Historical Volatility (Parkinson) (20-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 Large Cap Deep Quarterly Laddered ETF (IVVB) had 20-Day Historical Volatility (Parkinson) of 0.0456 for 2026-01-16.
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