Put-Call Ratio (Open Interest) (30-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 30-Day Put-Call Ratio (Open Interest) of 0.6789 for 2026-01-20.

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Figures for 2026-01-20

Volatility Metrics
Historical Volatility (Close-to-Close)	0.2342
Historical Volatility (Parkinson)	0.1978
Implied Volatility (Calls)	0.3698
Implied Volatility (Puts)	0.3346
Implied Volatility (Mean)	0.3522
Put-Call Implied Volatility Ratio	0.9047
Implied Volatility Skew	0.0731
Option Statistics
Put-Call Ratio (Volume)	3.3333
Put-Call Ratio (Open Interest)	0.6789