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
$105.6 · at the close of session 50
Target
89.6$
Invalidation
117.6$
Chart span
64 sessions
What it is
A higher high than the previous one, then a drop that breaks the last higher low in the uptrend, then a bounce back to the old high's level where it is rejected.
Its second English name (Over-and-Under) describes it: price pushes above the high, then falls below the low, so the structure flips before the reversal shows in price.
When the trigger starts and when it fails
Signal
A close back below the high level B after the bounce F touches it.
Higher high DThe uptrend makes a high above B · nothing warns yet, because this is how an uptrend behaves.
Break of structureA drop that closes below C · the first lower low. This is where the read changes: the trend has lost its first condition, higher lows.
Bounce to the B levelA return to the old high on lower volume · anyone who bought at B sees a chance to exit at breakeven and sells.
RejectionA close back below the B level after touching it. Before that there is no pattern, and invalidation is above D because moving past it makes the structure bullish again.
Recognition rules
An uptrend with higher highs and higher lows: the low C is above A, and the high D is above B.
A drop from D closes below the low C. This is the break of structure (Break of Structure): the first lower low in an uptrend.
A bounce from the low E reaches the high level B almost exactly (within 15% of the distance between the high B and the low C) and stays below D.
The level B is the "Quasimodo level": it was resistance that price crossed on the way up, and a return to it tests those who bought there.
Volume rises with the break of C and fades in the bounce back to F.
Measuring the target
The first target is the low E that produced the break of structure. In the example price is rejected at the Quasimodo level near $105.6, so the target is $89.6, and invalidation is a close above the high D at $117.6.
Where it fools you
Calling it before price falls below the low C: without a lower low there is no change in structure, and selling at the B level is selling a pullback inside an uptrend.
The level B is a zone, not a precise line: price may poke through slightly before it is rejected, so the call depends on a close back below it, not on a first touch.
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.
━ LevelQuasimodo level and break of structure
⇕ 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.
The mirror image: the bullish Quasimodo
The same pattern turned upside down, with the same rules in the opposite direction: what was a top becomes a bottom, and the trigger, target and invalidation all flip direction.
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