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.

Canadian National Railway Company (CNI) had 20-Day Put-Call Ratio (Volume) of 1.0127 for 2026-04-17.

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Figures for 2026-04-17

Volatility Metrics
Historical Volatility (Close-to-Close)	0.1663
Historical Volatility (Parkinson)	0.1718
Implied Volatility (Calls)	0.2318
Implied Volatility (Puts)	0.2378
Implied Volatility (Mean)	0.2348
Put-Call Implied Volatility Ratio	1.0255
Implied Volatility Skew	0.0478
Option Statistics
Put-Call Ratio (Volume)	1.0127
Put-Call Ratio (Open Interest)	0.4990