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 Portfolio Mortgage Backed Bond ETF (SPMB) 20-Day Put-Call Ratio (Volume) data is not available for 2026-07-17.

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Figures for 2026-07-17

Volatility Metrics
Historical Volatility (Close-to-Close)	0.0414
Historical Volatility (Parkinson)	0.0279
Implied Volatility (Calls)	0.2537
Implied Volatility (Puts)	0.2453
Implied Volatility (Mean)	0.2495
Put-Call Implied Volatility Ratio	0.9671
Implied Volatility Skew	0.0548
Option Statistics
Put-Call Ratio (Volume)	--
Put-Call Ratio (Open Interest)	--