We analyze the interaction among market competition, capital regulation, fixed regulatory compliance costs, and the portfolio and monitoring decisions of banks. We examine how the interplay among the effects of changes in the degree of competition and capital requirements regulation influence optimal bank choices and market outcomes. Furthermore, we evaluate how ratcheting up the Basel regulatory regime is likely to influence both the competitive structure of banking markets and the overall quality of bank loans. Higher capital requirements and increased fixed costs reduce the degree of competition in banking markets. The weight of these changes can fall more heavily on banks that choose to expend resources to monitor their loans to address loan losses

The implementation of tighter regulation and more powerful supervision may impose large social costs due to the strong reliance on supervisory information that requires direct assessment by a supervisor (i.e. Mandatory Supervision). We show that by introducing a Flexible Supervision contract, which is designed to be chosen by those banks that have incentives to capture the supervisor and allows them to bypass Mandatory Supervision, the most efficient regulation under asymmetric information may be implemented. Benevolent regulators should introduce Flexible Supervision regimes for the less risky, more capitalized and transparent banks in addition to the traditional Mandatory Supervision regime

This article reviews empirical studies on Islamic banking and concentrates on their main findings while highlighting future research directions. The earlier literature on Islamic banking built a foundation using normative judgment, descriptive analysis, theoretical development, and appraisal of country experiences. The paper discusses scholars’ concerns that have led to a paradigm shift in the system and highlight practitioners’ disquiet about recent practices. Subsequent research focuses on empirical investigations without extensive analytical and theoretical exploration in the area. Recent studies focus on the financial crisis, solvency, maqasid, disclosure and financial inclusion, and regulations. Even with the spillover effect on the Islamic banks after the crisis, a few pieces of evidence show that the system performs below its conventional counterpart. The paper discusses issues that are relevant to Islamic banking and identifies other avenues for future research

We find that multi-bank holding companies (MBHCs) in the U.S. have lower insolvency risk than single-bank holding companies (SBHCs) at the parent level, but have significantly higher insolvency risk than the latter at the subsidiary level. Our results suggest that MBHC parents tend to benefit from the internal capital market while allowing for more risk-taking at the individual levels. We further find that the higher risk for MBHC affiliates is because of the organizational and geographic complexity at the MBHC parent level. Our results highlight the importance of government regulation on banks at both parent and subsidiary levels

This paper studies the effect of information disclosure on banks’ portfolio risk. We cast a simple banking system into a general equilibrium model with trading frictions. We find that the information disclosure lowers the expected risk-adjusted profits for a non-negligible fraction of banks. The magnitude of this effect depends on the structure of the banking system and, alarmingly, it is more pronounced for systemically important institutions. We connect these theoretical findings to the stress test procedure, where bank information is disclosed by the regulator. The 2011 and 2014 stress tests are used in an empirical study to further support our theoretical results

Research on interbank networks and systemic importance is starting to recognise that the web of exposures linking banks’ balance sheets is more complex than the single-layer-of-exposure approach suggests. We use data on exposures between large European banks, broken down by both maturity and instrument type, to characterise the main features of the multiplex (or multi-layered) structure of the network of large European banks. Banks that are well connected or important in one network, tend to also be well connected in other networks (i.e. the network features positively correlated multiplexity). The different layers exhibit a high degree of similarity, stemming both from standard similarity analyses as well as a core-periphery analyses at the layer level. We propose measures of systemic importance that fit the case in which banks are connected through an arbitrary number of layers (be it by instrument, maturity or a combination of both). Such measures allow for a decomposition of the global systemic importance index for any bank into the contributions of each of the sub-networks, providing a potentially useful tool for banking regulators and supervisors in identifying tailored policy responses. We use the dataset of exposures between large European banks to illustrate that both the methodology and the specific level of network aggregation may matter both in the determination of interconnectedness and in the policy making process

Financial networks have shown to be important in understanding systemic events in credit markets. In this paper, we investigate how the structure of those networks can affect the capacity of regulators to assess the level of systemic risk. We introduce a model to compute the individual and systemic probability of default in a system of banks connected in a generic network of credit contracts and exposed to external shocks with a generic correlation structure. Even in the presence of complete knowledge, we identify conditions on the network for the emergence of multiple equilibria. Multiple equilibria give rise to uncertainty in the determination of the default probability. We show how this uncertainty can affect the estimation of systemic risk in terms of expected losses. We further quantify the effects of cyclicality, leverage, volatility and correlations. Our results are relevant to the current policy discussions on new regulatory framework to deal with systemic events of distress as well as on the desirable level of regulatory data disclosure