Historical Volatility (Close-to-Close) (20-Day)
Historical Volatility (Close-to-Close): The past volatility of the security over the selected time frame, calculated using the closing price on each trading day.
State Street SPDR Portfolio High Yield Bond ETF (SPHY) had 20-Day Historical Volatility (Close-to-Close) of 0.0108 for 2026-01-16.
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