The effects of Shariah board composition on Islamic equity indices' performance

Based on a sample of 54 Islamic indices over the period 2007–2014, we investigate the effect of Shariah board members' educational background on Islamic indices' risk and return characteristics via the screening criteria. Using a capital asset pricing model benchmark analysis, we assess the sensitivity of Islamic indices to their conventional peers in terms of beta and derive a measure of return (Jensen's alpha). First, we observe that the higher the number of members in common among the boards, the higher the risk–return profile of Islamic indices. Second, commonalities among board members lead to standardization of the screening criteria and to similar Islamic indices' performance. Third, we show that different betas across providers depend on the screening criteria, while the economic educational background of board members affects performance in terms of Jensen's alpha. Our study aims at contributing to the governance literature related to board composition and its importance as a possible driver of performance. In addition, given the impressive growth that Islamic finance has experienced during the last decade, this topic is of great interest to the asset management industry.