V-Lab
Ishares Core Equity ETF PTF GARCH Volatility Analysis
Volatility prediction for Wednesday, August 5th, 2026
1 Day
18.90%
increased by 5.01%
1 Week
18.40%
increased by 4.51%
1 Month
16.94%
increased by 3.05%
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
Volatility shocks decay with a half-life of 12 trading days, meaning a shock loses half its impact after approximately 12 days.
σ
GARCH Model
Tap to view equation
| Parameter | Value | t-statistic |
|---|---|---|
ω const Unconditional variance weight | 0.0406 | 15.44*** |
α ARCH Response to squared shocks | 0.1031 | 7.33*** |
β GARCH Volatility persistence | 0.8410 | 65.54*** |
Persistence:
0.944
Half-life:
12 days
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