Theoretical support/resistance (S/R) level
In the
preceding article we identified the theoretical support/resistance (S/R) level
with the volume-weighted average price at the
which the stock or commodity had changed hands during an
as-yet-unspecified interval of time. In the same spirit of logical development, we now motivate the choice for
this interval.
Consider
the familiar case of a stock which has been dormant for a long period of time,
trading in a narrow price band on relatively
low volume. On a certain day it suddenly breaks out of the trading range on
heavy volume and we ask where we might
expect to find support during the inevitable pullback which follows when
the buying spurt subsides. We have already said that the theoretical support will involve an
averaging process from some initial instant (called the "launch
point") to the present.
If the
launch point includes days prior to the sudden breakout, the averaging will mix
time periods of differing underlying
psychology and thus would not be expected to yield useful results. For,
clearly, the breakout day marked the beginning of a shift in the psychology of those subsequently
acquiring the stock. In other words by and large people were buying the stock
for different reasons after the
breakout than before. Similarly we can consider another familiar situtation
where a stock has been in a long period
of consolidation after an earlier bull move. Again, volume has shrunk to a mere
shadow of previous levels.
Then, one
day, the stock starts moving up and trading volume accelerates. Here again the
trend reversal is indicative of a reversal
in underlyling psychology - else why would there have been a change in
trend? Thus it is clear that if the average price is to be a meaningful measure of psychological
boundary, the average must be taken over a period of homogeneous psychology,
i.e. subsequent to a reversal of trend.
This is the key to the Midas method. By one of those unfortunate detours in the
progress of technical analysis,
attention came to be focussed on moving averages, i.e. price averages taken
over a fixed time interval from the
present to the past, an interval which had no connection to the
underlying psychology of the market participants (except perhaps for a 6-month capital gains holding
period). Our "message" is
that instead of "moving" averages, one should take fixed or "anchored" averages, where the
anchoring point is the point of trend reversal.
By way of
example, consider the Midas chart (obv omitted to focus on price alone) for
Cypress Semiconductor. Here we have a
five-fold hierarchy of theoretical support levels, where every member of
the hierarchy is launched precisely from a trend reversal point. Thus an otherwise bewilderingly
complex set of zig-zags in the price history can be understood with respect to
a single algorithmic prescription:
support will be found at the volume-weighted average price taken over an
interval subsequent to a reversal in trend.
"Is
this always the case?", one should now ask. In Count Dracula's immortal
words when his hapless ovenight guests wished to leave: "Ahh, if only life were so simple!" Have a look
at the Midas chart for Cycare Systems. Here we could achieve a good
"fit" to the observed price
zig-zags only by adjusting the launch points somewhat from their a priori
values. In the case of S2, is was a
matter of determining where in the midst of an extended consolidation
bottom the launch point should taken. With S3 and S4, it involved a displacement of a day or two
after the actual reversal day (a common situation in strongly trending stocks).
(S5 could be viewed actually as an S6 -
launched from the first pullback to an S5 which is not shown.)
In all
cases, we attempt to understand the actual price zig-zags within a framework of
the minimum number of theoretical S/R's.
The launch points for this minimal S/R hierarchy are in the final
analysis empirically determined. However, in most cases, the initial guess of launching the S/R's from
the trend reversal points is good enough.
Having
thus developed the rationale for the Midas method of technical analysis, we
will henceforth get down to the computational
nitty gritty. After the next article (if not by now) you should be
generating your own Midas charts and forming your own conclusions!
Category: Methods of technical analysis
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