The last five years have witnessed a great momentum in the research into measures of financial risk. After many years of ad-hoc and non-consistent measures, now the problem is finally well formulated and some useful and very user-friendly solutions have been proposed. These new measures of risk...

Three processes reflecting persistence of volatility are initially formulated by evaluating three Lévy processes at a time change given by the integral of a mean-reverting square root process. The model for the mean-reverting time change is then generalized to include non-Gaussian models that...

Cet ouvrage décrit l'organisation d'un marché d'actions et expose les concepts de base de la gestion de portefeuille et des risques : la rentabilité, la volatilité, l'hostilité au risque, les principes et les avantages de la diversification. Il présente les modèles linéaires...