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.

Tessera Defense and Homeland Security Inc. (HLSQ) had 20-Day Historical Volatility (Parkinson) of 1.6726 for 2026-11-02.

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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 2026-11-02

Volatility Metrics
Historical Volatility (Close-to-Close)	1.4137
Historical Volatility (Parkinson)	1.6726
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)	--