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.
ProShares UltraShort QQQ Mega (QQDN) had 60-Day Historical Volatility (Close-to-Close) of 0.4568 for 2026-05-22.
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