The S&P 500 jumped 13.83 points, or 0.96 percent, to close at 1447.15.
The Nasdaq 100 regained the 2800 level it had lost a day earlier. The NDX finished at 2821.60, a gain of 39.97 points, or 1.44 percent.
The Russell 2000 rose 9.61 points, or 1.15 percent, to 843.54.
S&P 500
Resistance is now 1448, followed by 1450.20 (yesterday's high), 1453.26, and 1457.29.Nasdaq 100
Support is now 1443.62, followed by 1440.35, 1435.44, and 1430.53 (Wednesday's low).
Resistance is now 2829.95, followed by 2836, 2842, and 2857.32.Russell 2000
Support is now 2817.36, followed by 2805.09, 2801.18, and 2795.50.
Resistance is now 844, followed by 845.01, 847.38, and 850.
Support is now 842, followed by 841.90, 837.90, and 835.

