7月3日电，日本40年期国债收益率上升4个基点至3.1%。

Core Viewpoint - Japan's 40-year government bond yield has increased by 4 basis points to 3.1% [1] Group 1 - The rise in the 40-year bond yield indicates a potential shift in investor sentiment towards long-term government debt [1] - The increase of 4 basis points reflects broader trends in the bond market and may influence future borrowing costs for the government [1]