Financial innovations are a common explanation for the rise in credit card debt and bankruptcies. To evaluate this story, we develop a simple model that incorporates two key frictions: asymmetric information about borrowers' risk of default and a fixed cost of developing each contract lenders...

This paper develops a theory of the secondary market trading of financial securitities in which endogenous asset market dynamics generate periods of growing aggregate credit volumes and falling credit standards even in the absence of "financial shocks." Falling credit standards in turn lead to...