V-Lab
Ishares Core Equity ETF PTF EGARCH Volatility Analysis
Volatility prediction for Wednesday, August 5th, 2026
1 Day
12.16%
decreased by 1.84%
1 Week
12.31%
decreased by 1.69%
1 Month
12.83%
decreased by 1.17%
Analysis last updated: Wednesday, August 5, 2026 at 09:20 AM UTC
News Impact Curve
How returns affect tomorrow's volatilityVolatility Forecast
How volatility evolves over timeParameter Estimates
Aug 13, 2019 to Jul 31, 2026Model Insight
The leverage effect is captured by the negative gamma (gamma = -0.1534), confirming that negative shocks increase volatility more than positive shocks of equal magnitude.
σ
EGARCH Model
Tap to view equation
| Parameter | Value | t-statistic |
|---|---|---|
ω const Unconditional variance weight | -0.0053 | -0.60 |
α ARCH Response to squared shocks | 0.0800 | 4.83*** |
β GARCH Volatility persistence | 0.9654 | 187.17*** |
γ leverage Additional response to negative shocks | -0.1534 | -17.18*** |
Persistence:
0.965
Half-life:
20 days
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