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.

CareDx, Inc. (CDNA) had 20-Day Put-Call Ratio (Open Interest) of 0.6853 for 2026-09-04.

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Figures for 2026-09-04

Volatility Metrics
Historical Volatility (Close-to-Close)	0.4339
Historical Volatility (Parkinson)	0.5018
Implied Volatility (Calls)	0.4188
Implied Volatility (Puts)	0.4629
Implied Volatility (Mean)	0.4408
Put-Call Implied Volatility Ratio	1.1054
Implied Volatility Skew	--
Option Statistics
Put-Call Ratio (Volume)	0.4545
Put-Call Ratio (Open Interest)	0.6853