Put-Call Ratio (Volume) (180-Day)

Put-Call Ratio (Volume): The ratio of puts traded to calls traded, for options with the relevant expiration date.

ARK Space & Defense Innovation ETF (ARKX) had 180-Day Put-Call Ratio (Volume) of 1.3440 for 2026-07-20.

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Figures for 2026-07-20

Volatility Metrics
Historical Volatility (Close-to-Close)	0.3686
Historical Volatility (Parkinson)	0.2796
Implied Volatility (Calls)	0.4046
Implied Volatility (Puts)	0.4106
Implied Volatility (Mean)	0.4076
Put-Call Implied Volatility Ratio	1.0148
Implied Volatility Skew	0.0159
Option Statistics
Put-Call Ratio (Volume)	1.3440
Put-Call Ratio (Open Interest)	0.3096