The US 10-year Treasury yield hit a 24-year high of about 5.37% on October 8, pushing UK and French yields to multi-decade peaks and tightening financial conditions across Europe.

The US 10-year Treasury yield climbed to roughly 5.37% intraday on October 8, the highest level in 24 years, with spillovers immediately visible across European bond markets. The UK 10-year gilt yield rose to 5.527%, its highest since 2007, while the French 10-year yield reached 4.961%, briefly touching a near-24-year high.

Analysts at the European Stability Mechanism estimate that a $25 billion upside surprise in net US Treasury supply can push the German 10-year yield up by 10–15bp for about 10 trading days, and because Bunds are the euro area's pricing benchmark, the effect propagates to other sovereign issuers. A stronger dollar—up about 5% against the euro this year—also raises Europe's dollar-denominated energy import bill, feeding inflation.