Put-Call Ratio (Open Interest) (30-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 Innovation ETF (ARKK) had 30-Day Put-Call Ratio (Open Interest) of 2.9265 for 2026-01-16.

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Figures for 2026-01-16

Volatility Metrics
Historical Volatility (Close-to-Close)	0.2416
Historical Volatility (Parkinson)	0.1736
Implied Volatility (Calls)	0.3396
Implied Volatility (Puts)	0.3475
Implied Volatility (Mean)	0.3435
Put-Call Implied Volatility Ratio	1.0232
Implied Volatility Skew	0.0364
Option Statistics
Put-Call Ratio (Volume)	0.4524
Put-Call Ratio (Open Interest)	2.9265