The PIMCO Mortgage Opportunities and Bond Fund Class INSTL (PMZIX) is a mutual fund that focuses on investing in mortgage-backed securities and other fixed income instruments. It aims to provide investors with a high level of current income while also seeking to preserve capital. This fund is managed by PIMCO, a global investment management firm known for its expertise in fixed income investments. As an institutional class fund, it is designed for larger investors such as institutions and high net worth individuals. PMZIX offers a diversified portfolio of mortgage-related assets, providing potential for both income and capital appreciation.