The First Trust NASDAQ® Clean Edge® Smart Grid Infrastructure Index Fund is an exchange-traded fund. The Fund seeks investment results that correspond generally to the price and yield (before the Fund's fees and expenses) of an equity index called the NASDAQ OMX® Clean Edge® Smart Grid Infrastructure IndexSM. The index is designed to track the performance of common stocks in the grid and electric energy infrastructure sector.The index includes companies that are primarily engaged and involved in electric grid, electric meters and devices, networks, energy storage and management, and enabling software used by the smart grid infrastructure sector.