Analyzing Chart Patterns
For many analysts, the chart of a security is the starting point for all future analysis. Even staunch critics of technical analysis use charts to some extent. And for good reason: charts can provide a lot of information in a small amount of time.
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Analyzing Chart Patterns
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Table of Contents
1) Analyzing Chart Patterns: Introduction
2) Analyzing Chart Patterns: Why Charts?
3) Analyzing Chart Patterns: Head And Shoulders
4) Analyzing Chart Patterns: Cup And Handle
5) Analyzing Chart Patterns: Double Top And Double Bottom
6) Analyzing Chart Patterns: Triangles
7) Analyzing Chart Patterns: Flags And Pennants
8) Analyzing Chart Patterns: The Wedge
9) Analyzing Chart Patterns: Gaps
10) Analyzing Chart Patterns: Triple Tops And Bottoms
11) Analyzing Chart Patterns: Round Bottoms
12) Analyzing Chart Patterns: Conclusion
By Chad Langager and Casey Murphy, senior analyst of ChartAdvisor.com
1) Introduction
Ever looked at the chart of a stock or commodity? Most likely, you have. Just
about everyone who has ever analyzed a security takes a look at the price
movements of the past month, quarter, year, etc.
For many analysts, the chart of a security is the starting point for all future
analysis. Even staunch critics of technical analysis use charts to some extent.
And for good reason: charts can provide a lot of information in a small amount of
time.
Taking a look at the five-year chart of a company, you can quickly determine how
well shareholders have done over the period. Based on the movements
represented on the chart, one can tell if a company's share value has grown over
the period or lagged.
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The chart reader also can determine the volatility of the company’s shares by
looking at the movements on the chart. A company whose stock exhibits very
jagged up-and-down movements is clearly more volatile than a company whose
stock moves relatively smoothly across time.
But this is only the tip of the iceberg in terms of how charts are used by market
participants. In this tutorial, we'll introduce you to some of the more advanced
uses of charts.
2) Why Charts?
Before the advent of computers and data feeds, the use of charts to formulate
trading strategies was outside the mainstream of trading techniques. The reason,
creating charts was difficult. Each chart had to be created by hand, with chartists
adding another data point at the close of trading for each security they were
following. Also, chart users were often misrepresented as a bizarre group of
individuals huddled in the recesses of the brokerage house as they added the
latest data point to their closely coveted charts.
But with the advancement of technology and the increased popularity of technical
analysis, the use of charts has greatly increased, making them one of, if not the
most important tools used by technical traders.
A single chart has the ability to display a significant amount of information. More
conceptually, charts are an illustration of the struggle between buyers and
sellers. While this point is debatable between the schools of investment like
technical, fundamental and efficient market analysis, technical analysis assumes
that: a) prices discount everything, b) prices moves in trends and c) history
repeats itself.
Assuming the above tenets are true, charts can be used to formulate trading
signals and can even be the only tool a trader utilizes.
Patterns on a Chart
Chart patterns signal to traders that the price of a security is likely to move in one
direction or another when the pattern is complete.
There are two types of patterns in this area of technical analysis: reversal and
continuation. A reversal pattern signals that a prior trend will reverse on
completion of the pattern. Conversely, a continuation pattern indicates that the
prior trend will continue onward upon the pattern's completion.
The difficulty in identifying chart patterns and their subsequent signals is that
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chart use is not an exact science. In fact, it's often viewed as more of an art than
a science. While there is a general idea and components to every chart pattern,
the price movement does not necessarily correspond to the pattern suggested by
the chart. This should not discourage potential users of charts - once the basics
of charting are understood, the quality of chart patterns can be enhanced by
looking at volume and secondary indicators.
There are several concepts that need to be understood before reading about
specific chart patterns. The first is a trendline, which is a line drawn on a chart to
signal a level of support or resistance for the price of the security. Support
trendlines are the levels at which prices have difficulty falling below. Conversely,
a resistance trendline illustrates the level at which prices have a hard time going
above. These trendlines can be constant price levels, such as $50, or rise or fall
in the direction of the trend as time goes on.
