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V-Lab

Proshares S&P 500 EX-Technology ETF EGARCH Volatility Analysis

Volatility prediction for Monday, August 10th, 2026

1 Day

12.53%

decreased by 0.61%

1 Week

12.87%

decreased by 0.27%

1 Month

13.89%

increased by 0.75%

Analysis last updated: Saturday, August 8, 2026 at 02:27 AM UTC

Date Range:

from

to

6M ·

1Y ·

2Y ·

5Y ·

10Y ·

All

graph of Proshares S&P 500 EX-Technology ETF EGARCH

News Impact Curve

How returns affect tomorrow's volatility

Volatility Forecast

How volatility evolves over time

Parameter Estimates

Sep 24, 2015 to Aug 7, 2026

Model Insight

The leverage effect is captured by the negative gamma (gamma = -0.1805), confirming that negative shocks increase volatility more than positive shocks of equal magnitude.

σ

EGARCH Model

Tap to view equation

ParameterValuet-statistic
ω

const

Unconditional variance weight

0.0009
0.07
α

ARCH

Response to squared shocks

0.1245
10.17***
β

GARCH

Volatility persistence

0.9426
160.68***
γ

leverage

Additional response to negative shocks

-0.1805
-19.83***

Persistence:

0.943

Half-life:

12 days