The standard vector error correction (VEC) model assumes the iid normal distribution of disturbance term in the model. This paper extends this assumption to include GARCH process. We call this model as VEC-GARCH model. However as the number of parameters in a VEC-GARCH model is large, the...

This paper evaluates if and how speculation affects the volatility of commodity futures: it distinguishes between short term and long term measures of speculation and investigates if the impact on volatility is different. Speculation is measured by means of four indexes: scalping, Working’s T,...

Options should play an important role in asset allocation. They allow for kernel spanning and provide access to additional (priced) risk factors such as stochastic volatility and negative jumps. Unfortunately, traditional methods of asset allocation (e.g. mean-variance optimization) are not...