Last tests have stalled falls.
The S&P is trading near the lows for the day at 2593.06. That is within about 5 points of the key 200 day MA.
Recall, that in February, the price tested that MA, found buyers. On Friday, the index closed right near the line. Monday gapped higher, and traders breathed a sigh of relief.
Today we have made new week lows and with 5 more hours and the market anxious, that MA line may still be tested more closely.
As I type,we are seeing a bounce. The price is back over 2604, but keep that level in mind on further weakness today.