The First Trust Nasdaq Clean Edge Green Energy ETF seeks to replicate, to the extent possible, the performance of an index of U.S. listed companies designed to track the performance of clean energy companies engaged in manufacturing, development, distribution and installation of clean-energy technologies including, but not limited to, solar photovoltaics, wind power, advanced batteries, fuel cells, and electric vehicles, initially the NASDAQ Clean Edge Green Energy Index. *On February 17, 2021, the First Trust AlphaDEX U.S. Financial Sector Index ETF changed its investment objectives to seek to replicate, to the extent possible, the performance of an index of U.S. listed companies designed to track the performance of clean energy companies engaged in manufacturing, development, distribution and installation of clean%u2010energy technologies including, but not limited to, solar photovoltaics, wind power, advanced batteries, fuel cells, and electric vehicles, initially the NASDAQ Clean Edge Green Energy Index.