Candlestick formation · Bullish
What is it, in one line
A full body with no wicks. Opens at the low, closes at the high.
Bullish · 1 candle · verdict: rule and thresholds below
A full body with no wicks. Opens at the low, closes at the high. 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.
Method
An up candle whose real body fills nearly the whole range: it opens at or near the low and closes at or near the high. The absence of wicks is the definition — a long body with long wicks is not a marubozu.
The traditional claim
Traditionally read as strong one-directional conviction, and as continuation rather than reversal.
How this detection is wrong
The body floor in ATR terms matters as much as the body ratio: a tiny candle can be 95% body and mean nothing. Both constraints are parameters, and the difference they make is measurable.
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.
| Parameter | Meaning | Default |
|---|---|---|
| minBodyPct | body, at least, as a share of the range | 0.9 |
| minBodyAtr | body, at least, in ATR | 0.6 |
| atrPeriod | bars of ATR used to size everything below | 14 |
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.
An up candle whose real body fills nearly the whole range: it opens at or near the low and closes at or near the high. The absence of wicks is the definition — a long body with long wicks is not a marubozu.
It is read as bullish. Traditionally read as strong one-directional conviction, and as continuation rather than reversal.
The body floor in ATR terms matters as much as the body ratio: a tiny candle can be 95% body and mean nothing. Both constraints are parameters, and the difference they make is measurable.
As an executable rule over open, high, low and close, with 3 named parameters — including body, at least, as a share of the range 0.9, body, at least, in ATR 0.6, bars of ATR used to size everything below 14 — 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.
This formation has a mirror
Its mirror is the same construction inverted, read in the opposite direction. Everything the two rules test is the same except the sign, so the thresholds on this page apply equally to both — and a result measured for one says nothing about the other until the other is measured too.
Bearish Marubozu: A long down candle that is nearly all body, with almost no wicks.