Historical Volatility (Parkinson) (150-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.

Invesco S&P MidCap 400 Pure Growth ETF (RFG) had 150-Day Historical Volatility (Parkinson) of 0.1451 for 2026-06-03.

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Figures for 2026-06-03

Volatility Metrics
Historical Volatility (Close-to-Close)	0.2199
Historical Volatility (Parkinson)	0.1451
Implied Volatility (Calls)	0.1285
Implied Volatility (Puts)	0.3889
Implied Volatility (Mean)	0.2587
Put-Call Implied Volatility Ratio	3.0255
Implied Volatility Skew	--
Option Statistics
Put-Call Ratio (Volume)	--
Put-Call Ratio (Open Interest)	--