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.
iShares iBonds Dec 2028 Term Corporate ETF (IBDT) had 150-Day Historical Volatility (Parkinson) of 0.0245 for 2026-01-20.
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