S&P500 retraced 61% of the fall and turned back again (a typical ABC correction). MA50 is acting as a strong resistance. Most of the earnings are out and there isn't enough substance to push it further up rapidly. I think market may not have typical C wave (1.6 times of wave A) but MA200 is something to monitor closely. Markets might continue to have higher daily volatility and move sideways for a few months.
We may need another 2 months time to have a fair estimate on dollar strength, bonds prices, Yuan oil futures, earnings of companies.
Disclaimer: This is just my opinion, not an advice. Trade at your own risk.