Barclays Capital Aluminum Pure Beta TR Index – ETF Tracker

The index is comprised of a single exchange traded futures contract, except during the roll period when the Index may be comprised of two futures contracts. However, unlike many commodity indices, which roll their exposure to the corresponding futures contract on a monthly basis in accordance with a pre-determined roll schedule, the Index may roll into one of a number of futures contracts with varying expiration dates, as selected using the Barclays Capital Pure Beta Series 2 Methodology.