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Proshares S&P 500 EX-Technology ETF GJR-GARCH Volatility Analysis

Volatility prediction for Tuesday, November 10th, 2026

1 Day

19.83%

decreased by 1.04%

1 Week

19.58%

decreased by 1.29%

1 Month

18.75%

decreased by 2.12%

Analysis last updated: Monday, November 9, 2026 at 10:48 PM UTC

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Date Range:

from

11/09/2024

to

11/09/2026

6M ·

1Y ·

2Y ·

5Y ·

10Y ·

All

graph of Proshares S&P 500 EX-Technology ETF GJR-GARCH

News Impact Curve

How returns affect tomorrow's volatility

Volatility Forecast

How volatility evolves over time

Parameter Estimates

Sep 24, 2015 to Nov 6, 2026

Model Insight

This asset exhibits a strong leverage effect: volatility responds almost entirely to negative shocks. The ARCH response to positive shocks is negligible.

σ

GJR-GARCH Model

Tap to view equation

Leverage: volatility responds almost entirely to negative shocks
ParamValuet-stat
ωconst0.0366
3.90***
αARCH0.0146
0.35
βGARCH0.8476
24.64***
γleverage0.2022
3.34***

0.963

Persistence

19d

Half-life
σ

GJR-GARCH Model

Tap to view equation

ParameterValuet-statistic
ω

const

Unconditional variance weight

0.0366
3.90***
α

ARCH

Response to squared shocks

0.0146
0.35
β

GARCH

Volatility persistence

0.8476
24.64***
γ

leverage

Additional response to negative shocks

0.2022
3.34***

Persistence:

0.963

Half-life:

19 days