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.

Archer Aviation Inc. (ACHR) had 180-Day Put-Call Ratio (Open Interest) of 0.3865 for 2026-01-07.

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Figures for 2026-01-07

Volatility Metrics
Historical Volatility (Close-to-Close)	0.7403
Historical Volatility (Parkinson)	0.6771
Implied Volatility (Calls)	0.8081
Implied Volatility (Puts)	0.7981
Implied Volatility (Mean)	0.8031
Put-Call Implied Volatility Ratio	0.9877
Implied Volatility Skew	-0.0214
Option Statistics
Put-Call Ratio (Volume)	0.1622
Put-Call Ratio (Open Interest)	0.3865