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Semi Strong Form Efficiency Test of the Nigerian Stock Market: Evidence from Event Study Analysis of Bonus Issues

Author

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  • Charles O. Manasseh

    (Department of Economics, University of Nigeria Nsukka, Enugu State, South East Nigeria,)

  • Chukwuka Kenneth Ozuzu

    (Department of Economics, University of Nigeria Nsukka, Enugu State, South East Nigeria)

  • Jonathan E. Ogbuabor

    (Department of Economics, University of Nigeria Nsukka, Enugu State, South East Nigeria)

Abstract

This study tests the consistency of the Nigerian Stock Market with the efficient market hypothesis (EMH) in the semi-strong form using bonus issues as the information generating event. Using daily data, a total of 121 bonus issues were observed and examined for the period 2002-2006. The stocks which were tested were classified according to the size of their bonus issues and also according to the price of the stock to know the impact of information released on the price of different categories of stock. Using the event study methodology, the market and the market adjusted models as well as the vector auto regression models, the study discovered that information release impacts significantly only in the year 2002. Also, it reveals that small bonus issues responded speedily to bonus issues more than medium and large bonus issues. In addition, the test between penny stocks and blue chips shows that only penny stocks were significantly affected.

Suggested Citation

  • Charles O. Manasseh & Chukwuka Kenneth Ozuzu & Jonathan E. Ogbuabor, 2016. "Semi Strong Form Efficiency Test of the Nigerian Stock Market: Evidence from Event Study Analysis of Bonus Issues," International Journal of Economics and Financial Issues, Econjournals, vol. 6(4), pages 1474-1490.
    • Handle: RePEc:eco:journ1:2016-04-27
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    References listed on IDEAS

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    Cited by:

    1. Nageri Kamaldeen Ibraheem & Abdulkadir Rihanat Idowu, 2019. "Is the Nigerian Stock Market Efficient? Pre and Post 2007-2009 Meltdown Analysis," Studia Universitatis „Vasile Goldis” Arad – Economics Series, Sciendo, vol. 29(3), pages 38-63, September.
    2. Erdas Mehmet Levent, 2019. "Validity of Weak-Form Market Efficiency in Central and Eastern European Countries (CEECs): Evidence from Linear and Nonlinear Unit Root Tests," Review of Economic Perspectives, Sciendo, vol. 19(4), pages 399-428, December.

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    More about this item

    Keywords

    Semi-strong Form; Efficiency; Stock Market; Event Study; Bonus Issues;
    All these keywords.

    JEL classification:

    • G10 - Financial Economics - - General Financial Markets - - - General (includes Measurement and Data)
    • G11 - Financial Economics - - General Financial Markets - - - Portfolio Choice; Investment Decisions
    • G12 - Financial Economics - - General Financial Markets - - - Asset Pricing; Trading Volume; Bond Interest Rates
    • G14 - Financial Economics - - General Financial Markets - - - Information and Market Efficiency; Event Studies; Insider Trading

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