January 2005Trading Tip:
The Best of Trading Tips by Howard Arrington
What is over 500 printed pages in length and been 5 years in the
making? The answer is the Trading Tips newsletter,
which is beginning its 6th year. When readers asks if past
newsletter issues are available, I realize they have not yet
discovered this informative resource on the Ensign web
site. This table lists some of the best articles
published in past Trading Tips issues. Click on a link to read
the full article.
Trading Tip:
The Geometry of Charts by Howard Arrington
A chart is the primary tool used by technicians to analyze a
security. A chart is a convenient graphical way to
represent the time, price and volume properties of a trade
event. This article will show the geometrical relationships
for various chart types.
Four basic properties of a trade:
- The date and time when the trade occurred. This property
is called the timestamp.
- The price of the trade. This property is called the
trade price.
- The number of shares or contracts involved in the trade.
This property is called trade volume.
- The trade event itself. This property can be thought of
as a tick.
The most common way to present the above information about a
trade, is to plot trades on a graph where time is the horizontal
axis, and price is the vertical axis.
Raw Tick Chart |
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A raw tick chart shows the
individual trade events. The trade event is plotted as a
dot on the price scale (vertical axis) at its timestamp
(horizontal axis). The trade volume is shown
below as a vertical blue histogram bar.
All subsequent chart types are just variations of this
basic graphical presentation of the four trade
properties. All variations involve chunking raw
ticks together to form a collection. The collection is
drawn as a bar, instead of as a dot. |
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Chunking Properties |
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The tick chunking can be thought of
as enclosing a group of ticks in a bounding rectangle.
This rectangle introduces the following bar properties.
Open: The price of the first tick in the
chunk. Close: The price of the last tick in
the chunk. High: The price of the highest tick
in the chunk. Low: The price of the
lowest tick in the chunk. Volume: Sum the
trade volumes in the chunk. Timestamp: From
either the first or the last tick in the chunk. |
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Fixed Time Period |
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The width of the chunking rectangle
is based on a fixed period of time. The fixed time
interval may be any of the following time periods.
Intra-day: The time period is some multiple of
1 minute.
Day: The time period is 24 hours, measured from an
exchange's afternoon close.
Week: The time period is a week.
Month: The time period is a calendar month.
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Fixed Price Range |
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The height of the chunking
rectangle is based on a fixed price range. When the
price range is exceeded, a new bar is started. An
in depth discussion of this type of chart can be read in this
article: Momentum
Bars.
The bar volume is shown in blue.
The bar tick count is shown in red. |
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Fixed Volume |
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The width of the chunking rectangle
is based on the sum of the trade volumes. When the
sum exceeds some fixed volume level, a new bar is started.
For example, if the fixed volume level is 500, each bar
will build until its volume is 500. If the sum is
currently at 496 and the next tick's trade volume is 10, a
volume of 4 will finish off the current bar's volume.
The new bar will start with the remainder 6 volume.
The bar tick count is shown in red. |
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Fixed Tick Count |
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The last variation adjusts the
width of the chunking rectangle until it encloses the same
number of trade events. This is called a constant tick
chart.
The bar volume is shown in blue.
The bar tick count is shown in red.
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The four chart types shown above share in common the four basic
properties of a trade. Each chart type forces one of the
basic properties to be a fixed unit for each bar in the chart.
The three other basic properties will of necessity have a variable
size. This table summarizes the chart types and the four
basic properties of time, price, volume and trade event.
Chart Type |
Time Period |
Price Range |
Volume |
Tick Count |
Intra-day, Day |
Fixed |
Variable |
Variable |
Variable |
Constant Range |
Variable |
Fixed |
Variable |
Variable |
Constant Volume |
Variable |
Variable |
Fixed |
Variable |
Constant Tick |
Variable |
Variable |
Variable |
Fixed |
Display Formats:
The chunked group of raw ticks form a bar, which can be displayed
using the following variations. The display variations can be
used with any of the chart types.
There are other variations in the presentation of the trade
information. Each variation emphases some particular property
or characteristic of the underlying data, often at the expense of
ignoring or hiding other characteristics. So this
article is by no means complete and exhaustive.
Some variations that were not covered include: Renko Charts,
Swing Charts, Heikin-Ashi
Charts, Average
Candle Charts, Point
and Figure Charts, Three Line Break Charts, Price Histogram
Charts, and Market Profile Charts.
