Working Paper
Determinants and consequences of mortgage default
Koijen, Ralph S. J.; Demyanyk, Yuliya; Hemert, Otto van (2010)
We study a unique data set of borrower-level credit information from TransUnion, one of the three major credit bureaus, which is linked to a database containing detailed information on the borrowers? mortgages. We find that the updated credit score is an important predictor of mortgage default in addition to the credit score at origination. However, the 6-month change in the credit score also predicts default: A positive change in the credit score significantly reduces the probability of delinquency or foreclosure. Next, we analyze the consequences of default on a borrower?s credit score. The ...
Working Papers (Old Series) , Paper 1019

Working Paper
Understanding the subprime mortgage crisis
Demyanyk, Yuliya; Hemert, Otto van (2007)
We analyze the subprime mortgage crisis: an unusually large fraction of subprime mortgages originated in 2006 being delinquent or in foreclosure only months later. We utilize a loan-level database, covering about half of all US subprime mortgages, and identify two major causes. First, over the past five years, high loan-to-value borrowers increasingly became high-risk borrowers, in terms of elevated delinquency and foreclosure rates. Lenders were aware of this and adjusted mortgage rates accordingly over time. Second, the below-average house price appreciation in 2006-2007 further contributed ...
Supervisory Policy Analysis Working Papers , Paper 2007-05

Conference Paper
Understanding the subprime mortgage crisis
Demyanyk, Yuliya; Hemert, Otto van (2009-01)
Using loan-level data, we analyze the quality of subprime mortgage loans by adjusting their performance for differences in borrower characteristics, loan characteristics, and macroeconomic conditions. We find that the quality of loans deteriorated for six consecutive years before the crisis and that securitizers were, to some extent, aware of it. We provide evidence that the rise and fall of the subprime mortgage market follows a classic lending boom-bust scenario, in which unsustainable growth leads to the collapse of the market. Problems could have been detected long before the crisis, but ...
Proceedings , Issue Jan

Conference Paper
Understanding the subprime mortgage crisis
Demyanyk, Yuliya; Hemert, Otto van (2008)
Proceedings , Paper 1092