Put-Call Ratio (Volume) (20-Day)

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

State Street SPDR S&P MIDCAP 400 ETF Trust (MDY) had 20-Day Put-Call Ratio (Volume) of 7.2222 for 2026-10-16.

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Figures for 2026-10-16

Volatility Metrics
Historical Volatility (Close-to-Close)	0.1332
Historical Volatility (Parkinson)	0.1161
Implied Volatility (Calls)	0.1619
Implied Volatility (Puts)	0.1749
Implied Volatility (Mean)	0.1684
Put-Call Implied Volatility Ratio	1.0802
Implied Volatility Skew	0.0407
Option Statistics
Put-Call Ratio (Volume)	7.2222
Put-Call Ratio (Open Interest)	1.3804