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.

Vanguard Mortgage-Backed Securities Index Fund ETF Shares (VMBS) 20-Day Put-Call Ratio (Open Interest) data is not available for 2026-09-03.

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Volatility Metrics
Historical Volatility (Close-to-Close)	0.0463
Historical Volatility (Parkinson)	0.0301
Implied Volatility (Calls)	--
Implied Volatility (Puts)	0.0438
Implied Volatility (Mean)	--
Put-Call Implied Volatility Ratio	--
Implied Volatility Skew	0.0211
Option Statistics
Put-Call Ratio (Volume)	--
Put-Call Ratio (Open Interest)	--