Put-Call Ratio (Volume) (180-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 180-Day Put-Call Ratio (Volume) of 2.3074 for 2026-07-20.

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Figures for 2026-07-20

Volatility Metrics
Historical Volatility (Close-to-Close)	0.7204
Historical Volatility (Parkinson)	0.3917
Implied Volatility (Calls)	0.8700
Implied Volatility (Puts)	0.8424
Implied Volatility (Mean)	0.8562
Put-Call Implied Volatility Ratio	0.9682
Implied Volatility Skew	0.0060
Option Statistics
Put-Call Ratio (Volume)	2.3074
Put-Call Ratio (Open Interest)	0.5065