Let's use the RS chart of IBM to illistrate the tenets of Market
Relative Strength. Notice how this chart is much slower than the trend chart of IBM. One screen goes back over a
decade and many of the marks designate months. If IBM were to trade in line with the market then there would be
no movement on the RS chart. For example if IBM were to rally 10% and the Market (SPXEWI) were to
also rally 10% there would be no change on the RS chart since there was no out performance by IBM.
You will recall that a RS chart has 4 statuses. We will use the IBM Relative
Strength chart to review those and how they are read. The first buy signal on the chart came in November 1996. A
relative strength buy signal is given when a column of X's exceeds a previous column of X's. This is the strongest
status since the RS chart is not only on a buy signal but also in a column of X's. A relative strength buy signal
for IBM would suggest to us that we could expect to see the stock outperform the market on a relative basis
for the next 18 to 24 months.
The relative strength chart of IBM remains on a buy signal until October 2000.
Now, the relative strength chart did not remain in a column of X's the entire time, there were pullbacks. But a
reversal down into O's on the relative strength chart while still on a buy signal suggests more a breather or pause
in the upward movement of the stock. These reversals serve to create an orderly pattern. During the time that IBM
was on a relative strength buy signal, the stock was up 166% while the S&P 500 Equal Weighted Index was up 54.4%.
The stock did in fact outperform the market as the relative strength chart would have suggested.
In October 2000, the relative strength picture for IBM changed. After four
years of positive performance, the relative strength sell signal (given when a column of O's exceeded a previous
column of O's) suggested the stock should now begin to underperform the market. The relative strength signal
in October 2000 is the weakest of the four status as the relative strength chart is not only a sell signal but also
in a column of O's.
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