Historical Volatility (Parkinson) (180-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.
Cohen & Steers Closed-End Opportunity Fund, Inc. (FOF) had 180-Day Historical Volatility (Parkinson) of 0.1590 for 2026-05-22.
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