Japan's 40-Year Bond Yield Reaches 1.750%, Highest in Over a Decade

Japan's 40-year government bond yield rose 2 basis points to 1.750% on July 3, its highest in over a decade. A basis point is 0.01 percentage point. Concerns over Japan's debt path and persistent yen weakness drove long-end selling. The steepening trend since at least November 2025 suggests structural repricing, not a temporary blip.