IDEAS home Printed from https://ideas.repec.org/a/ovi/oviste/vxviiy2017i2p583-587.html
   My bibliography  Save this article

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
    as

    Download full text from publisher

    File URL: http://stec.univ-ovidius.ro/html/anale/RO/2017-2/Section%20V/17.pdf
    Download Restriction: no
    ---><---

    References listed on IDEAS

    as
    1. Zheng Yang & Anthony H. Tu & Yong Zeng, 2014. "Dynamic linkages between Asian stock prices and exchange rates: new evidence from causality in quantiles," Applied Economics, Taylor & Francis Journals, vol. 46(11), pages 1184-1201, April.
    2. Gómez-Baggethun, Erik & de Groot, Rudolf & Lomas, Pedro L. & Montes, Carlos, 2010. "The history of ecosystem services in economic theory and practice: From early notions to markets and payment schemes," Ecological Economics, Elsevier, vol. 69(6), pages 1209-1218, April.
    3. Thomas Piketty & Gabriel Zucman, 2014. "Capital is Back: Wealth-Income Ratios in Rich Countries 1700–2010," The Quarterly Journal of Economics, President and Fellows of Harvard College, vol. 129(3), pages 1255-1310.
    4. Fama, Eugene F, 1970. "Multiperiod Consumption-Investment Decisions," American Economic Review, American Economic Association, vol. 60(1), pages 163-174, March.
    5. Adeusi S.O & Azeez B.A, 2013. "Impact of Capital Market Development on the Nigerian Economy: A Post-SAP Analysis," Journal of Economics and Behavioral Studies, AMH International, vol. 5(1), pages 1-7.
    6. Franck Jovanovic & Stelios Andreadakis & Christophe Schinckus, 2016. "Efficient Market Hypothesis and Fraud on the Market Theory A New Perspective for Class Actions," Post-Print hal-03528923, HAL.
    7. repec:hal:pseose:halshs-01109372 is not listed on IDEAS
    8. M. N. Khan & N. Tantisantiwong & S. G. M. Fifield & D. M. Power, 2015. "The relationship between South Asian stock returns and macroeconomic variables," Applied Economics, Taylor & Francis Journals, vol. 47(13), pages 1298-1313, March.
    9. John C. Anyanwu & Nadege D. Yameogo, 2015. "What Drives Foreign Direct Investments into West Africa? An Empirical Investigation," African Development Review, African Development Bank, vol. 27(3), pages 199-215, September.
    10. Fama, Eugene F, 1970. "Efficient Capital Markets: A Review of Theory and Empirical Work," Journal of Finance, American Finance Association, vol. 25(2), pages 383-417, May.
    11. Ibrahim D. Raheem & Mutiu Abimbola Oyinlola, 2017. "Savings-investment-financial development trilogy: evidence from SSA," Journal of Financial Economic Policy, Emerald Group Publishing Limited, vol. 9(1), pages 20-33, April.
    12. Jovanovic, Franck & Andreadakis, Stelios & Schinckus, Christophe, 2016. "Efficient market hypothesis and fraud on the market theory a new perspective for class actions," Research in International Business and Finance, Elsevier, vol. 38(C), pages 177-190.
    Full references (including those not matched with items on IDEAS)

    Citations

    Citations are extracted by the CitEc Project, subscribe to its RSS feed for this item.
    as


    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.

