Put-Call Ratio (Open Interest) (10-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.

Federal Signal Corporation (FSS) had 10-Day Put-Call Ratio (Open Interest) of 0.2834 for 2026-01-16.

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Figures for 2026-01-16

Volatility Metrics
Historical Volatility (Close-to-Close)	0.1898
Historical Volatility (Parkinson)	0.2329
Implied Volatility (Calls)	0.2445
Implied Volatility (Puts)	0.2463
Implied Volatility (Mean)	0.2454
Put-Call Implied Volatility Ratio	1.0073
Implied Volatility Skew	--
Option Statistics
Put-Call Ratio (Volume)	0.1000
Put-Call Ratio (Open Interest)	0.2834