Historical Volatility (Parkinson) (20-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 Bloomberg Nuclear Power ETF (RCTR) had 20-Day Historical Volatility (Parkinson) of 0.1817 for 2025-12-22.

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Over 300 data fields encompassing historical volatility, implied volatility, and put-call ratios for multiple time frames
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Figures for 2025-12-22

Volatility Metrics
Historical Volatility (Close-to-Close)	0.2712
Historical Volatility (Parkinson)	0.1817
Implied Volatility (Calls)	--
Implied Volatility (Puts)	--
Implied Volatility (Mean)	--
Put-Call Implied Volatility Ratio	--
Implied Volatility Skew	--
Option Statistics
Put-Call Ratio (Volume)	--
Put-Call Ratio (Open Interest)	--