Now that we have an understanding of the concepts behind the use of charts as
a trading technique, we can start to explore the many different patterns used by
chartists.
3) Head And Shoulders
The head-and-shoulders pattern is one of the most popular and reliable chart
patterns in technical analysis. And as one might imagine from the name, the
pattern looks like a head with two shoulders.
Head and shoulders is a reversal pattern that, when formed, signals the security
is likely to move against the previous trend. There are two versions of the head-
and-shoulders pattern. The head-and-shoulders top is a signal that a security's
price is set to fall, once the pattern is complete, and is usually formed at the peak
of an upward trend. The second version, the head-and-shoulders bottom (also
known as inverse head and shoulders), signals that a security's price is set to
rise and usually forms during a downward trend.
Both of these head and shoulders have a similar construction in that there are
four main parts to the head-and-shoulder chart pattern: two shoulders, a head
and a neckline. The patterns are confirmed when the neckline is broken, after the
formation of the second shoulder.
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Figure 1: Head-and-shoulders pattern
The head and shoulders are sets of peaks and troughs. The neckline is a level of
support or resistance. The head and shoulders pattern is based on Dow Theory's
peak-and-trough analysis. An upward trend, for example, is seen as a period of
successive rising peaks and rising troughs. A downward trend, on the other
hand, is a period of falling peaks and troughs. The head-and-shoulders pattern
illustrates a weakening in a trend where there is deterioration in the peaks and
troughs.
Head and Shoulders Top
Again, the head-and-shoulders top signals to chart users that a security's price is
likely to make a downward move, especially after it breaks below the neckline of
the pattern. Due to this pattern forming mostly at the peaks of upward trends, it is
considered to be a trend-reversal pattern, as the security heads down after the
pattern's completion.
This pattern has four main steps for it to complete itself and signal the reversal.
The first step is the formation of the left shoulder, which is formed when the
security reaches a new high and retraces to a new low. The second step is the
formation of the head, which occurs when the security reaches a higher high,
then retraces back near the low formed in the left shoulder. The third step is the
formation of the right shoulder, which is formed with a high that is lower than the
high formed in the head but is again followed by a retracement back to the low of
the left shoulder. The pattern is complete once the price falls below the neckline,
which is a support line formed at the level of the lows reached at each of the
three retracements mentioned above.
Inverse Head and Shoulders (Head-and-Shoulders Bottom)
The inverse head-and-shoulders pattern is the exact opposite of the head-and-
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shoulders top, as it signals that the security is set to make an upward move.
Often coming at the end of a downtrend, the inverse head and shoulders is
considered to be a reversal pattern, as the security typically heads higher after
the completion of the pattern.
Figure 2: Inverse head-and-shoulders pattern
Again, there are four steps to this pattern, starting with the formation of the left
shoulder, which occurs when the price falls to a new low and rallies to a high.
The formation of the head, which is the second step, occurs when the price
moves to a low that is below the previous low, followed by a return to the
previous high. This move back to the previous high creates the neckline for this
chart pattern. The third step is the formation of the right shoulder, which sees a
sell-off, but to a low that is higher than the previous one, followed by a return to
the neckline. The pattern is complete when the price breaks above the neckline.
The Breaking of the Neckline and the Potential Return Move
As seen from the above, the head-and-shoulders pattern is complete when the
neckline is broken; the trend is then considered reversed, and the security should
be heading in a new direction. The point of breakout is when most traders
following the pattern would enter the security.
However, the security will not always just continue in the direction suggested by
the pattern after the breakout. For this reason it's important to be aware of what
is known as a "throwback" move. This situation occurs when the price breaks
through the neckline, setting a new high or low (depending on the pattern),
followed by a retreat back to the neckline.
