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 Mega Cap Growth Index Fund ETF Shares (MGK) had 150-Day Historical Volatility (Parkinson) of 0.1468 for 2026-03-09.
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