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Testing the Weak-form Market Efficiency and the Day of the Week Effects of some African Countries

Author

Listed:
  • Michael Batuo Enowbi
  • Francesco Guidi
  • Kupukile Mlambo

    (African Development Bank)

Abstract

The aims of this work are twofold. On the one hand, it aims to find evidence supporting the presence of the weak form efficiency of several emerging African stock markets by using both parametric as well as non parametric tests. The results indicate that none of the markets are characterised by random walks with the exception of the South African stock market. On the other hand, this study aims to detect the presence of the day of the week effects of these African stock markets. Results show the existence of day of the week effects, that is, the typical negative Monday and Friday positive effects in several stock markets.

Suggested Citation

  • Michael Batuo Enowbi & Francesco Guidi & Kupukile Mlambo, 2010. "Testing the Weak-form Market Efficiency and the Day of the Week Effects of some African Countries," The African Finance Journal, Africagrowth Institute, vol. 12(Conferenc), pages 1-26.
    • Handle: RePEc:afj:journl:v:12:y:2010:i:conference:p:1-26
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    Cited by:

    1. Dumitriu, Ramona & Stefanescu, Razvan, 2013. "DOW effects in returns and in volatility of stock markets during quiet and turbulent times," MPRA Paper 47218, University Library of Munich, Germany, revised 02 Apr 2013.
    2. David de Villiers & Natalya Apopo & Andrew Phiri & David McMillan, 2020. "Unobserved structural shifts and asymmetries in the random walk model for stock returns in African frontier markets," Cogent Economics & Finance, Taylor & Francis Journals, vol. 8(1), pages 1769348-176, January.
    3. Saliha Theiri & Abdessatar Ati, 2020. "Weak Form of Efficiency Hypotheses: Empirical Modeling With Box ¨CPierce, ADF and ARCH Tests," International Journal of Financial Research, International Journal of Financial Research, Sciedu Press, vol. 11(5), pages 137-149, October.
    4. Balaban, Ercan & Ozgen, Tolga & Karidis, Socrates, 2018. "Intraday and interday distribution of stock returns and their asymmetric conditional volatility: Firm-level evidence," Physica A: Statistical Mechanics and its Applications, Elsevier, vol. 503(C), pages 905-915.
    5. Pourakin Djarius Dieudonné BAMA, 2020. "Portfolio Management on an Emerging Market: Dynamic Strategy or Passive Strategy?," Business and Management Studies, Redfame publishing, vol. 6(2), pages 1526-1526, December.

    More about this item

    Keywords

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    JEL classification:

    • G14 - Financial Economics - - General Financial Markets - - - Information and Market Efficiency; Event Studies; Insider Trading
    • G15 - Financial Economics - - General Financial Markets - - - International Financial Markets

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