IDEAS home Printed from
   My bibliography  Save this article

The Changing Efficiency Of African Stock Markets




This paper classifies formal African stock markets into four categories and discuses the principal characteristics of the seven markets covered in this study: South Africa, Egypt, Morocco, Nigeria, Zimbabwe, Mauritius and Kenya. Using a GARCH approach with time-varying parameters, a test of evolving efficiency (TEE) is implemented for periods starting in the early 1990s and ending in June 2001. This test detects changes in weak form efficiency through time. The TEE finds that the Johannesburg stock market is weak form efficient throughout the period, and three stock markets become weak form efficient towards the end of the period: Egypt and Morocco from 1999 and Nigeria from early 2001. These contrast with the Kenya and Zimbabwe stock markets which show no tendency towards weak form efficiency and the Mauritius market which displays a slow tendency to eliminate inefficiency. The paper relates weak form efficiency to stock market turnover, capitalisation and institutional characteristics of markets. Copyright 2005 Economic Society of South Africa.

Suggested Citation

  • Keith Jefferis & Graham Smith, 2005. "The Changing Efficiency Of African Stock Markets," South African Journal of Economics, Economic Society of South Africa, vol. 73(1), pages 54-67, March.
  • Handle: RePEc:bla:sajeco:v:73:y:2005:i:1:p:54-67

    Download full text from publisher

    File URL:
    File Function: link to full text
    Download Restriction: Access to full text is restricted to subscribers.

    As the access to this document is restricted, you may want to search for a different version of it.

    References listed on IDEAS

    1. Dollar, David & Easterly, William, 1999. "The Search for the Key: Aid, Investment and Policies in Africa," Journal of African Economies, Centre for the Study of African Economies (CSAE), vol. 8(4), pages 546-577, December.
    2. Dani Rodrik, 1998. "Trade Policy and Economic Performance in Sub-Saharan Africa," NBER Working Papers 6562, National Bureau of Economic Research, Inc.
    3. repec:fth:oxesaf:97-5 is not listed on IDEAS
    4. Christopher S. Adam & Stephen O'Connell, 1997. "Aid, taxation and development: analytical perspectives on aid effectiveness in sub-Saharan Africa," CSAE Working Paper Series 1997-05, Centre for the Study of African Economies, University of Oxford.
    Full references (including those not matched with items on IDEAS)

    More about this item


    Access and download statistics


    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:bla:sajeco:v:73:y:2005:i:1:p:54-67. See general information about how to correct material in RePEc.

    For technical questions regarding this item, or to correct its authors, title, abstract, bibliographic or download information, contact: (Wiley-Blackwell Digital Licensing) or (Christopher F. Baum). General contact details of provider: .

    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.

    We have no references for this item. You can help adding them by using 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.

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

    IDEAS is a RePEc service hosted by the Research Division of the Federal Reserve Bank of St. Louis . RePEc uses bibliographic data supplied by the respective publishers.