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The Efficiency Market Theory: A Case of Commercial Banks Stocks in Nigeria

Author

Listed:
  • Mesagan Peter Ekundayo

    (Department of Economics University of Lagos)

  • Amadi Nkem Agatha

    (Department of Economics University of Lagos)

Abstract

This study focused on testing the efficient market theory in Nigeria. The quest to stimulate research interest in testing this theory using the stock price before announcement of dividends and the stock price after the announcement of dividends motivates the conduct of this study. To this end, a pilot experiment is conducted using the stock prices of five commercial banks that are listed on the Nigerian Stock Exchange market. The sample are selected based on the fact that the selected banks have concluded their financial year on or before the end of September 2017. In the result, it was observed that that announcement did not make any significant difference between the stock prices in the banking sector in Nigeria and therefore conclude that the efficient market theory does not hold in the Nigerian Stock Exchange market. We recommend that there should be consistent sensitization of investors by banks listed on the Nigerian Stock Exchange market and stock broking firms to guide them in making informed investment decisions make it difficult for individual investors and agents to ‘beat the market’.

Suggested Citation

  • Mesagan Peter Ekundayo & Amadi Nkem Agatha, 2017. "The Efficiency Market Theory: A Case of Commercial Banks Stocks in Nigeria," Ovidius University Annals, Economic Sciences Series, Ovidius University of Constantza, Faculty of Economic Sciences, vol. 0(2), pages 583-587, December.
    • Handle: RePEc:ovi:oviste:v:xvii:y:2017:i:2:p:583-587
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    Cited by:

    1. Ekundayo P. Mesagan & Isaac A. Ogbuji & Yasiru O. Alimi & Anthonia T. Odeleye, 2019. "Growth Effects of Financial Market Instruments: The Ghanaian Experience," Working Papers 19/095, European Xtramile Centre of African Studies (EXCAS).
    2. Yusuf, Ismaila Akanni & Salaudeen, Mohammed Bashir & Agbonrofo, Hope, 2021. "Social and Economic Drivers of Stock Market Performance in Nigeria," MPRA Paper 111086, University Library of Munich, Germany.
    3. Ismaila Akanni Yusuf & Mohammed Bashir Salaudeen & Hope Agbonrofo, 2021. "Social and Economic Drivers of Stock Market Performance in Nigeria," Journal of Economic Impact, Science Impact Publishers, vol. 3(3), pages 137-143.
    4. Yusuf, Ismaila Akanni & Mesagan, Ekundayo Peter & Amadi, Agatha Nkem, 2020. "Effect of financial deepening on stock market returns: The case of military and democratic post-SAP regimes in Nigeria," BizEcons Quarterly, Strides Educational Foundation, vol. 6, pages 3-21.
    5. Ismaila Akanni Yusuf & Agatha Nkem Amadi & Mohammed Bashir Salaudeen, 2020. "Effects of Risk Culture and Appetite on Effective Risk Management in Nigerian Banks: Case Study of United Bank for Africa Plc," Academic Journal of Economic Studies, Faculty of Finance, Banking and Accountancy Bucharest,"Dimitrie Cantemir" Christian University Bucharest, vol. 6(2), pages 81-87, June.
    6. Ismaila Akanni Yusuf & Mohammed Bashir Salaudeen & Isaac Azubuike Ogbuji, 2022. "Exchange Rate Fluctuation and Inflation Nexus in Nigeria: The Case of Recent Recession," Journal of Economic Impact, Science Impact Publishers, vol. 4(1), pages 81-87.

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    More about this item

    Keywords

    Efficient Market Theory; Stock Price; Commercial Banks; Nigeria Stock Exchange;
    All these keywords.

    JEL classification:

    • C22 - Mathematical and Quantitative Methods - - Single Equation Models; Single Variables - - - Time-Series Models; Dynamic Quantile Regressions; Dynamic Treatment Effect Models; Diffusion Processes
    • G14 - Financial Economics - - General Financial Markets - - - Information and Market Efficiency; Event Studies; Insider Trading
    • H54 - Public Economics - - National Government Expenditures and Related Policies - - - Infrastructures
    • P34 - Political Economy and Comparative Economic Systems - - Socialist Institutions and Their Transitions - - - Finance

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