Some simple stuff here but worth pointing out: Look at the volume bars I have in the middle of the chart. The last 2 green up days were lower volume than the 3 down days previous.
Granted this is e-minis and not the cash index but its a good indicator since today's quad witching day brought out more SPX volume. So the e-minis may be a good sentiment indicator for the past few days. And its shows that there are (were) more sellers than buyers for the moment. That is bearish for the short term. And today was even less than yesterday. These last 2 days are textbook low volume patterns of a corrective move back up which signals that buyers aren't yet interested in buying at these prices.