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V-Lab

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

Date Range:

from

to

6M ·

1Y ·

2Y ·

5Y ·

10Y ·

All

graph of ProShares Ultra VIX Short-Term Futures ETF MEM

News Impact Curve

How returns affect tomorrow's volatility

Volatility Forecast

How volatility evolves over time

Parameter Estimates

Nov 8, 2011 to Jul 17, 2026
Boundary 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

ParameterValuet-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