We introduce a tractable class of non-affine price processes with multifrequency stochastic volatility and jumps. The specifi cations require few fixed parameters and deliver fast option pricing. One key ingredient is a tight link between jumps and volatility regimes, as asset pricing theory...

French Abstract: Les Credit Default Swaps (CDS) sont de plus en plus populaires pour la protection contre les défauts et la spéculation. Cette étude se concentre sur la modélisation précise du défaut en temps continu, puis sur l'evaluation des CDS. De nombreux cas entraînent l'annulation...

Markets makers quote many option categories in terms of implicit volatility. In doing so, they can reactivate the Black and Scholes model which assumes that the volatility of an option underlying is constant while it is highly variable. First of all, this article, whose purpose is very...