We relax separately two assumptions regarding the Variance Gamma (VG) process and price options accordingly. In the case of the Difference of Gammas model we achieve a better fit to market data than achieved by other comparable models. In the case of the long range dependent VG model, we find...

We investigate the impact of domestic and foreign credit supply shocks on a number of key macroeconomic variables for three small open economies: Australia, Canada and the UK. We find that negative domestic and foreign credit supply shocks together explain, on average, one-third to one-half of...

We present a construction of the Generalized Hyperbolic (GH) subordinator model for a risky asset with dependence. The construction of the subordinator (activity time) process is implemented via superpositions of Ornstein–Uhlenbeck type processes driven by Lévy noise. It unifies, on the basis...