The State Street Institutional Investment Trust Treasury Fund Institutional (TRIXX) is a mutual fund that focuses on investing in high-quality, short-term debt securities issued by the US government. This fund is designed for institutional investors and aims to provide a stable and low-risk investment option. With a ticker symbol of TRIXX, this fund is managed by State Street Global Advisors and offers a diversified portfolio of Treasury bills, notes, and bonds. It is a suitable choice for investors looking for a conservative and liquid investment option.