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.

CrossingBridge Pre-Merger SPAC ETF (SPC) had 90-Day Historical Volatility (Parkinson) of 0.1118 for 2025-02-21.

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 2025-02-21

Volatility Metrics
Historical Volatility (Close-to-Close)	0.1043
Historical Volatility (Parkinson)	0.1118
Implied Volatility (Calls)	0.1408
Implied Volatility (Puts)	0.1930
Implied Volatility (Mean)	0.1669
Put-Call Implied Volatility Ratio	1.3705
Implied Volatility Skew	--
Option Statistics
Put-Call Ratio (Volume)	--
Put-Call Ratio (Open Interest)	--