The investment seeks to replicate as closely as possible, before fees and expenses, the price and yield performance of the Market Vectors? Global Coal Index. The fund normally invests at least 80% of its total assets in securities that comprise the fund's benchmark index. The Coal Index is comprised of companies that generate at least 50% of their revenues from (or, in certain circumstances, have at least 50% of their assets related to): coal operation (production and mining), coal transportation and production of coal mining equipment as well as coal storage. It is non-diversified.