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Calendar Anomalies in an Emerging African Market: Evidence from the Ghana Stock Exchange

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Author Info
Paul Alagidede () (Loughborough University)
Theodore Panagiotidis () (Loughborough University)

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Abstract

This paper investigates two calendar anomalies in an emerging African market. Both the day of the week and month of the year effects are examined for Ghana. The latter is an interesting case because i) it operates for only three days per week during the sample period and ii) the increased focus that African stock markets have received lately both from academics and practitioners. We employ rolling techniques to asses the affects of policy and institutional changes. This allows deviations from the linear paradigm. We finally employ non-linear models from the GARCH family in a rolling framework to investigate the role of asymmetries. Contrary to a January return pattern in most markets, an April effect is found for Ghana. The evidence also shows the presence of the day of the week effects with asymmetric volatility performing better than the benchmark linear estimates. This seasonality though disappears when only the latest information is used (time-varying asymmetric GARCH). Our approach provides a new framework for investigating this well-known puzzle in finance.

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File URL: http://www.lboro.ac.uk/departments/ec/RePEc/lbo/lbowps/Ghana12062006.pdf
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Publisher Info
Paper provided by Department of Economics, Loughborough University in its series Discussion Paper Series with number 2006_13.

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Date of creation: Jun 2006
Date of revision: Jun 2006
Handle: RePEc:lbo:lbowps:2006_13

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Related research
Keywords: Calendar Anomalies; Non-Linearity; Market Efficiency; Asymmetric Volatility; Rolling windows.;

Find related papers by JEL classification:
C22 - Mathematical and Quantitative Methods - - Single Equation Models; Single Variables - - - Time-Series Models; Dynamic Quantile Regressions
C52 - Mathematical and Quantitative Methods - - Econometric Modeling - - - Model Evaluation and Testing
G10 - Financial Economics - - General Financial Markets - - - General (includes Measurement and Data)

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References listed on IDEAS
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.:
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    Other versions:
  6. Jeffrey Jaffe & R. Westerfield, . "The Week-End Effect in Common Stock Returns: The International Evidence," Rodney L. White Center for Financial Research Working Papers 03-85, Wharton School Rodney L. White Center for Financial Research.
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    Other versions:
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  1. Frimpong, Joseph Magnus & Oteng-Abayie, Eric Fosu, 2006. "Modelling and Forecasting Volatility of Returns on the Ghana Stock Exchange Using GARCH Models," MPRA Paper 593, University Library of Munich, Germany, revised 07 Oct 2006. [Downloadable!]
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