Each week, the Energy Information Administration measures the crude oil inventories of US firms. If levels fall low, then oil prices tend to rise, if levels have excess supply petroleum prices mad fall. Fluctuations in commodity markets sometimes have affects on currency values.
US crude oil inventory piled 3 million more barrels to a total of 296.9million barrels in the week ended July 11. These supply "shocks" have recently provided drawdowns in crude oil prices. Oil prices were down $7 at one point of the day.
