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Working Paper
Credit risk modeling in segmented portfolios: an application to credit cards
The Great Recession offers a unique opportunity to analyze the performance of credit risk models under conditions of economic stress. We focus on the performance of models of credit risk applied to risk-segmented credit card portfolios. Specifically, we focus on models of default and loss and analyze three important sources of model risk: model selection, model specification, and sample selection. Forecast errors can be significant along any of these three model-risk dimensions. Simple linear regression models are not generally outperformed by more complex or stylized models. The impact of ...
Working Paper
Flight to Liquidity or Safety? Recent Evidence from the Municipal Bond Market
We examine the effects of the COVID-19 pandemic and subsequent monetary and fiscal policy actions on municipal bond market pricing. Using high-frequency trading data, we estimate key policy events at the peak of the crisis by focusing on a sample of bonds within a narrow window before and after each policy event. We find that policy interventions, in particular those with explicit credit backstops, were effective in alleviating municipal bond market stress. Next, we exploit daily variation in traded municipal bonds and virus exposure across U.S. counties. We find a shift in how bond investors ...
Working Paper
Understanding the Exposure at Default Risk of Commercial Real Estate Construction and Land Development Loans
We study and model the determinants of exposure at default (EAD) for large U.S. construction and land development loans from 2010 to 2017. EAD is an important component of credit risk, and commercial real estate (CRE) construction loans are more risky than income producing loans. This is the first study modeling the EAD of construction loans. The underlying EAD data come from a large, confidential supervisory dataset used in the U.S. Federal Reserve’s annual Comprehensive Capital Assessment Review (CCAR) stress tests. EAD reflects the relative bargaining ability and information sets of ...
Working Paper
On the Economics of Discrimination in Credit Markets
This paper develops a general equilibrium model of both taste-based and statistical discrimination in credit markets. We find that both types of discrimination have similar predictions for intergroup differences in loan terms. The commonly held view has been that if there exists taste-based discrimination, loans approved to minority borrowers would have higher expected profitability than to majorities with comparable credit background. We show that the validity of this profitability view depends crucially on how expected loan profitability is measured. We also show that there must exist ...
Working Paper
The Bank as Grim Reaper : Debt Composition and Bankruptcy Thresholds
We offer a model and evidence that private debtholders play a key role in setting the endogenous asset value threshold below which corporations declare bankruptcy. The model, in the spirit of Black and Cox (1976), implies that the recovery rate at emergence from bankruptcy on all of the firm's debt taken together is increasing in the pre-bankruptcy share of private debt in all debt. Empirical evidence supports this and other implications of the model. Indeed, debt composition has a more economically material empirical influence on recovery than all other variables we try taken together.
Discussion Paper
Why Did the Recent Oil Price Declines Affect Bond Prices of Non-Energy Companies?
Oil prices plunged 65 percent between July 2014 and December of the following year. During this period, the yield spread?the yield of a corporate bond minus the yield of a Treasury bond of the same maturity?of energy companies shot up, indicating increased credit risk. Surprisingly, the yield spread of non?energy firms also rose even though many non?energy firms might be expected to benefit from lower energy?related costs. In this blog post, we examine this counterintuitive result. We find evidence of a liquidity spillover, whereby the bonds of more liquid non?energy firms had to be sold to ...
Working Paper
Credit Default Swaps
Credit default swaps (CDS) are the most common type of credit derivative. This paper provides a brief history of the CDS market and discusses its main characteristics. After describing the basic mechanics of a CDS, I present a simple valuation framework that focuses on the relationship between conditions in the cash and CDS markets as well as an approach to mark to market existing CDS positions. The discussion highlights how the 2008 global financial crisis helped shape current practices and conventions in the CDS market, including the widespread adoption of standardized coupons and upfront ...
Working Paper
Bank Failures, Capital Buffers, and Exposure to the Housing Market Bubble
We empirically document that banks with greater exposure to high home price-to-income ratio regions in 2005 and 2006 have higher mortgage delinquency and charge-off rates and significantly higher probabilities of failure during the last financial crisis even after controlling for capital, liquidity, and other standard bank performance measures. While high price-to-income ratios present a greater likelihood of house price correction, we find no evidence that banks managed this risk by building stronger capital buffers. Our results suggest that there is scope for improved measures of mortgage ...
Working Paper
Optimal Bank Regulation in the Presence of Credit and Run Risk
We modify the Diamond and Dybvig (1983) model of banking to jointly study various regulations in the presence of credit and run risk. Banks choose between liquid and illiquid assets on the asset side, and between deposits and equity on the liability side. The endogenously determined asset portfolio and capital structure interact to support credit extension, as well as to provide liquidity and risk-sharing services to the real economy. Our modifications create wedges in the asset and liability mix between the private equilibrium and a social planner's equilibrium. Correcting these distortions ...