Morning Star (CDLMORNINGSTAR)

Summary

A three-candle bottom-reversal pattern: a long black candle, a small-bodied star gapping down, then a white candle closing well up into the first candle's body. Bullish reversal signal. A hit signals a bullish reversal (most meaningful after a downtrend, which the code does not check).

Notes

The gap-down is measured between the candles' real bodies, not between their high/low ranges.
A prior downtrend is not verified.
Bulkowski ranks the Morning Star unusually high — 6th of 103 for reversal rate (78%) and 12th of 103 for overall post-breakout performance — one of the few classic candle patterns whose textbook reputation his statistics confirm rather than debunk. (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 morning star is detected, 0 otherwise. Never negative (pattern is exclusively bullish)

Output Values

Value	Meaning
0	No pattern
100	Morning Star detected — bullish (bottom) reversal signal

Parameters

Parameter	Type	Default	Accepted values	Description
`optInPenetration`	real	0.3	≥ 0	Fraction of the 1st candle's body the 3rd close must exceed above the 1st close; larger = deeper penetration required

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: cdlmorningstar.c · cdlmorningstar.yaml

Native	File
C	`ta_CDLMORNINGSTAR.c`
Rust	`cdlmorningstar.rs`
Java	`Core_CDLMORNINGSTAR.java`

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

Aliases

Morning Star