Historical Volatility (Close-to-Close) (20-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 SmallCap600 (SDD) 20-Day Historical Volatility (Close-to-Close) data is not available for 2026-10-16.
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- Over 300 data fields encompassing historical volatility, implied volatility, and put-call ratios for multiple time frames
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- Up to 20 years of data history
- 52-Week Rank and Percentile for all metrics and time frames