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.
Capital Group U.S. Small and Mid Cap ETF (CGMM) had 180-Day Historical Volatility (Parkinson) of 0.1256 for 2026-01-20.
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