Historical Volatility (Parkinson) (90-Day)
Historical Volatility (Parkinson): The past volatility of the security over the selected time frame, calculated using the high and low prices on each trading day.
ROBO Global Robotics and Automation Index ETF (ROBO) had 90-Day Historical Volatility (Parkinson) of 0.1439 for 2026-01-16.
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