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,...

We investigate volatility models and their forecasting abilities for three types of petroleum futures contracts traded on the New York Mercantile Exchange (West Texas Intermediate crude oil, heating oil #2, and unleaded gasoline) and suggest some stylized facts about the volatility of these...

This paper investigates the return linkages and volatility transmission between oil and stock markets in the Gulf Cooperation Council (GCC) countries over the recent period 2005-2010. We employ a recent generalized VAR-GARCH approach which allows for transmissions in return and volatility. In...