周五（9月19日），美联储隔夜逆回购协议（RRP）使用规模为113.63亿美元，至少创2021年4月份以来最低，上个交易日报13

Core Point - The usage of the Federal Reserve's overnight reverse repurchase agreement (RRP) reached $11.363 billion on September 19, marking the lowest level since April 2021, down from $13.707 billion in the previous trading day [1] Group 1 - The current RRP usage indicates a significant decrease in liquidity demand in the market [1] - The drop in RRP usage may reflect changing investor sentiment or adjustments in cash management strategies [1]