Historical Volatility (Parkinson) (20-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 Convexity ETF (SPYC) had 20-Day Historical Volatility (Parkinson) of 0.0936 for 2026-01-20.
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