Historical Volatility (Close-to-Close) (30-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 30-Day Historical Volatility (Close-to-Close) of 0.1804 for 2023-03-30.