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.

STMicroelectronics N.V. (STM) had 30-Day Put-Call Ratio (Volume) of 1.5211 for 2026-10-05.

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Figures for 2026-10-05

Volatility Metrics
Historical Volatility (Close-to-Close)	0.4401
Historical Volatility (Parkinson)	0.2338
Implied Volatility (Calls)	0.6211
Implied Volatility (Puts)	0.6447
Implied Volatility (Mean)	0.6329
Put-Call Implied Volatility Ratio	1.0381
Implied Volatility Skew	0.0033
Option Statistics
Put-Call Ratio (Volume)	1.5211
Put-Call Ratio (Open Interest)	0.1706