[fre] Afin de bien comprendre ces questions, nous commencerons par rappeler le principe des notations et classements à partir d’exemples simples. Les illustrations développées dans ce papier montrent que notations et classements dépendent de l’horizon d’investissement, de...

[fre] Le développement récent des marchés financiers s'est accompagné d'une utilisation croissante de techniques et de modèles mathématiques. Dans cet article, nous discuterons le pourquoi d'une telle évolution, en essayant de dégager les apports principaux de cette mathématisation, et...

In order to obtain exact distributional results without imposing restrictive parametric assumptions, several rank counterparts of the Dickey-Fuller statistic are considered. In particular, a rank counterpart of the score statistic is suggested which appears to have attractive theoretical...

We discuss the econometric features of securitization: descriptive or structural analysis of prepayment behaviours, consequences on the pricing of mortgage backed securities. We insist on the distinction between disaggregated approaches based on individual loans, and aggregated ones based on...

We discuss the main opened questions related to credit risk, that is the default risk of a borrower. These questions concern the prediction of default (term structure of default, default correlation, recovery rate, determination of the required capital), the pricing of debts (according to risk...