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.

United Microelectronics Corporation (UMC) had 30-Day Put-Call Ratio (Volume) of 0.6164 for 2026-07-22.

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Figures for 2026-07-22

Volatility Metrics
Historical Volatility (Close-to-Close)	0.8195
Historical Volatility (Parkinson)	0.4936
Implied Volatility (Calls)	0.9644
Implied Volatility (Puts)	0.9411
Implied Volatility (Mean)	0.9528
Put-Call Implied Volatility Ratio	0.9759
Implied Volatility Skew	0.0049
Option Statistics
Put-Call Ratio (Volume)	0.6164
Put-Call Ratio (Open Interest)	0.2053