"The Fed didn't really drain any liquidity yesterday. They moved the IOER up to .50%, moved the RRP rate up to .25%, and the RRP volume came in at $105 billion, only $3 billion more than the day before. Where was the draining? But interest rates moved up anyway to reflect the tightening, without any fundamental change. Basically, the Fed decreed a rate tightening and the market moved rates higher.... I wonder how many economic interest rate models include "by decree" as a factor?"