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.

GraniteShares 2x Long RDDT Daily ETF (RDTL) had 90-Day Historical Volatility (Parkinson) of 1.0803 for 2025-08-13.

For much more extensive volatility insights, check out our new product VolVue:

Over 300 data fields encompassing historical volatility, implied volatility, and put-call ratios for multiple time frames
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Up to 20 years of data history
52-Week Rank and Percentile for all metrics and time frames

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Figures for 2025-08-13

Volatility Metrics
Historical Volatility (Close-to-Close)	1.2385
Historical Volatility (Parkinson)	1.0803
Implied Volatility (Calls)	--
Implied Volatility (Puts)	--
Implied Volatility (Mean)	--
Put-Call Implied Volatility Ratio	--
Implied Volatility Skew	--
Option Statistics
Put-Call Ratio (Volume)	1.9683
Put-Call Ratio (Open Interest)	1.1282