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.

GraniteShares YieldBoost AMZN ETF (AZYY) had 20-Day Historical Volatility (Parkinson) of 0.0988 for 2025-12-26.

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
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Figures for 2025-12-26

Volatility Metrics
Historical Volatility (Close-to-Close)	0.2221
Historical Volatility (Parkinson)	0.0988
Implied Volatility (Calls)	0.4642
Implied Volatility (Puts)	0.6363
Implied Volatility (Mean)	0.5502
Put-Call Implied Volatility Ratio	1.3707
Implied Volatility Skew	--
Option Statistics
Put-Call Ratio (Volume)	--
Put-Call Ratio (Open Interest)	--