欧美主权债收益率纷纷回吐涨幅，穆迪对美国降级的影响“昙花一现”

Group 1 - The yield on the 10-year U.S. Treasury bond has retreated to around 4.5%, with an intraday increase narrowing to less than 2.4 basis points, having previously risen to 4.5624% [1] - The 30-year U.S. Treasury bond yield has fallen below 4.98%, after reaching a daily high of 5.0353% [1] - The 2-year U.S. Treasury bond yield has decreased by approximately 2.0 basis points, settling around 3.98%, after peaking at 4.0378% [1] Group 2 - The yield spread between the 2-year and 10-year U.S. Treasury bonds remains around 4.2 basis points, currently trading below +52 basis points, having previously risen to +54.065 basis points [1] - Moody's downgraded the U.S. credit rating last Friday, which led to a sustained upward fluctuation in the 10-year U.S. Treasury bond yield on Monday [1] Group 3 - The yield on the 10-year German government bond has decreased by about 1 basis point, reaching a daily low of around 2.58%, after rising to 2.654% [1] - The 30-year German bond yield remains stable at 3.04% despite a narrowing price decline [1] - The yield on the 10-year UK government bond has narrowed its increase to 0.8 basis points, hitting a daily low of 4.657%, after previously rising to 4.726% and then giving back some gains [1]