S&P 500 (SPY) A weekly close under 320 will not look healthy. So that is the area to hold.
Russell 2000 (IWM) Support between 163.67-164.07 to hold
Dow (DIA) 283.93 is the 50-DMA
Nasdaq (QQQ) A weekly close under 212.24 will not look healthy. So that is the area to hold.