AD

Summary

Chaikin Accumulation/Distribution Line, a cumulative volume-flow indicator. Sums a volume-weighted money-flow multiplier per bar to gauge buying vs. selling pressure. Rising line = accumulation (buying pressure); falling = distribution.

Formula

MFM = ((close-low) - (high-close)) / (high-low); AD_t = AD_{t-1} + MFM_t * volume_t (running sum, seeded at 0)

Inputs

• inHigh — High price of each bar
• inLow — Low price of each bar
• inClose — Close price of each bar
• inVolume — Volume of each bar

Outputs

• outReal — Cumulative A/D line value per bar

Properties

Numerical Stability: Path-Dependent

Display Flags
☐ Overlap Input
✅ Independent Y-Axis i
☐ Candlestick

Implementation

TA-Lib Definition: ad.c · ad.yaml

Native	File
C	ta_AD.c
Rust	ad.rs
Java	Core_AD.java

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

Aliases

Chaikin A/D Line, Accumulation/Distribution Line, Accumulation Distribution

See Also

ADOSC · OBV