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V-Lab

ProShares Ultra VIX Short-Term Futures ETF GARCH Volatility Analysis

Volatility prediction for Monday, September 21st, 2026

1 Day

80.22%

decreased by 4.93%

1 Week

87.30%

increased by 2.15%

1 Month

101.42%

increased by 16.27%

Analysis last updated: Friday, September 18, 2026 at 09:57 PM UTC

Date Range:

from

to

6M ·

1Y ·

2Y ·

5Y ·

10Y ·

All

graph of ProShares Ultra VIX Short-Term Futures ETF GARCH

News Impact Curve

How returns affect tomorrow's volatility

Volatility Forecast

How volatility evolves over time

Parameter Estimates

Nov 1, 2011 to Sep 18, 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.

σ

GARCH Model

Tap to view equation

Shock decay: Shocks decay with a 7-day half-life
ParamValuet-stat
ωconst5.0000
4.92***
αARCH0.1936
6.60***
βGARCH0.7119
23.11***

0.905

Persistence

7d

Half-life
σ

GARCH Model

Tap to view equation

ParameterValuet-statistic
ω

const

Unconditional variance weight

5.0000
4.92***
α

ARCH

Response to squared shocks

0.1936
6.60***
β

GARCH

Volatility persistence

0.7119
23.11***

Persistence:

0.905

Half-life:

7 days