Nasdaq 100 is in the process of executing a massive rollover TOP from NDX 7700. It is already down over down 1000 points since 10/1/18, and shows no sign of abating. It is only going to get worse,unless reversed,as MOMENTUM has be set loose to the Downside.
I would only advise that you should get out of it's way, because the Bearish Pattern Construction is VALID on the Chart.
The selling going on right now IS large institutional LIQUIDATION Accompanied by huge volume to the downside. The most bearish confirming evidence,.. you would need to know.