Historical Volatility (Parkinson) (180-Day)
Historical Volatility (Parkinson): The past volatility of the security over the selected time frame, calculated using the high and low prices on each trading day.
State Street SPDR Nuveen ICE Municipal Bond ETF (TFI) had 180-Day Historical Volatility (Parkinson) of 0.0211 for 2026-01-20.
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