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Figure 3: Throwback move illustration
This move back to the neckline is considered to be a test of the pattern and the
newly reversed support or resistance. Remember that when a trend shifts (or a
reversal pattern is confirmed), what was once support now become resistance,
and vice versa. In the case of an inverse head-and-shoulders pattern (as shown
in the chart above), the neckline represented a level of resistance for the security
before it broke out. Upon the security moving above the neckline to confirm the
pattern, the restrictive neckline becomes support for any move back up.
While it can be alarming to see a security move in the opposite direction of the
trend suggested by the pattern, it isn't all that bad. The reason being that the
successful test of this new level of support or resistance helps to strengthen the
pattern and its suggested new direction. So, it's important to wait for the pattern
to test out and not sell out too quickly - before the pattern makes its bigger
moves.
Volume
In technical analysis and chart-pattern analysis, volume plays an important role
as it is used as a secondary indicator. Volume indicates activity and money
movement. When volume is high, there is a lot of activity and money changing
hands - making it an important indicator to follow.
For the head-and-shoulders pattern, volume is used mainly at the point of
breakout to help confirm the pattern. At this point, it's important that the breakout
happens on a large-volume move. For a head-and-shoulders top, when the price
breaks below the neckline (in a downward direction), it's best when this occurs
during a large volume increase, which signals heavy selling. This strongly
indicates that the underlying supply and demand in the market is moving in the
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same direction the chart pattern is predicting.
Volume can also be used as a secondary indicator during the formation of the
pattern, well before the breakout, to gain an idea of the pattern's strength.
For a head-and-shoulders top, the left shoulder should show heavy volume as it
hits its new peak. Low volume should take the left shoulder down to the neckline.
The run towards the peak in the head should be on lighter volume compared to
the peak formed in the left shoulder.
This should be a warning, as volume should move with trends - not against them.
The peak formed in the right shoulder should be seen with even lighter volume
than in either the head or the left shoulder. And again, the volume should be high
when the neckline is broken, which is by far the most important area to watch in
terms of volume. If the volume is lighter on the neckline break, the chances of the
price moving back to the neckline after breaking is greater than if the neckline
break was accompanied by large volume.
This interaction of volume and price movement in forming the reversal signal is
not set in stone. However, it is the general tendency in the chart pattern.
Slope of the Neckline
Another key factor in the head-and-shoulders pattern is the formation of the
neckline. The reason being that the neckline acts as support or resistance during
the formation of the pattern, along with being the entry point at which the pattern
confirms itself.
In most of the above examples, the neckline is flat, but this need not be the case
for the pattern to provide a potential trade. In most cases, the neckline will in fact
be slanted either up or down. In general, a technically strong head-and-shoulders
top should have a flat or slightly upward-trending neckline. For a head-and-
shoulders bottom, it should be flat or slightly downward, similar to the one shown
above in figure 3.
Price Objective
An important, but often overlooked, factor in technical analysis and chart patterns
is the calculation of price objectives. This is a measure of where the price is
considered to be headed, based on a confirmed pattern.
While the price's direction is already known, based on the signal, what needs to
be calculated is the projected price movement. This is done so that targets can
be set, protective stops can be instituted and the worth of a trade can be
evaluated.
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Figure 4
This is measured based on the height of the chart pattern, which is essentially
the distance in price between the peak of the head and the neckline. For
example, let's say that in a head-and-shoulders top, the peak of the head is
formed at $50 and the neckline was established at $40 - a difference of $10.
The price objective is calculated by subtracting the price at which the pattern
breaks the neckline ($40) by the difference between the head and the neckline
($10). Based on this example, the price objective is $30 ($40-$10).
This price objective is not an absolute and is used as a guideline to the
attractiveness of a trade. The larger the difference between the objective and the
price at the neckline, the more worth the trade has, as it will yield greater returns.
4) Cup And Handle
A cup-and-handle pattern resembles the shape of a tea cup on a chart. This is a
bullish continuation pattern where the upward trend has paused, and traded
down, but will continue in an upward direction upon the completion of the pattern.
This pattern can range from several months to a year, but its general form
remains the same.
