Ever since the Global Financial Crisis (GFC) there has been an obsession with looking for the next recession. In this regard, over the last year or so there has been increasing concern that a flattening yield curve in the US - ie the gap between long-term bond yields and short-term borrowing rates has been declining - is signalling a downturn and, if it goes negative, a recession in the US.
This concern naturally takes on added currency given that the current US bull market and economic expansion are approaching record territory in terms of duration and given the trade war threat...