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.

Boston Scientific Corporation (BSX) had 20-Day Put-Call Ratio (Open Interest) of 3.9188 for 2026-01-13.

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Figures for 2026-01-13

Volatility Metrics
Historical Volatility (Close-to-Close)	0.1868
Historical Volatility (Parkinson)	0.1882
Implied Volatility (Calls)	0.2656
Implied Volatility (Puts)	0.2674
Implied Volatility (Mean)	0.2665
Put-Call Implied Volatility Ratio	1.0068
Implied Volatility Skew	--
Option Statistics
Put-Call Ratio (Volume)	0.7044
Put-Call Ratio (Open Interest)	3.9188