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Volatility
Historical Volatility
HVOLComputes the annualized standard deviation of daily log returns over N periods, expressed as a percentage. It measures how much the asset actually moved—as opposed to implied volatility, which reflects market expectations.
Tips
Compare HVOL to implied volatility (options pricing): when HVOL < IV, options are expensive; when HVOL > IV, options are cheap
A rising HVOL during a breakout confirms the move has force; a breakout with declining HVOL is often a trap
Parameters
Period
2 - 100