Accounting, Wiley Blackwell, vol. 26(5&6), pages 521-558.
- Jurgen A. Doornik & Henrik Hansen, 2008. "An Omnibus Test for Univariate and Multivariate Normality," Oxford Bulletin of Economics and Statistics, Department of Economics, University of Oxford, vol. 70(s1), pages 927-939, December.
- Jurgen A Doornik & Henrik Hansen, "undated". "An omnibus test for univariate and multivariate normalit," Economics Papers W4&91., Economics Group, Nuffield College, University of Oxford.
- Linda Canina & Roni Michaely & Richard Thaler & Kent Womack, 1998. "Caveat Compounder: A Warning about Using the Daily CRSP Equal-Weighted Index to Compute Long-Run Excess Returns," Journal of Finance, American Finance Association, vol. 53(1), pages 403-416, 02.
- Michaely, Roni & Thaler, Richard H & Womack, Kent L, 1995. " Price Reactions to Dividend Initiations and Omissions: Overreaction or Drift?," Journal of Finance, American Finance Association, vol. 50(2), pages 573-608, June.
- Roni Michaely & Richard H. Thaler & Kent Womack, 1994. "Price Reactions to Dividend Initiations and Omissions: Overreaction or Drift?," NBER Working Papers 4778, National Bureau of Economic Research, Inc.
- Sung C. Bae & Sivagnanam Sakthivel, 2000. "An Empirical Analysis of Exchange Ratio Determination Models for Merger: A Note," Journal of Business Finance & Accounting, Wiley Blackwell, vol. 27(3-4), pages 511-521.
- Sung C. Bae & Sivagnanam Sakthivel, 2000. "An Empirical Analysis of Exchange Ratio Determination Models for Merger: A Note," Journal of Business Finance & Accounting, Wiley Blackwell, vol. 27(3&4), pages 511-521.
- Franks, Julian R & Harris, Robert & Mayer, Colin, 1987. "Means of Payment in Takeovers: Results for the UK and US," CEPR Discussion Papers 200, C.E.P.R. Discussion Papers.
- Robert S. Harris & Julian Franks & Colin Mayer, 1987. "Means of Payment in Takeovers: Results for the U.K. and U.S," NBER Working Papers 2456, National Bureau of Economic Research, Inc.
- Agrawal, Anup & Jaffe, Jeffrey F & Mandelker, Gershon N, 1992. " The Post-merger Performance of Acquiring Firms: A Re-examination of an Anomaly," Journal of Finance, American Finance Association, vol. 47(4), pages 1605-1621, September.
- Conrad, Jennifer & Kaul, Gautam, 1993. " Long-Term Market Overreaction or Biases in Computed Returns?," Journal of Finance, American Finance Association, vol. 48(1), pages 39-63, March.
- repec:bla:jbfnac:v:27:y:2000:i:5&6:p:523-554 is not listed on IDEAS
- Robert W. Faff & David Hillier & Joseph Hillier, 2000. "Time Varying Beta Risk: An Analysis of Alternative Modelling Techniques," Journal of Business Finance & Accounting, Wiley Blackwell, vol. 27(5&6), pages 523-554. Full references (including those not matched with items on IDEAS)
When requesting a correction, please mention this item's handle: RePEc:hhs:cbsfin:2000_004. 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: (Lars Nondal)
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.