Holding my qqq short until tomorrow, or if it tanks afterhours. I have been through 5 bear markets: 3 short ones (1097,1990, 1998) and the two long recent ones. Volatility increases as time goes on. Normal. Short term traders, like me, can make a lot more money by covering shorts when extreme oversold like now, and then getting back in on rallies.
Trin and tick saying buy today or early tomorrow. They can be wrong, but usually are good signals.