FX.co ★ Yield on U.S. 4-Week Bills Edges Up to 3.640% at Latest Auction

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 3.625% at the previous sale. The updated figure was recorded on 05 March 2026.

The slight uptick in the short-term borrowing cost suggests a modest firming in very short-term rates in the U.S. bill market. While the move is small, changes in 4-week bill yields are closely watched by money market participants as a benchmark for near-term funding conditions and cash management strategies.