Candlestick formation · Bullish
What is it, in one line
A tall down candle, then several small ones, then a tall up candle — a trough between two towers.
Bullish · 5 candles · verdict: rule and thresholds below
A tall down candle, then several small ones, then a tall up candle — a trough between two towers. 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 tower top. A tall black body, three small bodies, and a tall white body of comparable size. The decline stops, the market goes quiet at the low, and a single bar takes the loss back.
The traditional claim
Read as a bottom, on the reading that the quiet bars are accumulation and the closing tower is the result.
How this detection is wrong
Same ATR framing as the tower top, and the same reason for testing the largest of the middle bodies rather than their average.
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 |
| minTallAtr | the tall bar, at least, in ATR | 0.8 |
| maxSmallAtr | the small bar, at most, in ATR | 0.35 |
| 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 Tower Bottom candlestick pattern?
The mirror of the tower top. A tall black body, three small bodies, and a tall white body of comparable size. The decline stops, the market goes quiet at the low, and a single bar takes the loss back. The detector also requires a prior downtrend, so the same shape in the wrong context is not counted.
Is the Tower Bottom bullish or bearish?
It is read as bullish. Read as a bottom, on the reading that the quiet bars are accumulation and the closing tower is the result.
When is a Tower Bottom not a Tower Bottom?
Same ATR framing as the tower top, and the same reason for testing the largest of the middle bodies rather than their average.
How is a Tower Bottom detected?
As an executable rule over open, high, low and close, with 5 named parameters — including bars of prior trend inspected 5, bars of ATR used to size everything below 14, the tall bar, at least, in ATR 0.8 — 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.
Tower Top: A tall up candle, then several small ones, then a tall down candle — a plateau between two towers.