Real operational loss data exhibit in some cases power laws on a wide part of the tail distributions, with sharp deviations far on the right suggesting they decrease to zero faster at infinity. Taking into account such deviations when modelling operational risk leads to great differences in VaR...

We introduce a multivariate diffusion model that is able to price derivative securities featuring multiple underlying assets. Each asset volatility smile is modeled according to a density-mixture dynamical model while the same property holds for the multivariate process of all assets, whose...

The Multi Variate Mixture Dynamics model is a tractable, dynamical, arbitrage-free multivariate model characterized by transparency on the dependence structure, since closed form formulae for terminal correlations, average correlations and copula function are available. It also allows for...