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.

United Therapeutics Corporation (UTHR) had 20-Day Put-Call Ratio (Open Interest) of 1.3763 for 2026-01-16.

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Figures for 2026-01-16

Volatility Metrics
Historical Volatility (Close-to-Close)	0.2267
Historical Volatility (Parkinson)	0.2590
Implied Volatility (Calls)	0.3233
Implied Volatility (Puts)	0.3258
Implied Volatility (Mean)	0.3246
Put-Call Implied Volatility Ratio	1.0076
Implied Volatility Skew	0.0459
Option Statistics
Put-Call Ratio (Volume)	0.2396
Put-Call Ratio (Open Interest)	1.3763