Put-Call Ratio (Volume) (120-Day)

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

Westlake Corporation (WLK) had 120-Day Put-Call Ratio (Volume) of 0.0000 for 2026-01-16.

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Figures for 2026-01-16

Volatility Metrics
Historical Volatility (Close-to-Close)	0.4337
Historical Volatility (Parkinson)	0.4028
Implied Volatility (Calls)	0.5456
Implied Volatility (Puts)	0.5320
Implied Volatility (Mean)	0.5388
Put-Call Implied Volatility Ratio	0.9751
Implied Volatility Skew	0.0475
Option Statistics
Put-Call Ratio (Volume)	0.0000
Put-Call Ratio (Open Interest)	0.6684