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Home / Technical Analysis / Candlestick patterns / Downside Gap Side-by-Side White Lines

Candlestick formation · Bearish

Downside Gap Side-by-Side White Lines

What is it, in one line

A gap down followed by two green bodies of similar size.

Bearish · 3 candles · verdict: rule and thresholds below

Bearish 3 candles Traditional claim
Downside Gap Side-by-Side White Lines — 13 price bars ending on the bar where the Downside Gap Side-by-Side White Lines completes. The last 3 bars are the formation, shaded; the bars before them are the prior context the rule requires.
Verified example · fires the Downside Gap Side-by-Side White Lines rule · not a schematic

What has to be true

A gap down followed by two green bodies of similar size. The engine checks the formation as an executable condition over open, high, low and close, with a trend filter applied before the count is kept.

candles = 3 candles
direction = Bearish
trend filter = prior advance
forward window = 10 bars

Method

What the engine tests

The same two side-by-side up candles, but sitting below a downward gap instead of above an upward one — which classically reverses the reading from bullish to bearish.

Family
Candlestick
Bars
3 bars
Direction
Bearish
Class
Continuation
Prior context
Downtrend
TA-Lib
CDLGAPSIDESIDEWHITE

The traditional claim

Traditionally read as a bearish continuation: the two up candles are a pause inside a decline, not a recovery, because the gap above them was never filled.

How this detection is wrong

Identical candles to the upside version. Only the direction of the gap differs — which makes this pair the clearest test available of whether gap context changes anything.

The thresholds the detector uses

Published so the count can be reproduced. Every figure below is a parameter of the rule, not a preference: change one and the occurrence count changes with it.

Detection parameters for the Downside Gap Side-by-Side White Lines
ParameterMeaningDefault
trendPeriodbars of prior trend inspected5
maxPriorSlopeprior slope must be below-1
minGapAtrgap between bars, at least, in ATR0
matchTolAtrhow closely two levels must match, in ATR0.08
minBodyAtrbody, at least, in ATR0.3
atrPeriodbars of ATR used to size everything below14
strict
Tighter thresholds. Fewer detections, each a cleaner example.
maxPriorSlope -1.5
loose
Wider thresholds. More detections, more marginal ones.
maxPriorSlope -0.5
no-context
The prior-trend requirement removed, so the shape alone fires.
maxPriorSlope not applied
no-gap
minGapAtr not applied
tight
matchTolAtr 0.04

Easily mistaken for

These share enough geometry that a detector can return more than one of them on the same bar. The engine reports every match rather than picking a winner.

Every pair on the site that can be mistaken for another, and what separates each: the look-alikes index.

Common questions

What is a Downside Gap Side-by-Side White Lines candlestick pattern?

The same two side-by-side up candles, but sitting below a downward gap instead of above an upward one — which classically reverses the reading from bullish to bearish. The detector also requires a prior downtrend, so the same shape in the wrong context is not counted.

Is the Downside Gap Side-by-Side White Lines bullish or bearish?

It is read as bearish. Traditionally read as a bearish continuation: the two up candles are a pause inside a decline, not a recovery, because the gap above them was never filled.

When is a Downside Gap Side-by-Side White Lines not a Downside Gap Side-by-Side White Lines?

Identical candles to the upside version. Only the direction of the gap differs — which makes this pair the clearest test available of whether gap context changes anything.

How is a Downside Gap Side-by-Side White Lines detected?

As an executable rule over open, high, low and close, with 6 named parameters — including bars of prior trend inspected 5, prior slope must be below -1, gap between bars, at least, in ATR 0 — all published on this page so the count can be reproduced. Strict and loose variants are defined as well, so the sensitivity of the count to those thresholds is visible rather than assumed.

Measurement pending re-run

No hit rate is published here yet. The run that would supply one was computed on engine ca6d9e36c81c; the engine is now cfb08765de7c. Its candlestick rows included the still-forming bar, and it predates the chart formations entirely, so those figures have been withdrawn rather than published with a caveat. The definition above is unaffected: it is what the detector tests, and no re-run changes it.

How this was measured →

Other 3-candle formations

All 107 →
Bearish Island Reversal A candle isolated by a gap up before it and a gap down after it, leaving it stranded at the high.
Bullish Island Reversal A candle isolated by a gap down before it and a gap up after it, leaving it stranded at the low.
Collapsing Doji Star A white candle, then a doji gapping down, then a black candle gapping down again.
Two Black Gapping A gap down followed by two black candles that fail to close it.

Size a trade on this setup before you take it.