State Street SPDR Portfolio Ultra Short T-Bill ETF
SPTU
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- State Street SPDR Portfolio Ultra Short T-Bill ETF (SPTU) is a passively managed exchange-traded fund that seeks to track the price and yield performance, before fees and expenses, of the ICE BofA US Treasury Bill Index. The ETF provides targeted exposure to U.S. dollar-denominated Treasury bills publicly issued in the U.S. domestic market with remaining maturities greater than or equal to one month and less than 12 months; it employs a sampling strategy to hold a representative subset of index securities weighted by market capitalization, which is rebalanced monthly on the last business day. Launched on October 7 or 8, 2025, by State Street Investment Management (formerly State Street Global Advisors), the fund features an ultra-low gross expense ratio of 0.05%, positioning it among the lowest-cost options in the ultrashort bond category; it forms part of the expanded State Street SPDR Portfolio US Treasury suite, including SPTS (short-term), SPTI (intermediate-term), SPTL (long-term), and SPTB (broad Treasury), within the broader SPDR Portfolio ETF suite offering low-cost core exposure to equities and fixed income. Headquartered in Boston, Massachusetts, as an indirect subsidiary of State Street Corporation, SPTU targets institutional and retail investors seeking income generation, liquidity management, risk mitigation, and collateral for derivatives under CFTC regulations; its portfolio emphasizes high credit quality (average AA rating) with low duration of approximately 0.19 years and a yield-to-worst around 3.99% as of late 2025. In a key recent development, State Street Investment Management launched SPTU in October 2025 as its first ultra-short fixed income ETF, enhancing the low-cost SPDR Portfolio suite amid strong fixed income ETF inflows exceeding $300 billion year-to-date; this strategic expansion addresses investor demand for flexible, short-end yield curve exposure amid evolving Federal Reserve policies and liquidity needs, with no subsequent major acquisitions, partnerships, or reorganizations reported. The fund operates primarily in the U.S. market, with total net assets reaching approximately $10 million shortly after inception and daily pricing on U.S. exchanges.