Beginning traders may wonder whether one chart type or display
variation is superior to another. The answer is
basically 'No'. All chart types have their roots in the
same trade information. Every variation will have
traders who use that variation successfully and exclusively.
Having said that does not mean that there isn't a popularity
bias. Here is my opinion about the popularity of the different
chart types and display variations.
Popularity |
Chart Type |
Display Format |
High |
Constant Tick |
Candlesticks |
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Intra-day, Daily |
Standard Bars |
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Constant Range |
Line Chart |
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Constant Volume |
Close Ticks, not used |
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Price Histogram |
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Low |
all others |
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Trading Tip:
Yesterday's High, Low, Close by Ana Maria Gallo
I recently noticed that my small volume charts didn't show the
same yesterday's high (YH), low (YL), and close (YC) values as shown
on my minute charts. I keep the maximum bar count small and in
the case of the YH and YL, the data to find those values was no
longer in the chart data set! Rather than needlessly
increase the max bars, and in the process make a resource intensive
chart, I created a tab on the Daily Price Lines drawing tool that
writes YH and YL as Global Values (GV). Additionally, I
discovered that because the volume bars close out with volume, and
not time, that the close shown on those charts didn't match the
regular trading hours close. So, I added YC as another
GV. The resulting setup is shown below. I
can then draw the Daily Price Lines on my 5 minute chart and select
this predefined setup so that the correct real time hours
(RTH) YH, YL, and YC are written:
The GVs [18], [19] and [20] are then available to be
used by the Daily Price Lines that I place on my volume bar
charts. To do this, I created another Daily Price Lines
setup that reads the GVs and marks them as price lines. I
saved that setup as Tab 2. Ensign will then draw lines
at the price levels stored in the Global Variables, using the line
properties I selected. I always use the same colors for
high, low, and close. I see the GV labels and know that they
are the RTH values from the 5 minute chart.
Mail Bag:
'As always, thanks for your patience, help, and continued
enhancements to Ensign, and the value you create in this incredible
software package.' -F. Del Casino
01-03-2005
'Can't tell you how grateful I am for the really quick reply and
the fantastic support. Many thanks for your time and
help.' -N. Rayne 01-03-2005
'I think you have really hit the best template with the Study
Consensus, and also your CCI with Auto-Trendlines will do
more than Woodie's CCI setup.' -J.
Riffel 12-28-2004
'Being able to chart the tick chart speed (see Market
Speedometer) has added a great deal of value for me, very
nice!' - J. Tybrand 12-23-2004
'The December
issue must rank as one of the most outstanding "Tips" newsletters,
ever! You've illustrated in a neat, logical, and most
importantly, easy to understand way just what linear geometric
projections (i.e. lines) are. By putting them in a global
perspective, you demonstrate how this basic concept -- geometric
projection -- can be displayed in many ways using tools that
many don't even believe are related. Also, thanks too for the
links to the "speed bar". I saw it shown in a chart but
couldn't figure out how to do it. I love it! I am now
exclusively using volume bars for intra-day trading (aside from a
glance at a 10 min. or 2 min. bar chart) and will experiment with it
over the holiday. Best wishes to you and my gratitude for a
really "swell" program.' -A. Gallo
12-23-2004
'Thanks very much for the great software and the new history
data. Its a little scary seeing the big picture though, where
things have come from and where they could go.' -D. Morahan 12-22-2004
'I must admit that after many years of using various other
software, I find Ensign to be the most dynamic of them
all. I can't tell you how pleased I am with your
product. As President of the Society of Market Technicians in
Washington DC, (http://www.markettechnicians.org/),
I have recently briefed our membership about the technical wonders
of Ensign, in addition to your unbeatable price. I'm
absolutely sure you'll be seeing more new subscribers from the DC
area in the coming months as subscriptions from your competitors
expire. Thanking you in advance.' -K.
Armstrong 12-21-2004
'Your programming is the best. Years ago I took a course
from the father of Stochastic, George Lane. He introduced me
to Ensign then. The innovations you've made with Pesavento
Patterns tools makes trading enjoyable. The
key is to put all these tools to use, quickly and properly to
make money. And your Fibonacci programming tools work and
are easily employed. I always check the Fib ratios
on my Excel calculators (just as a fail safe), and the match is
on the money. When one trades a lower time frame it is
necessary to fly the same path as the larger time frames. I
can plot the larger time frames trend line over the tops of the
shorter one and get some unbelievable probability. Love this
stuff, great workmanship.' -W. McGrath
12-21-2004 |