Historical Volatility (Close-to-Close) (180-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.
Harvard Apparatus Regenerative Technology, Inc. (HRGN) had 180-Day Historical Volatility (Close-to-Close) of 1.1476 for 2017-10-05.
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