美国至4月21日6个月国债竞拍-得标利率配置百分比 30.34%，前值96.78%。

Core Insights - The auction yield for the 6-month U.S. Treasury bill as of April 21 was 30.34%, a significant decrease from the previous value of 96.78% [1] Summary by Category - Auction Results - The winning bid rate for the 6-month Treasury bill auction was reported at 30.34% [1] - This represents a notable decline from the prior auction rate of 96.78% [1]