ProShares Ultra VIX Short-Term Futures ETF MEM Volatility Analysis
Volatility prediction for Monday, July 20th, 2026
1 Day
75.53%
increased by 1.30%
1 Week
83.96%
increased by 9.73%
1 Month
100.60%
increased by 26.37%
Analysis last updated: Friday, July 17, 2026 at 09:47 PM UTC
News Impact Curve
How returns affect tomorrow's volatilityVolatility Forecast
How volatility evolves over timeParameter Estimates
Nov 8, 2011 to Jul 17, 2026Boundary Parameters
Model Insight
Volatility shocks decay with a half-life of 7 trading days, meaning a shock loses half its impact after approximately 7 days.
μ
MEM Model
Tap to view equation
| Parameter | Value | t-statistic |
|---|---|---|
ω const Unconditional variance weight | 5.0000 | 13.12*** |
α ARCH Response to squared shocks | 0.3997 | 33.11*** |
β GARCH Volatility persistence | 0.5086 | 65.62*** |
Persistence:
0.908
Half-life:
7 days
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