Put-Call Ratio (Volume) (20-Day)

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

Amkor Technology, Inc. (AMKR) had 20-Day Put-Call Ratio (Volume) of 1.5232 for 2026-10-16.

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Figures for 2026-10-16

Volatility Metrics
Historical Volatility (Close-to-Close)	0.4561
Historical Volatility (Parkinson)	0.4282
Implied Volatility (Calls)	0.8458
Implied Volatility (Puts)	0.8685
Implied Volatility (Mean)	0.8571
Put-Call Implied Volatility Ratio	1.0268
Implied Volatility Skew	0.0438
Option Statistics
Put-Call Ratio (Volume)	1.5232
Put-Call Ratio (Open Interest)	4.0378