Historical Volatility (Parkinson) (30-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.
Vanguard Extended Duration Treasury Index Fund ETF Shares (EDV) had 30-Day Historical Volatility (Parkinson) of 0.0927 for 2026-03-09.
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