Yes, it is always sunny on Wall Street. Particularly when The Federal Reserve is running interference like the have since 2007.
The Federal Reserve has reversed course on its unwind of their balance sheet. Allegedly temporarily.
While The Fed kept rates at 25 basis points for a long time (since 2007), they finally started raising them under Fed Chair Jerome Powell. And had started lowering them again before an apparent halt.
Yes, the year-end repo skitter led The Fed to inject > $200 billion of temporary funding for the banks.
Jerome Powell leading the discussion of Fed policy.