Historical Volatility (Parkinson) (90-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 Gold Shares Covered Call ETN (GLDI) had 90-Day Historical Volatility (Parkinson) of 0.0988 for 2026-01-16.
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