Three Stars In The South (CDL3STARSINSOUTH)

Summary

A three-candle bullish reversal pattern of three consecutive black candles that progressively shrink and stabilize: a long black candle with a long lower shadow, a smaller black candle probing lower, then a small black marubozu contained within the second candle's range. A hit signals a bullish reversal; it is meaningful in a downtrend, which the function does not verify.

Notes

Does not verify the prior downtrend the pattern classically assumes for significance.
Thomas Bulkowski's statistical study found this has the best reversal rate of the 103 candlestick patterns he tracked (86% bullish reversal) — but that rests on just 9 occurrences in 4.7 million candle lines, and its overall post-breakout performance ranks dead last, 103rd of 103. (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 on the bar where the pattern completes (always bullish), 0 otherwise. Never emits -100

Output Values

How to read these values from the output's flags: rW7.

Value	Meaning
0	No pattern
100	Three Stars In The South detected — a bullish bottom-reversal signal, most meaningful after a downtrend (unverified by the function)

Properties

Numerical Stability: Start-Independent


☐ Overlap Input
✅ Independent Y-Axis i
✅ Candlestick i
☐ Can Output NaN or ±Inf
☐ Identity at Period 1
☐ Display Shift
☐ Uses Transcendental
☐ Input Must Be Positive

Implementation

TA-Lib Definition: cdl3starsinsouth.c · cdl3starsinsouth.yaml

Native	File
C	`ta_CDL3STARSINSOUTH.c`
Rust	`cdl3starsinsouth.rs`
Java	`Core_CDL3STARSINSOUTH.java`
C#	`Core_CDL3STARSINSOUTH.cs`

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

Aliases

Three Stars In The South