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.

Vanguard Mortgage-Backed Securities Index Fund ETF Shares (VMBS) had 30-Day Put-Call Ratio (Open Interest) of 3.1429 for 2026-04-20.

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Volatility Metrics
Historical Volatility (Close-to-Close)	0.0549
Historical Volatility (Parkinson)	0.0375
Implied Volatility (Calls)	0.1344
Implied Volatility (Puts)	0.1484
Implied Volatility (Mean)	0.1414
Put-Call Implied Volatility Ratio	1.1042
Implied Volatility Skew	0.1527
Option Statistics
Put-Call Ratio (Volume)	--
Put-Call Ratio (Open Interest)	3.1429