Put-Call Ratio (Open Interest) (30-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 30-Day Put-Call Ratio (Open Interest) of 0.4030 for 2025-11-20.

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Figures for 2025-11-20

Volatility Metrics
Historical Volatility (Close-to-Close)	0.7134
Historical Volatility (Parkinson)	0.7273
Implied Volatility (Calls)	0.9138
Implied Volatility (Puts)	0.8901
Implied Volatility (Mean)	0.9020
Put-Call Implied Volatility Ratio	0.9740
Implied Volatility Skew	0.0485
Option Statistics
Put-Call Ratio (Volume)	0.5077
Put-Call Ratio (Open Interest)	0.4030