Historical Volatility (Parkinson) (150-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 MSCI Health Care Index ETF (FHLC) had 150-Day Historical Volatility (Parkinson) of 0.1108 for 2026-01-20.
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