FX.co ★ Yield on U.S. 4-Week Bill Eases Slightly as Short-Term Rates Edge Lower

The yield on the United States 4-week Treasury bill slipped marginally in the latest auction, signaling a slight easing in very short-term borrowing costs. According to data updated on 18 June 2026, the 4-week bill stopped at 3.580%, down from the previous stop-out yield of 3.595%.

While the move is modest, the decline suggests a minor softening in investor demand for higher compensation on ultra-short U.S. government debt, or a shift in expectations around near-term interest rate policy. The 4-week bill is closely watched by money markets, liquidity managers, and institutional investors as a barometer of short-term funding conditions and immediate-rate expectations.

This adjustment keeps the 4-week yield firmly in the mid-3% range, indicating that, despite the small downtick, markets continue to price in a relatively stable short-term rate environment for U.S. government securities.