State Street Federal Government Money Market Fund - Adv is a government money market mutual fund designed to provide investors with a stable and liquid cash management solution. Its primary objective is to maximize current income while preserving capital and maintaining liquidity, with a targeted stable net asset value (NAV) of $1.00 per share. The fund invests substantially all its assets in high-quality, short-term instruments, primarily obligations issued or guaranteed by the U.S. government or its agencies and instrumentalities—such as U.S. Treasury securities and repurchase agreements backed by government securities. The fund also utilizes a master-feeder structure, holding interests in a broader U.S. Government Portfolio that mirrors its conservative investment policies. Key features include a high degree of liquidity, low credit risk, and a portfolio composition that prioritizes safety, making it an essential tool for institutional cash management and short-term treasury needs. With an AAAm rating from S&P and AAAmmf from Fitch, the fund is engineered to be a reliable vehicle for investors seeking safety and immediate access to funds without exposure to equity or corporate debt markets.