Japan’s bond market saw further upward movement in ultra-long maturities, adding to pressure on the Bank of Japan amid multi-decade yield highs.
Japan’s 30-year bond yield rose 1.5 basis points to 3.395%, while the 40-year yield increased 3 basis points to 3.720% on December 10. These gains in ultra-long maturities follow recent rises in shorter-term yields, including the 10-year yield reaching 1.965% on December 8 — its highest since June 2007. The sustained yield increases across all maturities are intensifying market speculation that the Bank of Japan may review its ultra-loose monetary policy.