A drawback of available portfolio credit risk models is that they fail to allow for default risk dependency across loans other than through common risk factors. Thereby, thesemodels ignore that close ties can exist between companies due to legal, financial and business relations. In this paper,...

Does the Church Tower Principle, i.e. geographical proximity between borrowing firm and lending bank, matter in credit risk management? If so, the bank might expose itself to a greater risk by lending to distant firms and should therefore respond by rationing them harder. In this paper we...

While Fannie Mae, Freddie Mac, and private subprime lenders have deservedly garnered the bulk of attention and blame for the mortgage crisis, other federal programs also distort our mortgage market and put taxpayers at risk of having to finance massive financial bailouts. The most prominent of...

This paper shows the importance of interest rate risk and prepayment risk in fixed-rate mortgages in influencing banks’ securitization of mortgages. Banks with longer-maturity liabilities are more capable of taking the interest rate risk and therefore securitize fewer mortgages. In contrast,...

This study analyzes how lease expirations affect the performance of commercial real estate (CRE) properties and how these patterns changed during the COVID-19 crisis. Even before the pandemic, lease expirations were associated with a notable increase in the downside risk to a property's...

How do technological advancements in credit markets affect minority communities? We use the endorsement of FICO credit scores by the Government Sponsored Enterprises (GSEs) in mortgage underwriting to answer this question. The use of credit scores led to the sorting of prime and subprime lenders...

This paper introduces mathematical models to capture the spreading of epidemics to explain the expansion of mortgage default events in the United States. Here we use the state of infectiousness and death to represent the subsequent steps of payment delinquency and default, respectively. Since...

I study whether commercial banks’ loan loss allowances were inadequate during the 2008 financial crisis because bank managers relied on low-quality information to estimate loan losses. To measure the quality of information collected on bank-held mortgages prior to the crisis, I create a bank...

We investigate the spatial dependence between commercial and residential mortgage defaults. A new class of observation-driven frailty factor models is introduced to do so. The idea of dynamic parameters embedded in the class of GAS models is utilized to estimate dynamic models of default risk...