Historical Volatility (Parkinson) (30-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.

ProShares S&P Kensho Cleantech ETF (CTEX) had 30-Day Historical Volatility (Parkinson) of 0.0890 for 2025-06-13.

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Figures for 2025-06-13

Volatility Metrics
Historical Volatility (Close-to-Close)	0.3206
Historical Volatility (Parkinson)	0.0890
Implied Volatility (Calls)	0.4879
Implied Volatility (Puts)	0.4360
Implied Volatility (Mean)	0.4620
Put-Call Implied Volatility Ratio	0.8935
Implied Volatility Skew	--
Option Statistics
Put-Call Ratio (Volume)	--
Put-Call Ratio (Open Interest)	--