Put-Call Ratio (Open Interest) (180-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.

Northrop Grumman Corporation (NOC) had 180-Day Put-Call Ratio (Open Interest) of 2.8648 for 2026-09-25.

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Figures for 2026-09-25

Volatility Metrics
Historical Volatility (Close-to-Close)	0.2728
Historical Volatility (Parkinson)	0.2460
Implied Volatility (Calls)	0.2947
Implied Volatility (Puts)	0.2915
Implied Volatility (Mean)	0.2931
Put-Call Implied Volatility Ratio	0.9890
Implied Volatility Skew	0.0027
Option Statistics
Put-Call Ratio (Volume)	0.0541
Put-Call Ratio (Open Interest)	2.8648