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.

Ciena Corporation (CIEN) had 10-Day Put-Call Ratio (Volume) of 0.8682 for 2026-05-21.

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Figures for 2026-05-21

Volatility Metrics
Historical Volatility (Close-to-Close)	0.6766
Historical Volatility (Parkinson)	0.6112
Implied Volatility (Calls)	0.9252
Implied Volatility (Puts)	0.9323
Implied Volatility (Mean)	0.9287
Put-Call Implied Volatility Ratio	1.0077
Implied Volatility Skew	0.0680
Option Statistics
Put-Call Ratio (Volume)	0.8682
Put-Call Ratio (Open Interest)	1.2956