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.

CollPlant Biotechnologies Ltd. Sponsored ADR (CLGN) had 30-Day Put-Call Ratio (Open Interest) of 0.2038 for 2025-05-30.

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Figures for 2025-05-30

Volatility Metrics
Historical Volatility (Close-to-Close)	2.6849
Historical Volatility (Parkinson)	1.7707
Implied Volatility (Calls)	2.5749
Implied Volatility (Puts)	3.1259
Implied Volatility (Mean)	2.8504
Put-Call Implied Volatility Ratio	1.2140
Implied Volatility Skew	0.5304
Option Statistics
Put-Call Ratio (Volume)	1.6607
Put-Call Ratio (Open Interest)	0.2038