This quote (and graph) from Forbes says it all:
“Here is the most important factual find about the stock market I’ve learned for some many years: More than 100% of equity market gains since January 2009 have taken place during the weeks the Fed purchased Treasury bonds and mortgages [that’s how they ‘print’ money].
And conversely, during the weeks when the Fed did NOT buy Treasuries or mortgage backed bonds, the stock market declined.”
