Islamic banks’ better performance in dealing with the recent global crisis has paid much attention to the way that banks’ mechanism works. The present study examines the following hypotheses by employing the PR-H statistics, Lerner index and Multivariate analysis. First, players of Islamic banking industry, by more market power, have better profitability and, in terms of market structure, have low competition. Second, Islamic banking market, by having a low competitive environment, is more concentrated and has a higher risk. Estimates show that Islamic banks have a higher degree of market power. Furthermore, multivariate analyses suggest that profitability increases significantly with increasing the market power. Islamic banking market shows less competition and more concentration. According to the results, Islamic banks allocate a greater share of their assets to finance and also have a more efficient allocation of capital.