ProShares K-1 Free Crude Oil ETF (OILK) Stock Price, Quote, News & History | Benzinga

The Fund invests in financial instruments that ProShare Advisors believes, in combination, should track the performance of the Index. The Index is designed to measure the performance of three separate contract schedules for West Texas Intermediate (WTI) Crude Oil futures. One-third of the index measures the performance of contracts that expire monthly. Each month, this portion of the Index rolls from the current futures contract into the following months contract. Another third of the Index measures the performance of futures contracts that expire annually in June. In March, this portion of the Index rolls from the current June futures contract into the following years June contract. The remaining third of the Index measures the performance of futures contracts that expire annually in December. In September, this portion of the Index rolls from the current December futures contract into the following years December contract. The Index is reset to equal weight in March and September. The Index is constructed and maintained by Bloomberg Index Services Limited.