S&P 500 (SPY) Look for resistance at 266.75-267. Key support at 263.
Russell 2000 (IWM) 156 is big resistance. Look for support at Friday low and 152.
Dow (DIA) Levels to focus on are 246.50, and then support at 241.40 and235
Nasdaq (QQQ) The 50-DMA is 164. Initial support at 161 then 160 and 159.25. Then 153 is the big low level.