Node reference
Standard Deviation
Rolling volatility — how spread out recent values are.
Rev. 2026.06
Standard Deviationindicator
InputsOutputsStandard Deviation
Source
source · number
Stdev
main · number
Configure
- period
- — Lookback length, in bars
- default 20
- range 1–500
What it does
Measures the dispersion (σ) of the source over the lookback. Higher = more volatile.
What happens
Recomputed once per candle from its wired source, incrementally (constant work per bar). It emits no value until the warmup period has passed; after that it produces a value every bar.
When to use
Volatility gating, or building your own bands around a moving average.
Gotchas
- Units match the source, so it isn't directly comparable across instruments.