Fidelity Union Street Trust II
A registered investment trust that serves as the legal container for Fidelity mutual funds, best known as the home of the Fidelity Municipal Money Market Fund (FTEXX). That fund, launched in 1980, aims to give everyday savers tax-free income by investing in short-term municipal securities issued by cities and states. The "Union Street" name is an administrative label rather than a nod to any historic bank, a naming quirk common to the series trusts that quietly sit behind familiar fund tickers.
Fidelity Municipal Money Market Fund (FTEXX) is a retail money market fund that seeks high interest income exempt from federal income tax by investing in municipal money market securities.