周三（7月30日），美联储隔夜逆回购协议（RRP）使用规模为1554.81亿美元，上个交易日报1710.18亿美元。

Core Viewpoint - The usage of the Federal Reserve's overnight reverse repurchase agreement (RRP) decreased to $155.48 billion on July 30, down from $171.02 billion in the previous trading day [1] Summary by Relevant Categories - Federal Reserve Operations - The overnight RRP usage was reported at $155.48 billion on July 30 [1] - The previous trading day's RRP usage was $171.02 billion, indicating a decline in usage [1]