This paper uses the market-standard Gaussian copula model to show that fair spreads on CDO tranches are much higher than fair spreads on similarly-rated corporate bonds. It implies that credit ratings are not sufficient for pricing, which is surprising given their central role in structured...

Die vorliegende Dissertation umfasst drei Arbeiten zu unterschiedlichen Aspekten der Monitoring-Funktion von Kreditratings im Sekundärmarkt für Kreditrisiken. Basierend auf einem umfassenden Datensatz über den Ratingverlauf aller von Standard & Poor's, Moody's und Fitch zwischen 1985 und 2012...

Structured finance instruments represent a form of securitization technology which can be defined by the characteristics of pooling of financial assets, delinking of the credit risk of the asset pool from the credit risk of the originating intermediary, and issuance of tranched liabilities...