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.

GRAIL, Inc. (GRAL) had 180-Day Put-Call Ratio (Volume) of 2.5000 for 2026-04-21.

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Figures for 2026-04-21

Volatility Metrics
Historical Volatility (Close-to-Close)	1.3183
Historical Volatility (Parkinson)	0.7999
Implied Volatility (Calls)	0.8997
Implied Volatility (Puts)	0.9233
Implied Volatility (Mean)	0.9115
Put-Call Implied Volatility Ratio	1.0262
Implied Volatility Skew	0.0047
Option Statistics
Put-Call Ratio (Volume)	2.5000
Put-Call Ratio (Open Interest)	0.5742