We review heterogeneous agent-based models of financial stability and their application in stress tests. In contrast to the mainstream approach, which relies heavily on the rational expectations assumption and focuses on situations where it is possible to compute an equilibrium, this approach...

I develop an algorithm to approximate the loss rate distribution for fixed income portfolios with obligor concentrations. The approximation requires no advanced mathematics or statistics, only the summation of large exposures and the evaluation of binomial probabilities. The approximation is...

This paper illustrates channels by which regulations that require banks to hold liquid assets can either increase or decrease a bank's incentive to take risk with its remaining ineligible assets. A greater capacity to respond to liquidity stress increases the potential profits a bank would put...

The article addresses the issue of stress testing based on the probability of bankruptcy and a rating migration matrix. The analysis is conducted on a sample of listed companies in Poland in the years 1998-2016, and the forecasts are made for the years 2016-2018. Particular attention is paid to...

We use the option-based Merton (1974) model to derive the implicit probability of default of 218 banks in 24 emerging economies in the period 1995-2009 from their stock prices. This solvency indicator is well comparable between banks in different countries since it does not require the selection...

This paper deals with stress tests for credit risk and shows how exploiting the discretion when setting up and implementing a model can drive the results of a quantitative stress test for default probabilities. For this purpose, we employ several variations of a CreditPortfolioView-style model...

This study shows that the statistical property of the commercial banks' rate of returns can be used to explain the resistance to using Value-at-risk (VaR) and stress tests to determine banks' capital adequacy. We showed that “fat-tail” risk requires more capital than the “normal tail”...

This study provides new evidence regarding reciprocal brokered deposits (RBDs), regulatory responses, and bank risk, contributing to prior studies in four ways. First, using updated financial Call Report data and bank failure data through 2012, we reexamine the moral hazard hypothesis that banks...

In measuring its Operational Risk VaR, a bank needs to pay attention when including external data in its internal loss collection. In principle, these data should be scaled consistently to the specific nature of the bank's risk, but this is not done by the majority of institutions with advanced...

We analyze a reform of insurance companies' capital requirements for mortgage-backed securities. First, credit ratings were replaced as inputs to capital regulation. Second, the redesigned system ensures capital buffers sufficient to withstand expected losses, but insufficient to protect against...