S&P 500 (SPY) 258.62 is pivotal with a move below S1 and 256.19 signaling a move lower to 255 then 252.
Russell 2000 (IWM) 140 best underlying support and unless this can clear 145, we could see that number soon.
Dow (DIA) 235 pivotal support-244.60 is the 50-DMA
Nasdaq (QQQ) 160 nearest support with the 50 DMA at 162.50.