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2026.08.2715:30:00UTC+00U.S. 4-Week T-Bill Yield Edges Up to 3.650%, Marking Slight Rise in Short-Term Funding Costs

The yield on the U.S. 4-week Treasury bill inched higher to 3.650%, up from the previous level of 3.640%, according to data updated on 27 August 2026. The move reflects a marginal increase in short-term borrowing costs for the U.S. government.

While the change of 0.010 percentage points is modest, shifts in the 4-week bill yield are closely watched as they influence short-term funding rates across markets. The 4-week bill is a key benchmark for cash management and short-duration investment strategies, often serving as a barometer for near-term liquidity and rate expectations in the U.S. financial system.

The slight uptick suggests that investors continue to demand only a marginally higher return for holding ultra-short-term U.S. debt, signaling continued confidence in the very near-term outlook for U.S. credit and market stability.

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