美国至7月31日4周国债竞拍-得标利率配置百分比 1.54%，前值10.47%。

Core Insights - The winning bid rate for U.S. Treasury auctions for the four weeks ending July 31 is reported at 1.54%, a significant decrease from the previous value of 10.47% [1] Group 1 - The current winning bid rate indicates a shift in investor sentiment towards U.S. Treasury securities, reflecting changes in market conditions [1] - The drastic drop in the winning bid rate suggests a potential increase in demand for government bonds, which may influence future interest rate policies [1] - The comparison of the current rate to the previous value highlights a notable volatility in the bond market, which could impact investment strategies [1]