First Trust NASDAQ Clean Edge Green Energy Index Fund (the Fund), formerly First Trust NASDAQ Clean Edge U.S. Liquid Series Index Fund, seeks investment results that correspond generally to the price and yield of an equity index called the NASDAQ Clean Edge Green Energy Index (the Index) (formerly NASDAQ Clean Edge U.S. Liquid Series Index). The Index is an equity index designed to track the performance of clean energy companies that are publicly traded in the United States, and includes companies engaged in the manufacturing, development, dist...