Garman-Klass Volatility
Garman-Klass volatility: an estimate from each bar's open, high, low and close over the window, annualised in percent.
How to read it
- Higher values mean larger price swings; lower values a calmer market.
- Rising volatility from low levels often comes with breakouts.
- Uses the full bar, so it is more efficient than close-to-close volatility.
Key settings
- Window 20 bars.
- Annualise on (365-day year); off = per bar, in percent.
Good to know
- Drawn in its own pane below the chart.