美国的银行体系准备金九周来首次上升，突破3万亿美元。该指标为美联储决定继续缩减资产负债表时的重要考量因素。

　　根据美联储周四公布的数据，截至10月8日当周，银行准备金上升约540亿美元，达到3.034万亿美元。

　　在此之前，准备金已连续八周下降，这是自2020年7月以来的最长持续下滑。

　　此前准备金下降之际，美国财政部在7月债务上限上调后，加大了发债力度，以重建现金余额。这抽走了美联储账上其他负债的流动性，例如央行隔夜逆回购（RRP）协议工具和银行准备金。

　　但随着所谓的RRP几乎耗尽，存放在美联储的商业银行准备金此前一直在下降。

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