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 Qtrly Pay 1.5x Levragd MarketVector BDC Liquid Indx ETN (BDCX) had 10-Day Historical Volatility (Parkinson) of 0.3416 for 2026-01-20.