The investment seeks to replicate as closely as possible, before fees and expenses, the price and yield performance of the Market Vectors® Global Oil Refiners Index. The fund normally invests at least 80% of its total assets in securities that comprise the fund's benchmark index. The index is comprised of equity securities and depositary receipts of companies that generate at least 50% of their revenues from (or, in certain circumstances, have at least 50% of their assets related to) crude oil refining. The fund is non-diversified.