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.

International Business Machines Corporation (IBM) had 20-Day Put-Call Ratio (Volume) of 0.1989 for 2026-05-21.

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Figures for 2026-05-21

Volatility Metrics
Historical Volatility (Close-to-Close)	0.5628
Historical Volatility (Parkinson)	0.3334
Implied Volatility (Calls)	0.3740
Implied Volatility (Puts)	0.3973
Implied Volatility (Mean)	0.3856
Put-Call Implied Volatility Ratio	1.0624
Implied Volatility Skew	--
Option Statistics
Put-Call Ratio (Volume)	0.1989
Put-Call Ratio (Open Interest)	0.6933