The goal of technical analysis
The goal
of technical analysis is to discern underlying patterns of orderliness in the
apparent random walk of prices and to use
such perceived structures as the basis for projections into the future
of past price behavior. The ever-present danger in this endeavor is one of self-delusion: seeing
patterns where none really exist and - worse yet - trying to use such patterns
to predict the unpredictable.
It was
therefore particularly gratifying that the search for a final example on which
to base our concluding remarks uncovered the
long-term MIDAS chart for AT&T shown in the figure. Representing
eleven years of data, virtually every feature of the MIDAS method detailed in the foregoing articles is
exemplified in this single chart.
First, one
can only marvel that the primary support level, S1, nearly precisely coincided
with seven points of trend reversal over
the six-year period 1984 - 1990. Similarly, the secondary support level,
S2, launched in December 1990 has precisely
accommodated at least a half- dozen trend reversals with negligible
porosity. The primary resistance level, R1, is similarly validated and - together with S2 - has the
price trapped in a classic "squeeze" pattern. The tertiary support S3
has functioned as a resistance level
after having been penetrated. Early in the chart, the foothill behavior is
quite evident and even TOPFINDER makes
its appearance in the near-doubling move from the mid-twenties to the
mid-forties! Finally, the fractal character of the S/R hierarchy is clearly demonstrated since this
eleven year MIDAS chart is indistinguishable in its morphology from the many
year-long charts we have seen in the various articles.
So it
seems clear that MIDAS is for real and has much to contribute to technical
analysis; self-delusion does not seem to be a
problem. Consider the richness of detail and the ease of interpretation
which MIDAS provides. A single glance at the chart shows immediately that AT&T is involved in a
silent combat between S2 and R1. Failure of S2, i.e. resolution of the squeeze
to the downside, means a retreat to S1
at about 37 (and a great buying opportunity at the first sign of a bounce
there). A convincing penetration of R1,
on the other hand, implies at least a retest of the previous high. By way of
comparison, some one looking at the
conventional price-volume bar chart for the past year shown in the
second figure would probably conclude that here is another example of random
walk behavior!
Thus, just
as we began this series of articles with a side by side comparison of a MIDAS
chart and a conventional bar chart, so
shall we conclude this informal monograph. Those who would integrate
these techniques into their trading discipline are advised to be ever mindful of the fact that the
market is in the final analysis inherently unpredictable. All MIDAS does is to
define more clearly the tracks along
which the market has been moving and - absent shocks and paradigm shifts - will
presumably continue to move. As
powerful as the MIDAS techniques appear to be, they will frequently be humbled
by the market's caprice. Just as King
Midas found to his grief, power always has its limitations, often from
the least expected quarter.
Finally,
this is a good opportunity to address two of the most frequently asked
questions in the correspondence provoked by these articles. First, "Does MIdas work for every stock?"
Midas works best when a stock is in a coherent trend. Some stocks at some times are not and are better described in terms
of a random walk. As an informal estimate based on years of experience, I
would guess that at any given time, a
useful S/R hierarchy can be identified for about two out of three stocks.
TOPFINDER examples are generally rare,
perhaps of the order of one instance in a year's worth of data for twenty
stocks.
It has
also often been asked "Why are you disclosing these techniques for free;
why not try and sell them in some form or other?" I have always felt that if MIDAS has any
practical value, ample rewards would come from the market itself (and they
have) far in excess of anything that
could be made from such commercialization of the method. So long as MIDAS is
not sufficiently widespread that it
becomes self defeating as everyone is recognizing the same trading
opportunities, there is no reason not to share
the insights with the technical analysis community. It is my hope that
the articles will stimulate research along these new lines and
that the
same spirit of openness will prevail in sharing the results.
Category: Methods of technical analysis
|