Which Way Will the Market Go?

The recent rally has taken a pause at best, and perhaps the recent rally has run its course. While the market has declined for the past two days, today's decline was much larger than Monday, as the S&P fell by almost 20 points back to 815.6. How can we gauge whether this is the end of a rally or merely a pause in an uptrend?

Technical indicators are helpful for this. The following chart (click to enlarge) is the daily S&P performance over the past six months. There are two conflicting signals in this chart. First, note the performance of the RSI. While the S&P has recently risen sharply, that momentum was not confirmed by the RSI (see the lines in the chart). Recall, this is a bearish divergence. But if we work with moving averages, we get a buy signal. In the chart I have added the 20-day and 50-day moving averages. Notice that in the past few days, the 20-day has crossed above the 50-day moving average. This could potentially be considered a buy signal (recall: this is related to the average-marginal relationship we discussed earlier in the semester).

So, which indicator should we rely on? Since moving averages are lagging indicators and a bearish divergence of the RSI is a leading indicator, I would tend to go with the RSI's "signal." But that is still no guarantee that the rally is over -- it merely indicates a short-term pullback is in store which we are now witnessing.

In a situation such as this, you should look at weekly data for whatever information it contains, since weekly data does not contain as much "noise" as does daily price data. The chart below shows weekly S&P data (click to enlarge). I have added the 13-week moving average since this corresponds to a quarter. Note how well this fits the price data.

The weekly RSI shows very different momentum information than does the daily chart. Note the weekly RSI is far from overbought, and there is no bearish divergence. Actually, the RSI has failed for some time to move beyond 50, which would have indicated movement to more bull-market-type momentum.

In this situation, I recommend that you view an RSI value of 50 as resistance for the S&P's price movement. So, based on the weekly RSI, this rally failed at (RSI) resistance. I would only place bets on upward continuation when (and if) the RSI is able to sustain a break above 50. Were this to happen, daily data would clearly have to show an end to the recent pullback.