Inverted Hammer (CDLINVERTEDHAMMER)

Summary

Single-candle pattern: a small real body with a long upper shadow and little-to-no lower shadow that gaps down from the prior candle. A hit flags a potential bullish reversal.

Notes

Does not verify the preceding downtrend that the pattern classically assumes; it only checks the gap down from the immediately preceding candle.
Despite the bullish-reversal label, Bulkowski's testing found this actually behaves as a bearish continuation 65% of the time — yet its overall post-breakout performance rank (6th of 103) is among the best of all candlestick patterns he studied. (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 inverted hammer is detected, 0 otherwise. Never emits -100; the pattern is always bullish

Output Values

Value	Meaning
0	No pattern
100	Inverted Hammer detected — a bullish reversal signal that classically assumes a preceding 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

Implementation

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

Native	File
C	`ta_CDLINVERTEDHAMMER.c`
Rust	`cdlinvertedhammer.rs`
Java	`Core_CDLINVERTEDHAMMER.java`

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

Aliases

Inverted Hammer