U.S. 6-Month Bill Auction Yield Edges Up to 4.200%, Marking Modest Rise in Short-Term Funding Costs

The latest U.S. 6-month Treasury bill auction showed a slight uptick in short-term borrowing costs, with the yield coming in at 4.200% on 13 October 2026. This marks a modest increase from the previous auction’s result of 4.165%.

The move suggests a marginally higher return for investors parking cash in short-dated U.S. government debt, while also signaling a small rise in funding costs for the U.S. Treasury at the half-year maturity point. Although the change is incremental, such shifts in bill auction yields are closely watched as a real-time gauge of demand for safe assets and evolving expectations around the near-term interest rate environment.