Put-Call Ratio (Open Interest) (20-Day)

Put-Call Ratio (Open Interest): The ratio of outstanding put contracts to outstanding call contracts at the close of the trading day, for options with the relevant expiration date.

Banco Santander, S.A. (SAN) had 20-Day Put-Call Ratio (Open Interest) of 0.5804 for 2026-04-06.

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Figures for 2026-04-06

Volatility Metrics
Historical Volatility (Close-to-Close)	0.4860
Historical Volatility (Parkinson)	0.2802
Implied Volatility (Calls)	0.4644
Implied Volatility (Puts)	0.4769
Implied Volatility (Mean)	0.4707
Put-Call Implied Volatility Ratio	1.0270
Implied Volatility Skew	--
Option Statistics
Put-Call Ratio (Volume)	1.2759
Put-Call Ratio (Open Interest)	0.5804