Put-Call Ratio (Open Interest) (180-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.

ATI Inc. (ATI) had 180-Day Put-Call Ratio (Open Interest) of 0.1627 for 2026-04-21.

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Figures for 2026-04-21

Volatility Metrics
Historical Volatility (Close-to-Close)	0.3916
Historical Volatility (Parkinson)	0.3587
Implied Volatility (Calls)	0.4938
Implied Volatility (Puts)	0.4847
Implied Volatility (Mean)	0.4893
Put-Call Implied Volatility Ratio	0.9814
Implied Volatility Skew	0.0313
Option Statistics
Put-Call Ratio (Volume)	0.2357
Put-Call Ratio (Open Interest)	0.1627