【美债收益率普跌】7月30日讯，美国30年期国债收益率跌10个基点，报4.86%；10年期美债收益率跌9个基点，报4.32%；2年期美债收益率跌5个基点，报3.88%。

Group 1 - The core viewpoint is that U.S. Treasury yields have declined across various maturities, indicating a potential shift in investor sentiment or market conditions [1] Group 2 - The 30-year Treasury yield decreased by 10 basis points to 4.86% [1] - The 10-year Treasury yield fell by 9 basis points to 4.32% [1] - The 2-year Treasury yield dropped by 5 basis points to 3.88% [1]