Historical Volatility (Parkinson) (30-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.
Simplify US Equity PLUS Downside Convexity ETF (SPD) had 30-Day Historical Volatility (Parkinson) of 0.1164 for 2025-05-30.
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