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The consequences of online information dissemination on stock market liquidity and efficiency: Implications on African markets


  • Mlambo, Chipo
  • Biekpe, Nicholas


From the Efficient Market Hypothesis, a market is efficient if security prices fully and correctly reflect all available information that is relevant for the stock’s pricing. This requires a medium of information dissemination and transaction ordering with both speed and accuracy. This paper chronologically presents arguments in favour of the internet as one such medium. The internet has also enabled the transmission and archiving of bulky information in a ready-to-use format. And abnormal returns are now quickly observed and arbitraged away to non-existence. Using correlation analysis, we find a positive relationship between the internet and some stock market development indicators.

Suggested Citation

  • Mlambo, Chipo & Biekpe, Nicholas, 2003. "The consequences of online information dissemination on stock market liquidity and efficiency: Implications on African markets," MPRA Paper 24971, University Library of Munich, Germany, revised Nov 2003.
  • Handle: RePEc:pra:mprapa:24971

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    References listed on IDEAS

    1. P. C. Kumar & George Tsetsekos, 1999. "The differentiation of 'emerging' equity markets," Applied Financial Economics, Taylor & Francis Journals, vol. 9(5), pages 443-453.
    2. Palani-Rajan Kadapakkam, 2000. "Reduction of Constraints on Arbitrage Trading and Market Efficiency: An Examination of Ex-Day Returns in Hong Kong after Introduction of Electronic Settlement," Journal of Finance, American Finance Association, vol. 55(6), pages 2841-2861, December.
    3. 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.
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    Cited by:

    1. Quinton Morris & Gary Van vuuren & Paul Styger, 2009. "Further Evidence Of Long Memory In The South African Stock Market," South African Journal of Economics, Economic Society of South Africa, vol. 77(1), pages 81-101, March.
    2. Enisan, Akinlo A. & Olufisayo, Akinlo O., 2009. "Stock market development and economic growth: Evidence from seven sub-Sahara African countries," Journal of Economics and Business, Elsevier, vol. 61(2), pages 162-171.

    More about this item


    Efficient market hypothesis; internet; online information; stock market; development indicators; Africa;

    JEL classification:

    • G14 - Financial Economics - - General Financial Markets - - - Information and Market Efficiency; Event Studies; Insider Trading
    • O16 - Economic Development, Innovation, Technological Change, and Growth - - Economic Development - - - Financial Markets; Saving and Capital Investment; Corporate Finance and Governance
    • O33 - Economic Development, Innovation, Technological Change, and Growth - - Innovation; Research and Development; Technological Change; Intellectual Property Rights - - - Technological Change: Choices and Consequences; Diffusion Processes


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