ChartFilter
Stock Screening Tips Issue #4
Screening with overbought and oversold indicators
by
Alex Martin
In
this month's newsletter we will be screening
with overbought and oversold indicators, including
the Williams %R, the CCI and the Fast Stochastic
(9,3). (See ChartFilter Newsletter #8 for
more information on these indicators.) Then
we will analyze a particular stock chart that
was found by our screen.
Overview:
An
overbought condition is considered to occur
when the number of issues (purchases) that
closed above the opening price is higher than
those that closed below the opening price.
An oversold condition is considered to occur
when the number of issues that closed below
the opening price is higher than those that
closed above the opening price.
Note:
When screening for these types of conditions
it is important to also look at the overall
trend of the security. See trendlines.
Technicals:
Step
1: Williams
%R : Hits 10% or 90%, BUY, within
last 10 days.
The
buy signals for the Williams %R occurs when
the indicator line crosses up through the
90% line. More cautious investors may also
wait for the %R to hit a lower level, such
as 95% or even 100%, before it crosses back
up through the 90% line.
Step
2: CCI :
crosses +/- 100, BUY, within last 10
days
Step
3: Fast Stochastics
- : 9,3 %D crosses 20/80%, BUY, within
last 10 days.
The
stochastics buy signal occurs when the %D
line crosses the 20% and is used as an oversold
warning signal. This signal is more reliable
if you wait until the %K and %D lines turn
upward below 5% before buying.This signal
can be confirmed again when the %D crosses
the 50% line after the initial signal.
Fundamentals:
Step
3: To limit our results we will also insert
a price range of $1-$100 by using a close
greater that or equal to $1, a close less
than or equal to $100, and an average 30-day
volume greater than or equal to 10,000. (Note
that volume is in thousands, therefore 10
= 10,000. See 30
day average volume)
Step
4: click search and view results
These
are the results of the search.

In
these results we are looking for stocks that
have generated all three signals around an
approximate recent date.
When
we look at one of the securities returned
by this screen we can see where these indicators
compliment each other as shown in the chart
below.

An
important step in determining whether or not
to invest in this company is to find out why
the price dropped so suddenly. These large
price shifts make technical indicators unreliable
as they "settle back down." Previous
signals generated by this system showed promise.
All
three indicators shown above are overbought/oversold
indicators that can be used to confirm each
other. But, by mixing different types of indicators
you may be able to get more information about
the stocks current price trend. It is important
to experiment to see which indicators may
compliment your own trading system.