Put-Call Ratio (Volume) (30-Day)

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

Nasdaq, Inc. (NDAQ) had 30-Day Put-Call Ratio (Volume) of 0.1579 for 2026-05-21.

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Figures for 2026-05-21

Volatility Metrics
Historical Volatility (Close-to-Close)	0.1971
Historical Volatility (Parkinson)	0.2494
Implied Volatility (Calls)	0.2609
Implied Volatility (Puts)	0.2631
Implied Volatility (Mean)	0.2620
Put-Call Implied Volatility Ratio	1.0084
Implied Volatility Skew	0.0109
Option Statistics
Put-Call Ratio (Volume)	0.1579
Put-Call Ratio (Open Interest)	0.3993