Nobody’s quite sure why the repo market is blowing up, but most people who know about it are quite concerned. From the Zman at theburningplatform.com:
There used to be a time when the mass media covered the Federal Reserve as if it was Hollywood or a professional sports league. Whenever the Fed acted or the Fed chairman made a statement, it was big news. That has not been the case for a long time, mostly due to the mortgage meltdown. Worshiping the money men was no longer good copy after they came close to blowing up the world. Halfway through the Trump tenure, the media barely mentions the Fed or Fed policy.
Still, the central banks remain the most important government institutions on earth and this is particularly true of the Federal Reserve. They control the global economy, because they control the supply of money and credit. This is why the massive intervention into the credit markets by the Federal Reserve recently should be front page news. Something very big is happening and no one seems to know why, but the Fed is responding to it with $500 billion in new money.