Historical Volatility (Parkinson) (10-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 10-Day Historical Volatility (Parkinson) of 0.1383 for 2026-03-06.
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