The S&P 500 closed the day lower by 1.64 points, or 0.12 percent, to 1404.94. The SPX breached the 1400 level and traded as low as 1396.56 before recovering.
The Nasdaq 100 was off just 0.21 points, or 0.01 percent, to finish at 2772.03. The index hit a low of 2744.29 in the morning but was pushed higher by Apple, which gained nearly 1.5 percent on expectations for its iPhone 5 launch on Sept. 12.
The Russell 2000 outperformed the large-cap peers by more than a percentage point and was the only one of the three indexes to end the day in the green. The RUT rose 10.05 points, or 1.24 percent, to close at 822.14.
S&P 500
Resistance is now 1405, followed by 1407.50, 1409.85, and 1415.Nasdaq 100
Support is now 1403.20, followed by 1400, 1396.56 (yesterday's low), and 1395.
Resistance is now 2773, followed by 2780.07, 2785.27, and 2793.Russell 2000
Support is now 2770, followed by 2766, 2754.67, and 2744.29 (yesterday's low).
Resistance is now 823.77 (yesterday's high), followed by 825, 826.03, and 828.26.
Support is now 821.78, followed by 820, 815, and 813.22.
