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.
FT Vest Buffered Allocation Defensive ETF (BUFT) had 180-Day Historical Volatility (Parkinson) of 0.0216 for 2026-01-20.
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