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.

3M Company (MMM) had 30-Day Put-Call Ratio (Open Interest) of 0.4796 for 2026-07-20.

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Figures for 2026-07-20

Volatility Metrics
Historical Volatility (Close-to-Close)	0.2185
Historical Volatility (Parkinson)	0.2311
Implied Volatility (Calls)	0.3814
Implied Volatility (Puts)	0.3338
Implied Volatility (Mean)	0.3576
Put-Call Implied Volatility Ratio	0.8751
Implied Volatility Skew	0.0797
Option Statistics
Put-Call Ratio (Volume)	0.1981
Put-Call Ratio (Open Interest)	0.4796