Put-Call Ratio (Open Interest) (120-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.

908 Devices Inc. (MASS) had 120-Day Put-Call Ratio (Open Interest) of 0.0306 for 2026-09-04.

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Figures for 2026-09-04

Volatility Metrics
Historical Volatility (Close-to-Close)	0.5891
Historical Volatility (Parkinson)	0.5810
Implied Volatility (Calls)	0.9683
Implied Volatility (Puts)	0.9459
Implied Volatility (Mean)	0.9571
Put-Call Implied Volatility Ratio	0.9768
Implied Volatility Skew	--
Option Statistics
Put-Call Ratio (Volume)	--
Put-Call Ratio (Open Interest)	0.0306