Historical Volatility (Close-to-Close) (90-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.
Aspen Aerogels, Inc. (ASPN) had 90-Day Historical Volatility (Close-to-Close) of 0.9644 for 2026-08-20.
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