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.
State Street SPDR Russell 1000 Low Volatility Focus ETF (ONEV) had 150-Day Historical Volatility (Parkinson) of 0.0735 for 2026-01-20.
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