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Random Walks and Market Efficiency Tests: Evidence from Emerging Equity Markets

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  • Karemera, David
  • Ojah, Kalu
  • Cole, John A

Abstract

We use the multiple variance-ratio test of Chow and Denning (1993) to examine the stochastic properties of local currency- and US dollar-based equity returns in 15 emerging capital markets. The technique is based on the Studentized Maximum Modulus distribution and provides a multiple statistical comparison of variance-ratios, with control of the joint-test's size. We find that the random walk model is consistent with the dynamics of returns in most of the emerging markets analyzed, which contrasts many random walk test results documented with the use of single variance-ratio techniques. Further, a runs test suggests that most of the emerging markets are weak-form efficient. Overall, our results suggest that investors are unlikely to make systematic nonzero profit by using past information in many of the examined markets, thus, investors should predicate their investment strategies on the assumption of random walks. Additionally, our results suggest exchange rate matters in returns' dynamics determination for some of the emerging equity markets we analyzed. Copyright 1999 by Kluwer Academic Publishers

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Bibliographic Info

Article provided by Springer in its journal Review of Quantitative Finance and Accounting.

Volume (Year): 13 (1999)
Issue (Month): 2 (September)
Pages: 171-88

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Handle: RePEc:kap:rqfnac:v:13:y:1999:i:2:p:171-88

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Web page: http://springerlink.metapress.com/link.asp?id=102990

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Cited by:
  1. Krzysztof Kompa & Aleksandra Matuszewska-Janica, 2009. "Efficiency of the Warsaw Stock Exchange: Analysis of Selected Properties," International Advances in Economic Research, Springer, vol. 15(1), pages 59-70, February.
  2. Dobija, Dorota & Klimczak, Karol Marek, 2010. "Development of accounting in Poland: Market efficiency and the value relevance of reported earnings," The International Journal of Accounting, Elsevier, vol. 45(3), pages 356-374, September.
  3. Francesco Guidi & Rakesh Gupta, 2011. "Are ASEAN stock market efficient? Evidence from univariate and multivariate variance ratio tests," Discussion Papers in Finance finance:201113, Griffith University, Department of Accounting, Finance and Economics.
  4. Felix Schindler, 2013. "Predictability and Persistence of the Price Movements of the S&P/Case-Shiller House Price Indices," The Journal of Real Estate Finance and Economics, Springer, vol. 46(1), pages 44-90, January.
  5. Mobarek, Asma & Fiorante, Angelo, 2014. "The prospects of BRIC countries: Testing weak-form market efficiency," Research in International Business and Finance, Elsevier, vol. 30(C), pages 217-232.
  6. Amélie Charles & Olivier Darné, 2009. "Variance-Ratio Tests Of Random Walk: An Overview," Journal of Economic Surveys, Wiley Blackwell, vol. 23(3), pages 503-527, 07.
  7. Andrew C. Worthington & Helen Higgs, 2003. "Tests of random walks and market efficiency in Latin American stock markets: An empirical note," School of Economics and Finance Discussion Papers and Working Papers Series 157, School of Economics and Finance, Queensland University of Technology.
  8. Appiah-Kusi, Joe & Menyah, Kojo, 2003. "Return predictability in African stock markets," Review of Financial Economics, Elsevier, vol. 12(3), pages 247-270.
  9. Chang, Eui Jung & Lima, Eduardo Jose Araujo & Tabak, Benjamin Miranda, 2004. "Testing for predictability in emerging equity markets," Emerging Markets Review, Elsevier, vol. 5(3), pages 295-316, September.
  10. Abdul Haque & Hung-Chun Liu & Fakhar-Un-Nisa, 2011. "Testing the Weak Form Efficiency of Pakistani Stock Market (2000–2010)," International Journal of Economics and Financial Issues, Econjournals, vol. 1(4), pages 153-162.
  11. Assaf, A., 2006. "Dependence and mean reversion in stock prices: The case of the MENA region," Research in International Business and Finance, Elsevier, vol. 20(3), pages 286-304, September.
  12. Benjamas Jirasakuldech & Donna Dudney & Thomas Zorn & John Geppert, 2011. "Financial disclosure, investor protection and stock market behavior: an international comparison," Review of Quantitative Finance and Accounting, Springer, vol. 37(2), pages 181-205, August.
  13. Felix Schindler, 2014. "Persistence and Predictability in UK House Price Movements," The Journal of Real Estate Finance and Economics, Springer, vol. 48(1), pages 132-163, January.
  14. Andrew C. Worthington & Helen Higgs, 2003. "Weak-form market efficiency in European emerging and developed stock markets," School of Economics and Finance Discussion Papers and Working Papers Series 159, School of Economics and Finance, Queensland University of Technology.
  15. Howard, Stacia & Craigwell, Roland, 2010. "Convergence of Caribbean Stock Exchanges," MPRA Paper 40930, University Library of Munich, Germany.
  16. Amira Akl Ahmed, 2014. "Evolving and relative efficiency of MENA stock markets: evidence from rolling joint variance ratio tests," Ensayos Revista de Economia, Universidad Autonoma de Nuevo Leon, Facultad de Economia, vol. 0(1), pages 91-126, May.

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