INVESTIGATING VOLATILITY BEHAVIOUR: EMPIRICAL EVIDENCE FROM ISLAMIC STOCK INDICES

  • Burhanuddin Burhanuddin Universitas Mulawarman
Keywords: Volatility, Forecasting, Islamic Stock Indices

Abstract

The main purpose of this research is to apply five univariate GARCH models to thedaily stock returns of four major sharia stock indices. Two symmetric versions of theGARCH model (GARCH and MGARCH) and three asymmetric versions (EGARCH,TGARCH and PGARCH) are employed to estimate and forecast the volatility of fourmajor sharia indices. The results provide strong evidence that all models can depictthe volatility behaviours in all four sharia index returns. The two symmetric modelsindicate that the volatility of a sharia index’s returns depend on its previous own lags,and statistically prove that a rise in volatility (risk) leads to an increase in mean(return), i.e. the risk premium effect. Meanwhile, the three asymmetric modelssuggest that negative shocks to daily returns tend to have higher impact on thevolatility of sharia indices than positive shocks of the same magnitude. Moreover,based on the values of forecasting errors – root mean square errors (RMSE) andmean absolute errors (MAE) – the asymmetric GARCH models outperform thesymmetric models in forecasting the volatility of four major sharia indices. However,the very small difference values of RMSE and MAE among the univariate GARCH-type models denote that no single model is superior to the others.

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Published
2020-09-25
How to Cite
Burhanuddin, B. (2020). INVESTIGATING VOLATILITY BEHAVIOUR: EMPIRICAL EVIDENCE FROM ISLAMIC STOCK INDICES. Journal of Islamic Monetary Economics and Finance, 6(4). https://doi.org/10.21098/jimf.v6i4.1256
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Articles