The cup-and-handle pattern is preceded by an upward move, which stalls and
sells off. The sell-off is what forms the initial part of this pattern. After the sell-off,
the security will basically trade flat for an extended period of time, with no clear
trend. The next part of the pattern is the upward move back towards the peak of
the preceding upward move. The last part of the pattern, known as the handle, is
a relatively smaller downward move before the security moves higher and
continues the previous trend.
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Components of the Cup and Handle
There are several components of the cup and handle that should be noted in
order to evaluate the potential trading signal. First, it's important that there is an
upward trend before the formation of the cup and handle. In general, the larger
the prior trend is, the lower the potential for a large breakout after the pattern has
been completed. The reason being that a lot of the run-up in the security
happened prior to the formation of the cup, again weakening the size of the
potential upward move.
Figure 1: Cup-and-handle pattern
The construct of the cup itself is also important: it should be a nicely rounded
formation, similar to a semi-circle. The reason is that a cup-and-handle pattern is
a signal of consolidation within a trend, where the weaker investors leave the
market and new buyers and resolute holders stay in the security. If the shape of
the cup is too sharp (or quick), it is not considered a true consolidation phase in
the upward trend and thus weakens the potential trade signal.
The cup's height should also be a focus: a traditional cup-and-handle pattern
should be between one-third and two-thirds the size of the previous upward
movement, depending on market volatility. So, if the move of the preceding trend
was from $10 to $35, the height of the cup should be at least $8 (roughly $25 x
33%) to $16 (roughly $25 x 66%). The height of the cup can also be used as an
initial price target after the pattern completes itself and breaks out of the handle.
The Handle
Another important component to watch is the handle, as it completes the pattern.
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As mentioned before, the handle is the downward move by the security after the
upward move on the right side of the cup. If the handle is downward moving, the
general rule is that the handle's downward movement can retrace one-third of the
gain made in the right side of the cup. During this downward move, a descending
trendline can be drawn, which forms the signal for the breakout. A move by the
security above this descending trendline is a signal that the prior upward trend is
set to begin.
A more conservative breakout signal would be above the price point of the two
peaks in the cup. This is the price where the initial upward trend peaked and the
point where the cup's upward move on the right side peaked before entering the
handle. A breakout above this point is the strongest signal of a true resumption of
the prior trend.
As with most chart patterns, volume is vital in the confirmation of the pattern itself
and the signal formed. Again, the most important area of focus is the breakout:
the stronger the volume on the upward breakout, the clearer the sign that the
upward trend will continue. Like the head-and-shoulders pattern, the price may
move back to the trendline to test the support.
The cup and handle is another time-tested pattern that has created valuable
gains for investors. The components mentioned above are not absolutes but help
to highlight areas of focus as a security trades in a cup and handle.
5) Double Top And Double Bottom
The double top and double bottom are another pair of well-known chart patterns
whose names don’t leave much to the imagination. These two reversal patterns
illustrate a security's attempt to continue an existing trend. Upon several attempts
to move higher, the trend is reversed and a new trend begins. These chart
patterns formed will often resemble what looks like a “W” (for a double bottom) or
an “M” (double top).
Double Top
The double-top pattern is found at the peaks of an upward trend and is a clear
signal that the preceding upward trend is weakening and that buyers are losing
interest. Upon completion of this pattern, the trend is considered to be reversed
and the security is expected to move lower.
The first stage of this pattern is the creation of a new high during the upward
trend, which, after peaking, faces resistance and sells off to a level of support.
The next stage of this pattern will see the price start to move back towards the
level of resistance found in the previous run-up, which again sells off back to the
support level. The pattern is completed when the security falls below (or breaks
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down) the support level that had backstopped each move the security made, thus
marking the beginnings of a downward trend.
Figure 1: Double-top pattern
It's important to note that the price does not need to touch the level of resistance
but should be close to the prior peak. Also, when using this chart pattern one
should wait for the price to break below the key level of support before entering.
