Level 2 Patterns & indicators · Part 4/9
Continuation Chart Patterns
Most of the time markets are not moving, they are waiting. Continuation formations describe that waiting – and the moment it ends.
They all rest on the same process: compression turns into expansion. The range narrows until it does not. The direction of the ensuing break is considerably less predictable than the pattern names suggest.
Triangles
In an ascending triangle the highs stop at the same price repeatedly while the lows rise. Interpretation: supply sits at the upper edge and gets absorbed step by step, while buyers accept ever higher prices.
The descending triangle is the mirror image. When the horizontal support breaks, a fast move often follows – the stop orders clustered there trigger additional selling.
In a symmetrical triangle both boundaries converge. It is the most honest of the three because it suggests no direction: it says something is contracting, nothing more.
One practically relevant observation: breakouts in the final third of a triangle hold more often than those close to the apex. If price runs all the way into the apex, the formation usually dissolves rather than completing.
Flags and pennants
A flag consists of a steep move – the pole – and a narrow consolidation sloping slightly against it. It is the pattern with the clearest substantive argument: profit-taking meets continued demand without the move being given back.
The downside variant looks like a base and is not one. The difference is extent: a bounce recovering less than a third of the prior move is a pause; one recovering half or more is no longer a flag.
The pennant is the symmetrical version of a flag: no slope, but contraction from both sides. It typically lasts only a few periods. If the contraction drags on, it is a triangle – with a much weaker link to the trend.
Wedges
The rising wedge is the special case where rising prices signal weakness: both boundaries rise, the lower one more steeply, and each new wave is shorter. The break is predominantly downward.
The falling wedge works the other way round. What makes both readable is not the direction of the lines but the shrinking amplitude – the same quantity a volatility indicator measures.
Rectangle
A horizontal range with several tests on both edges. The practical advantage: a failed breakout is immediately obvious, because price simply drops back inside. Of all the formations, the rectangle provides the cleanest refutation levels.
Cup and handle
A rounded base followed by a short pullback just below the old high. The handle is where the last sellers exit. If it is deeper than roughly a third of the cup height it voids the formation – the recovery has been undone.
The shared warning
All these formations have fuzzy definitions. How shallow may a flag slope? How many touches does a triangle need? Where exactly does the boundary sit?
Every one of those freedoms is a degree of freedom – and degrees of freedom are the raw material of overfitted results. Anyone seriously testing a pattern must first define it tightly enough that a program can find it without judgement. That is where most pattern statistics fall apart, long before probabilities enter the picture.
Next
From shapes to numbers: moving averages as the first indicator.