Schaeffer On Charts: Keeping It Simple

Examining the 14-day RSI and the 80-day moving average on the SPX

by Bernie Schaeffer 9/28/2009 9:00 AM


While most of us technical types love to dive into a wide swath of indicators in our attempts to divine market direction, keeping it very simple in your technical analysis can often yield huge benefits. Perhaps the most important of the benefits of simplicity is it can allow you to maintain a much higher level of objectivity, as you can't add yet another indicator to the mix to tilt your conclusion in favor of your biases.

With this in mind, I just completed an analysis of the action in the S&P 500 Index (SPX) based on just two indicators: the 14-day relative strength index (RSI) -- an overbought/oversold indicator -- and the 80-day moving average (a trend-following indicator that I favor over the 50-day that's in most technicians' tool boxes). Here's what I conclude:

  1. 14-day RSI – The S&P reached its most overbought level on the accompanying chart (which goes back to October 2007) on Aug. 4, 2009, at 75 – also note that until July 2009 there were no overbought readings on the chart that reached 70. The S&P then rallied by another 5% or so, and reached another overbought peak on Sept. 17 (shy of the Aug. 4 peak) that could be viewed as a non-confirmation. The current reading of 54 is in no-man's land, but it could become interesting as a potential buying opportunity if it gets down to 40 again.
  2. 80-day moving average (green) – This has been a very significant trendline for the past 15 months, and most recently (early July), there was a successful test on a market pullback. The 80-day is about 6% below current levels at 976. We could be setting up in the next week or two for a test of the 80-day near the 1,000 mark, and given the very skeptical sentiment backdrop, I'd expect this round-number test to be successful and for it to represent a buying opportunity.

Based 100% on what I see from these two indicators, I would have a neutral short-term posture, with perhaps a modest bearish bias, but with the potential for a setup for a major buying opportunity on weakness. Longer-term investors should not disturb their bullish positions based on this analysis, as I see downside risk as relatively minor and a further correction as far from a sure thing.

 DAILY CHART OF SPX SINCE OCTOBER 2007 WITH 80-, 160-, AND 200-DAY MOVING AVERAGES

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