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.
Vanguard Information Technology Index Fund ETF Shares (VGT) had 150-Day Historical Volatility (Parkinson) of 0.1878 for 2026-05-21.
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