The SP500 closed at 1940.51, up 72.90 or 3.90%. The 1972.56 continues to be the near term potential resistance, and the October 15, 2014 close is the potential support.
SPX
(click on the chart to enlarge)

The SPY finished the session at 194.46, a gain of 7.19 or 3.84%. The potential resistance and support remain the same, 197.91 and 181.92 respectively.
SPY

The Nasdaq 100 closed with a gain of 203.28 or 5.06% at 4219.60. The potential resistance and support remain to be 4278.14 and 3765.28 respectively.
NDX

The Russell 2000 closed at 1132.09 with a gain of 28.09 or 2.54%. The 2/2/15 close at 1175.51 is the potential resistance and the potential support remains to be at 1049.30.
RUT

After six consecutive down days along with huge losses, the market was due for a bounce. Whether today’s bounce is the beginning of a reversal process or simply an oversold rally remain to be determined. Monday August 24, 2015 extreme breadth level appeared to be the internal bottom for this pullback. Yesterday’s corrective closing low accompanied by improved breadth is a sign that the worst might have past. A retest of the recent intraday low is still possible, even a lower low could materialize. Until the market has reclaimed some previous support turned resistance levels, one should continue to be cautious and remain patient.