What is quantitative easing, and should we be concerned?

Global ratings agency, Fitch estimates that the value of Quantitative Easing (QE) implemented this year could reach $9 trillion! To put that in context, that is equal to more than half the cumulative total global QE that occurred between 2009 and 2018! The Federal Reserve in the US has alone pumped $4 trillion into the market over the past 11 weeks. This is absolutely unprecedented. Should investors be worried about the long-term impact of all this money printing (QE)? What are the risks that...