Put-Call Ratio (Open Interest) (120-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.

Bank Of Montreal (BMO) had 120-Day Put-Call Ratio (Open Interest) of 0.7708 for 2025-12-17.

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Figures for 2025-12-17

Volatility Metrics
Historical Volatility (Close-to-Close)	0.1816
Historical Volatility (Parkinson)	0.1581
Implied Volatility (Calls)	0.1825
Implied Volatility (Puts)	0.1973
Implied Volatility (Mean)	0.1899
Put-Call Implied Volatility Ratio	1.0812
Implied Volatility Skew	0.0479
Option Statistics
Put-Call Ratio (Volume)	0.5233
Put-Call Ratio (Open Interest)	0.7708