S&P 500 (SPY) 284.50 turned out perfect resistance. Now, with minor support at 280, we will look to see if 277 or where the MAs sit, holds up.
Russell 2000 (IWM) The 3/25 low was 148.41. Significant? Only if it holds. 152.50 good resistance
Dow (DIA) 253.40 is the 50-week MA. If that fails, besides IWM, it will be the second but not the last index to break that level. Resistance at 257.00 held
Nasdaq (QQQ) If this cannot get back over 179.85 (it could not), then 174.40-174.60 is the test of the underlying MAs.