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.

ONESPAN INC (OSPN) had 20-Day Put-Call Ratio (Open Interest) of 0.4231 for 2026-07-21.

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Figures for 2026-07-21

Volatility Metrics
Historical Volatility (Close-to-Close)	0.3042
Historical Volatility (Parkinson)	0.3622
Implied Volatility (Calls)	0.6722
Implied Volatility (Puts)	0.6509
Implied Volatility (Mean)	0.6615
Put-Call Implied Volatility Ratio	0.9683
Implied Volatility Skew	0.0768
Option Statistics
Put-Call Ratio (Volume)	0.9231
Put-Call Ratio (Open Interest)	0.4231