13:33 ET S&P 500 holding 50-day simple moving average : -- Technical -- Index demonstrating relative strength versus the major indices, currently maintaining a posture above its 50-day simple moving average at 910. If 910 should fail as support, look for a subsequent floor at its 20-day exponential moving average of 905. To the upside, watch for initial resistance in the range of 921 to 923.