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.
Fidelity MSCI Communication Services Index ETF (FCOM) had 180-Day Historical Volatility (Parkinson) of 0.2061 for 2025-06-20.
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