The investment seeks to replicate as closely as possible, before fees and expenses, the price and yield performance of the NYSE® Arca Environmental Services IndexTM. The fund normally invests at least 80% of its total assets in common stocks and ADRs of companies involved in the environmental services industry. The index is designed to measure the performance of widely held, highly capitalized companies engaged in business activities that may benefit from the global increase in demand for consumer waste disposal, removal and storage of industrial by-products, and the management of associated resources. It is non-diversified.