The Federal Reserve announced last month that they would start to reduce their $4.5 trillion balance sheet in October, thereby starting the process we call Quantitative Tightening (QT). As expected, they are aiming to do it gently and quietly, by not reinvesting bonds as they mature, starting with sums of around $6 billion of Treasuries and $4 billion in Mortgage-Backed Securities (MBS). The scale of non-reinvestment will gradually increase. Once in full swing, the Fed’s balance sheet could reduce by up to $150 billion each quarter.