International diversification among Islamic investments: is there any benefit

Purpose - The purpose of this paper is to assess the benefits to investors of international diversification among only Islamic funds. Compared to conventional investors who are not restricted in their choice of funds, Islamic investors are restricted to investing in shari'a-compliant funds, thus giving up some diversification benefits. The possibility of international diversification among only Islamic funds may thus help Islamic investors to invest in accordance to their religious beliefs and still benefit from diversification. Design/methodology/approach - The paper assesses the benefits of diversification by analyzing the extent of co-integration among four regional Islamic funds and by estimating the short-term and long-term structural dynamics of and among these funds. The paper uses an Autoregressive-Distributed Lag (ARDL) approach to testing the long-run relationships among these funds and use variance decomposition and impulse response functions to examine the structural dynamics of the relationship between these funds. These methods can also be used for predictive purposes and represent, in authors opinion, a useful approach that complements the traditional methodology of static covariance matrix to find the efficient frontier at a given moment in time. Findings - The results indicate that international diversification can help reduce risk if Asia Pacific Islamic funds and MENA region Islamic funds are invested contemporaneously and/or Asia Pacific Islamic funds and North America Islamic funds, and/or Europe funds and MENA funds. The paper also finds that investors would benefit from investing in North American funds and MENA funds both in the long run and in the short run. Conversely, the paper finds that Europe funds and North American funds are co-integrated in the long-run precluding the opportunity for substantial diversification benefits from these particular portfolio mixes. Research limitations/implications - The long-run analysis helps passive fund managers and investors in composing their portfolio by providing evidence that some portfolio mixes of different regional Islamic funds lead to better risk return performance than one regional Islamic fund portfolios. The short-run analysis however helps the active fund managers and investors as it suggests that diversifying in the short run and reviewing their portfolio on a regular basis would be beneficial as well. Originality/value - This analysis justifies the promotion of Islamic finance as the negative correlation between several Islamic funds across the regions studied suggests better opportunities of investments via international diversification making Islamic funds more desirable.