Put-Call Ratio (Open Interest) (60-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.

First Interstate BancSystem, Inc. (FIBK) had 60-Day Put-Call Ratio (Open Interest) of 0.1330 for 2026-04-21.

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Figures for 2026-04-21

Volatility Metrics
Historical Volatility (Close-to-Close)	0.2799
Historical Volatility (Parkinson)	0.2742
Implied Volatility (Calls)	0.3965
Implied Volatility (Puts)	0.3486
Implied Volatility (Mean)	0.3726
Put-Call Implied Volatility Ratio	0.8791
Implied Volatility Skew	0.1132
Option Statistics
Put-Call Ratio (Volume)	0.0000
Put-Call Ratio (Open Interest)	0.1330