    Most related items

    These are the items that most often cite the same works as this one and are cited by the same works as this one.
    1. Nicolas Brisset, 2018. "Models as speech acts: the telling case of financial models," Journal of Economic Methodology, Taylor & Francis Journals, vol. 25(1), pages 21-41, January.
    2. Jovanovic, Franck & Schinckus, Christophe, 2017. "Econophysics and Financial Economics: An Emerging Dialogue," OUP Catalogue, Oxford University Press, number 9780190205034.
    3. Truzaar Dordi & Olaf Weber, 2019. "The Impact of Divestment Announcements on the Share Price of Fossil Fuel Stocks," Sustainability, MDPI, vol. 11(11), pages 1-20, June.
    4. Anderloni, Luisa & Tanda, Alessandra, 2017. "Green energy companies: Stock performance and IPO returns," Research in International Business and Finance, Elsevier, vol. 39(PA), pages 546-552.
    5. Mohammad Arashi & Mohammad Mahdi Rounaghi, 2022. "Analysis of market efficiency and fractal feature of NASDAQ stock exchange: Time series modeling and forecasting of stock index using ARMA-GARCH model," Future Business Journal, Springer, vol. 8(1), pages 1-12, December.
    6. Foort Hamelink, 2001. "Nonlinear analysis for forecasting currencies: are they useful to the portfolio manager?," The European Journal of Finance, Taylor & Francis Journals, vol. 7(4), pages 335-355.
    7. Ahmed, Walid M.A., 2020. "Stock market reactions to domestic sentiment: Panel CS-ARDL evidence," Research in International Business and Finance, Elsevier, vol. 54(C).
    8. Mohammad Alomari & David. M. Power & Nongnuch Tantisantiwong, 2018. "Determinants of equity return correlations: a case study of the Amman Stock Exchange," Review of Quantitative Finance and Accounting, Springer, vol. 50(1), pages 33-66, January.
    9. David M. Ritzwoller & Joseph P. Romano, 2019. "Uncertainty in the Hot Hand Fallacy: Detecting Streaky Alternatives to Random Bernoulli Sequences," Papers 1908.01406, arXiv.org, revised Apr 2021.
    10. Shazia Ghani, 2011. "A re-visit to Minsky after 2007 financial meltdown," Post-Print halshs-01027435, HAL.
    11. Christiane Goodfellow & Dirk Schiereck & Steffen Wippler, 2013. "Are behavioural finance equity funds a superior investment? A note on fund performance and market efficiency," Journal of Asset Management, Palgrave Macmillan, vol. 14(2), pages 111-119, April.
    12. Cagli, Efe Caglar & Taskin, Dilvin & Evrim Mandaci, Pınar, 2019. "The short- and long-run efficiency of energy, precious metals, and base metals markets: Evidence from the exponential smooth transition autoregressive models," Energy Economics, Elsevier, vol. 84(C).
    13. Andrew Weinbach & Rodney J. Paul, 2009. "National television coverage and the behavioural bias of bettors: the American college football totals market," International Gambling Studies, Taylor & Francis Journals, vol. 9(1), pages 55-66, April.
    14. Tian, Maoxi & El Khoury, Rim & Alshater, Muneer M., 2023. "The nonlinear and negative tail dependence and risk spillovers between foreign exchange and stock markets in emerging economies," Journal of International Financial Markets, Institutions and Money, Elsevier, vol. 82(C).
    15. Frans P. Vries & Nick Hanley, 2016. "Incentive-Based Policy Design for Pollution Control and Biodiversity Conservation: A Review," Environmental & Resource Economics, Springer;European Association of Environmental and Resource Economists, vol. 63(4), pages 687-702, April.
    16. Oxelheim, Lars & Rafferty, Michael, 2005. "On the static efficiency of secondary bond markets," Journal of Multinational Financial Management, Elsevier, vol. 15(2), pages 117-135, April.
    17. Shi, Huai-Long & Zhou, Wei-Xing, 2022. "Factor volatility spillover and its implications on factor premia," Journal of International Financial Markets, Institutions and Money, Elsevier, vol. 80(C).
    18. Nuruddeen Usman & Kodili Nwanneka & Nduka, 2023. "Announcement Effect of COVID-19 on Cryptocurrencies," Asian Economics Letters, Asia-Pacific Applied Economics Association, vol. 3(3), pages 1-4.
    19. George G. Kaufman, 1980. "Duration, Planning Period, And Tests Of The Capital Asset Pricing Model," Journal of Financial Research, Southern Finance Association;Southwestern Finance Association, vol. 3(1), pages 1-9, March.
    20. Paul, Saumik, 2019. "A Decline in Labor's Share with Capital Accumulation and Complementary Factor Inputs: An Application of the Morishima Elasticity of Substitution," IZA Discussion Papers 12219, Institute of Labor Economics (IZA).

    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

    Statistics

    Access and download statistics

    Corrections

    All material on this site has been provided by the respective publishers and authors. You can help correct errors and omissions. When requesting a correction, please mention this item's handle: RePEc:ovi:oviste:v:xvii:y:2017:i:2:p:583-587. See general information about how to correct material in RePEc.

    If you have authored this item and are not yet registered with RePEc, we encourage you to do it here. This allows to link your profile to this item. It also allows you to accept potential citations to this item that we are uncertain about.

    If CitEc recognized a bibliographic reference but did not link an item in RePEc to it, you can help with this form .

    If you know of missing items citing this one, you can help us creating those links by adding the relevant references in the same way as above, for each refering item. If you are a registered author of this item, you may also want to check the "citations" tab in your RePEc Author Service profile, as there may be some citations waiting for confirmation.

    For technical questions regarding this item, or to correct its authors, title, abstract, bibliographic or download information, contact: Gheorghiu Gabriela (email available below). General contact details of provider: https://edirc.repec.org/data/feoviro.html .

    Please note that corrections may take a couple of weeks to filter through the various RePEc services.

    IDEAS is a RePEc service. RePEc uses bibliographic data supplied by the respective publishers.