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.

Natera, Inc. (NTRA) had 20-Day Put-Call Ratio (Open Interest) of 1.3506 for 2025-07-16.

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Figures for 2025-07-16

Volatility Metrics
Historical Volatility (Close-to-Close)	0.3485
Historical Volatility (Parkinson)	0.3107
Implied Volatility (Calls)	0.5058
Implied Volatility (Puts)	0.5206
Implied Volatility (Mean)	0.5132
Put-Call Implied Volatility Ratio	1.0293
Implied Volatility Skew	--
Option Statistics
Put-Call Ratio (Volume)	0.4004
Put-Call Ratio (Open Interest)	1.3506