Mlambo, Chipo and Biekpe, Nicholas (2007): The efficient market hypothesis: Evidence from ten African stock markets. Published in: Investment Analysts Journal No. 66 (2007): pp. 5-18.
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The paper investigates the weak-form efficiency of ten African stock markets using the runs test methodology for serial dependency. Returns are calculated using the adjusted trade-to-trade approach. Serious thin-trading was observed on all markets, and more so for Namibia and Botswana, the two markets with significant dual-listed stocks on the JSE. In many of the markets studied, a significant number of stocks rejected the random walk. Only three markets, Namibia, Kenya and Zimbabwe, were found to be relatively weak form efficient. The result for Namibia is attributed to its correlation with the JSE. Kenya and Zimbabwe are much older than most of the other markets studied. All the stocks in the Mauritian sample rejected the random walk at the 1% level of significance using the runs test and is thus said to be weak form inefficient. The same conclusion is reached for Ghana, the BRVM, Egypt and Botswana. Thus the possibility of profiting by trading on historical prices could not be entirely ruled out.
|Item Type:||MPRA Paper|
|Original Title:||The efficient market hypothesis: Evidence from ten African stock markets|
|English Title:||The efficient market hypothesis: Evidence from ten African stock markets|
|Keywords:||Market efficiency, African stock markets, random walk, thin trading|
|Subjects:||G - Financial Economics > G1 - General Financial Markets > G14 - Information and Market Efficiency; Event Studies
N - Economic History > N2 - Financial Markets and Institutions > N27 - Africa; Oceania
O - Economic Development, Technological Change, and Growth > O1 - Economic Development > O16 - Financial Markets; Saving and Capital Investment; Corporate Finance and Governance
|Depositing User:||C Mlambo|
|Date Deposited:||21. Oct 2010 03:08|
|Last Modified:||12. Feb 2013 06:03|
Appiah-Kusi J and Menyah K. 2003. Return predictability in African stock markets. Review of Financial Economics, 12: 247-270
Asal M. 2000. Are there trends towards efficiency? A case study of emerging markets: the Egyptian experience. Paper presented at the Financial Stabilization and Economic Growth conference, 26-27 October 2000, Svishtov, Bulgaria.
Barnes P. 1986. Thin trading and stock market efficiency: The case pf the Kuala Lumpur Stock Exchange. Journal of Business Finance & Accounting, 13: 609-617.
Bekaert G and Harvey CR. 2002. Research in emerging market finance: Looking to the future. Emerging Markets Review, 3: 429-448.
Bowie DC. 1994. Thin trading, non-normality and the estimation of systematic risk on small stock markets. Unpublished Ph.D. Thesis, University of Cape Town, South Africa.
Bundoo SK. 2000. The Mauritius Stock Exchange: An assessment. Social Sciences & Humanities and Law & Management Research Journal, 3: 67-80.
Chiwira O. 2001. An empirical study of the efficient market hypothesis on the Zimbabwe Stock Exchange 1995 – 1999. Unpublished MSc. Thesis, University of Zimbabwe.
Collins D and Biekpe N. 2001. African financial markets: Interdependence with and contagion from global emerging markets. Working Paper, Cape Town, South Africa.
Dickinson JP and Muragu K. 1994. Market efficiency in developing countries: A case study of the Nairobi Stock Exchange. Journal of Business and Accounting, 21: 133-150.
Erb CB, Harvey CR and Viskanta TE. 1996. The risk and Expected Returns of African Equity Investment. In P. Collier & C. Pattilo (Eds.), Investment and Risk in Africa, 122-145: Macmillan.
Fama E. 1965. The behaviour of stock market prices. Journal of Business, 38: 34-105.
Fama E. 1970. Efficient capital markets: A review of theory and empirical work. Journal of Finance, 25(2): 383-417.
Groenewold N and Ariff M. 1998. The effects of deregulation on share-market efficiency in the Asia-Pacific. International Economic Journal, 12: 23-47.
Kenny CJ and Moss TJ. 1998. Stock markets in Africa: Emerging lions or white elephants? World Development, 26 (5), 829-843.
Kiweu JM. 1991. The behaviour of share prices in the Nairobi Stock Exchange: An empirical investigation. Unpublished MBA Thesis, University of Nairobi, Kenya.
Magnusson MA and Wydick B. 2002. How efficient are Africa’s emerging stock markets? Journal of Development Studies, 38: 141-156.
Miller MH, Muthuswany J and Whaley RE. 1994. Mean reversion of Standard & Poor’s 500 Index basis changes: Arbitrage-induced or statistical illusion? Journal of Finance, 49: 479-513.
Mlambo C and Biekpe N. 2001. Investment Basics XLIV. Review of African stock markets. Investment Analysts Journal, 54: 61-65.
Mlambo C, Biekpe N and Smit EvdM. 2003. Testing the random walk hypothesis on thinly-traded markets: The case of four African stock markets. African Finance Journal, 5: 16-35.
Mlambo C and Biekpe N. 2005. Thin-trading on African stock markets: Implications on market efficiency testing. The Investment Analyst Journal 61, pp 29-40.
Mobarek A and Keasey K. 2000. Weak-form market efficiency of an emerging market: Evidence from Dhaka Stock Market of Bangladesh. A paper presented at the ENBS Conference held in Oslo, May 2000.
Moss T. 2004. Irrational exuberance of financial foresight? The political logic of stock markets in Africa. Forthcoming in African Emerging Markets: Contemporary Issues, Volume II, S. Mensah & T. Moss (eds.), African Capital Markets Forum, Accra, 2004
Senbet LW. 2000. Discussion on 'The Risk and Expected Returns of African Equity Investment' By Erb, Harvey and Viskanta. In P. Collier & C. Pattilo (Eds.), Investment and Risk in Africa. 146-150: Macmillan.
Smith G and Jefferis K. 2002. The evolving efficiency of African stock markets. Unpublished research paper. School of Oriental and African Studies, University of London.
Smith G, Jefferis K and Ryoo H-J. 2002. African stock markets: Multiple variance ratio tests of random walks. Applied Financial Economics Journal, 12: 475-484
Turner M. 1999. One man’s dream to unite Africa. Financial Times, London, November 29, 1999: 29
Tyandela L and Biekpe N. 2001. Construction of all SADC stock markets indices. African Finance Journal, 3: 59-76.