The S&P 500 Chart with elements of technical analysis:
Selling/Buying Volume Oscillator, Advance/Decline Oscillator, MarketVolume Oscillator,
MACD, RSI, Stochastics, McClellan Oscillator, Average True Range in Percents.

In technical analysis it is common to take a look at the history, and from the history you may see that in majority cases sideway trading at new high level ends with a correctional move down. As a rule during this sideway trading you may see strong bearish signals. If you take a look at the chart (S&P 500 chart above) you would see that on Thursday, November 12, 2009 all technical indicators (except volatility indicators) have generated strongly bearish signals. Yet, on the next trading day (Friday, November 13, 2009) the indexes bounced up from their lower level of the sideway corridor (see the same chart above).

Last week I mentioned: "At that time (in September and October) the indexes have been moving sideways for several trading days … we may see some sideway action at this level again ... If the market starts to move sideways the odds are high that the technical indicators will become bearish." That is what we saw on charts: sideway move and bearish signals on Thursday. However, in the same post I have brought some reasons why I would not consider these bearish indications as strong signals, and why I would rather consider waiting. There were two main reasons why I would avoid trading short at that moment: a) no high volume during the up-move and b) no increase in volatility.

Absence, of high volume during up-move indicates that this up-move was not strong enough to generate greedy buying when investors start to rush into the stock market with the hope to jump into "the last wagon of the running train" - as a rule such action leads to a misbalanced in the supply/demands and at least to the short-term correction down.