Number
27
Stock
screening with
price and volume ratios
Overview:
In this newsletter,
we will be building a screen based on price and
volume growth. Combining these attributes in your
screens just might add that little edge you have
been looking for.
First, some review:
-
For
a quick review on simple moving averages click
here
-
For
a quick review on screening with volume ratios
click
here
-
For a quick review on screening with price ratios
click
here
We will highlight
the three most commonly used moving averages (5,
20 and 50 day) and their ratio counterparts.
The 5, 20 and
50 day SMA and the 5, 20 and 50 day price ratio
The 5, 20 and 50 day
ratio is the percentage difference from last close
compared to the 5-day price average (sum of last
5, 20 and 50 closes divided by 5, 20 and 50 respectively).
The simple moving average is the sum of the last
5, 20 and 50 closes and divided by 5, 20 and 50.
Repeat for every day to create a line. The major
difference, is that as a larger number of days is
applied, the less sensitive the average becomes
to the price movement.
Since moving averages
are trend following systems, using a combination
of numbers is ideal. The smallest value gives the
warning and the largest value confirms the trend.
In any breakout, the 5-day SMA will cross the price
first, then the 20-day SMA; the 5 and 20-day cross;
and, nearby/soon, the 50 day SMA crosses the price.
Acting on the 5-day SMA is typically considered
far too risky, while waiting for the 50-day SMA
might put you in at the halfway mark. So in this
case, we will be looking for the 5 and 20 cross
-- and if the chart looks fine, then it's time for
some grunt company analysis. But for now, we will
only be looking at the screening stage.
In general, the following
concepts apply when using moving averages and ratios:
-
Bearish:
The 5-day SMA is above or has crossed to be above
the price line. This results in a price ratio
below 1 (5 day price ratio = close / 5-day average
price).
-
Bullish:
The 5-day SMA has crossed the price line (the
last close is above the 5 day price average).
A positive percentage tells us that the 5-day
SMA is below the price line and that the short
term price trend is up.
The
lower or higher the percentage is, the better
our indication of the strength of the move.
Screening for
your stocks
We will create
a screen for the chart characteristics that are
highlighted in the yellow box below.

This screen should be
modified to suit your strategy. Here, it is mostly
intended to describe the use of moving averages
and ratios to screen for stocks. As in all cases,
after you find a particular chart you are interested
in, based on your trading system, further company
analysis is highly advised to confirm the chart
pattern/breakout. Companies that can meet both technical
and fundamental scrutiny have higher success rates.
In the case of INTC,
we will focus on several key chart characteristics.
The technical portion for our screen will include
a 5 and 20-day MA cross, and a price ratio that
is above the 5 and 20-day MA yet below the 50 day
MA. The problem with the signal in this chart, is
that within the yellow box there was not any noticeable
volume spike. The volume spike is a strong indicator
of a trend change rather than just a correction.
In this screen, we will also ensure that volume
is increasing rather than declining by including
a volume ratio (you can always run the inverse screen
and look for shorts by changing the technicals from
buy to sells, and using the less-than operator for
the ratios).
Bullish Screen:
Technicals
Technical 1:
5-20 MA cross within the last 30 days
Technical
2: 50 MA cross within the last 5 days
Fundamental
1: Price ratio 5 day - greater than or equal
to - 1.01
(the price is trending up (on average) for the last
5 days and closed 1% over the 5 day average)
Fundamental 2: Price ratio 20 day - greater
than or equal to - 1.02
(the price is trending up (on average) for the last
20 days and closed 2% over the 20 day average)
Fundamental
3: Volume ratio 20 day - greater than or equal
to - 1.05
(the volume is trending up (on average) for the
last 20 days and last daily volume was 5% over the
20 day average)
Fundamental
4: Close greater than 10
(last close over $10)
Fundamental
5: Close less than 80
(last close under $80)
Fundamental
6: Average 30 day volume greater than 1 million
(minimum average 30 day volume should be at least
1 million shares per day, this ensures only liquid
issues are returned by the screener)
StockScreener
sample:



Results:

A total of 46 matches
resulted in the above screen. Sorting the list by
price growth, or by adding/replacing technicals
to the screen, will greatly affect your Top 10.
In this case I have not sorted the list to any particular
order. When charting the results, you will find
that while the moving averages and ratios match
the search, some of the results tend to be too far
up the trend or not acceptable for another particular
reason. This screen should be modified with additional
technical or fundamental criteria that match your
trading style/system.
Click on the link
to see a current chart of the results:
-
-
-
Putting ChartFilter
into context
To build screens that
match your trading style, start with a chart similar
to the Intel chart above. This can be done for any
trading style or system in 4 quick steps:
- Find the company and
chart pattern you would like to have traded.
- Apply your indicators
and identify the pattern of events that precede
the move, for example: the 5-day moving average
first crossed the price, then the 20-day moving
average followed by the 50-day moving average.
In each case, include a time frame. For example:
a 5-day moving average cross within the last 20
days, a 20-day moving average cross within the
last 10 days and finally, a 50-day moving average
cross within the last 5 days. You do not have
to use moving averages. Technicals will vary for
every trader, so use the indicators that fit your
system
- Include any company
fundamentals, in the case of the StockScreener
this is where you will also find the ratios. Click
here for other ratios.
- Run screen and modify
as necessary. Remember that no screen is perfect
and there will always be some unwanted results.
By following up good charts with company research
you can reduce the risk of error.
ChartFilter tips:
Not signed up for
the StockScreener yet? Sign
up here for a free trial.
Click
here. for our indicators page which features
some of the best reports you will find on technical
analysis methods and indicators.
Click
here, if you need to know about a signal (chart
samples included).
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