Fund Description: First Trust Water ETF, formerly First Trust ISE Water Index Fund, is an exchange-traded index fund or Index ETF which is a separate investment portfolio of First Trust Exchange-Traded Fund, an open-end investment management company. INVESTMENT OBJECTIVE: The First Trust Water ETF seeks investment results that correspond generally to the price and yield, before fees and expenses, of the ISE Water Index. INDEX DESCRIPTION: The ISE Water Index is a modified market capitalization-weighted index comprised of exchange-listed companies that derive a substantial portion of their revenues from the potable and wastewater industry. The Index begins by establishing the total population of stocks in the potable and wastewater industry and eliminates stocks which do not meet the Index’s baseline eligibility requirements. To meet Index eligibility, a stock must satisfy market capitalization, liquidity and weighting concentration requirements. The Index selects the top 36 stocks in the industry by market capitalization. FUND STRATEGY: The Fund will normally invest at least 90% of its total assets in common stocks that comprise the Index. The Fund, using an indexing investment approach, attempts to replicate, before expenses, the performance of the Index. In seeking to achieve the Fund's investment objective, the Fund generally will invest in all of the stocks comprising the Index in proportion to their weightings in the Index. However, under various circumstances, it may not be possible or practicable to purchase all of those stocks in those weightings. In those circumstances, the Fund may purchase a sample of stocks in the Index. There may also be instances in which the adviser may choose to overweight certain stocks in the Index, purchase securities not in the Index which the adviser believes are appropriate to substitute for certain securities in the Index, use futures or other derivative instruments, or utilize various combinations of the above techniques in seeking to track the Index. The Fund may sell stocks that are represented in the Index in anticipation of their removal from the Index or purchase stocks not represented in the Index in anticipation of their addition to the Index. FUND MANAGEMENT: First Trust Advisors L.P. serves as the investment adviser for the Fund.