Chart Patterns
Introduction
to Stock Chart Patterns
Stock
chart patterns often signal transitions between rising and falling trends. A
price pattern is a recognizable configuration of price movement identified
using a series of trendlines and/or curves.
When
a price pattern signals a change in trend direction, it is known as a reversal
pattern; a continuation pattern occurs when the trend continues in its existing
direction following a brief pause. There are many patterns used by traders—here
is how patterns are made and some of the most popular ones.
Types of Stock Chart Patterns
- Head and shoulder
- Double top and bottom
- Cup and handle
- Symmetrical Triangles
- Descending Triangles
- Ascending Triangles
- Wedge
- Flag
- Pennant
Head and shoulder
Head and shoulders is a
reversal pattern that can appear at market tops or bottoms as a series of three
pushes: an initial peak or trough, followed by a second and larger one, and
then a third push that mimics the first.
An uptrend interrupted by a
head and shoulders top pattern may experience a trend reversal, resulting in a
downtrend. Conversely, a downtrend that results in a head and shoulders bottom
(or an inverse head and shoulders) will likely experience a trend reversal to
the upside.
Horizontal or slightly sloped trendlines can be drawn connecting the peaks and troughs between the head and shoulders, as shown in the figure below. Volume may decline as the pattern develops and spring back once the price breaks above (in the case of a head and shoulders bottom) or below (in the case of a head and shoulders top) the trendline.
Double top and Bottom
The double top or bottom are
reversal patterns, signaling areas where the market has made two unsuccessful
attempts to break through a support or resistance level.
A double top often looks like the letter M
and is an initial push up to a resistance level followed by a second failed
attempt, resulting in a trend reversal.
A double bottom, on the other hand, looks
like the letter W and occurs when the price tries to push through a support
level, is denied, and makes a second unsuccessful attempt to breach the support
level. This often results in a trend reversal, as shown in the figure below.
Triple tops and bottoms are reversal
patterns that aren’t as prevalent as head and shoulders, double tops, or double
bottoms. But, they act similarly and can be a powerful trading signal for a
trend reversal. The patterns are formed when a price tests the same support or
resistance level three times and cannot break through.
The double bottom occurs when there are
two troughs at the same height, indicating that sellers are in a weaker
position than they were.
Cup and Handle
The cup and handle is a bullish
continuation pattern where an upward trend has paused but will continue when
the pattern is confirmed. The "cup" portion of the pattern should be
a "U" shape that resembles the rounding of a bowl rather than a
"V" shape with equal highs on both sides of the cup.
The "handle" forms on
the right side of the cup in the form of a short pullback that resembles a flag
or pennant chart pattern. Once the handle is complete, the stock may breakout
to new highs and resume its trend higher.
Symmetrical Triangles
Symmetrical triangles occur when two trend lines converge toward each other and signal only that a breakout is likely to occur—there is no upward or downward trend. The magnitude of the breakouts or breakdowns is typically the same as the height of the left vertical side of the triangle, as shown in the figure below.
Descending Triangles
The descending triangle is the opposite of the ascending triangle, indicating that demand is decreasing, and a descending upper trend line suggests a breakdown is likely to occur
Ascending Triangle
An ascending triangle is a continuation pattern marking a trend with a specific entry point, profit target, and stop loss level. The resistance line intersects the breakout line, pointing out the entry point. The ascending triangle is a bullish trading pattern.
Wedge
Wedges are continuation
patterns similar to pennants in that they are drawn using two converging
trendlines; however, a wedge is characterized by the fact that both trendlines
are moving in the same direction, either up or down.
A wedge angled down represents a pause
during an uptrend; a wedge angled up shows a temporary interruption during a
falling market. As with pennants and flags, volume typically tapers off during
pattern formation, only to increase once price breaks above or below the wedge
pattern.
Wedges
differ from triangles and pennants in that they reflect only upward and
downward price movements, so the wedge generally appears angled.
Flag
Flags are continuation patterns
constructed using two parallel trendlines that can slope up, down, or sideways
(horizontal). Generally, a flag with an upward slope (bullish) appears as a
pause in a down trending market; a flag with a downward bias (bearish) shows a
break during an up trending market. Typically, the flag's formation is
accompanied by declining volume, which recovers as price breaks out of the flag
formation.
Pennant
Pennants are continuation patterns drawn with
two trendlines that eventually converge. A key characteristic of pennants is
that the trendlines move in two directions—one will be a down trendline and the
other an up trendline. The figure below shows an example of a pennant. Often,
the volume will decrease during the formation of the pennant, followed by an
increase when the price eventually breaks out.
A bullish pennant is a pattern that indicates
an upward trending price—the flagpole is on the left of the pennant.
A bearish
pennant is a pattern that indicates a downward trend in prices. In a bearish
pattern, volume is falling, and a flagpole forms on the right side of the
pennant.
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