ICSH invests in fixed-and floating-rate securities with a targeted weighted-average maturity of less than 180 days. Holdings may include a variety of USD-denominated, investment-grade debt from both US and non-US government and corporate issuers including privately issued securities, MBS, ABS, repurchase agreements, money market instruments and investment companies. Short-term investments must have A-2, P-2 or F2 or better ratings. ICSH may invest a significant portion in securities issued by financial institutions, such as broker-dealers and insurance companies. The fund seeks current income while maintaining extremely low interest-rate risk, which might make it appealing for some in an uncertain rate environment. Prior to December 2, 2020, ICSH fund name was branded as iShares Ultra Short-Term Bond ETF. Prior to October 10, 2024, the fund used Blackrock for branding purposes instead of iShares.