Put-Call Ratio (Open Interest) (90-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 90-Day Put-Call Ratio (Open Interest) of 1.1274 for 2026-01-20.

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Figures for 2026-01-20

Volatility Metrics
Historical Volatility (Close-to-Close)	0.3228
Historical Volatility (Parkinson)	0.3665
Implied Volatility (Calls)	0.4397
Implied Volatility (Puts)	0.4440
Implied Volatility (Mean)	0.4419
Put-Call Implied Volatility Ratio	1.0097
Implied Volatility Skew	0.0281
Option Statistics
Put-Call Ratio (Volume)	0.1913
Put-Call Ratio (Open Interest)	1.1274