Why the U.S. Repo Market Blew Up and How to Fix It

To keep markets running smoothly at the end of 2019, the U.S. Federal Reserve pumped half a trillion dollars into an obscure but crucial part of the global financial system that suffered a seizure several months ago. But what will it take to keep that funding market, known as repo, out of news headlines in 2020? Remedies from looser bank regulation to a permanent backstop at the Fed are being debated, even as views differ over what caused the ruckus in the first place.