Trading before the signal is formed can yield disastrous results, as the pattern is
only setting up the possibility for the trend reversal and could trade within this
banded range for some time without falling through.
This pattern is a clear illustration of a battle between buyers and sellers. The
buyers are attempting to push the security but are facing resistance, which
prevents the continuation of the upward trend. After this goes on a couple of
times, the buyers in the market start to give up or dry up, and the sellers start to
take a stranglehold of the security, sending it down into a new downtrend.
Again, volume should be an important focus as one should look for an increase
in volume when the security falls below the support level. Also, as in other chart
patterns, do not be alarmed if there is a return to the previous support level that
has now become a resistance level in the newly established trend.
Double Bottom
This is the opposite chart pattern of the double top as it signals a reversal of the
downtrend into an uptrend. This pattern will closely resemble the shape of a "W".
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Figure 2: Double-bottom pattern
The double bottom is formed when a downtrend sets a new low in the price
movement. This downward move will find support, which prevents the security
from moving lower. Upon finding support, the security will rally to a new high,
which forms the security's resistance point. The next stage of this pattern is
another sell-off that takes the security down to the previous low. These two
support tests form the two bottoms in the chart pattern. But again, the security
finds support and heads back up. The pattern is confirmed when the price moves
above the resistance the security faced on the prior move up.
Remember that the security needs to break through the support line to signal a
reversal in the downward trend and should be done on higher volume. As in the
double top, do not be surprised if the price returns to the breakout point to test
the new support level in the upward trend.
Price Objective and Adjustments
It's important to get an idea as to the size of the resulting move once the signal
has been formed. In both the double top and double bottom, the initial price
objective can be measured by taking the price distance between the support and
resistance levels or the range that chart pattern trades.
For example, assume in a double top that the upward trend peaks at $50 and
retraces to $40 to form the support level. Assuming everything follows through on
the chart pattern and the support level is broken at $40, the initial price objective
should be set at $30 ($40-$10).
Often in technical analysis and chart patterns, we're presented with an ideal chart
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setup; but in reality the pattern doesn't always look as perfect as it's supposed to.
In double tops and double bottoms one thing to remember is that the price on the
second test does not always need to reach the same distance as the first test.
Another problem that can occur is the second testing point, where the top or
bottom actually breaks the level that the first top or bottom test created. If this
occurs, it can give a signal that the previous trend will continue - instead of
reverse - as the pattern suggests. However, don’t be too quick to abandon the
pattern as it could still materialize.
If the price does, in fact, move above the prior test, look to see if the move was
accompanied by large volume, suggesting a trend continuation. For example, if
on the second test of a double bottom the price falls below the support line on
heavy volume, it is a good sign the downward trend will continue and not reverse.
If the volume is very weak, it could just be a last attempt to continue the
downward trend, but the trend will ultimately reverse.
The double tops and double bottoms are strong reversal patterns that can
provide trading opportunities. But it is important to be careful with these patterns
as the price can often move either way. Consequently, it's important that the
trade is implemented once the support/resistance line is broken.
6) Triangles
As you may have noticed, chart pattern names don't leave much to the
imagination. This is no different for the triangle patterns, which clearly form the
shape of a triangle. The basic construct of this chart pattern is the convergence
of two trendlines - flat, ascending or descending - with the price of the security
moving between the two trendlines.
There are three types of triangles, which vary in construct and significance: the
symmetrical triangle, the descending triangle and the ascending triangle.
Symmetrical triangle
The symmetrical triangle is mainly considered to be a continuation pattern that
signals a period of consolidation in a trend followed by a resumption of the prior
trend. It is formed by the convergence of a descending resistance line and an
ascending support line. The two trendlines in the formation of this triangle should
have a similar slope converging at a point known as the apex. The price of the
security will bounce between these trendlines, towards the apex, and typically
breakout in the direction of the prior trend.
If preceded by a downward trend, the focus should be on a break below the
ascending support line. If preceded by an upward trend, look for a break above
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the descending resistance line. However, this pattern doesn't always lead to a
continuation of the previous trend. A break in the opposite direction of the prior
trend should signal the formation of a new trend.
