日本40年期国债收益率下降8个基点至3.4%。

Core Point - The yield on Japan's 40-year government bonds has decreased by 8 basis points to 3.4% [1] Group 1 - The decline in the yield indicates a potential shift in investor sentiment towards long-term government bonds [1] - The current yield level may reflect broader economic conditions and monetary policy expectations in Japan [1]