This paper investigates whether Islamic and conventional banks' stability is differently impacted by competition in dual markets where the two bank types operate alongside each other. Using a sample of 123 Islamic and 647 conventional banks from 29 countries for a period between 2010 and 2018, we find robust evidence that competition erodes the stability of conventional banks only. The stability of Islamic banks is not impacted specifically where religion is more prevalent. Focusing more deeply on religiosity and the institutional environment, such as the ease of doing business and economic freedom, we also find that such factors matter in differently shaping the competition-fragility nexus for the two types of banks.

本文研究伊斯兰银行和传统银行的稳定性是否受到双重市场竞争的不同影响，双重市场中两种类型的银行彼此并存。使用2010年至2018年期间来自29个国家的123家伊斯兰银行和647家传统银行的样本，我们发现有力的证据表明，竞争只会侵蚀传统银行的稳定性。在宗教较普遍的地方，伊斯兰银行的稳定性不会受到特别影响。我们更深入地关注宗教信仰和制度环境，例如经商的便利程度和经济自由度，我们还发现，这些因素在不同地影响两种类型的银行的竞争脆弱性联系时起着重要作用。