First Trust Exchange-Traded Fund VIII - First Trust TCW Opportunistic Fixed Income ETF is an exchange traded fund launched and managed by First Trust Advisors LP. The fund is co-managed by TCW Investment Management Company. It invests in the fixed income markets across the globe. The fund invests 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, municipal bonds, collateralized loan obligations, Rule 144A securities, and other debt securities bearing fixed, floating or variable interest rates of any maturity. It seeks to benchmark the performance of its portfolio against the Bloomberg U.S. Aggregate Bond Index. First Trust Exchange-Traded Fund VIII - First Trust TCW Opportunistic Fixed Income ETF was formed on February 14, 2017 and is domiciled in the United States.