Candlestick formation · Bullish
What is it, in one line
A doji occurring during a decline, where its indecision counts against the trend.
Bullish · 1 candle · verdict: rule and thresholds below
A doji occurring during a decline, where its indecision counts against the trend. 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
The mirror of the northern doji: an open and close effectively equal, appearing after a fall. Classically read as the weaker of the pair, on the argument that a market can fall of its own weight while a rise needs buying.
The traditional claim
Read as a possible bottom warning, and traditionally given less weight than the northern doji.
How this detection is wrong
Same partition warning as the northern doji: these are `doji` bars split by trend, not additional observations.
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 |
|---|---|---|
| trendPeriod | bars of prior trend inspected | 5 |
| atrPeriod | bars of ATR used to size everything below | 14 |
| maxDojiPct | body small enough to count as a doji | 0.05 |
| maxPriorSlope | prior slope must be below | -0.5 |
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.
What is a Southern Doji candlestick pattern?
The mirror of the northern doji: an open and close effectively equal, appearing after a fall. Classically read as the weaker of the pair, on the argument that a market can fall of its own weight while a rise needs buying. The detector also requires a prior downtrend, so the same shape in the wrong context is not counted.
Is the Southern Doji bullish or bearish?
It is read as bullish. Read as a possible bottom warning, and traditionally given less weight than the northern doji.
When is a Southern Doji not a Southern Doji?
Same partition warning as the northern doji: these are `doji` bars split by trend, not additional observations.
How is a Southern Doji detected?
As an executable rule over open, high, low and close, with 4 named parameters — including bars of prior trend inspected 5, bars of ATR used to size everything below 14, body small enough to count as a doji 0.05 — 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.
Same shape, opposite reading
The shapes are close, and the prior trend is what decides which one fired: this rule requires a preceding downtrend, its mirror a preceding uptrend.
Northern Doji: A doji occurring during an advance, where its indecision counts against the trend.