Historical Volatility (Parkinson) (150-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.
First Trust NASDAQ Artificial Intelligence and Robotics ETF (ROBT) had 150-Day Historical Volatility (Parkinson) of 0.1691 for 2026-01-20.
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