This ay have an effect on the entire energy complex. Note USC trades as part of the "metals and mining sector".
This week's release of energy inventories from the Department of Energy (DoE) showed crude oil inventories rose by a huge and unexpected amount.
Wall Street was looking for inventories to increase by 1.55 million barrels. The number reported was actually 6.807 million barrels — the biggest weekly increase in inventories since September of 2012.
This puts current inventory levels near their highest levels of the year compared to the average price for this time of year.