Financial Connectedness and Contagion Risk in a Dual Banking System

The 2008 subprime mortgage crisis laid bare the vulnerabilities inherent in financial interdependencies, where shocks originating from one sector and entity rapidly disseminated through complex networks, engendering a contagion effect that reverberated across the banking system. The present paper offers a comprehensive exploration of systemic risk, financial interconnectedness, and contagion within the context of a dual banking system. This appears to be a particular problem because of the heterogeneous market structure, which raises major questions about financial stability. Recognizing the profound implications of the interplay between Islamic and conventional banks, this study employs a comprehensive framework to dissect the intricate dynamics at play. The results reveal the existence of significant interconnectivity, which experiences a notable augmentation during periods of turmoil. Additionally, we provide an analysis of the topological structure of the interlinkage between Islamic and conventional banks, indicating substantial transmission of volatility, both unidirectionally and bidirectionally, across intersectoral and intrasectoral domains. However, our findings indicate that both incoming and outgoing connectivities are primarily influenced by the conventional banking sector.