The fund will normally invest at least 80% of its total assets in the common stocks or an exchange-traded fund ("ETF") that comprise the index. The index is a modified market-capitalization weighted index designed to tactically allocate exposure to one of three allocations: (i) Nasdaq US 500 Large Cap Index TM; (ii) Nasdaq US 500 Large Cap Equal Weight Index TM; or (iii) First Trust Enhanced Short Maturity ETF ("FTSM") (each, an "Underlying Allocation"), based on daily relative strength readings.