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The Day of the Week effect on stock market returns and volatility: Evidence from Nigeria and South Africa

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  • Ndako, Umar Bida

Abstract

This paper examines the day of the week effect for the Nigerian and South African equity markets over pre-liberalisation and post-liberalisation periods. The paper uses Exponential Generalized Autoregressive Conditional Hetroskedasticity (EGARCH) model to estimate the day of the week effect both in the mean and variance equations. The post-liberalisation period for the Nigerian equity market exhibits day of the week effect on Fridays only in the mean equation. While in the variance equation, there is evidence of day of the week effect on Tuesdays and Thursdays respectively. In South Africa, there is significant evidence of the day of the week effect on Mondays and Fridays during the pre-liberalization period. During the post-liberalisation period, there is evidence of day of the week effect on Thursdays in the mean equation and Fridays only in the variance equation.

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Paper provided by University Library of Munich, Germany in its series MPRA Paper with number 48076.

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Date of creation: 05 Jul 2013
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Handle: RePEc:pra:mprapa:48076

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Keywords: day of the week effect; volatility; E-GARCH model;

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  1. Jinghan Cai & Yuming Li & Yuehua Qi, 2006. "The Day-of-the-Week Effect: New Evidence from the Chinese Stock Market," Chinese Economy, M.E. Sharpe, Inc., vol. 39(2), pages 71-88, April.
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  7. Kiymaz, Halil & Berument, Hakan, 2003. "The day of the week effect on stock market volatility and volume: International evidence," Review of Financial Economics, Elsevier, vol. 12(4), pages 363-380.
  8. Chris Brooks & Gita Persand, 2001. "Seasonality in Southeast Asian stock markets: some new evidence on day-of-the-week effects," Applied Economics Letters, Taylor & Francis Journals, vol. 8(3), pages 155-158.
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  10. Yeliz Yalcin & Eray M. Yycel, 2006. "The Day-of-the-Week Effect on Stock-Market Volatility and Return: Evidence from Emerging Markets (in English)," Czech Journal of Economics and Finance (Finance a uver), Charles University Prague, Faculty of Social Sciences, vol. 56(5-6), pages 258-277, May.
  11. Nelson, Daniel B, 1991. "Conditional Heteroskedasticity in Asset Returns: A New Approach," Econometrica, Econometric Society, vol. 59(2), pages 347-70, March.
  12. Keim, Donald B & Stambaugh, Robert F, 1984. " A Further Investigation of the Weekend Effect in Stock Returns," Journal of Finance, American Finance Association, vol. 39(3), pages 819-35, July.
  13. Umar Bida Ndako, 2010. "Stock Markets, Banks and Economic Growth: Time Series Evidence from South Africa," The African Finance Journal, Africagrowth Institute, vol. 12(2), pages 72-92.
  14. Hsieh, David A., 1988. "The statistical properties of daily foreign exchange rates: 1974-1983," Journal of International Economics, Elsevier, vol. 24(1-2), pages 129-145, February.
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