The yield on the U.S. 4-week Treasury bill inched higher at the latest auction, rising to 3.700% from the previous level of 3.650%. The updated figure was recorded on 3 September 2026.
This modest increase signals a slight uptick in short-term borrowing costs for the U.S. government and may reflect evolving expectations around near-term monetary policy and liquidity conditions. The 4-week bill is a key benchmark for very short-term interest rates, closely watched by money market participants and institutional investors managing cash and short-duration portfolios.
