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.

Schwab Fundamental International Small Company Index ETF (FNDC) had 30-Day Historical Volatility (Parkinson) of 0.0458 for 2026-01-20.

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Figures for 2026-01-20

Volatility Metrics
Historical Volatility (Close-to-Close)	0.0820
Historical Volatility (Parkinson)	0.0458
Implied Volatility (Calls)	0.1708
Implied Volatility (Puts)	0.1876
Implied Volatility (Mean)	0.1792
Put-Call Implied Volatility Ratio	1.0986
Implied Volatility Skew	--
Option Statistics
Put-Call Ratio (Volume)	--
Put-Call Ratio (Open Interest)	--