Stock Price Response to Earnings Announcements: Evidence from the Nigerian Stock Market
This paper examines the stock market reaction to annual earnings information releases using data on the Nigerian Stock Exchange. Using the event study method, the speed of reaction of the market to annual earnings information releases for a sample of 16 firms listed on the exchange is tested. Significant abnormal price reactions around earnings announcements suggest the earnings announcements contain value-relevant information. We find that the magnitude of the cumulative abnormal returns is dominated by significant reactions 20 days before the earnings release date which suggests that a portion of the market reaction may be due to private acquisition and, possibly, abuse of information by insiders. The persistent downward drift of the cumulative abnormal returns, 20 days after the announcement, is inconsistent with the efficient markets hypothesis, and therefore suggests that the Nigerian stock market does not efficiently adjust to earnings information for the sample firms within the study period.
|Date of creation:||15 Mar 2011|
|Date of revision:||16 May 2011|
|Contact details of provider:|| Postal: Ludwigstraße 33, D-80539 Munich, Germany|
Web page: https://mpra.ub.uni-muenchen.de
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.:
- Rafael Porta & Florencio Lopez-De-Silanes & Andrei Shleifer, 2006.
"What Works in Securities Laws?,"
Journal of Finance,
American Finance Association, vol. 61(1), pages 1-32, 02.
- Rafael LaPorta & Florencio Lopez-de-Silanes & Andrei Shleifer, "undated". "What Works in Securities Laws?," Working Paper 19491, Harvard University OpenScholar.
- Rafael La Porta & Florencio Lopez-de-Silane & Andrei Shleifer, 2003. "What Works in Securities Law?," NBER Working Papers 9882, National Bureau of Economic Research, Inc.
- La Porta, Rafael & Lopez-de-Silanes, Florencio & Shleifer, Andrei, 2006. "What Works in Securities Laws?," Scholarly Articles 27867135, Harvard University Department of Economics.
- Harvey, Campbell R, 1995. "Predictable Risk and Returns in Emerging Markets," Review of Financial Studies, Society for Financial Studies, vol. 8(3), pages 773-816.
- Campbell R. Harvey, 1994. "Predictable Risk and Returns in Emerging Markets," NBER Working Papers 4621, National Bureau of Economic Research, Inc.
- Charles Komla Adjasi & Charles Amo Yartey, 2007. "Stock Market Development in Sub-Saharan Africa; Critical Issues and Challenges," IMF Working Papers 07/209, International Monetary Fund.
- David Hirshleifer, 2001. "Investor Psychology and Asset Pricing," Journal of Finance, American Finance Association, vol. 56(4), pages 1533-1597, 08.
- Hirshleifer, David, 2001. "Investor Psychology and Asset Pricing," MPRA Paper 5300, University Library of Munich, Germany.
- Ederington, Louis H. & Lee, Jae Ha, 1995. "The Short-Run Dynamics of the Price Adjustment to New Information," Journal of Financial and Quantitative Analysis, Cambridge University Press, vol. 30(01), pages 117-134, March.
- Doron Avramov & Tarun Chordia & Amit Goyal, 2006. "Liquidity and Autocorrelations in Individual Stock Returns," Journal of Finance, American Finance Association, vol. 61(5), pages 2365-2394, October.
- Shinichi Hirota & Shyam Sunder, 2002. "Stock Market as a 'Beauty Contest': Investor Beliefs and Price Bubbles sans Dividend Anchors," Yale School of Management Working Papers ysm2, Yale School of Management.
- Shinichi Hirota & Shyam NMI Sunder, 2002. "Stock Market as a 'Beauty Contest': Investor Beliefs and Price Bubbles sans Dividend Anchors," Yale School of Management Working Papers ysm271, Yale School of Management.
- Chaker Aloui, 2003. "Long-Range Dependence in Daily Volatility on Tunisian Stock Market," Working Papers 0340, Economic Research Forum, revised 12 2003.
- Jeffrey Ng & Tjomme O. Rusticus & Rodrigo S. Verdi, 2008. "Implications of Transaction Costs for the Post-Earnings Announcement Drift," Journal of Accounting Research, Wiley Blackwell, vol. 46(3), pages 661-696, 06.
- Fama, Eugene F, 1970. "Efficient Capital Markets: A Review of Theory and Empirical Work," Journal of Finance, American Finance Association, vol. 25(2), pages 383-417, May.
- A. Craig MacKinlay, 1997. "Event Studies in Economics and Finance," Journal of Economic Literature, American Economic Association, vol. 35(1), pages 13-39, March.
- William M. Cready & Umit G. Gurun, 2010. "Aggregate Market Reaction to Earnings Announcements," Journal of Accounting Research, Wiley Blackwell, vol. 48(2), pages 289-334, 05.
- Michael J. Fleming & Eli M. Remolona, 1999. "Price Formation and Liquidity in the U.S. Treasury Market: The Response to Public Information," Journal of Finance, American Finance Association, vol. 54(5), pages 1901-1915, October. Full references (including those not matched with items on IDEAS)
When requesting a correction, please mention this item's handle: RePEc:pra:mprapa:33931. 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: (Joachim Winter)
If references are entirely missing, you can add them using this form.