iShares Global Clean Energy Index ETF Asy. Power MEM Volatility Analysis
Volatility prediction for Wednesday, July 15th, 2026
1 Day
37.19%
decreased by 2.26%
1 Week
37.29%
decreased by 2.16%
1 Month
37.52%
decreased by 1.93%
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 9 trading days, meaning a shock loses half its impact after approximately 9 days. The volatility power δ = 1.03 sits below 2, so large shocks influence volatility less than quadratically, a more outlier-robust response than standard GARCH.
μ
APMEM Model
Tap to view equation
| Parameter | Value | t-statistic |
|---|---|---|
ω const Unconditional variance weight | 0.1736 | 6.66*** |
α ARCH Response to squared shocks | 0.0808 | 9.14*** |
β GARCH Volatility persistence | 0.8646 | 56.15*** |
γ leverage Additional response to negative shocks | 0.0405 | 0.61 |
δ power Transformation power | 1.0304 | 5.92*** |
Persistence:
0.929
Half-life:
9 days
Other iShares Global Clean Energy Index ETF Analyses
Other Asy. Power MEM Analyses on ETFs