September 2019 events in the U.S. repo market
On September 17, 2019, interest rates on overnight repurchase agreements (or "repos"), which are short-term loans between financial institutions, experienced a sudden and unexpected spike. A measure of the interest rate on overnight repos in the United States, the Secured Overnight Financing Rate (SOFR), increased from 2.43 percent on September 16 to 5.25 percent on September 17. During the trading day, interest rates reached as high as 10 percent. The activity also affected the interest rates on unsecured loans between financial institutions, and the Effective Federal Funds Rate (EFFR), which serves as a measure for such interest rates, moved above its target range determined by the Federal Reserve.
The SOFR and the EFFR (and its target range) between July 2014 and October 2019, showing a jump in mid-September 2019.
