Purpose – The purpose of this paper is to study whether Islamic investors lose portfolio efficiency due to a limited asset universe. Design/methodology/approach – The paper contributes to prior literature by using non‐parametrical measurements of efficiency instead of regular...

Purpose – The purpose of this paper is to study whether Islamic investors lose portfolio efficiency due to a limited asset universe. Design/methodology/approach – The paper contributes to prior literature by using non-parametrical measurements of efficiency instead of regular (parametrical)...

Purpose – The purpose of this paper is to analyse the extent of the contribution of the current Islamic financial system to society in terms of social responsibility (SR) required by the concept of social maslahah. Design/methodology/approach – The paper adopts a critical analytic approach...

Purpose – In light of the current debate on bank capital requirements, the purpose of this paper is to investigate the relative impact of capitalization on risk‐taking efficiency in Islamic and conventional banks. The author tests whether changes occurring to the capital structure of such...

Purpose – The purpose of this paper is to analyze the income structure of Islamic banks in the Gulf Cooperation Council (GCC) countries and to explore the effect of the diversification of banks' earning on risks that may harm these latter. Design/methodology/approach – Using data from...