US 30-year Treasury yield hits highest level since 2004 as bond selloff deepens and markets eye 6%

From the Newshound archive · first published 24 September 2026.

America's 30-year Treasury yield has climbed to its highest point since 2004 as a deepening bond selloff rattles global markets. Investors who were already rattled by 5% yields are now openly pricing in the prospect of 6%, a level that would pile pressure on borrowing costs worldwide. The sell-off marks the sharpest single-day surge in yields since 'liberation day' tariffs convulsed markets earlier this year.

The bond rout dragged US stocks lower on Wednesday amid renewed fears that inflation remains far from beaten.

Analysts warn that 5% yields, once treated as a shock threshold, have already lost their power to alarm investors — making 6% the new danger marker.

The turmoil comes as the UK Treasury is reported to be open to trimming its fiscal headroom to limit tax rises in the forthcoming Budget.