Nasdaq Composite (cash index) has a different count than S&P and Russell-2000. Particularly it might have topped in wave ( iii ) up at 7,850.11 on 3/21/2019.

Off that top Nasdaq may be playing an expanded flat corrective structure where a corrective wave ( b ) up could make a nominal new higher high over the top of the wave ( iii ) up. Once that corrective wave ( b ) up tops out we myu get a strong impulsive looking drop in wave ( c ) of ( iv ) down.

And on the chart below you may see three high probability targets for that drop.