ETFS lists forward crude oil ETC

The ETC tracks the DJ-UBS Crude Oil 3 Month Forward Sub-index, which rolls every two months between the fourth and sixth WTI oil futures contract. ETFS says exposure to WTI futures between these months means the index may gain when the futures curve is in backwardation. This refers to when the price of a commodity for a future delivery is lower than the spot price. Conversely, this exposure also mitigates the roll yield when the futures curve is in contango, which is where the price of a commodity for future delivery is higher than the spot price. ETFS says the index returned 30.8%...