美国财政部拍卖六周期国债，得标利率4.340%（6月24日报4.420%），投标倍数2.97（前次为3.11）。

Core Points - The U.S. Treasury auctioned six-month Treasury bills with a winning yield of 4.340%, down from 4.420% reported on June 24 [1] - The bid-to-cover ratio was 2.97, compared to the previous ratio of 3.11, indicating a decrease in demand [1]