美国财政部拍卖四周期国债，得标利率4.000%（前次报4.060%），投标倍数3.06（前次为3.15）。拍卖八周期国债，得标利率4.390%（前次报4.470%），投标倍数3.24（前次为2.70）。

Group 1 - The U.S. Treasury auctioned four-week and eight-week Treasury bills with a winning yield of 4.000% and 4.390% respectively, indicating a decrease from previous yields of 4.060% and 4.470% [1] - The bid-to-cover ratio for the four-week bills was 3.06, slightly lower than the previous ratio of 3.15, while the eight-week bills saw an increase in the bid-to-cover ratio to 3.24 from 2.70 [1]