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Working Paper
Forecasting credit card portfolio losses in the Great Recession: a study in model risk
Credit card portfolios represent a significant component of the balance sheets of the largest US banks. The charge?off rate in this asset class increased drastically during the Great Recession. The recent economic downturn offers a unique opportunity to analyze the performance of credit risk models applied to credit card portfolios under conditions of economic stress. Specifically, we evaluate three potential sources of model risk: model specification, sample selection, and stress scenario selection. Our analysis indicates that model specifications that incorporate interactions between policy ...
Working Paper
The Impact of Post Stress Tests Capital on Bank Lending
We investigate one channel through which the annual bank stress tests, as part of the Federal Reserve?s Comprehensive Capital Analysis and Review (CCAR) review, could unexpectedly affect the provision of bank credit. To quantify the impact of the stress tests on lending, we compare the capital implied by the supervisory stress tests with the level of capital implied by the banks? own models, a measure we call the capital gap. We then study the impact of the capital gap on the loan growth of BHCs subject to supervisory or bank-run stress tests. Consistent with previous results in the bank ...
Working Paper
Climate Change and the Role of Regulatory Capital: A Stylized Framework for Policy Assessment
This paper presents a stylized framework to assess conceptually how the financial risks of climate change could interact with a regulatory capital regime. We summarize core features of a capital regime such as expected and unexpected losses, regulatory ratios and risk-weighted assets, and minimum requirements and buffers, and then consider where climate-related risk drivers may be relevant. We show that when considering policy implications, it is critically important to be precise about how climate change may impact the loss-generating process for banks and to be clear about the specific ...