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.

ProShares Ultra Semiconductors (USD) had 20-Day Historical Volatility (Parkinson) of 0.4315 for 2026-01-21.

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Figures for 2026-01-21

Volatility Metrics
Historical Volatility (Close-to-Close)	0.5659
Historical Volatility (Parkinson)	0.4315
Implied Volatility (Calls)	0.6605
Implied Volatility (Puts)	0.7762
Implied Volatility (Mean)	0.7183
Put-Call Implied Volatility Ratio	1.1751
Implied Volatility Skew	0.0296
Option Statistics
Put-Call Ratio (Volume)	0.0972
Put-Call Ratio (Open Interest)	0.4146