Historical Volatility (Parkinson) (10-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.
Tradr 2X Long CIEN Daily ETF (CIEX) had 10-Day Historical Volatility (Parkinson) of 0.9614 for 2026-08-17.
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