Put-Call Ratio (Volume) (10-Day)

Put-Call Ratio (Volume): The ratio of puts traded to calls traded, for options with the relevant expiration date.

STAAR Surgical Company (STAA) had 10-Day Put-Call Ratio (Volume) of 0.7143 for 2026-08-28.

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Figures for 2026-08-28

Volatility Metrics
Historical Volatility (Close-to-Close)	0.3702
Historical Volatility (Parkinson)	0.3612
Implied Volatility (Calls)	0.3728
Implied Volatility (Puts)	0.3397
Implied Volatility (Mean)	0.3562
Put-Call Implied Volatility Ratio	0.9111
Implied Volatility Skew	--
Option Statistics
Put-Call Ratio (Volume)	0.7143
Put-Call Ratio (Open Interest)	0.2220