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.

Grayscale Bitcoin Trust ETF (GBTC) had 30-Day Put-Call Ratio (Open Interest) of 0.3285 for 2025-05-27.

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Figures for 2025-05-27

Volatility Metrics
Historical Volatility (Close-to-Close)	0.3019
Historical Volatility (Parkinson)	0.2096
Implied Volatility (Calls)	0.4584
Implied Volatility (Puts)	0.4599
Implied Volatility (Mean)	0.4592
Put-Call Implied Volatility Ratio	1.0033
Implied Volatility Skew	-0.0099
Option Statistics
Put-Call Ratio (Volume)	1.7558
Put-Call Ratio (Open Interest)	0.3285