ABSTRACT
Purpose: This study aims to investigate the dependence structure and volatility spillovers among two strategic commodities (crude oil and gold) and a set of Islamic and conventional regional stock market indices, while examining the Ramadan effect Design/methodology/approach: The empirical strategy consists of two complementary measures of dependence and connectedness. This study first uses copulas to examine the dependency between the markets considered, then spillovers compute the magnitude of the connectedness among them. Findings: The copulas analysis shows that Frank's copula appears to better capture the relationship between most asset returns and highlights the almost absence of extreme dependence and, therefore, the existence of diversification opportunities. Moreover, the connectedness analysis suggests that gold is a net volatility receiver and provides, thereby, greater diversification benefits compared to crude oil. In addition, the high levels of time-varying connectedness support strong integration among the financial markets studied, specifically during the COVID-19 crisis period. Furthermore, the connectedness among the markets studied increases during the Ramdan subperiods, supporting shift contagion among financial markets considered during this religious holiday. Practical implications: The results provide investors with a better understanding of the nature as well as the magnitude of the interdependences between commodity markets and a set of Islamic and conventional regional stock markets. Indeed, it is of paramount importance for investors to clearly understand how Islamic and conventional markets are segmented or integrated during stress and stress-free periods, as well as the effect of the month of Ramadan on the interdependence among markets, to better assess risks, diversify portfolios and implement more effective hedging strategies. Originality/value: While a considerable body of literature examines financial contagion and volatility transmission between financial markets, there is still much to be said regarding connectedness among commodity and stock markets, particularly when it comes to studying the effects of religious holidays on the interaction between conventional and Islamic assets. This paper fills in this gap by focusing on the dependence structure as well as the connectedness between Islamic stock indices, conventional stock indices, gold and crude oil for six different regions, while examining the Ramadan effect. © 2023, Emerald Publishing Limited.
ABSTRACT
Purpose: This study examines herding in Islamic bank equity markets under various market conditions (up/down, high/low trading and high/low volatility) and during events such as Organization of the Petroleum Exporting Countries (OPEC) meeting days, Ramadan, the Gulf Cooperation Council (GCC) crisis of 2017 and the COVID-19 pandemic. The authors also look at the impact of rising and falling oil prices on herding behaviour. Design/methodology/approach: This study uses the model of Chang et al. (2000) to estimate herding behaviour in the Islamic bank markets. Findings: First, the authors estimate herding at the GCC region level, and the results reveal an absence of herding under all market conditions and during all the events considered, except for the GCC crisis of 2017. Second, the authors investigate herding in four Gulf countries (Saudi Arabia, United Arab Emirates [UAE], Qatar and Kuwait) separately and find that herding is evident in all these countries during various market conditions. During Ramadan, herding appears in the Saudi Arabia and Kuwait Islamic bank equity markets. Herding is not prevalent during OPEC meeting days in any of the markets, whereas herding is evident in Saudi Arabia, UAE and Kuwait Islamic bank equity markets during the GCC crisis of 2017 and the COVID-19 pandemic. Lastly, the rising and falling oil prices do not influence herding at either GCC region or country level. Practical implications: From the practitioner's perspective, this study provides useful insights for investors in Islamic banks and policymakers, in terms of asset pricing, portfolio diversification, trading strategies and market stability. Originality/value: Many studies explore herding in the equity markets of Muslim majority countries, but not specifically in the Islamic bank market. This study fills this literature gap by comprehensively examining herding in Islamic bank equity markets under various market conditions (up/down, high/low trading and high/low volatility) and during events, such as OPEC meeting days, Ramadan, the GCC crisis of 2017 and the COVID-19 pandemic. © 2022, Emerald Publishing Limited.