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.
Vanguard ESG International Stock ETF Shares (VSGX) had 20-Day Historical Volatility (Parkinson) of 0.1646 for 2026-03-09.
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