There is more than a Yield Curve inversion going on...
Notice how Nasdaq 100 Stocks (NDX-in blue) peaked when BOTH 3month Rates (IRX-in gold) and the 12 month moving average (red) of 10year Rates (TNX-in black) crossed over the 60month moving average (yellow) back in March 2000.
Here's the lead-in to the March 2000 crossover
...too see it better, here are rates alone: