Put-Call Ratio (Open Interest) (30-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.

Arthur J. Gallagher & Co. (AJG) had 30-Day Put-Call Ratio (Open Interest) of 1.6365 for 2026-10-16.

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Figures for 2026-10-16

Volatility Metrics
Historical Volatility (Close-to-Close)	0.2933
Historical Volatility (Parkinson)	0.2477
Implied Volatility (Calls)	0.3341
Implied Volatility (Puts)	0.3785
Implied Volatility (Mean)	0.3563
Put-Call Implied Volatility Ratio	1.1327
Implied Volatility Skew	-0.0001
Option Statistics
Put-Call Ratio (Volume)	0.7698
Put-Call Ratio (Open Interest)	1.6365