The S&P 500 fell to its worst level in a week, trading as low as 1358.79 before finding solid footing around the 1360 level. It closed the session down 11.59 points, or 0.84 percent, at 1366.94.
The Nasdaq 100 declined 22.54 points, or 0.84 percent, to close at its lowest level in a month at 2653.50. Weakness in large-cap tech names weighed on the index as shares of Apple fell as much as $20 before recovering most its losses.
The Russell 2000 saw the worst of yesterday's losses. The small-cap index fell more than 1.5 percent, or 12.20 points, to 791.85.
S&P500
Resistance is now 1367, followed by 1370, 1375, and 1380.Nasdaq 100
Support is now 1358.79 (yesterday's low), followed by 1355 and 1350.
Resistance is now 2655, followed by 2660 and 2680.Russell 2000
Support is now 2650, followed by 2644, 2629.70 (yesterday's low), and 2625.
Resistance is now 792, followed by 795, 800, and 804.
Support is now 790, followed by 788.50 and 785.37 (yesterday's low).
