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.

Proto Labs, Inc. (PRLB) 20-Day Put-Call Ratio (Volume) data is not available for 2026-09-02.

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Figures for 2026-09-02

Volatility Metrics
Historical Volatility (Close-to-Close)	0.3985
Historical Volatility (Parkinson)	0.3294
Implied Volatility (Calls)	0.3913
Implied Volatility (Puts)	0.3710
Implied Volatility (Mean)	0.3811
Put-Call Implied Volatility Ratio	0.9483
Implied Volatility Skew	--
Option Statistics
Put-Call Ratio (Volume)	--
Put-Call Ratio (Open Interest)	0.4275