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.

ARK 21Shares Bitcoin ETF (ARKB) had 90-Day Put-Call Ratio (Open Interest) of 0.1887 for 2026-01-16.

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Figures for 2026-01-16

Volatility Metrics
Historical Volatility (Close-to-Close)	0.4550
Historical Volatility (Parkinson)	0.3178
Implied Volatility (Calls)	0.4294
Implied Volatility (Puts)	0.4103
Implied Volatility (Mean)	0.4198
Put-Call Implied Volatility Ratio	0.9556
Implied Volatility Skew	-0.0053
Option Statistics
Put-Call Ratio (Volume)	0.1914
Put-Call Ratio (Open Interest)	0.1887