Put-Call Ratio (Open Interest) (180-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) had 180-Day Put-Call Ratio (Open Interest) of 11.5769 for 2026-10-16.

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Volatility Metrics
Historical Volatility (Close-to-Close)	0.0508
Historical Volatility (Parkinson)	0.0391
Implied Volatility (Calls)	0.0730
Implied Volatility (Puts)	0.0831
Implied Volatility (Mean)	0.0781
Put-Call Implied Volatility Ratio	1.1389
Implied Volatility Skew	0.0014
Option Statistics
Put-Call Ratio (Volume)	--
Put-Call Ratio (Open Interest)	11.5769