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.
Vanguard Extended Market Index Fund ETF Shares (VXF) had 180-Day Historical Volatility (Parkinson) of 0.1568 for 2026-03-09.
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