What is ta.highest() in Pine Script?

ta.highest(source, length) returns the maximum value of source over the most recent length bars, ignoring na values.

How do I find the highest close of the last 20 bars?

Use ta.highest(close, 20). For session or anchored windows, combine with different sources or logic as needed.

Yes—any numeric series works, including calculated indicators, not only OHLC fields.

UtilityPine Script v6

Highest Value

Highest value for a given number of bars back.

ta.highest(source, length) → series float

Parameter	Type	Description
source	series int/float	Series to scan.
length	series int	Lookback length.

Highest value in the series.

na values in the source series are ignored.

Pine Script v6 Example

//@version=6
indicator("ta.highest")
plot(ta.highest(high, 20), title="20-bar highest high")

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Skip the manual coding. Use Pineify's AI Coding Agent to generate Pine Script code using ta.highest() and other built-in functions instantly.

Learn how to use ta.lowest() in Pine Script. Find the lowest value over a lookback period.

Learn how to use ta.lowestbars() in Pine Script. Find how many bars ago the lowest value occurred.

Learn how to use ta.valuewhen() in Pine Script. Get the value of a series when a condition was true.

Learn how to use ta.barssince() in Pine Script. Count bars since a condition was last true.