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Short Term Market Momentum Wanes at Trader’s Narrative

Short Term Market Momentum Wanes

We looked at momentum earlier in the month through the advance decline numbers. Using historical data, we saw that such intense thrusts usually continue far longer than most anticipate. Since then the S&P 500 is little changed. But the McClellan Summation Index continued to go up, even as the market’s rally was put on pause.

It reached 1393 (see below for chart) higher than it had been since January 2004. The McClellan Summation Index, is a long term measure of market breadth and right now it is saying that - at least in the short term - the stock market’s momentum has waned.
NYSE summation index long term chart Aug 2009

Here is the McClellan Summation Index for the Nasdaq:
Nasdaq summation index long term chart Aug 2009

The most recent readings from this measure of the market’s internal health are noteworthy because it rarely reaches these extreme levels. Here’s a chart of the S&P 500 index showing the instances in the past 10 years when both the Nasdaq and NYSE McClellan Summation Index went to an extreme high:
S&P 500 and McClellan Summation highs

While historically such extreme levels of momentum from the McClellan Summation indicator are followed by sideways trading or retracement, they do not normally hinder more long term moves. This dovetails with the sentiment data which we reviewed last week.

I’m expecting the market to soften a bit and even give back a significant portion of the spring rally. But rather than detract from the ‘bottom’ thesis, this could help the bulls in the long term. One possibility is that we could settle into a nice wide trading range where peaks and valleys offer trading opportunities. Or perhaps by shaking off the weak hands that have become way too giddy, a correction would increase the longevity of this rally.

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One Response to “Short Term Market Momentum Wanes”  

  1. 1 PEJ

    Wait&See :-)

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