据美国纽约联储数据，上个交易日（5月20日）担保隔夜融资利率（SOFR）报4.27%，之前一天报4.29%。资金流入持续拖累隔夜回购利率。上个交易日有效的联邦基金利率报4.33%，之前一天报4.33%。

Group 1 - The secured overnight financing rate (SOFR) was reported at 4.27% on May 20, down from 4.29% the previous day [1] - The effective federal funds rate remained unchanged at 4.33% on the same day [1] - Continuous inflow of funds is putting pressure on the overnight repurchase agreement rates [1]