昨日SOFR涨穿4.5%，受累于月末资金紧张

Group 1 - The secured overnight financing rate (SOFR) increased to 4.41% on April 30, up from 4.36% the previous day, indicating tightening liquidity in the market [1] - The banking sector is withdrawing funds from the repurchase market to balance their balance sheets, contributing to the tightening of funds in the SOFR market, which caused the SOFR rate to exceed 4.5% during the afternoon session in New York [1] - The effective federal funds rate remained unchanged at 4.33% on the same day, consistent with the previous day's rate [1]