Risk & Return of Islamic Stock Market Indexes

The Dow Jones Islamic market index- US (DJIMI) tracks the stocks of corporations compatible with Islamic law. A parallel and unrestricted counterpart of DJIMI is the Wilshire 5000 Index (W5000) which tracks the price performance of the largest 5000 US companies. Of that index, approximately 75 % of the companies fail to meet the Islamic criteria, leaving only approximately 700 companies as potential candidates for inclusion in the DJIMI. Using cointegration techniques we place the DJIMI under analytical scrutiny and ask (1) how has this selection restriction affected the performance of Islamic investments represented by the DJIM index? (2) is the DJIM index less diversified than the DJW index? (3) if so, to what extent has the limited diversification affected its risk and return? (4) and finally, what dynamic correlation and long-term relationship exist between the two indexes over time