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.

Yext (YEXT) had 20-Day Historical Volatility (Parkinson) of 0.3496 for 2025-05-23.

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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 2025-05-23

Volatility Metrics
Historical Volatility (Close-to-Close)	0.2238
Historical Volatility (Parkinson)	0.3496
Implied Volatility (Calls)	0.6772
Implied Volatility (Puts)	0.6044
Implied Volatility (Mean)	0.6408
Put-Call Implied Volatility Ratio	0.8925
Implied Volatility Skew	--
Option Statistics
Put-Call Ratio (Volume)	5036.7500
Put-Call Ratio (Open Interest)	25.3296