Put-Call Implied Volatility Ratio (90-Day)
Put-Call Implied Volatility Ratio: The ratio of implied volatilities of the at-the-money puts to the at-the-money calls.
Invesco National AMT-Free Municipal Bond ETF (PZA) had 90-Day Put-Call Implied Volatility Ratio of 1.3819 for 2026-10-16.
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