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.

DNOW Inc. (DNOW) had 90-Day Historical Volatility (Parkinson) of 0.3481 for 2025-03-14.

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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 2025-03-14

Volatility Metrics
Historical Volatility (Close-to-Close)	0.5205
Historical Volatility (Parkinson)	0.3481
Implied Volatility (Calls)	0.3867
Implied Volatility (Puts)	0.3152
Implied Volatility (Mean)	0.3509
Put-Call Implied Volatility Ratio	0.8151
Implied Volatility Skew	0.0466
Option Statistics
Put-Call Ratio (Volume)	0.0000
Put-Call Ratio (Open Interest)	0.1331