Put-Call Ratio (Open Interest) (90-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 90-Day Put-Call Ratio (Open Interest) of 0.0891 for 2026-06-04.

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Figures for 2026-06-04

Volatility Metrics
Historical Volatility (Close-to-Close)	0.2617
Historical Volatility (Parkinson)	0.2785
Implied Volatility (Calls)	0.4531
Implied Volatility (Puts)	0.4099
Implied Volatility (Mean)	0.4315
Put-Call Implied Volatility Ratio	0.9045
Implied Volatility Skew	0.0290
Option Statistics
Put-Call Ratio (Volume)	0.0016
Put-Call Ratio (Open Interest)	0.0891