iShares Global Clean Energy Index ETF GARCH Volatility Analysis
Volatility prediction for Tuesday, July 21st, 2026
1 Day
32.77%
decreased by 0.37%
1 Week
32.53%
decreased by 0.61%
1 Month
31.75%
decreased by 1.39%
Analysis last updated: Tuesday, July 21, 2026 at 12:25 PM UTC
News Impact Curve
How returns affect tomorrow's volatilityVolatility Forecast
How volatility evolves over timeParameter Estimates
May 3, 2022 to Jul 17, 2026Model Insight
Volatility shocks decay with a half-life of 20 trading days, meaning a shock loses half its impact after approximately 20 days.
σ
GARCH Model
Tap to view equation
| Parameter | Value | t-statistic |
|---|---|---|
ω const Unconditional variance weight | 0.1120 | 12.25*** |
α ARCH Response to squared shocks | 0.0155 | 4.48*** |
β GARCH Volatility persistence | 0.9507 | 229.25*** |
Persistence:
0.966
Half-life:
20 days
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