Put-Call Ratio (Volume) (20-Day)

Put-Call Ratio (Volume): The ratio of puts traded to calls traded, for options with the relevant expiration date.

National Grid Transco, PLC (NGG) had 20-Day Put-Call Ratio (Volume) of 82.7857 for 2026-07-20.

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Figures for 2026-07-20

Volatility Metrics
Historical Volatility (Close-to-Close)	0.2613
Historical Volatility (Parkinson)	0.1208
Implied Volatility (Calls)	0.2339
Implied Volatility (Puts)	0.2345
Implied Volatility (Mean)	0.2342
Put-Call Implied Volatility Ratio	1.0027
Implied Volatility Skew	--
Option Statistics
Put-Call Ratio (Volume)	82.7857
Put-Call Ratio (Open Interest)	0.8755