Historical Volatility (Close-to-Close) (90-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.
SPDR S&P 500 ETF (SPY) had 90-Day Historical Volatility (Close-to-Close) of 0.1678 for 2023-03-30.