iShares Global Clean Energy Index ETF GJR-GARCH Volatility Analysis
Volatility prediction for Wednesday, July 15th, 2026
1 Day
35.17%
decreased by 0.44%
1 Week
34.75%
decreased by 0.86%
1 Month
33.42%
decreased by 2.19%
Analysis last updated: Wednesday, July 15, 2026 at 09:11 AM UTC
News Impact Curve
How returns affect tomorrow's volatilityVolatility Forecast
How volatility evolves over timeParameter Estimates
May 3, 2022 to Jul 10, 2026Model Insight
Volatility shocks decay with a half-life of 18 trading days, meaning a shock loses half its impact after approximately 18 days.
σ
GJR-GARCH Model
Tap to view equation
| Parameter | Value | t-statistic |
|---|---|---|
ω const Unconditional variance weight | 0.1287 | 8.59*** |
α ARCH Response to squared shocks | 0.0032 | 0.46 |
β GARCH Volatility persistence | 0.9476 | 175.97*** |
γ leverage Additional response to negative shocks | 0.0215 | 1.83* |
Persistence:
0.962
Half-life:
18 days
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