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.

Nordson Corporation (NDSN) had 20-Day Put-Call Ratio (Open Interest) of 0.1209 for 2026-07-17.

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Figures for 2026-07-17

Volatility Metrics
Historical Volatility (Close-to-Close)	0.2052
Historical Volatility (Parkinson)	0.2157
Implied Volatility (Calls)	0.2568
Implied Volatility (Puts)	0.2534
Implied Volatility (Mean)	0.2551
Put-Call Implied Volatility Ratio	0.9870
Implied Volatility Skew	0.1110
Option Statistics
Put-Call Ratio (Volume)	0.1555
Put-Call Ratio (Open Interest)	0.1209