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V-Lab

First Trust NASDAQ Clean Edge Green Energy Index Fund GJR-GARCH Volatility Analysis

Volatility prediction for Monday, September 21st, 2026

1 Day

34.40%

decreased by 1.15%

1 Week

34.40%

decreased by 1.15%

1 Month

34.44%

decreased by 1.11%

Analysis last updated: Friday, September 18, 2026 at 10:05 PM UTC

Date Range:

from

to

6M ·

1Y ·

2Y ·

5Y ·

10Y ·

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graph of First Trust NASDAQ Clean Edge Green Energy Index Fund GJR-GARCH

News Impact Curve

How returns affect tomorrow's volatility

Volatility Forecast

How volatility evolves over time

Parameter Estimates

Feb 14, 2007 to Sep 18, 2026

Model Insight

With persistence 0.991, volatility shocks have a half-life of 81 trading days (~0.3 years), close to a unit root, so long-run forecasts are highly sensitive to this estimate.

Leverage: Negative returns increase volatility 119% more than positive returns

σ

GJR-GARCH Model

Tap to view equation

High persistence: persistence 0.991, shock half-life ~81 daysLeverage: Negative returns increase volatility 119% more than positive returns
ParamValuet-stat
ωconst0.0412
3.81***
αARCH0.0438
3.14***
βGARCH0.9215
99.93***
γleverage0.0523
1.96**

0.991

Persistence

81d

Half-life
σ

GJR-GARCH Model

Tap to view equation

ParameterValuet-statistic
ω

const

Unconditional variance weight

0.0412
3.81***
α

ARCH

Response to squared shocks

0.0438
3.14***
β

GARCH

Volatility persistence

0.9215
99.93***
γ

leverage

Additional response to negative shocks

0.0523
1.96**

Persistence:

0.991

Half-life:

81 days