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V-Lab

iShares Semiconductor ETF GJR-GARCH Volatility Analysis

Volatility prediction for Monday, September 14th, 2026

1 Day

37.49%

decreased by 1.02%

1 Week

37.39%

decreased by 1.12%

1 Month

37.01%

decreased by 1.50%

Analysis last updated: Friday, September 11, 2026 at 10:32 PM UTC

Date Range:

from

to

6M ·

1Y ·

2Y ·

5Y ·

10Y ·

All

graph of iShares Semiconductor ETF GJR-GARCH

News Impact Curve

How returns affect tomorrow's volatility

Volatility Forecast

How volatility evolves over time

Parameter Estimates

Jul 13, 2001 to Sep 11, 2026

Model Insight

This asset exhibits a strong leverage effect: negative returns increase next-day volatility 212% more than equivalent positive returns.

σ

GJR-GARCH Model

Tap to view equation

Leverage: Negative returns increase volatility 212% more than positive returns
ParamValuet-stat
ωconst0.0485
4.06***
αARCH0.0332
2.81***
βGARCH0.9202
103.52***
γleverage0.0704
3.23***

0.989

Persistence

60d

Half-life
σ

GJR-GARCH Model

Tap to view equation

ParameterValuet-statistic
ω

const

Unconditional variance weight

0.0485
4.06***
α

ARCH

Response to squared shocks

0.0332
2.81***
β

GARCH

Volatility persistence

0.9202
103.52***
γ

leverage

Additional response to negative shocks

0.0704
3.23***

Persistence:

0.989

Half-life:

60 days