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V-Lab

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

Date Range:

from

to

6M ·

1Y ·

2Y ·

All

graph of iShares Global Clean Energy Index ETF APMEM

News Impact Curve

How returns affect tomorrow's volatility

Volatility Forecast

How volatility evolves over time

Parameter Estimates

May 3, 2022 to Jul 10, 2026

Model 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

ParameterValuet-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