Put-Call Ratio (Volume) (30-Day)

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

Aspen Aerogels, Inc. (ASPN) had 30-Day Put-Call Ratio (Volume) of 0.0000 for 2025-05-30.

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Figures for 2025-05-30

Volatility Metrics
Historical Volatility (Close-to-Close)	1.3801
Historical Volatility (Parkinson)	0.7899
Implied Volatility (Calls)	1.1166
Implied Volatility (Puts)	0.9122
Implied Volatility (Mean)	1.0144
Put-Call Implied Volatility Ratio	0.8170
Implied Volatility Skew	0.5217
Option Statistics
Put-Call Ratio (Volume)	0.0000
Put-Call Ratio (Open Interest)	0.0760