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Global Government Bond Yields Surge to Multi‑Year Highs

An oil-driven inflation shock from the Iran conflict plus heavy sovereign and corporate borrowing have pushed long-term yields higher, which raises public borrowing costs and strains open-ended property funds.

Overview

  • Ten-year US Treasury yields climbed to about 5.34 percent on Thursday, the highest level since 2002, while German 10-year Bunds reached roughly 3.6–3.65 percent.
  • Markets blame an Iran-related oil shock that lifted inflation expectations and triggered broad selling of fixed-rate paper, a move that was amplified by large planned sovereign issuance and heavy corporate borrowing for AI and infrastructure.
  • Higher sovereign yields are raising borrowing costs for households and firms, with German mortgage rates climbing to around 4–4.55 percent and many borrowers facing materially higher monthly payments.
  • Open-ended German real-estate funds are under fresh pressure, with net outflows in 2026 and several funds suspending redemptions or entering liquidation while managers prepare liquidity tools to limit withdrawals.
  • The repricing forces investors to reassess allocations as high-quality bonds again compete with stocks for income, and policymakers must weigh fiscal strain from rising debt-servicing costs against limited central-bank options to cap spreads.