A worked example that explains the rule, not a stock price. The circle marks the first close beyond the level. The blue line is the target. The orange line is the invalidation. Prices are in the right-hand column, and sessions sit under the volume bar.Hollow green candles closed above their open, and filled red candles closed below it.
Numbers in the example chart
From the same calculation that draws the shape and writes the "Measuring the target" section below.
Trigger level
$53.2 · at the close of session 64
Target
60.4$
Invalidation
51.0$
Pattern height
7.2$
Chart span
76 sessions
What it is
A flat, steady ceiling with lows rising toward it. A seller sells at one fixed price, and a buyer is willing to pay more each time · and the equation ends in favor of whoever raises their price.
When the trigger starts and when it fails
Signal
A close above horizontal resistance on high volume.
Horizontal resistanceA seller selling at one fixed price, touched at least twice.
Higher lowsBuyers pay more each time · the contest ends in favor of whoever raises their price.
BreakoutBest before two-thirds of the triangle's length · reaching the apex without a breakout drains its force.
Recognition rules
Horizontal resistance touched at least twice.
A rising support line touching successive higher lows.
The gap narrows as price nears the apex.
Volume shrinks, then jumps at the breakout.
The breakout is best when it happens before two-thirds of the triangle's length.
Measuring the target
The height of the triangle's base is added to the resistance level.
Where it fools you
If price reaches the triangle's apex without a breakout, the pattern loses its force · the energy was spent waiting. A breakout without volume often falls back below resistance within a few sessions.
Open the daily timeframe for any symbol and draw the pattern yourself. Your drawing is saved per symbol in your browser, and the terminal does not name or detect the pattern.
━ LevelHorizontal resistance
╱ TrendlineRising lows
⇕ MeasureTarget equals pattern height
We do not detect chart patterns with a numeric rule: telling them apart takes judgment on the chart. Candlestick patterns with a numeric rule are detected daily by the candlestick pattern scanner.
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