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VolumePine Script v6Built-in Variable

ta.iiiIntraday Intensity Index

Intraday Intensity Index. Measures the relationship between the close price and the high-low range, weighted by volume.

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Syntax

Syntax
ta.iii

Returns

series float

Code Examples

Pine Script v6 Example
//@version=6
indicator("Intraday Intensity Index")
plot(ta.iii, color=color.yellow)

// the same on pine
f_iii() =>
    (2 * close - high - low) / ((high - low) * volume)

plot(f_iii())

Trading Applications

Measure intraday buying/selling pressure

Identify accumulation and distribution patterns

Confirm breakouts with volume intensity

Use as a component in custom volume indicators

Related Functions

ta.obvta.accdist

Frequently Asked Questions

ta.iii is the Intraday Intensity Index series, relating where the close falls within the bar to volume, highlighting pressure on up-close vs down-close bars.

A common formulation weights the close position in the range: (2×close − high − low) divided by range and volume terms; Pine implements the official variant as ta.iii.

Use III with price action: sustained positive values on rallies or negative on declines can confirm direction; divergences vs price may warn of fading pressure.

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Learn how to use ta.mfi() in Pine Script. Syntax, parameters, code examples for the volume-weighted RSI indicator.

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ta.accdist - Accumulation/Distribution

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ta.pvt - Price-Volume Trend

Learn about ta.pvt built-in variable in Pine Script. Access Price-Volume Trend for percentage-weighted volume analysis.

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ta.wad - Williams A/D

Learn about ta.wad built-in variable in Pine Script. Access Williams Accumulation/Distribution for true range volume analysis.

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