FX.co ★ Yield on U.S. 4-Week Bill Edges Lower to 3.625% in Latest Auction

The yield on the U.S. 4-week Treasury bill slipped slightly in the latest auction, with the rate easing to 3.625% from 3.630% previously, according to data updated on 19 February 2026.

The marginal decline suggests a modest uptick in demand for the shortest-dated U.S. government debt, as investors continue to seek safety and liquidity in the front end of the yield curve. While the move is small, such incremental changes in bill yields are closely watched by market participants as a barometer of short-term funding conditions and expectations for Federal Reserve policy.

The 4-week bill auction is a key reference point for money market funds, corporate treasurers, and institutional investors managing cash, and the latest result indicates relatively stable short-term borrowing costs for the U.S. government compared with the prior auction.