S&P index tests the 100 hour MA

Holds just above the 100 hour MA.  Key barometer.
The S&P index trading at session lows and in the process is testing the 100 hour moving average currently at 2479.97. The low for the day just reached 2480.32. A move below that moving average could lead to further downside momentum with the 38.2% retracement of the move