F/m US Treasury 3 Month Bill ETF (TBIL) is an exchange-traded fund that seeks to track the performance, before fees and expenses, of the Bloomberg US Treasury Bellwether 3M Total Return USD Unhedged Index by investing primarily in the most recently issued, on-the-run 3-month US Treasury Bill; it offers investors simplified exposure to short-duration US government securities with monthly dividend distributions, intraday liquidity, minimized transaction costs from automatic rolling of maturities, and potential tax efficiencies inherent to the ETF structure. Launched on August 9, 2022 and listed on NASDAQ, TBIL operates within the ultrashort bond segment of the fixed income market, targeting institutional and retail investors seeking low-risk cash alternatives backed by the full faith and credit of the US government. The ETF is issued by The RBB Fund, Inc. and managed by F/m Investments LLC, an independent asset management firm founded in 2018 and headquartered in Washington, DC, with additional offices in Boston, Chicago, Milwaukee, St. Louis, and Los Angeles.
In recent developments, TBIL surpassed $5 billion in assets under management (AUM) as of March 2025, cementing its position as the leading short-duration Treasury ETF, while F/m Investments' total ETF AUM exceeded $7 billion within 30 months of launching its US Benchmark Series, which includes TBIL among ten Treasury ETFs providing precise access to points along the US Treasury yield curve. F/m Investments expanded its fixed-income offerings with the launch of the F/m Ultrashort Treasury Inflation-Protected Security ETF (RBIL) in early 2025, the industry's first dedicated ultrashort duration TIPS ETF, which amassed $67 million in AUM within two weeks and complements TBIL by adding inflation protection with minimal interest rate risk. The firm also initiated the US Credit Series in January 2024, tracking an investable index of investment-grade credit, and filed for a novel SEC exemption to enable a mutual fund share class of its ETFs for 401(k) investors. TBIL received a nomination for the ETF.com Awards in 2023 and earned recognition as the Best New ETF.