The S&P 500 closed lower by 13.85 points, or 1.01 percent, at 1362.66.
The Nasdaq 100 fell 37.76 points, or 1.42 percent, to 2618.04 after shares of heavily weighted Apple shed 1.63 percent.
The Russell 2000 declined by 10.63 points, or 1.33 percent, to settle at 791.54.
S&P 500
Resistance is now 1363.70, followed by 1365, 1367.36, and 1372.Nasdaq 100
Support is now 1362.19 (Friday's low), followed by 1361, 1355, and 1351.22.
Resistance is now 2621.53, followed by 2628.43, 2631.94, and 2648.Russell 2000
Support is now 2618, followed by 2614.6, 2610, and 2604.30.
Resistance is now 792, followed by 792.91, 793.10, and 795.
Support is now 791, followed by 789.01, 788, and 785.
