Historical Volatility (Close-to-Close) (60-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.
Opthea Limited Unsponsored ADR (OPT) had 60-Day Historical Volatility (Close-to-Close) of 1.2717 for 2025-03-17.
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