First Trust Multi Cap Value AlphaDEX Fund (the Fund) is an exchange-traded fund. The Fund seeks investment results that correspond generally to the price and yield of an equity index called the Defined Multi Cap Value Index (the Index). The Index is an enhanced index created and administered by Standard & Poor’s, which selects stocks from the S&P Composite 1500/Citigroup Value Index. Standard & Poor’s constructs the Index by employing the AlphaDEX stock selection methodology to rank the stocks from the three component indices that comprise the S&P Composite 1500/Citigroup Value Index, which are the S&P 500/Citigroup Value Index, the S&P MidCap 400/Citigroup Value Index and the S&P SmallCap 600/Citigroup Value Index. The Index is reconstituted and rebalanced quarterly. The Fund will normally invest at least 90% of its total assets in common stocks that comprise the Index. The Fund’s investment advisor is First Trust Advisors L.P.