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.
State Street SPDR Portfolio Long Term Corporate Bond ETF (SPLB) had 180-Day Historical Volatility (Parkinson) of 0.0495 for 2026-01-20.
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