美国财政部拍卖四周期国债，得标利率4.170%（5月29日报4.215%），投标倍数3.26（前次为2.92）。拍卖八周期国债，得标利率4.225%（5月29日报4.225%），投标倍数3.38（前次为3.07）。

Core Insights - The U.S. Treasury conducted auctions for both four-week and eight-week Treasury bills, with notable results in bid rates and bid-to-cover ratios [1] Group 1: Four-Week Treasury Bill Auction - The awarded yield for the four-week Treasury bill was 4.170%, a decrease from the previous auction's yield of 4.215% [1] - The bid-to-cover ratio for the four-week bill was 3.26, an increase from the prior ratio of 2.92, indicating stronger demand [1] Group 2: Eight-Week Treasury Bill Auction - The awarded yield for the eight-week Treasury bill remained stable at 4.225%, unchanged from the previous auction [1] - The bid-to-cover ratio for the eight-week bill was 3.38, up from the previous ratio of 3.07, reflecting increased investor interest [1]