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US 30-year bond yields reach highest borrowing costs since 2001 as debt and inflation fears mount

8/14/2026

A generational threshold has been crossed at the long end of the US Treasury curve.

The United States government sold 30-year bonds at the highest borrowing costs recorded since 2001, a result shaped by deepening concern over the trajectory of public debt and an inflation rate that has stayed persistently high.

What pushed yields to a two-decade extreme Bond markets move for named reasons, and this auction had two.

Mounting anxiety over the scale of United States public debt has gathered weight in rate markets, and inflation that has refused to retreat has kept investors cautious about locking in long-duration returns at lower yields.