Behind the sustained rise in long-dated yields is growing concern about a deteriorating US fiscal picture amid a deluge of issuance to fund AI infrastructure.

The US 30-year Treasury yield has stayed above 5% for the longest stretch since 2007, reshaping risk asset dynamics and raising debt

US 30-year Treasury yields surpass 5% for a record 27 days in 2026, highlighting intensified inflation and geopolitical pressures.