This paper proposes several frameworks to estimate the appropriate default correlations for structured products, each of which jointly considers the role of co-movements in modeled risk characteristics and un-modeled systematic risk, or 'frailty'. We contrast our estimates with credit rating...

We examine whether “rating shopping” or “rating catering” is a more accurate characterization of rating agency interactions regarding collateralized debt obligations (CDOs) prior to the credit crisis. Although investors paid a premium for dual-ratings, AAA CDO tranches rated by both...