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.
GraniteShares 2x Long AAPL Daily ETF (AAPB) had 180-Day Historical Volatility (Parkinson) of 0.3727 for 2026-01-20.
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