Put-Call Ratio (Volume) (20-Day)

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

Roundhill Space & Technology ETF (MARS) had 20-Day Put-Call Ratio (Volume) of 0.0000 for 2026-07-28.

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Figures for 2026-07-28

Volatility Metrics
Historical Volatility (Close-to-Close)	0.3986
Historical Volatility (Parkinson)	0.3891
Implied Volatility (Calls)	0.6562
Implied Volatility (Puts)	0.7676
Implied Volatility (Mean)	0.7119
Put-Call Implied Volatility Ratio	1.1697
Implied Volatility Skew	0.1198
Option Statistics
Put-Call Ratio (Volume)	0.0000
Put-Call Ratio (Open Interest)	0.6000