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.

MarketAxess Holdings Inc. (MKTX) had 20-Day Put-Call Ratio (Open Interest) of 0.9359 for 2026-06-04.

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Figures for 2026-06-04

Volatility Metrics
Historical Volatility (Close-to-Close)	0.3114
Historical Volatility (Parkinson)	0.2928
Implied Volatility (Calls)	0.4806
Implied Volatility (Puts)	0.4146
Implied Volatility (Mean)	0.4476
Put-Call Implied Volatility Ratio	0.8626
Implied Volatility Skew	0.0591
Option Statistics
Put-Call Ratio (Volume)	0.2000
Put-Call Ratio (Open Interest)	0.9359