to model a credit quality process as an Itô integral with respect to a Brownian motion with a stochastic volatility … conditional default probabilities and credit spreads. An example for a volatility process is the square root of a Lévy …

, a credit quality process is driven by an Itô integral with respect to a Brownian motion with stochastic volatility … default probabilities and credit spreads. An example for a volatility process is the square root of a Lévy-driven Ornstein …-Uhlenbeck process. We show that jumps in the volatility translate into jumps in credit spreads. We examine the dynamics of the OS …

Tests for the existence and the sign of the volatility risk premium are often based on expected option hedging errors … the premium is the same as the sign of the mean hedging error for a large class of stochastic volatility option pricing …

volatility risk, for dollar, euro and pound rates at a daily frequency, between October 1998 and August 2006. The measurement of … the volatility risk premium rests on a simple model according to which variance forecasts are generated under the … large - negative - compensation for volatility risk, a component which was smaller in absolute terms - but not relative to …

stochastic volatility of asset prices and to give theoretical arguments for empirically well documented facts. We show that … stochastic volatility. …

conditioning on skewness increases the predictive power of the volatility spread and that coefficient estimates accord with theory … of the volatility spread to skewness. We measure skewness from option prices and test these predictions. We find that … the term structure of option-implied volatility, skewness and kurtosis and find that time-dependence in returns has a …

including stochastic volatility models. A robust hedging strategy avoids any losses as long as the realised volatility stays …

probability of macroeconomic catastrophes à la Barro (2006), and to the case of an uncertain trend or volatility of growth à la …