“…Our goal is to forecast the West Texas Intermediate (WTI) crude oil spot prices using total OECD petroleum inventory levels, surplus production capacity and the Chicago Board Options Exchange (CBOE) Volatility Index (VIX) combined with an information-theoretic (IT) approach. Oil inventories are widely accepted as one of the most important predictors of world oil prices, because oil inventories reflect the demand and supply imbalances that drive fluctuations in the oil price (see Ye et al, 2002Ye et al, , 2005Ye et al, , 2006aMerino and Ortiz, 2005;Manera et al, 2007;He et al, 2010;Kilian and Murphy, 2014;Pang et al, 2011). Surplus production capacity is also included in our model to reflect the increasing importance of producers' abilities to meet growing demand for oil (Ye et al, 2009).…”