4570 is First Level Support. A RTH close below 4613, the low of yesterday’s Buying Day, would be a first indication of weakness.
Sentiment: my version of the Rydex Assets Ratio was higher at 34.64. Last week’s extreme at 48.48, was the highest ratio ever. This is a contrarian indicator. The next technical indication of weakness (which may come from a higher level) will probably lead to a larger decline than the market will be expecting.