SPSB delivers marketlike exposure to short-term US investment-grade corporate bonds. The fund holds USD-denominated, fixed rate and nonconvertible corporate issues, with 1 to 3 years remaining to maturity. The sectors included are Industrial, Utility, and Financial Institutions, which include both U.S. and non-US corporations. SPSB excludes structured notes with special features, private placements, floating rate securities, and Eurobonds. The underlying index is reconstituted monthly. SPSB uses a sampling index strategy, which purchases a subset of securities that matches the return, and risk characteristics of the underlying index. Prior to Oct. 31, 2025, the fund did not use the State Street brand reference in the fund name.