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.
iShares Nasdaq Top 30 Stocks ETF (QTOP) had 20-Day Historical Volatility (Parkinson) of 0.1240 for 2026-01-20.
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