Put-Call Ratio (Open Interest) (20-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.

Kodiak Sciences Inc. (KOD) had 20-Day Put-Call Ratio (Open Interest) of 1.2712 for 2026-09-01.

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Figures for 2026-09-01

Volatility Metrics
Historical Volatility (Close-to-Close)	0.5173
Historical Volatility (Parkinson)	0.6976
Implied Volatility (Calls)	1.0119
Implied Volatility (Puts)	0.8945
Implied Volatility (Mean)	0.9532
Put-Call Implied Volatility Ratio	0.8839
Implied Volatility Skew	0.2021
Option Statistics
Put-Call Ratio (Volume)	0.3228
Put-Call Ratio (Open Interest)	1.2712