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This paper evaluates the stock performance of Islamic banks relative to their conventional counterparts during the initial phase of the COVID-19 crisis (from December 31, 2019, to March 31, 2020). Using 426 banks from 48 countries, we find that stock returns of Islamic banks were about 10–13% higher than those of conventional banks after controlling for a host of the bank- and country-level variables. This study explains the Islamic banks’ superior crisis stock performance by exploring the potential role of pre-crisis bank efficiency. In a univariate analysis, we document higher non-parametric Data Envelopment Analysis (DEA) efficiency levels for Islamic banks than conventional banks in the year preceding the COVID-19 crisis. Our multivariate regressions show that the risk-adjusted DEA efficiency scores can explain crisis stock returns for Islamic banks but not conventional banks. The evidence is robust to alternative measures of stock returns, efficiency models, and other empirical strategies. Finally, we present insight on the importance of key bank characteristics in determining the stock returns of conventional banks during the crisis period.

The study examines empirically whether, and to what extent, equity markets in the Gulf Cooperation Council (GCC) are integrated inter-regionally. According to the official Charter of the GCC, building stronger ties among financial and capital markets of member states is a chief objective of the GCC. The results for the equity markets of Saudi Arabia, Kuwait, Bahrain and Oman suggest that these markets share a common stochastic trend that binds them together over the long-run. The results from alternative tests also indicate that measures taken since 1997 to liberalize the capital markets in the Gulf region are at least partly responsible for linking the Gulf markets. At least two implications emerge from these results. First, portfolio diversifications in the context of the Gulf region should bring little or no benefits to investors with long-term horizons, although short-term gains remain a possibility. Second, further steps to liberalize capital markets in the region appear an appropriate strategy for achieving a more integrated capital markets in the Gulf.

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