Figure 1: Symmetrical triangle
Above is an example of a symmetrical triangle that is preceded by an upward
trend. The first part of this pattern is the creation of a high in the upward trend,
which is followed by a sell-off to a low. The price then moves to another high that
is lower than the first high and again sells off to a low, which is higher than the
previous low. At this point the trendlines can be drawn, which creates the apex.
The price will continue to move between these lines until breakout.
The pattern is complete when the price breaks out of the triangle - look for an
increase in volume in the direction of the breakout. This pattern is also
susceptible to a return to the previous support or resistance line that it just broke
through, so make sure to watch for this level to hold if it does indeed break out.
Ascending Triangle
The ascending triangle is a bullish pattern, which gives an indication that the
price of the security is headed higher upon completion. The pattern is formed by
two trendlines: a flat trendline being a point of resistance and an ascending
trendline acting as a price support.
The price of the security moves between these trendlines until it eventually
breaks out to the upside. This pattern will typically be preceded by an upward
trend, which makes it a continuation pattern; however, it can be found during a
downtrend.
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Figure 2: Ascending triangle
As seen above, the price moves to a high that faces resistance leading to a sell-
off to a low. This follows another move higher, which tests the previous level of
resistance. Upon failing to move past this level of resistance, the security again
sells off - but to a higher low. This continues until the price moves above the level
of resistance or the pattern fails.
The most telling part of this pattern is the ascending support line, which gives an
indication that sellers are starting to leave the security. After the sellers are
knocked out of the market, the buyers can take the price past the resistance level
and resume the upward trend.
The pattern is complete upon breakout above the resistance level, but it can fall
below the support line (thus breaking the pattern), so be careful when entering
prior to breakout.
Descending triangle
The descending triangle is the opposite of the ascending triangle in that it gives a
bearish signal to chartists, suggesting that the price will trend downward upon
completion of the pattern. The descending triangle is constructed with a flat
support line and a downward-sloping resistance line.
Similar to the ascending triangle, this pattern is generally considered to be a
continuation pattern, as it is preceded by a downward trendline. But again, it can
be found in an uptrend.
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Figure 3: Descending triangle
The first part of this pattern is the fall to a low that then finds a level of support,
which sends the price to a high. The next move is a second test of the previous
support level, which again sends the stock higher - but this time to a lower level
than the previous move higher. This is repeated until the price is unable to hold
the support level and falls below, resuming the downtrend.
This pattern indicates that buyers are trying to take the security higher, but
continue to face resistance. After several attempts to push the stock higher, the
buyers fade and the sellers overpower them, which sends the price lower.
7) Flags And Pennants
The flag and pennant patterns are two continuation patterns that closely
resemble each other, differing only in their shape during the pattern's
consolidation period. This is the reason the terms flag and pennant are often
used interchangeably. A flag is a rectangular shape, while the pennant looks
more like a triangle.
These two patterns are formed when there is a sharp price movement followed
by generally sideways price movement, which is the flag or pennant. The pattern
is complete when there is a price breakout in the same direction of the initial
sharp price movement. The following move will see a similarly sharp move in the
same direction as the prior sharp move. The complete move of the chart pattern -
from the first sharp move to the last sharp move - is referred to as the flag pole.
The flag or pennant is considered to be flying at half-mast, as the distance of the
initial price movement is thought to be roughly equal to the proceeding price
move. The reason these patterns form is that after a large price movement, the
market consolidates, or pauses, before resuming the initial trend.
The Flag
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The flag pattern forms what looks like a rectangle. The rectangle is formed by
two parallel trendlines that act as support and resistance for the price until the
price breaks out. In general, the flag will not be perfectly flat but will have its
trendlines sloping.
Figure 1: The flag pattern
In general, the slope of the flag should move in the opposite direction of the initial
sharp price movement; so if the initial movement were up, the flag should be
downward sloping.
