Historical Volatility (Parkinson) (20-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.
ETRACS IFED Invest with the Fed TR Index ETN (IFED) had 20-Day Historical Volatility (Parkinson) of 0.2111 for 2025-12-11.
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