The chart below compares U.S. household wealth (blue line) to the underlying economy or GDP (orange line). In sustainable, organic wealth booms, household wealth tracks GDP very closely. Starting in the late-1990s, however, household wealth decoupled from the GDP as the tech stock bubble helped to inflate American portfolios until it came crashing down in the early-2000s. In the mid-2000s, the U.S. housing bubble boosted household wealth until the 2008 housing crash. Now, here we are in 2018, and the gap between household wealth and the underlying economy has never been larger. This unprecedented gap means that the coming reversion or bust is going to be even worse than the last two, unfortunately.