Put-Call Ratio (Volume) (60-Day)

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

CSG Systems International, Inc. (CSGS) had 60-Day Put-Call Ratio (Volume) of 0.1667 for 2026-04-21.

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Figures for 2026-04-21

Volatility Metrics
Historical Volatility (Close-to-Close)	0.0336
Historical Volatility (Parkinson)	0.0322
Implied Volatility (Calls)	0.0520
Implied Volatility (Puts)	0.1000
Implied Volatility (Mean)	0.0760
Put-Call Implied Volatility Ratio	1.9249
Implied Volatility Skew	--
Option Statistics
Put-Call Ratio (Volume)	0.1667
Put-Call Ratio (Open Interest)	6.4559