First Trust Exchange-Traded Fund IV - First Trust High Income Strategic Focus ETF is an exchange traded fund launched and managed by First Trust Advisors LP. The fund invests in fixed income markets of global region. The fund invests through other funds in securities issued or guaranteed by the U.S. government or its agencies, instrumentalities or U.S. government-sponsored entities, treasury inflation protected securities, residential and commercial mortgage-backed securities, asset-backed securities, U.S. corporate bonds, fixed income securities issued by non-U.S. corporations and governments, including issuers with significant ties to emerging market countries, bank loans, including first lien senior secured floating rate bank loans and covenant-lite loans, municipal bonds, collateralized loan obligations, rule 144A securities; and other debt securities that are rated D or below by S&P or Fitch or C or below by Moody's. It invests in securities of varying maturities. It employs fundamental analysis with bottom-up and top-down security picking approach to create its portfolio. The fund seeks to benchmark the performance of its portfolio against the Bloomberg U.S. Aggregate Bond Index, the Russell 3000 Index, a prior Blended Index comprising of the Alerian MLP Index, the Dow Jones U.S. Select Dividend Index, the ICE BofA Fixed Rate Preferred Securities Index, the ICE BofA U.S. High Yield Index, the Bloomberg EM USD Aggregate Index and the Bloomberg U.S. MBS Index and a Blended Index comprising of 70% of the Bloomberg US Aggregate Bond Index and 30% of the ICE BofA U.S. High Yield Constrained Index. First Trust Exchange-Traded Fund IV - First Trust High Income Strategic Focus ETF was formed on August 13, 2014 and is domiciled in the United States.