Put-Call Ratio (Volume) (90-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 90-Day Put-Call Ratio (Volume) of 1.6971 for 2026-07-21.

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Figures for 2026-07-21

Volatility Metrics
Historical Volatility (Close-to-Close)	0.2481
Historical Volatility (Parkinson)	0.1946
Implied Volatility (Calls)	0.2384
Implied Volatility (Puts)	0.2248
Implied Volatility (Mean)	0.2316
Put-Call Implied Volatility Ratio	0.9429
Implied Volatility Skew	0.0130
Option Statistics
Put-Call Ratio (Volume)	1.6971
Put-Call Ratio (Open Interest)	0.1473