FX.co ★ U.S. 4-Week Bill Auction Yield Edges Up to 3.640%

The yield on the U.S. 4-week Treasury bill inched higher at the latest auction, with the rate settling at 3.640%, up from the previous level of 3.630%. The update, dated 06 August 2026, reflects a marginal 1 basis point increase in the short-term government borrowing cost.

This slight uptick suggests a modest firming in very short-term funding rates, often watched by investors as a barometer of near-term expectations for Federal Reserve policy and liquidity conditions. While the move is small, shifts in bill yields can influence cash management strategies for institutional investors and short-duration fixed-income positioning.