SCUS primarily invests in short-term debt securities, all denominated in US dollars, and issued by both US and foreign entities. These include commercial paper, promissory notes, corporate bonds, and US government obligations. The fund selects securities based on credit quality, focusing on those rated investment grade or deemed of equivalent quality by the fund adviser. SCUS aims to keep its portfolio's effective duration to no more than one year. In response to unusual market conditions, the fund may temporarily hold up to 100% of its assets in cash or high-quality short-term investments. Through active management, SCUS seeks to provide current income while maintaining capital preservation and liquidity, which may lead to higher portfolio turnover.