Fidelity Merrimack Street Trust - Fidelity Tactical Bond ETF is an exchange traded fund launched and managed by Fidelity Management & Research Company LLC. The fund is co-managed by Fidelity Management & Research (U.K.) Limited, Fidelity Management & Research (Japan) Limited and Fidelity Management & Research (Hong Kong) Limited. It invests in fixed income markets of global region. The fund invests directly and through derivatives in U.S. government securities including treasury securities, investment-grade corporate and other debt, lower-quality debt securities, investment-grade securitized debt securities, floating rate loans and other floating rate securities, inflation-protected debt securities, hybrid and preferred securities and contingent convertible securities of varying maturities. It uses derivatives such as futures, forwards, options, swaps to create its portfolio. The fund employs fundamental and quantitative analysis to create its portfolio. Fidelity Merrimack Street Trust - Fidelity Tactical Bond ETF was formed on January 24, 2023 and is domiciled in the United States.