The buy or sell signal is formed once the price breaks through the support or
resistance level, with the trend continuing in the prior direction. This breakthrough
should be on heavier volume to improve the signal of the chart pattern.
The Pennant
The pennant forms what looks like a symmetrical triangle, where the support and
resistance trendlines converge towards each other. The pennant pattern does
not need to follow the same rules found in triangles, where they should test each
support or resistance line several times. Also, the direction of the pennant is not
as important as it is in the flag; however, the pennant is generally flat.
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Figure 2: The Pennant
General Ideas
While the construct of the pause in the trend is different for the flag and pennant,
the attributes of the chart patterns themselves are similar. It is vital that the price
movement prior to the flag or pennant be a strong, sharp move.
Typically, these patterns take less time to form during downtrends than in
uptrends. In terms of pattern length, they are generally short-term patterns lasting
one to three weeks, but can be formed over longer periods.
The volume, as with most breakout signals, should be seen as strong during the
breakout to confirm the signal. Upon breakout, the initial price objective is equal
to the distance of the prior move added to the breakout point. For example, if a
prior sharp up movement was from $30 to $40, then the resulting price objective
from a price breakout of $38 would be $48 ($38+$10).
8) The Wedge
The wedge chart pattern signals a reverse of the trend that is currently formed
within the wedge itself. Wedges are similar in construction to a symmetrical
triangle in that there are two trendlines - support and resistance - which band the
price of a security.
The wedge pattern differs in that it is generally a longer-term pattern, usually
lasting three to six months. It also has converging trendlines that slant in an
either upward or downward direction, which differs from the more uniform
trendlines of triangles.
There are two main types of wedges – falling and rising – which differ on the
overall slant of the pattern. A falling wedge slopes downward, while a rising
wedge slants upward.
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Falling Wedge
The falling wedge is a generally bullish pattern signaling that one will likely see
the price break upwards through the wedge and move into an uptrend. The
trendlines of this pattern converge, with both being slanted in a downward
direction as the price is trading in a downtrend.
Figure 1: Falling wedge pattern
From the above, one can see that a wedge is similar to the triangles, in that the
price movement bounces between the two trendlines, which are bounding the
price movement.
Another thing to look at in the falling wedge is that the upper (or resistance)
trendline should have a sharper slope than the support level in the wedge
construction. When the lower (or support) trendline is clearly flatter as the pattern
forms, it signals that selling pressure is waning, as sellers have trouble pushing
the price down further each time the security is under pressure.
The price movement in the wedge should at minimum test both the support
trendline and the resistance trendline twice during the life of the wedge. The
more times it tests each level, especially on the resistance end, the higher quality
the wedge pattern is thought to be.
The buy signal is formed when the price breaks through the upper resistance
line. This breakout move should be on heavier volume, but due to the longer-
term nature of this pattern, it's important that the price has successive closes
above the resistance line.
Rising Wedge
Conversely, a rising wedge is a bearish pattern that signals that the security is
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likely to head in a downward direction. The trendlines of this pattern converge,
with both trendlines slanted in an upward direction.
Figure 2: Rising wedge pattern
Again, the price movement is bounded by the two converging trendlines. As the
price moves towards the apex of the pattern, momentum is weakening. A move
below the lower support would be viewed by traders as a reversal in the upward
trend.
As the strength of the buyers weakens (exhibited by their inability to take the
price higher), the sellers start to gain momentum. The pattern is complete, with
the sellers taking control of the security, when the price falls below the supporting
trendline.
9) Gaps
A gap in a chart is essentially an empty space between one trading period and
the previous trading period. They usually form because of an important and
material event that affects the security, such as an earnings surprise or a merger
agreement.
This happens when there is a large-enough difference in the opening price of a
trading period where that price and the subsequent price moves do not fall within
the range of the previous trading period. For example, if the price of a company’s
stock is trading near $40 and the next trading period opens at $45, there would
be a large gap up on the chart between these two periods, as shown by the
figure below.
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