Put-Call Ratio (Volume) (150-Day)

Put-Call Ratio (Volume): The ratio of puts traded to calls traded, for options with the relevant expiration date.

Banco Santander, S.A. (SAN) had 150-Day Put-Call Ratio (Volume) of 20.6250 for 2026-05-21.

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Figures for 2026-05-21

Volatility Metrics
Historical Volatility (Close-to-Close)	0.4034
Historical Volatility (Parkinson)	0.2507
Implied Volatility (Calls)	0.3636
Implied Volatility (Puts)	0.3802
Implied Volatility (Mean)	0.3719
Put-Call Implied Volatility Ratio	1.0454
Implied Volatility Skew	-0.0501
Option Statistics
Put-Call Ratio (Volume)	20.6250
Put-Call Ratio (Open Interest)	0.4885