Mat Hold (CDLMATHOLD)

Summary

A five-candle bullish continuation pattern: a long white candle, an upside real-body-gapped small black candle, two more small falling candles that hold within the first body, and a final white candle closing above the reaction days' highs. Signals continuation of the prior uptrend. Hit = bullish continuation of the existing uptrend.

Notes

The colors of the third and fourth (reaction) candles are not checked, although they are classically black.
The continuation reading assumes a prior uptrend, which is not verified.
Bulkowski's own dataset contains only 52 Mat Hold occurrences out of 4.7 million candle lines; he explicitly warns the 78% continuation rate he measured "will likely be wrong or at least subject to large change as additional samples become available." (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 bullish Mat Hold is detected, 0 otherwise. Never emits -100

Output Values

Value	Meaning
0	No pattern
100	Mat Hold detected — bullish continuation signal

Parameters

Parameter	Type	Default	Accepted values	Description
`optInPenetration`	real	0.5	≥ 0	Max fraction of the 1st white body the reaction days (3rd, 4th) may penetrate

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: cdlmathold.c · cdlmathold.yaml

Native	File
C	`ta_CDLMATHOLD.c`
Rust	`cdlmathold.rs`
Java	`Core_CDLMATHOLD.java`

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

Aliases

Mat Hold