This is a very interesting and important chart right about now. Let's take a closer look?and what we see is that this week's action (so far) represents a key upside reversal, which, if the S&P 500 sustains above 1456.70, will indicate a significant change in market direction (UP).

The fact that the recent decline plunged towards the August low (1370.60) but managed to hold at an equally important support coordinate along the 2003-07 support line suggests strongly to me that the longer-term dominant uptrend remains very much intact.

Having said that, however, I must also remind myself and caution you that this advance must climb to new highs above 1576.09 to keep the bull trend intact. A powerful rally that fails to hurdle 1576.09 will imbue the weekly chart structure with a very toppy look indeed.

For now, though, a powerful upside reversal is in progress that appears to have inaugurated the next upleg in the 2002-present bull leg.