周三（5月7日）纽约尾盘，美国10年期基准国债收益率跌2.52个基点，报4.2694%，北京时间16:18刷新日高至4.3335%，随后震荡下行，02:00美联储宣布按兵不动之后、02:30美联储主席鲍威尔新闻发布会开始之前跌至4.2577%刷新日低。两年期美债收益率跌0.62个基点，报3.7765%，日内交投于3.8241%-3.7538%区间，FOMC利率决议声明发布前后迅形成V形反转。

Group 1 - The U.S. 10-year benchmark Treasury yield fell by 2.52 basis points to 4.2694% on Wednesday, May 7, after reaching a daily high of 4.3335% [1] - The yield dropped to a daily low of 4.2577% before the Federal Reserve's announcement to maintain current policy and prior to Chairman Powell's press conference [1] - The 2-year Treasury yield decreased by 0.62 basis points to 3.7765%, trading within a range of 3.8241% to 3.7538% before and after the FOMC rate decision [1]