How wildly price moved, annualised, in percent.
The spread of the log returns over n candles, scaled to a year. It is the same number options traders compare against implied volatility.
Worked out by the same code the builder uses, on stored daily candles. Move a setting and the line moves with it. This is what happened, not what will happen.
Gate: Historical volatility(20) is above 40.
It says how big the moves were, never in which direction. Rising volatility accompanies both crashes and rallies.
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