This fund strategically allocates its assets to a variety of financial instruments, which ProShare Advisors intends to collectively mirror the performance of its underlying index. The index itself is constructed to track the price fluctuations of three distinct West Texas Intermediate (WTI) Crude Oil futures contract schedules, all actively traded on the NYMEX exchange. Each of these contract schedules contributes an identical one-third weighting to the index, with this equal distribution being re-established during semi-annual rebalancing events held in March and September.