Unique 3 River (CDLUNIQUE3RIVER)

Summary

A three-candle bullish reversal pattern: a long black candle, then a black harami candle that makes a lower low, then a small white candle. Signals a potential bullish reversal, ideally in a downtrend (trend not checked by the code). A hit (+100) marks a bullish reversal; significant in a downtrend, which the function does not verify.

Notes

Although classically a bullish reversal (and TA-Lib only emits +100), Bulkowski's testing found the opposite: it acts as a bearish continuation 60% of the time, ranking 60th of 103 patterns overall. (thepatternsite.com)

Inputs

inOpen — Open price of each bar
inHigh — High price of each bar
inLow — Low price of each bar
inClose — Close price of each bar

Outputs

outInteger — +100 when the pattern is present, 0 otherwise. Bullish-only: never emits -100

Output Values

Value	Meaning
0	No pattern
100	Unique 3 River detected — bullish reversal signal

Properties

Numerical Stability: Start-Independent


☐ Overlap Input
✅ Independent Y-Axis i
✅ Candlestick i
☐ Can Output NaN or ±Inf
☐ Identity at Period 1

Implementation

TA-Lib Definition: cdlunique3river.c · cdlunique3river.yaml

Native	File
C	`ta_CDLUNIQUE3RIVER.c`
Rust	`cdlunique3river.rs`
Java	`Core_CDLUNIQUE3RIVER.java`

TA-Lib is also available for Python, R and more using a wrapper.

Aliases

Unique 3 River, Unique Three River Bottom