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.

Alumis Inc. (ALMS) had 20-Day Put-Call Ratio (Volume) of 0.4671 for 2026-04-20.

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Figures for 2026-04-20

Volatility Metrics
Historical Volatility (Close-to-Close)	0.4687
Historical Volatility (Parkinson)	0.5620
Implied Volatility (Calls)	0.9275
Implied Volatility (Puts)	0.9894
Implied Volatility (Mean)	0.9585
Put-Call Implied Volatility Ratio	1.0667
Implied Volatility Skew	-0.0598
Option Statistics
Put-Call Ratio (Volume)	0.4671
Put-Call Ratio (Open Interest)	0.6985