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.

GRAIL, Inc. (GRAL) had 20-Day Put-Call Ratio (Volume) of 1.0283 for 2026-01-16.

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Figures for 2026-01-16

Volatility Metrics
Historical Volatility (Close-to-Close)	0.7667
Historical Volatility (Parkinson)	0.6858
Implied Volatility (Calls)	0.8031
Implied Volatility (Puts)	0.7937
Implied Volatility (Mean)	0.7984
Put-Call Implied Volatility Ratio	0.9883
Implied Volatility Skew	0.0294
Option Statistics
Put-Call Ratio (Volume)	1.0283
Put-Call Ratio (Open Interest)	2.4335