Put-Call Ratio (Open Interest) (20-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.

MSA Safety Incorporporated (MSA) had 20-Day Put-Call Ratio (Open Interest) of 1.0308 for 2026-09-03.

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Figures for 2026-09-03

Volatility Metrics
Historical Volatility (Close-to-Close)	0.1273
Historical Volatility (Parkinson)	0.1696
Implied Volatility (Calls)	0.2242
Implied Volatility (Puts)	0.1819
Implied Volatility (Mean)	0.2031
Put-Call Implied Volatility Ratio	0.8111
Implied Volatility Skew	--
Option Statistics
Put-Call Ratio (Volume)	--
Put-Call Ratio (Open Interest)	1.0308