Tests for weak form market efficiency in stock prices: Monte Carlo evidence
Efficiency in financial markets is tested by applying variance ratio (VR)tests, but unit root tests are also used by many, sometimes in addition to the VR tests. There is a lack of clarity in the literature about the implication of these test results when they seem to disagree. We distinguish between two different types of predictability, called "structural predictability" and "error predictability". Standard unit root tests pick up structural predictability. VR tests pick up both structural and error predictability.
|Date of creation:||2011|
|Date of revision:|
|Contact details of provider:|| Postal: Alice Fong, Administrator, School of Economics and Finance, Victoria Business School, Victoria University of Wellington, PO Box 600 Wellington, New Zealand|
Phone: +64 (4) 463-5353
Fax: +64 (4) 463-5014
Web page: http://www.victoria.ac.nz/sef
More information through EDIRC
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.:
- Paresh Kumar Narayan & Russell Smyth, 2004. "Is South Korea's stock market efficient?," Applied Economics Letters, Taylor & Francis Journals, vol. 11(11), pages 707-710.
- Andrew W. Lo & A. Craig MacKinlay, 1987.
"Stock Market Prices Do Not Follow Random Walks: Evidence From a Simple Specification Test,"
NBER Working Papers
2168, National Bureau of Economic Research, Inc.
- Andrew W. Lo, A. Craig MacKinlay, 1988. "Stock Market Prices do not Follow Random Walks: Evidence from a Simple Specification Test," Review of Financial Studies, Society for Financial Studies, vol. 1(1), pages 41-66.
- Vasudeva Murthy & Kenneth Washer & John Wingender, 2011. "Are stock prices in the US nonstationary? Evidence from contemporary unit root tests," Applied Financial Economics, Taylor & Francis Journals, vol. 21(22), pages 1703-1709.
- Chow, K. Victor & Denning, Karen C., 1993.
"A simple multiple variance ratio test,"
Journal of Econometrics,
Elsevier, vol. 58(3), pages 385-401, August.
- Tom Doan, . "CHOWDENNING: RATS procedure to perform Chow-Denning multiple variance ratio test," Statistical Software Components RTS00035, Boston College Department of Economics.
- Zeynel Abidin Ozdemir, 2008. "Efficient market hypothesis: evidence from a small open-economy," Applied Economics, Taylor & Francis Journals, vol. 40(5), pages 633-641.
When requesting a correction, please mention this item's handle: RePEc:vuw:vuwecf:1993. 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: (Library Technology Services)
If references are entirely missing, you can add them using this form.