Put-Call Ratio (Volume) (30-Day)

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

Invesco National AMT-Free Municipal Bond ETF (PZA) had 30-Day Put-Call Ratio (Volume) of 0.0000 for 2026-07-20.

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Figures for 2026-07-20

Volatility Metrics
Historical Volatility (Close-to-Close)	0.0331
Historical Volatility (Parkinson)	0.0263
Implied Volatility (Calls)	0.0466
Implied Volatility (Puts)	0.0508
Implied Volatility (Mean)	0.0487
Put-Call Implied Volatility Ratio	1.0895
Implied Volatility Skew	--
Option Statistics
Put-Call Ratio (Volume)	0.0000
Put-Call Ratio (Open Interest)	0.0000