Historical Volatility (Parkinson) (30-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.
Fidelity Systematic Municipal Bond Index ETF (FMUN) had 30-Day Historical Volatility (Parkinson) of 0.0434 for 2025-05-29.
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