Put-Call Ratio (Open Interest) (20-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.

Norfolk Southern Corporation (NSC) had 20-Day Put-Call Ratio (Open Interest) of 1.5533 for 2026-08-28.

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Figures for 2026-08-28

Volatility Metrics
Historical Volatility (Close-to-Close)	0.1529
Historical Volatility (Parkinson)	0.1575
Implied Volatility (Calls)	0.1875
Implied Volatility (Puts)	0.2084
Implied Volatility (Mean)	0.1979
Put-Call Implied Volatility Ratio	1.1115
Implied Volatility Skew	0.0111
Option Statistics
Put-Call Ratio (Volume)	0.0714
Put-Call Ratio (Open Interest)	1.5533