This article studies the mid-September 2019 stress in U.S. money markets: On September 16 and 17, unsecured and secured funding rates spiked, and on September 17, the effective federal funds rate broke the ceiling of the Federal Open Market Committee (FOMC) target range. We highlight two factors...

In this article, the authors discuss the run on prime money market funds (MMFs) that occurred in March 2020, at the onset of the COVID-19 pandemic, and describe the Money Market Mutual Fund Liquidity Facility (MMLF), which the Federal Reserve established in response to it. They show that the...