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.

Glaukos Corporation (GKOS) had 180-Day Put-Call Ratio (Open Interest) of 0.6928 for 2026-04-20.

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Figures for 2026-04-20

Volatility Metrics
Historical Volatility (Close-to-Close)	0.4763
Historical Volatility (Parkinson)	0.4543
Implied Volatility (Calls)	0.5181
Implied Volatility (Puts)	0.5300
Implied Volatility (Mean)	0.5240
Put-Call Implied Volatility Ratio	1.0231
Implied Volatility Skew	0.0166
Option Statistics
Put-Call Ratio (Volume)	0.0000
Put-Call Ratio (Open Interest)	0.6928