Put-Call Ratio (Volume) (30-Day)

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

PTC Therapeutics, Inc. (PTCT) had 30-Day Put-Call Ratio (Volume) of 0.3333 for 2025-05-30.

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Figures for 2025-05-30

Volatility Metrics
Historical Volatility (Close-to-Close)	1.0080
Historical Volatility (Parkinson)	0.5204
Implied Volatility (Calls)	0.4619
Implied Volatility (Puts)	0.4542
Implied Volatility (Mean)	0.4581
Put-Call Implied Volatility Ratio	0.9832
Implied Volatility Skew	0.0884
Option Statistics
Put-Call Ratio (Volume)	0.3333
Put-Call Ratio (Open Interest)	1.6010