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Momentum OscillatorsPine Script v6

ta.stoch()Stochastic Oscillator

Stochastic oscillator. It is calculated by a formula: 100 * (source - lowest(low, length)) / (highest(high, length) - lowest(low, length)).

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Syntax

Syntax
ta.stoch(source, high, low, length) → series float

Arguments

ParameterTypeDescription
sourceseries int/floatSeries compared to the range (commonly close).
highseries int/floatHigh series for the range calculation.
lowseries int/floatLow series for the range calculation.
lengthseries intLookback length for highest/lowest range.

Returns

Stochastic.

Remarks

None.

Code Examples

Pine Script v6 Example
//@version=6
indicator("ta.stoch")
plot(ta.stoch(close, high, low, 14))

Trading Applications

Identify overbought/oversold market conditions

Generate buy/sell signals with %K/%D crossovers

Detect bullish/bearish divergences

Combine with trend analysis for filtered entries

Related Functions

ta.rsita.cmo

Frequently Asked Questions

ta.stoch() returns the raw stochastic %K-style value for the chosen source within the high/low range over length bars, scaled to 0–100.

Use ta.stoch() (or ta.stoch(close, high, low, k)) for %K, then smooth it for %D (for example with ta.sma() or ta.ema()) using your preferred signal length.

Common defaults are about 80/20 or 70/30, but optimal levels vary by symbol and timeframe. Treat them as context, not automatic trade triggers.

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