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Volatility Ratio

By LuxAlgoFeb 6, 2026

Static chart image

Volatility Ratio reduces "was that bar unusual?" to a single dimensionless number. Its default mode implements the Volatility Ratio as Jack Schwager framed it (the current bar's true range over a trailing baseline, flagging wide-range bars with diamonds above a threshold), while a second mode divides short-lookback by long-lookback volatility, read around a dashed 1 line.

How to Trade the Volatility Ratio?

  • Wide-range event bar: a reading above the Event Threshold marks a bar that swallowed an unusually large share of recent movement, often news, breakouts, or capitulation. The ratio measures size only. The dashboard's close-in-range figure adds the directional hint.
  • Expansion above 1: in Short vs Long mode the market runs hotter than its own norm; the 1-line crossings are alerted both ways.
  • Contraction below 1: conditions cooling, where squeeze setups form.

Volatility Ratio Settings

  • Ratio Mode (default Wide-Range Bar (Schwager)): the event-bar construction, or Short vs Long Volatility.
  • Baseline Length (default 14): trailing window the bar is measured against, taken on the prior bar so a bar never inflates its own reference.
  • Baseline Type (default Average True Range): the window's ATR, or the gap-adjusted Window Span, which runs smaller and needs lower cutoffs.
  • Event Threshold (default 2): the wide-range cut, about twice the typical recent bar with the ATR baseline; a convention, not a law.
  • Mark Event Bars (default enabled): diamonds at the top of the pane.
  • Short Length (default 5) and Long Length (default 20): the fast and slow windows of the short-over-long form.
  • Volatility Basis (default ATR): ATR or Standard Deviation on both sides, with Stdev Source (default close) feeding the latter.
  • Show Dashboard (default enabled) and Gradient Fill (default enabled): the readout panel and fill from zero.

Frequently Asked Questions

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