7月31日电，美联储周三隔夜逆回购协议（RRP）使用规模为1554.81亿美元。

Core Insights - The Federal Reserve's overnight reverse repurchase agreement (RRP) usage was $155.48 billion, a decrease from the previous trading day's $171.02 billion [1] Summary by Category - Federal Reserve Activity - The RRP usage indicates a significant liquidity management tool employed by the Federal Reserve to control short-term interest rates [1] - The drop in RRP usage from the previous day suggests a potential shift in market liquidity conditions [1]