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V-Lab

ProShares UltraPro Short QQQ GJR-GARCH Volatility Analysis

Volatility prediction for Monday, July 27th, 2026

1 Day

75.79%

increased by 0.04%

1 Week

75.72%

decreased by 0.03%

1 Month

75.47%

decreased by 0.28%

Analysis last updated: Friday, July 24, 2026 at 09:46 PM UTC

Date Range:

from

to

6M ·

1Y ·

2Y ·

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10Y ·

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graph of ProShares UltraPro Short QQQ GJR-GARCH

News Impact Curve

How returns affect tomorrow's volatility

Volatility Forecast

How volatility evolves over time

Parameter Estimates

Feb 11, 2010 to Jul 24, 2026

Model Insight

This asset shows a rare inverse leverage effect: volatility responds almost entirely to positive returns, rising far more after gains than after losses. This is the reverse of the usual leverage effect, rare among risky assets.

σ

GJR-GARCH Model

Tap to view equation

ParameterValuet-statistic
ω

const

Unconditional variance weight

0.4190
18.61***
α

ARCH

Response to squared shocks

0.2132
22.19***
β

GARCH

Volatility persistence

0.8709
246.64***
γ

leverage

Additional response to negative shocks

-0.2068
-20.00***

Persistence:

0.981

Half-life:

36 days