The efficiency of African equity markets
Purpose – In order to assess the informational efficiency of African equity markets (AEMs), the purpose of this paper is to examine long memory in both equity returns and volatility using auto-regressive fractionally integrated moving average (ARFIMA)-FIGARCH/hyperbolic GARCH (HYGARCH) models. Design/methodology/approach – In order to test for long memory, the behaviour of the auto-correlation function for 11 AEMs is examined. Following the graphical analysis, the authors proceed to estimate ARFIMA-FIGARCH and ARFIMA-HYGARCH models, specifically designed to capture long-memory dynamics. Findings – The results show that these markets (largely) display a predictable component in returns; while evidence of long memory in volatility is very mixed. In comparison, results from the control of the UK and USA show short memory in returns while evidence of long memory in volatility is mixed. These results show that the behaviour of equity market returns and risks are dissimilar across markets and this may have implications for portfolio diversification and risk management strategies. Practical implications – The results of the analysis may have important implications for portfolio diversification and risk management strategies. Originality/value – The importance of this paper lies in it being the first to systematically analyse long-memory dynamics for a range of AEMs. African markets are becoming increasingly important as a source of international portfolio diversification and risk management. Hence, the results here have implication for the conduct of international portfolio building, asset pricing and hedging.
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Volume (Year): 26 (2009)
Issue (Month): 4 (October)
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Please report citation or reference errors to , or , if you are the registered author of the cited work, log in to your RePEc Author Service profile, click on "citations" and make appropriate adjustments.:
- McKenzie, Michael D, 2001. "Non-periodic Australian Stock Market Cycles: Evidence from Rescaled Range Analysis," The Economic Record, The Economic Society of Australia, vol. 77(239), pages 393-406, December.
- Graham Smith & Keith Jefferis & Hyun-Jung Ryoo, 2002. "African stock markets: multiple variance ratio tests of random walks," Applied Financial Economics, Taylor & Francis Journals, vol. 12(7), pages 475-484.
- Jacqueline Irving, 2005. "Regional Integration of Stock Exchanges in Eastern and Southern Africa; Progress and Prospects," IMF Working Papers 05/122, International Monetary Fund.
- Andrew W. Lo, 1989.
"Long-term Memory in Stock Market Prices,"
NBER Working Papers
2984, National Bureau of Economic Research, Inc.
- Chou, Ray Yeutien, 1988. "Volatility Persistence and Stock Valuations: Some Empirical Evidence Using Garch," Journal of Applied Econometrics, John Wiley & Sons, Ltd., vol. 3(4), pages 279-94, October-D.
- Bollerslev, Tim & Chou, Ray Y. & Kroner, Kenneth F., 1992. "ARCH modeling in finance : A review of the theory and empirical evidence," Journal of Econometrics, Elsevier, vol. 52(1-2), pages 5-59.
- John T. Barkoulas & Christopher F. Baum & Nickolaos Travlos, 1996.
"Long Memory in the Greek Stock Market,"
Boston College Working Papers in Economics
356., Boston College Department of Economics.
- Davidson, James, 2004. "Moment and Memory Properties of Linear Conditional Heteroscedasticity Models, and a New Model," Journal of Business & Economic Statistics, American Statistical Association, vol. 22(1), pages 16-29, January.
- Bollerslev, Tim, 1986.
"Generalized autoregressive conditional heteroskedasticity,"
Journal of Econometrics,
Elsevier, vol. 31(3), pages 307-327, April.
- Tim Bollerslev, 1986. "Generalized autoregressive conditional heteroskedasticity," EERI Research Paper Series EERI RP 1986/01, Economics and Econometrics Research Institute (EERI), Brussels.
- Charles Komla Adjasi & Charles Amo Yartey, 2007. "Stock Market Development in Sub-Saharan Africa; Critical Issues and Challenges," IMF Working Papers 07/209, International Monetary Fund.
- Victor Chow, K. & Denning, Karen C. & Ferris, Stephen & Noronha, Gregory, 1995. "Long-term and short-term price memory in the stock market," Economics Letters, Elsevier, vol. 49(3), pages 287-293, September.
- Ding, Zhuanxin & Granger, Clive W. J. & Engle, Robert F., 1993. "A long memory property of stock market returns and a new model," Journal of Empirical Finance, Elsevier, vol. 1(1), pages 83-106, June.
- Baillie, Richard T., 1996. "Long memory processes and fractional integration in econometrics," Journal of Econometrics, Elsevier, vol. 73(1), pages 5-59, July.
- K.R. Jefferis & T.T. Matome, 2001. "International Stock Market Linkages," Research Papers RP_105, African Economic Research Consortium.
- Marcelo Resende & Nilson Teixeira, 2002. "Permanent structural changes in the Brazilian economy and long memory: a stock market perspective," Applied Economics Letters, Taylor & Francis Journals, vol. 9(6), pages 373-375.
- McMillan, David G. & Ruiz, Isabel, 2009. "Volatility persistence, long memory and time-varying unconditional mean: Evidence from 10 equity indices," The Quarterly Review of Economics and Finance, Elsevier, vol. 49(2), pages 578-595, May.
- Claessens, Stijn & Dasgupta, Susmita & Glen, Jack, 1995. "Return Behavior in Emerging Stock Markets," World Bank Economic Review, World Bank Group, vol. 9(1), pages 131-51, January.
- Cheung, Yin-Wong & Lai, Kon S., 1995. "A search for long memory in international stock market returns," Journal of International Money and Finance, Elsevier, vol. 14(4), pages 597-615, August.
- Hull, John C & White, Alan D, 1987. " The Pricing of Options on Assets with Stochastic Volatilities," Journal of Finance, American Finance Association, vol. 42(2), pages 281-300, June.
- Sadique, Shibley & Silvapulle, Param, 2001. "Long-Term Memory in Stock Market Returns: International Evidence," International Journal of Finance & Economics, John Wiley & Sons, Ltd., vol. 6(1), pages 59-67, January.
- Mohamed A. El-Erian & Manmohan S. Kumar, 1995. "Emerging Equity Markets in Middle Eastern Countries," IMF Staff Papers, Palgrave Macmillan, vol. 42(2), pages 313-343, June.
- Baillie, Richard T. & Bollerslev, Tim & Mikkelsen, Hans Ole, 1996.
"Fractionally integrated generalized autoregressive conditional heteroskedasticity,"
Journal of Econometrics,
Elsevier, vol. 74(1), pages 3-30, September.
- Tom Doan, . "RATS programs to replicate Baillie, Bollerslev, Mikkelson FIGARCH results," Statistical Software Components RTZ00009, Boston College Department of Economics.
- Errunza, Vihang, 2001. "Foreign Portfolio Equity Investments, Financial Liberalization, and Economic Development," Review of International Economics, Wiley Blackwell, vol. 9(4), pages 703-26, November.
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