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Long‑End U.S. Treasury Yields Surge to 19‑Year High

Markets are repricing policy and long‑term borrowing costs because oil‑price driven inflation fears from the U.S.–Iran conflict have risen.

Overview

  • The 30‑year Treasury yield climbed above 5.19% on Tuesday, its highest level since 2007, while the 10‑year moved toward about 4.67%, and long‑duration bond ETFs fell to multi‑year lows.
  • Traders and strategists point to higher oil prices tied to the U.S.–Iran war and stronger April inflation data as the main drivers that lifted long‑term inflation expectations.
  • The move has already pushed up borrowing costs that set mortgage and corporate loan rates and reduced the market value of existing long‑dated bonds after a mid‑May 30‑year auction cleared above 5% with tepid demand.
  • Long‑end yields rose around the world, with 30‑year gilts, bunds and Japan’s long bonds also at multi‑year highs, signaling a broadly synchronized repricing of sovereign risk.
  • The shift has changed market pricing for the Federal Reserve toward fewer 2026 cuts and a greater chance of later hikes, and strategists warn yields could climb further, which would deepen pressure on mortgages, corporate refinancing and equities.