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.

CareDx, Inc. (CDNA) had 20-Day Put-Call Ratio (Volume) of 0.3243 for 2026-10-19.

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Figures for 2026-10-19

Volatility Metrics
Historical Volatility (Close-to-Close)	0.5835
Historical Volatility (Parkinson)	0.6546
Implied Volatility (Calls)	0.8239
Implied Volatility (Puts)	0.8671
Implied Volatility (Mean)	0.8455
Put-Call Implied Volatility Ratio	1.0525
Implied Volatility Skew	0.0408
Option Statistics
Put-Call Ratio (Volume)	0.3243
Put-Call Ratio (Open Interest)	4.7500