Chronological coverage updated 1st October 2026 19:55.
Update 1 · 1st October 2026
Global Bond Market Rout Pushes US and UK Borrowing Costs to Multi-Decade Highs
Surging yields across major economies
A sharp sell-off in global government debt intensified on Thursday as investors panicked over persistent inflation driven by elevated energy prices and swelling budget deficits. The rout hit sovereign bond markets across North America, Europe, and Asia, triggering substantial losses across international equity markets.
In the UK, the yield on 30-year gilts briefly breached 6.028%, hitting its highest point since 1998 before paring gains later in trading. The benchmark 10-year UK gilt yield climbed to 5.51%. Across the Atlantic, the US 10-year Treasury yield surged to 5.34%, marking its highest level since 2002, while European and Japanese bond yields also surged. Source: Bmmagazine, The Guardian.
Impact on equity markets and fiscal outlook
Equity investors mirrored the bond market anxiety, driving London's FTSE 100 down by nearly 1.7% in its sharpest daily drop since May. France's CAC 40 slid 1.6%, Germany's DAX lost 1%, and the pan-European Stoxx 600 index fell 0.53%.
Bmmagazine reportedly quoted Timothy Graf (head of macro strategy for Europe, the Middle East and Africa at State Street) as saying: “I don’t think there’s a specific trigger. Moves like today feel like positions have been stopped out. If you look at energy prices, they are contained.”.
UK government fiscal headroom was reduced by approximately £10 billion, down from £24 billion, due to rising bond yields since late February. — according to Bmmagazine.
Escalating borrowing costs add severe pressure on UK Chancellor John Healey as he prepares his first budget on 28 October. Official figures from the Office for Budget Responsibility noted that UK debt interest spending has more than doubled as a share of GDP since before the pandemic, reaching £110 billion for 2025-26.
- Soaring bond yields reflect deep investor concern over sticky inflation, expanding public deficits, and lingering energy market uncertainty.
- Surging UK debt servicing costs threaten to significantly constrain the Chancellor's budget flexibility ahead of October 28.
