Reform of capital adequacy regulation in the world Islamic banking market

In 2023, one of the main standards for regulating Islamic banks in the world celebrated its 10th anniversary. It is difficult to find works in the academic literature discussing the reaction from the said regulation. We fill this gap and answer the research question of how the market responded to the introduction of the standard in the world. Having essentially the data of a quasi-experiment, we divide the sample into conventional (control group) and Islamic (pilot group) banks and estimate the effect of the intervention using the difference-in-differences method. Islamic banks have been known in the world practice as banks with a larger capital reserve than conventional ones. Interestingly, despite this fact, according to the results of the study, investors reacted positively to the additional capital correction.