Historical Volatility (Parkinson) (180-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 Small Cap Growth AlphaDEX ETF (FYC) had 180-Day Historical Volatility (Parkinson) of 0.1626 for 2026-01-20.
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