Let's look at the
possibilities and
limitations of a policy of
entering the market
when it is depressed and
selling out in the
advanced stages of a boom.
This bright idea
appeared feasible from a first inspection of the market chart covering the gyrations of the past fifty years.
But
closer study indicated that
no simple and fool-proof formula could be counted upon to work out in the future.
For example, the history of the Dow-Jones Industrial Average suggests that it should be possible to buy at 140 during the next few years and sell out at 280 later.
But this is
only an indication and
not a true prediction.
Nor can we tell whether the
probability of its working out is
good enough to justify the basing of an investment policy upon it.
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The
various formula timing plans, which have come into prominence in recent years, all represent a
compromise attempt to deal with this probability.
Instead of planning to do
all the buying at 140 - or some similar price - and
all the selling at 280, the formula user
buys at various stages on the downside and
sells in installments on the upside.
By this means he can obtain
some benefit from
market fluctuations, even if they do not fall precisely within the range suggested by the chart.
Thus his formula assures him at least
some profit if the future performance of the market is
only reasonably close to that of the past.
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A simple application of this idea would be to sell
10 percent of your holdings when the market
advances 10 per cent above a
chosen base or central level; then to sell
20 per cent of the remainder when it advances another 10 per cent and so on.
Repurchases would be made after the market had declined to the central level, and on
some similar schedule.
Following this plan, you would have
sold all your stocks if and when the market level
reached double the base figure, and you would then have
realized a profit of 37 per cent above the base.
You can apply these
ins and outs of formula timing plans, using
various types of plans, to calculate their possible results, using the record of your own actual operations and also applied to hypothetical or imaginary funds.
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There is
some danger here for both writers and investors to
lose themselves in a maze of alternative procedures.
It is well to bear certain basic facts in mind.
No one plan has a priori or guaranteed advantage over any other.
The
relative results of various plans will depend on
how well each happens to fit the market fluctuations of the future.
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1. The
more certain the investor is that the
range of future fluctuations will duplicate the past, the more
justified he is in
concentrating his
buying close to the bottom line of the Dow-Jones performance chart and his
selling not much below the top line.
2. But since we
lack any proof that the
past range must determine that of the future, most of us will
prefer a
compromise formula by which
buying and selling is done in various stages below and above the indicated median level.
3. So too, there is
no assured advantage as between a plan to
sell 100 per cent of our stock holdings by the time a
designated high point is reached and a plan that assures
retention of some stocks under all circumstances. The latter
in some measure protects against an
inflationary breakout of a permanent character into a much higher band of fluctuation than we have experienced hitherto.
But like all the other choices in formula timing plans
the wisdom of this one
depends not on reasoning but on results.
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The
sovereign virtue of
all formula plans lies in the compulsion they bring upon the investor to
sell when the crowd is buying and to buy when the crowd lacks confidence.
If the reader adopts a formula plan today and it happens to turn out badly - because the market chances to soar upwards to unexpected heights and does not return - it will still prove to
have been worth while.
For the principle and the psychology will
remain sound and applicable to the markets of the future, however far removed their middle range may be from the line of the past.
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Since all the rest is a matter of detail or of guesswork, we strongly advice to "formula investors" that they
select a plan that is simple and convenient in their circumstance.
Benjamin Graham
Intelligent Investor