SPDR Bloomberg 1-3 Month T-Bill ETF (BIL) is an exchange-traded fund that seeks to provide investment results that, before fees and expenses, correspond generally to the price and yield performance of the Bloomberg 1-3 Month U.S. Treasury Bill Index. The fund primarily invests in a market-weighted portfolio of publicly issued zero-coupon U.S. Treasury bills with remaining maturities between 1 and 3 months; it employs a representative sampling technique to replicate the index, rebalancing monthly to replace maturing securities with new issues; holdings typically number 18 to 24, featuring short-duration, investment-grade fixed income instruments with minimal interest rate risk exposure. Launched on May 25, 2007, and issued by State Street Global Advisors (SSGA), a division of State Street Corporation headquartered in Boston, Massachusetts, BIL operates globally through U.S. exchanges like NYSE Arca and targets institutional and retail investors seeking low-volatility cash equivalents, money market alternatives, or short-term liquidity. As of late 2025, the fund manages approximately $42.85 billion in assets under management, with a gross expense ratio of 0.14%, monthly dividend distributions yielding around 4.14%, and a portfolio beta near zero. In recent developments, SSGA rebranded to State Street Investment Management in June 2025 to emphasize its "One State Street" collaborative approach across asset management services; the firm announced plans to close and liquidate certain underperforming ETFs, though BIL remains a core offering amid sustained inflows exceeding $8.79 billion over the past year; additionally, in January 2025, SSGA partnered with European neo-broker BUX to expand access to SPDR ETFs, including BIL, for retail investors across Europe, enhancing distribution and educational resources.