Put-Call Ratio (Open Interest) (30-Day)

Put-Call Ratio (Open Interest): The ratio of outstanding put contracts to outstanding call contracts at the close of the trading day, for options with the relevant expiration date.

Syndax Pharmaceuticals, Inc. (SNDX) had 30-Day Put-Call Ratio (Open Interest) of 0.2586 for 2026-10-16.

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Figures for 2026-10-16

Volatility Metrics
Historical Volatility (Close-to-Close)	0.6761
Historical Volatility (Parkinson)	0.4797
Implied Volatility (Calls)	0.7922
Implied Volatility (Puts)	0.8316
Implied Volatility (Mean)	0.8119
Put-Call Implied Volatility Ratio	1.0498
Implied Volatility Skew	0.0523
Option Statistics
Put-Call Ratio (Volume)	0.9677
Put-Call Ratio (Open Interest)	0.2586